Oct 07, 2015
RAN
Transmission Resource Management Description Issue 02
Date 2008-07-30
Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd
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RAN Transmission Resource Management Description Contents
Issue 02 (2008-07-30) Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd
iii
Contents
1 TRM Change History ................................................................................................................1-1
2 TRM Introduction......................................................................................................................2-1
3 TRM Principles...........................................................................................................................3-1 3.1 ATM Transmission Resources.......................................................................................................................3-1
3.1.1 ATM Physical Layer Resources ...........................................................................................................3-1 3.1.2 AAL2 Path Resources ..........................................................................................................................3-3 3.1.3 ATM Virtual Port Shaping....................................................................................................................3-4
3.2 IP Transmission Resources............................................................................................................................3-5 3.2.1 Physical and Data Link Layer Resources.............................................................................................3-6 3.2.2 IP Path Resources.................................................................................................................................3-7 3.2.3 IP Logical Port Shaping .......................................................................................................................3-8 3.2.4 IP Performance Management .............................................................................................................3-10
3.3 Iub ATM/IP Transmission Resources ..........................................................................................................3-10 3.4 Paths on the Iur, Iu-CS, and Iu-PS Interfaces..............................................................................................3-10
3.4.1 Paths on Iur Interface .........................................................................................................................3-11 3.4.2 Paths on Iu-CS Interface ....................................................................................................................3-11 3.4.3 Paths on Iu-PS Interface.....................................................................................................................3-11
3.5 Traffic Type and Transmission Resource Mapping .....................................................................................3-11 3.5.1 ATM Mapping Table ..........................................................................................................................3-11 3.5.2 IP Mapping Table ...............................................................................................................................3-12 3.5.3 ATM/IP Mapping Table......................................................................................................................3-13
3.6 Differentiated Service .................................................................................................................................3-14 3.6.1 DiffServ Based on QoS......................................................................................................................3-15 3.6.2 DiffServ Based on HSDPA ................................................................................................................3-15 3.6.3 DiffServ Based on ATM PVC............................................................................................................3-15 3.6.4 DiffServ Based on DSCP...................................................................................................................3-15
3.7 Transport Layer Group Bandwidth Management........................................................................................3-16 3.7.1 Bandwidth Reserved for Control and Management Planes................................................................3-16 3.7.2 Transmission Resource Group ...........................................................................................................3-17
3.8 Activity Factor.............................................................................................................................................3-17 3.9 Iub Overbooking .........................................................................................................................................3-18 3.10 Admission Control ....................................................................................................................................3-18
Contents RAN
Transmission Resource Management Description
iv Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd
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3.10.1 Multi-Level Admission Control Policy............................................................................................3-18 3.10.2 Admission Control Algorithm..........................................................................................................3-19 3.10.3 Admission Procedure .......................................................................................................................3-22
3.11 Congestion Control....................................................................................................................................3-25 3.11.1 Congestion Detection Method..........................................................................................................3-25 3.11.2 Congestion Handling on the Iub Interface .......................................................................................3-25
4 TRM Parameters.........................................................................................................................4-1
5 TRM Reference Documents .....................................................................................................5-1
RAN Transmission Resource Management Description 1 TRM Change History
Issue 02 (2008-07-30) Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd
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1 TRM Change History TRM Change History provides information on the changes between different document versions.
Document and s
T nt and versions
Product Version
able 1-1 Docume product
Document Version RAN Version RNC Version NodeB Version
02 (2008-07-30) 10.0 V200R010C01B061 V200R010C01B041 V100R010C01B050
01 (2008-05-30) 10.0 V200R010C01B051 V100R010C01B049 V200R010C01B040
Draft (2008-03-20) 10.0 V200R010C01B050 V100R010C01B045
z nagement feature of a specific product version.
Editorial change: refers to changes in information that has already been included, or the n.
02 (2008-07-30This is the document for the second commercial release of RAN10.0.
C d with 01 (2008-05-30) of RAN10.0, issue 02 (2008-07-30) of RAN10.0 inc ates the changes described in the following table.
There are two types of changes, which are defined as follows:
Feature change: refers to the change in the transmission resource ma
zaddition of information that is not provided in the previous versio
)
ompareorpor
Change Change Description Parameter Change Type
Feature change
A parameter list is added. See chapter 4 "TRM Parameters".
None.
1 TRM Change History RAN
Transmission Resource Management Description
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Change Change Description Parameter Change Type
In section 3.6 "Differentiated Service", the default DSCP values for the IP paths of QOSPATH type are changed.
None.
None.
user is
d to Copper user TRMMAP index.
The parameter modified is listed as follow: BronzeTRMMAP indexmodifie
Editorial change
None. None.
01 (2008-05-30This docum mercial release of RAN10.0.
C d with draft (2008-03-20) of RAN10.0, issue 01 (2008-05-30) of RAN10incorporates the changes described in the following table.
) is the
ompare
ent for the first com
.0
Change Change Description Parameter Type Change
The DSCP values of QOSPATH have increased. For details, see .
None. DiffServ Based on DSCP in 3.6 Differentiated Service
Feature
re r. None.
change
The parameter Resource Management Mode used for a source group is changed to be non-configurable paramete
Editorial change
: z Management Parameters is
removed because of the creation of RAN10.0 parameter reference.
z The structure is optimized.
None. General documentation changeThe Transmission Resource
Draft (2008-03This is a draft for the first commercial release of RAN10.0.
Compared with issue 03 (2008-01-20) of RAN6.1, this issue incorporates the changes described in the following table.
-20)
RAN Transmission Resource Management Description 1 TRM Change History
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Change Type Change Description Parameter Change
The topic 3.2.3 IP Logical Port Shaping is added.
The following parameters are added:z Logic port No. z Resource
Management Mode
The topic 3.2.4 IP Performance Management is added.
The following parameters are added:z Auto adjust
bandwidth switchz Min bandwidth
[64kbps] z Max bandwidth
[64kbps]
Multi-level VP shaping is added to 3.1.3 ATM Virtual Port Shaping.
The following parameters are added:z Type of the
virtual port z The Virtual Port
Number z The bearing type
of the virtual portz The Upper
Virtual port Number
z Forward bandwidth [kpbs]
z Backward bandwidth [kpbs]
z Bearing VP No.
In 3.2 IP Transmission Resources, z A description of two IP interface boards is
added. z The values of the IP path type parameter are
divided into two groups: high-quality types and low-quality types.
The following parameter is changed: IP path type.
Feature change
The support of operator-dependent Iub resource management is described in 3.10 Admission Control.
The following parameters are added:z Resource
Management Mode
z CN Operator index
1 TRM Change History RAN
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Change Type Change Description Parameter Change
A new value, UBR_PLUS has been added to the Service Type parameter in 3.1 ATM Transmission Resources.
The following parameter is changed: Service Type.
In 3.5 Traffic Type and Transmission Resource Mapping: z The command for setting the mapping
relationship between the traffic types and transmission resources is changed from ADD ADJNODE to ADD ADJMAP.
z Traffic Type of interactive service in the TRMMAP tables has been changed.
None
The command for setting the factor is changed from ADD ADJNODE to ADD ADJMAP in 3.8 Activity Factor.
None
The R99 and HSPA service admission control algorithm is added in 3.10 Admission Control.
None
More detailed technical description of group bandwidth management is added in 3.7 Transport Layer Group Bandwidth Management, such as description of transmission resource group.
None
Description of multi-level admission control policy is added in 3.10 Admission Control.
None
A new parameter has been added in 3.11 Congestion Control.
The following parameter is added: NodeB name.
Editorial change General documentation change: Implementation information has been moved to a separate document.
None
RAN Transmission Resource Management Description 2 TRM Introduction
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2 TRM Introduction Transmission Resource Management (TRM) is used to manage user plane resoIub, Iur, and Iu interfaces in the Radio Network Controller (RNC). By using
urces on the TRM, it is
ss(QoS
z ub,
z d Iu-CS interfaces.
z GPRS Tunneling Protocol for User Plane (GTP-U) resources, IP over ATM (IPoA) bandwidth resources, and IP path bandwidth resources on the Iu-Packet Switched (PS)
Impact z
This feature has no impact on system performance. r Features
Network ElemT -1 th o s) in
Table 2-1 Es involv in TR
po ible to increase the transmission resource usage and to guarantee the Quality of Service ).
The following transmission resources are managed by the TRM modules:
Channel Identifier (CID) resources, and bandwidth resources for AAL2 paths on the IIur, and Iu-Circuit Switched (CS) interfaces. User Datagram Protocol (UDP) resources, and bandwidth resources for IP paths on the Iub, Iur, an
interface.
Impact on System Performance
z Impact on OtheThis feature has no impact on other features.
ents Involved able 2 describes e Netw rk Elements (NE involved TRM.
N ed M
UE NodeB RNC MSC Server MGW SGSN GGSN HLR
2 TRM Introduction RAN
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UE NodeB RNC MSC Server MGW SGSN GGSN HLR
NOTE: z : not involved z : involved UE = User Equipment, RNC = Radio Network Controller, MSC = Mobile Service Switching Center, MGW = Media Gateway, SGSN = Serving GPRS Support Node, GGSN = Gateway GPRS Support Node, HLR = Home Location Register
RAN Transmission Resource Management Description 3 TRM Principles
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3 TRM Principles The TRM principles provide information about the technical aspects of TRM, including the
urces in the different modes and the affic types. The TRM principles also
v like Differentiated Services (DiffServ), admission control a d a
e ter.
on Resources
Transmission Resource Mapping ice
Bandwidth Management
z Iub Overbooking z Admission Control
3.1 ATM Transmission Resources the physical layer resources and the AAL2 path
3.1.1 ATM P yer Resources
interface is carried on the IP over ATM (IPoA) Permanent Virtual an
llowing trans :
parameters and algorithms used, the transmission resomapping between the transmission resources and trpro ide information about functions n ctivity factors.
Th following lists the contents of this chap
z ATM Transmission Resources z IP Transmission Resources z Iub ATM/IP Transmissiz Paths on the Iur, Iu-CS, and Iu-PS Interfaces z Traffic Type andz Differentiated Servz Transport Layer Group z Activity Factor
z Congestion Control
The ATM transmission resources consist of resources. ATM Virtual Port (VP) shaping is used to solve downlink Iub congestion problems.
hysical LaIn ATM mode, the user plane data for the Iub/Iur/Iu-CS interfaces is carried on AAL2 paths, and data for the Iu-PSCh nel (PVC).
Data for the terrestrial interfaces is transmitted on the physical layer in one of the fomission modes
z E1/T1: Electrical ports of the AEUa board are used for data transmission.
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z Channelized STM-1/OC-3: Optical ports of the AOUa board are used for data transmission.
-3c: Optical ports of the UOIa board are used for data
Table 3-1 describes the ATM interface boards and their transmission mode
T
z Unchannelized STM-1/OCtransmission.
s.
able 3-1 ATM interface boards
Description Transmission Mode
Board
AEUa AEUa refers to the RNC 32-port ATM over E1/T1 interface unit (REV: a). z
onal ATMnal IMA
The AEUa supports interfaces such as Iu-CS, Iur, and Iub.
z UNI IMA
z Fractiz Fractioz Virtual Port
(VP)
AOUa AOUa refers to the RNC 2-port ATM over channeoptical STM-1/OC-3 interface unit (REV: a).
lized z IMA z Virtual Port
(VP) The AOUa supports interfaces such as Iu-CS, Iur, and Iub.
z UNI
UOIa UOIa refers to the RNC 4-port ATM/packet over unchannelized optical STM-1/OC-3c interface unit (REV: a).
NCOPT
The UOIa supports interfaces such as Iu-CS, Iu-PS, Iu-BC, Iur, and Iub.
T describes t tifier (VPI) an el Identifier (VCI) range as well as the service types for the ATM interface boards.
Table 3-2 VPI/VCI r for ATM int
able 3-2 he Virtual Path Iden d Virtual Chann
ange and service types erface boards
Board VPI /VCI Range Service Type
AEUa z VPI: 0 to 255 z 35 z
S
VCI: 32 to 655
z CBR RTVBR
z NRTVBR z UBR z U PLUBR_
AOUa z VPI: 0 to 255 z 35 z
S
VCI: 32 to 655
z CBR RTVBR
z NRTVBRz UBR z UBR_PLU
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Board VPI /VCI Range Service Type
UOIa z VPI: 0 to 255 z VCI: 32 to 65535
z CBR z RTVBR z NRTVBR z UBR z UBR_PLUS
figured with Minimum Cell Rate (MCR).
3.1.2 AAL2 Path Resources L rses describes the AAL2 path resource parameters, and the mappings
type and service type parameters.
z HSUPA_RT
acket Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) traffic can be carried on the same AAL2 path. HSDPA is carried on the downlink
T ervic 2 p Service type parameters is determined by TX traffic record index or RX traffic r index parameter.
Ta 3-3 describes the recommended mappi and Service type p ters. The service type priority in desc r is: CBR > RTVBR > NRTVBR > UBR or UBR_PLUS.
T g between AAL2 path type
UBR_PLUS is the UBR con
AA 2 Path Recoubetween AAL2 path
In ATM mode, the AAL2 path types are as follows:
z RT z NRT z HSDPA_RT z HSDPA_NRT
z HSUPA_NRT
High Speed Downlink P
and HSUPA is carried on the uplink.
he AAL2 path type is related to the Sath type and
ecord
e type parameter. The mapping between AAL
ble ng between AAL2 path typearame ending orde
able 3-3 Mappin and service type parameters
Values for the AAL2 Path Type Parameter
Values for the Service Type Parameter
RT CBR, or RTVBR
NRT NRTVBR
HSDPA_RT CBR, or RTVBR
HSDPA_NRT NRTVBR, UBR, or UBR_PLUS
HSUPA_RT CBR, or RTVBR
HSUPA_NRT NRTVBR, UBR, or UBR_PLUS
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3.1.3 ATM VirtATM
wn nd pack
To a
z ping rate is the Iub bandwidth corresponding to each NodeB. The shaping bandwidth of each VP is configured to avoid
z g rate of the hub VP is lower
z Ensure that the actual rate of the VPs does not exceed the bandwidth of the physical port.
ual Port Shaping VP shaping is applied on the port of ATM interface boards and is used to solve
do link Iub congestion problems, which decrease the risk of transmission congestion aet loss.
void congestion in the ATM network:
Configure a leaf VP aiming at each NodeB. The VP sha
congestion occurring on each NodeB and access point of the transport network. Configure a hub VP aiming at each Hub NodeB. The VP connecting to the hub VP corresponds to the actual NodeB networking. The shapinthan or equal to the Iub bandwidth of the Hub NodeB.
Otherwise, congestion may occur on the physical port.
The sum of the configured VP bandwidth can exceed the bandwidth of the upper-level VP (or of the physical port) because the VPs can be converged upon admission. For the actual traffic, however, the sum of VP traffic will not exceed the traffic of the upper-level VP.
If these conditions are met, congestion will not occur on the NodeB Iub interface.
problems. One principle of RNC back pressure algorithm is congestion detection, , see 3.10 Admission ub Overbooking.
Solution to Congestion th leaf VPs and
VP shaping also supports admission control, congestion control and back pressure algorithm. The RNC back pressure algorithm can be applied to VP shaping, which will solve Iub congestion which requires the shaping function at the transport layer. For detailsControl, 3.11 Congestion Control and Flow Control Algorithm 2 for I
Based on VP Shaping The RNC supports multi-level shaping (up to level-5 shaping), which has bohub VPs.
Figure 3-1 shows the VPs corresponding to the multi-level NodeB.
RAN Transmission Resource Management Description 3 TRM Principles
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Figure 3-1 VPs corresponding to multi-level NodeB.
NB = NodeB, BW = bandwidth, BW0 = bandwidth of the physical port
e convergence may occur in the ) or in the Hub NodeB (for
must
s of ub VP and physical port.
z
3.2 IP Transmission Resources The IP transmission resources consist of the physical, and data link layer resources as well as the IP path resources. IP Logical Port (LP) shaping is used to solve downlink Iub congestion problems and IP Performance Management (PM) is used to ensure that the total transmit rate does not exceed the current actual available bandwidth.
z Multiple NodeBs are converged at the Iub interface. Thtransport network (such as NB1 and NB4 in Figure 3-1example, NB2 and NB3 are converged at NB1, as shown in Figure 3-1). The VPs be configured to provide an appropriate convergence solution.
z The leaf VP actual rate is restricted by the leaf VP shaping rate, and scheduling ratethe h
The VP shaping parameters involved are as follows:
z Type of the virtual portz The Virtual Port Number z The bearing type of the virtual port z The Upper Virtual port Number
Forward bandwidth [kpbs] z Backward bandwidth [kpbs] z Bearing VP No.
3 TRM Principles RAN
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3.2.1 Physic Layer Resources T ns ces include the physical layer and da
I de, Iu-PS ces is carried on UDP/IP.
Data for the cal layer in one of the following transmission m
z E1/T1: Electrical ports of the PEUa board are used for datz /GE daz Optica sed for data transmission. z Uncha are used for data
transm
Ta desc
Table 3-4 IP
al and Data Link he IP tra mission resour ta link layer resources.
n IP mo the user plane data of the Iub, Iur, Iu-CS, and interfa
terrestrial interfaces is transmitted on the physiodes:
a transmission. FE : Electrical ports of the FG2a board are used for
l GE: Optical GE ports of the GOUa board are unnelized ST
ta transmission.
M-1/OC-3c: Optical ports of the UOIa board ission
ble 3-4 ribes the IP interface boards.
interface boards
Board Description Transmission Mode
PEUa PEUa refers to the RNC 32-port packet oE1/T1 interface unit (REV: a). The PEUa supports the
ver
IP-based Iub, Iur, and z MCPPP ux
C2507)
Iu-CS interfaces.
z PPP z MLPPP
z PPPMz IPHC (RF
FG2a
The FG2a supports the IP-based Iub, Iur, Iu-CS, and Iu-PS interfaces.
FG2a refers to the RNC packet over electronic 8-port FE or 2-port GE Ethernet interface unit (REV: a).
IP over Ethernet
GOUa GOUa refers to the RNC 2-port packet over IP over Ethernet optical GE Ethernet interface unit (REV: a). The GOUa supports the IP-based Iub, Iur, Iu-CS, and Iu-PS interfaces.
UOIa The board provides four unchannelized STM-1/OC-3c optical ports and supports IP
z PPP z PPPMux
over SDH/SONET.
P Ua POUa refers to the O port packet over M-1/OC-3 interface unit
z PPP z PPPMux z MLPPP
PP
groups in T1 mode
RNC 2-channelized optical ST(REV: a). The POUa provides two IP over channelized STM-1/OC-3 optical ports and supports IP over E1/T1 over SDH/SONET.
z Supporting 42 MLPgroups in E1 mode
z Supporting 64 MLPPP
RAN Transmission Resource Management Description 3 TRM Principles
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The user plane data of Iub, Iur, and Iu-CS interfaces is encapsulated through the UDP, IP, and layer 2 (L2). An independent UDP port is allocated to each data flow.
Multi-link PPP (MLPPP)
(MCPPP)
address and control or protocol fields can be applied on the
n resources when the E1 is used on the Iub interface. For details about the data link layer, refer to IP RAN Header Compression.
If L2 is carried on the Ethernet, the data can be encapsulated in the format shown in Figure
F sulat
L2 can be carried on either the E1 or the Ethernet (FE/GE). If L2 is carried on the E1, the data can be encapsulated on the basis of the following protocols:
z Point to Point Protocol (PPP) zz PPP Multiplexing (PPPMux) z Multi-Class PPP
The compression of thePPP/MLPPP/PPPMux link. In addition, the IP header compression technology can also be used to save the transmissio
3-2.
igure 3-2 Encap ion format of the Ethernet data
The 802).
3.2.2 IP Path Resources I des IP p c t
T h pe.
Tab between
data encapsulation complies with RFC894 and RFC1042 (IEEE
P Path Resources cribes the IP path type parameters, and the mappings between theype. ath type and traffi
able 3-5 describes t e mapping between IP path type and the recommended traffic ty
le 3-5 Mapping IP path type and traffic type
IP Path Type Recommended Traffic Type
HQ_RT LQ_RT
Common channel messages Signaling Radio Bearer (SRB)
tablished on DCHs
AMR voice CS conversational and streaming services PS conversational and streaming services es
HQ_NRT LQ_NRT
PS BE services established on DCHs
HQLQ
_HSDPART _HSDPART
PS conversational and streaming services established on HSDPA channels
HQ_HSDPANRT PS interactive and background services established on HSDPA channels LQ_HSDPANRT
3 TRM Principles RAN
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IP Path Type Recommended Traffic Type
HQ_HSUPART LQ_HSUPART
PS conversatichannels
onal and streaming services established on HSUPA
HQ_HSUPANRT LQ_HSUPANRT
PS interactive and background services established on HSUPA channels
HQ_QOSPATH Any service type cpriority of the QOLQ_QOSPATH
an be carried on the QOSPATH. The transmission SPATH is configurable, so different service types
can be transmitted with different priorities.
et transport. This difference is ission
nlink Iub ckets
z a bandwidth g e sha to avoid
congestion oc on each t of th port network. z Ensure that th rate of the b th of the physical port.
Otherwise, co may oc
If these conditions t, congest cur on the Nod
LP shaping also su dmissio estion control The RNC back pre gorithm to LP shapingcongestion problem ple of pressure algori tection,
hich requires the shaping function in the transmission layer. For details, see 3.10 Admission , 3.11 Congestion Control and Flow Control Algorithm 2 for Iub Overbooking.
Solution to CoTable 3-6 describes the interface board capacity of LP shaping and IP Performance Management (PM).
Table 3-6 Interface board capacity of LP shaping and IP PM
z High Quality (HQ) and Low Quality (LQ) differ in bearer type. HQ is based on IP over E1/T1 transport, whereas LQ is based on IP over Etherndue to the fact that compared with IP transport, E1/T1 transport has low transmdelay, thus featuring a high quality.
z The IP path also needs to be configured, even if the Iu-PS interface adopts IPoA for transmission.
z HSDPA and HSUPA traffic can be carried on the same IP path. HSDPA is carried on the downlink and HSUPA is carried on the uplink.
3.2.3 IP Logical Port Shaping IP LP shaping is applied on the port of IP interface boards, and is used to solve dowcongestion problems, which will decrease the risk of transmission congestion and paloss.
To avoid congestion in the IP network:
Configure ancorrespondin
LP aiming at ea to NodeB. Th
ch NodeB. The LP shaping rping bandwidth of each LP
te is the Iub is configured
curring NodeB and access poin e transe actualngestion
the LPs does not exceedcur on the physical port.
andwid
are me ion will not oc eB Iub interface.
pports a n control, cong and back pressure algorithm. ssure als. One princi
can be appliedRNC back
, which will solve Iub thm is congestion de
wControl
ngestion Based on LP Shaping
Bearing Type Board Type Capacity of LP Shaping Remarks
IP PEUa Does not support LP. None
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Bearing Type Board Type Capacity of LP Shaping Remarks
POUa Does not support LP. None
FG2a Supports LP. LP level-1 shaping + IP PM
GOUa Supports LP. LP level-1 shaping + IP PM
UOIa Supports LP. LP level-1 shaping
For details about IP PM, see 3.2.4 IP Performance Management.
Figure 3-3 shows the back pressure solution of LP level-1 shaping.
Figure 3-3 Back pressure solution of LP level-1 shaping
NB = NodeB, BW = bandwidth, BW0 = bandwidth of the physical port
aim at each NodeB. The shaping rate of the leaf LP is
qual to or less than the bandwidth of the physical port.
z The LPs (LP1, LP2, LP3, and LP4)equal to the Iub bandwidth of each NodeB.
z The bandwidth of the four LPs must be e
The configured LP can exceed the bandwidth of the physical port (with a convergence based
, but the sum of the actual traffic will not exceed the traffic of upper-level LP.
e
z z Re
on the admission algorithm)
Th LP shaping parameters involved are as follows:
Logic port No. source management mode
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3.2.4 IP PerformaIn th cintroduc back pressure.
to dynamically detect the actual available bandwidth and ensure that the total tran
The
z
ard Monitoring (FM) packet including the send packet count and time stamp to the NodeB.
et to erate a Backward Reporting (BR) packet and then sends it to RNC.
nce Management e a tual network, bandwidth-varying scenario exists. In this scenario, the IP PM is
ed on the basis of LP
IP PM is usedsmit rate does not exceed the current actual available bandwidth.
solution is the following:
If LP back pressure is implemented, congestion and packet loss do not occur at the LP. z The RNC and NodeB work together to implement IP PM in the following way:
The RNC sends a Forw
The NodeB adds the receive packet count and time stamp on the FM packgen
The RNC estimates the available bandwidth, depending on the BR packet, and adjusts the LP rate.
e dynamic adjustment of the LP Th depends on the IP PM detection result. If the Auto adjust
bandwidth switch parameter is set to ON when configuring the LP, the IP PM of all the IP paths bound on this LP must be activated. Then, the system dynamically adjusts the
information obtained by the IP
bandwidth of the LP according to the Iub transmission qualityPM.
z The estimated available bandwidth is also used for admission algorithms. For details, see3.10 Admission Control.
If these conditions are met, congestion will not occur on the NodeB Iub interface.
z If the Auto adjust bandwidth switch parameter is set to ON, you should configure the
Max bandwidth [64kbps] and the Min bandwidth [64kbps]. only configure the
ssion Resources
ATM transmission resources, see3.1 ATM Transmission about the IP transmission resources, see 3.2 IP
3.4 Paths o is similar to TRM of the Iub interface.
z If the Auto adjust bandwidth switch parameter is set to OFF, you canbandwidth of a fixed logical port.
3.3 Iub ATM/IP TransmiThe Iub ATM/IP mode consists of the ATM transport part and the IP transport part. The ATM and IP transmission resources are independent and configured separately.
For more information about the Resources, and for more information Transmission Resources.
n the Iur, Iu-CS, and Iu-PS Interfaces TRM of the Iur, Iu-CS and Iu-PS
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3.4.1 Paths on Iur Interface Services carried on the Iur interface are diversified. Therefore, the types of paths configureon the Iur interfa
d ce are the same as those on the Iub interface.
3.4.2 Paths o
Q_RT and LQ_RT as d LQ_QOSPATH types need to be configured in IP mode.
3.4.3 Paths o
M or IP mode.
3.5 Traffic Transmis cT n traffic types and ion resources gured for each a de.
W t mapping is added, d pping indexe igned to users with d . The RNC provides pping tables AP tables). The m fic types, inc fic handling p the transport bearer is co ADD TRMMA mand, and the m g of the gold, silver, or c ured through the MAP comma
3.5.1 ATM M Ta apping recommended for the ATM-based Iub/I r/Iu-CS interfaces. P erre and seconda pe is used when the adm l
T for sed Iub/Iur/Iu-CS interfaces
n Iu-CS Interface Services carried on the Iu-CS interface are AMR voice services, CS conversational services and CS streaming services, all of which are real-time services. Therefore, the AAL2 paths of RT type need to be configured in ATM mode, and the IP paths of Hwell as HQ_QOSPATH an
n Iu-PS Interface For the resource management of the Iu-PS interface, the IP paths of NRT or HQ_QOSPATHand LQ_QOSPATH types are used in AT
Type and sion Resour e Mapping he mapping betwee transmiss can be confidjacent no
hen an adjacenifferent priorities
ifferent ma default ma
s are ass(TRMM
apping between the trafnfigured through the
luding trafP com
riority, andappin
opper type is config ADD ADJ nd.
apping Tableble 3-7 shows the m u
rimary path type refers to the pref d path type ry path tyission to the primary path type fai s.
able 3-7 Mapping recommended the ATM-ba
Traffic Type Primary Pa Secondth Type ary Path Type
Common channel ATMRT NULL
SRB ATMRT NULL
AMR voice ATMRT NULL
R99 CS conversational ATMRT NULL
R99 CS streaming ATMRT NULL
R99 PS conversational ATMRT NULL
R99 PS streaming ATMRT NULL
R99 PS interactive high priority ATMNRT NULL
R99 PS interactive middle priority ATMNRT NULL
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Traffic Type Primary Path Type Secondary Path Type
R99 PS interactive low priority ATMNRT NULL
R99 PS background ATMNRT NULL
HSDPA Signal ATMHDRT NULL
HSDPA conversational ATMHDRT NULL
HSDPA streaming ATMHDRT NULL
HSDPA interactive high priority ATMHDNRT NULL
HSDPA interactive middle priority ATMHDNRT NULL
HSDPA interactive low priority ATMHDNRT NULL
HSDPA background ATMHDNRT NULL
HSUPA Signal ATMHURT NULL
HSUPA conversational ATMHURT NULL
HSUPA streaming ATMHURT NULL
HSUPA interactive high priority T ATMHUNR NULL
HSUPA interactive middle priority T ATMHUNR NULL
HSUPA interactive low priority T ATMHUNR NULL
HSUPA background ATMHUNRT NULL
3.5.2 IP MapTa apping recommended for e IP-based Iub/IP erre d seconda pe is used when the adm l
T for th /Iur/Iu-CS s
ping Table ble 3-8 shows the m th ur/Iu-CS interfaces.
rimary path type refers to the pref d path type an ry path tyission to the primary path type fai s.
able 3-8 Mapping recommended e IP-based Iub interface
Traffic Type Primary Pat Secondh Type ary Path Type
Common channel HQ_IPRT NULL
SRB HQ_IPRT NULL
AMR voice HQ_IPRT NULL
R99 CS conversational HQ_IPRT NULL
R99 CS streaming HQ_IPRT NULL
R99 PS conversational HQ_IPRT NULL
R99 PS streaming HQ_IPRT NULL
R99 PS interactive high priority HQ_IPNRT NULL
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Traffic Type Primary Path Type Secondary Path Type
R99 PS interactive middle priority HQ_IPNRT NULL
R99 PS interactive low priority HQ_IPNRT NULL
R99 PS background HQ_IPNRT NULL
HSDPA Signal HQ_IPHDRT NULL
HSDPA conversational HQ_IPHDRT NULL
HSDPA streaming HQ_IPHDNRT NULL
HSDPA interactive high priority HQ_IPHDNRT NULL
HSDPA interactive middle priority HQ_IPHDNRT NULL
HSDPA interactive low priority HQ_IPHDNRT NULL
HSDPA background HQ_IPHDNRT NULL
HSUPA Signal HQ_IPHURT NULL
HSUPA conversational HQ_IPHURT NULL
HSUPA streaming HQ_IPHURT NULL
HSUPA interactive high priority NRT HQ_IPHU NULL
HSUPA interactive middle priority NRT HQ_IPHU NULL
HSUPA interactive low priority NRT HQ_IPHU NULL
HSUPA background HQ_IPHUNRT NULL
3.5.3 ATM/IP le Table 3-9 shows the mapping recommended for the ATM/IP-based Iub interface. Primary path t a path type i admission to the prim
T for th sed Iub inte
Mapping Tab
ype refers to the preferred path type nd secondary s used when theary path type fails.
able 3-9 Mapping recommended e ATM/IP-ba rface
Traffic Type Primary Pa Secondary Pth Type ath Type
Common channel ATMRT HQ_IPRT
SRB ATMRT HQ_IPRT
AMR voice ATMRT HQ_IPRT
R99 CS conversational ATMRT HQ_IPRT
R99 CS streaming ATMRT HQ_IPRT
R99 PS conversational ATMRT HQ_IPRT
R99 PS streaming ATMRT HQ_IPRT
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Traffic Type Primary Path Type Secondary Path Type
R99 PS interactive high priority ATMNRT HQ_IPNRT
R99 PS interactive middle priority ATMNRT HQ_IPNRT
R99 PS interactive low priority ATMNRT HQ_IPNRT
R99 PS background ATMNRT HQ_IPNRT
HSDPA Signal ATMHDRT HQ_IPHDRT
HSDPA conversational ATMHDRT HQ_IPHDRT
HSDPA streaming ATMHDRT HQ_IPHDRT
HSDPA interactive high priority HQ_IPHDNRT ATMHDNRT
HSDPA interactive middle priority HQ_IPHDNRT ATMHDNRT
HSDPA interactive low priority HQ_IPHDNRT ATMHDNRT
HSDPA background HQ_IPHDNRT ATMHDNRT
HSUPA Signal ATMHURT HQ_IPHURT
HSUPA conversational ATMHURT HQ_IPHURT
HSUPA streaming ATMHURT HQ_IPHURT
HSUP HQ_IPHUNRT ATMHUNRT A interactive high priority
HSUPA interactive middle priority HQ_IPHUNRT ATMHUNRT
HSUPA interactive low priority HQ_IPHUNRT ATMHUNRT
HSUPA background HQ_IPHUNRT ATMHUNRT
The default TRMMAP tables can be modified with the SET DEFAULTTRMMAP command.
The
z z z z
3.6 Differentiated Service ) is a method of providing different services with
different transmission priorities.
A new mapping table index is added with the ADD TRMMAP command, and the mappingtable index is modified with the MOD TRMMAP command.
parameters that are used to modify the mapping are as follows:
TRMMAP ID Gold user TRMMAP index Silver user TRMMAP index
Copper user TRMMAP index
The Differentiated Service (DiffServ
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3.6.1 DiffSe
z
ements for transmission error rate and reduce the overhead processing. FTP is less sensitive to delay and jitter but does not
ansmission errors.
3.6.2 DiffSee flow control of the channels that carry HSDPA services is
managed by the NodeB.
vices. That is, independent AAL2 paths or IP paths must be configured to carry the services of HSDPA_RT type or HSDPA_NRT type as follows:
BE services established on HSDPA channels are carried on the paths of HSDPA_NRT
3.6.3 DiffSees of
th PVC such as NRTVBR.
3.6.4 DiffSeIP Code Point (DSCP) is applied to implement the ffS et that enables different services to be transmitted with fe he same network environment, the greater the DSCP
value has.
default DSCP values for IP paths of non-QOSPATH type, run the ADD IPP
The DSCP for the IP path of QOSPATH type is classified into EF,AF11,AF12,AF13,AF21,AF22,AF23,AF31,AF32,AF33,AF41,AF42,AF43,BE. The transmission priorities from high to low are EF > AF43 > AF42 > AF41 > AF33 > AF32 >
rv Based on QoS DiffServ is implemented according to different QoS requirements of the different services.
The voice service requires short delay and small jitter but allows a certain rate of transmission errors. To minimize the delay and jitter, the high-quality transmission medium with the shortest path is allocated to the voice service. The Transparent Mode (TM) is applied to meet the requir
z The PS BE service such as e-mail orallow transmission errors. Relatively low-quality transmission medium is allocated to the PS BE service, and the retransmission mechanism of the Acknowledged Mode (AM) ensures no tr
rv Based on HSDPA If the NodeB supports HSDPA, th
Without the differentiated transmission measures, the outburst of HSDPA data transmission can affect both the voice services and the R99 data services. Therefore, differentiated transmission must be applied to HSDPA ser
z PS streaming services established on HSDPA channels are carried on the paths of HSDPA_RT type.
z PStype.
rv Based on ATM PVC In ATM mode, the ATM PVC priority is applied to implement the DiffServ. Different typservice can be carried on different PVCs with different transmission priorities.
For example, the RT path type uses high-priority PVC such as CBR or RTVBR, and NRT patype uses low-priority
rv Based on DSCP In mode, the Differentiated Service Di erv. DSCP is a field in an IP packdif rent priorities on the network. In t
higher priority the traffic is, the
Different IP paths can be configured with different DSCPs, which means that different services can be transmitted by using different DSCPs. For example, the RT path type is configured with high-priority DSCP, and the NRT path type is configured with low-priority DSCP.
To modify theATH command or MOD IPPATH command.
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AF31 > AF23 > AF22 > AF21 > AF13 > AF12 > AF11 > BE. The default DSCP vathem are as follows:
lues for
: 34
the
s and IP port queues is set through the SET QUEUEMAP command.
z EF: 46 z AF43: 38 / AF42: 36 / AF41z AF33: 30 / AF32: 28 / AF31: 26 z AF23:22 / AF22: 20 / AF21: 18 z AF13: 14 / AF12: 12 / AF11: 10 z BE: 0
The DSCP for the IP path of QOSPATH type is determined by the traffic mapping, andDSCP for the IP path of non-QOSPATH type is configured on the IP path. The mapping between the DSCP value
If the data is transmitted on the leased lines, the IP address and DSCP values of the IP paths should be configured according to the Service Level Agreement (SLA).
3.7 Transport Layer Group Bandwidth Management Tr sport Layer Group Bandwidth Management is used to manage different types of paths configured on the Iub interface.
an
Tran sources through admi ths under one transmission resou dwidth of the group. That is, all the paths urce group.
Whe and FRAATM), or a logical
signa ndwidth is used by the user plane.
ission control and congestion control described in the following sections are based on the bandwidth for the user plane of the transport layer. For example, the
nd l link mentioned above refers to the bandwidth for the user plane of ayer.
l and Management Planes
CP/ALCAP and the OAM flow is reserved for the control plane: Reserved bandwidth = bandwidth of the NCP x Factor of NBAP_NCP+ bandwidth of the CCP x Factor of NBAP_CCP+ bandwidth of the ALCAP x Factor of ALCAP+ OM bandwidth of the NodeB x Factor of IUB_OAM
z In IP transport, the bandwidth of the OAM flow is reserved for the control plane: Reserved bandwidth = OM bandwidth of the NodeB x Factor of IUB_OAM
smission resource group multiplexes and converges the transport layer ression control. For example, the bandwidth of all the parce group can be configured as the same as the ban can share the bandwidth of the transmission reso
n you configure a physical link (for example, IMA, UNI,port (VP or LP), the bandwidth for the control and management planes (including the
ling NCP/CCP/ALCAP and the OAM flow) is reserved, and the remaining ba
The transport layer adm
ba width for the physicathe transport l
3.7.1 Bandwidth Reserved for ControThe bandwidth reserved in ATM transport and in IP transport is different:
z In ATM transport, the bandwidth of the signaling NCP/C
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The parameters used to calculate the reserved bandwidth for the control and management planes are as follows:
3.7.2 Trand physical port constitute the structure of the RNC
ansmission resource management, as Figure 3-4 shown.
z Application Type z Factor
smission Resource Group The path, transmission resource group, antr
Figure 3-4 The structure of the RNC transmission resource management
Run the ADDNCOPT, ETH
PORTCTRLER command to add port resource controllers for IMA, UNI, FRAATM, ER, PPP, and MLPPP.
e
rce group.
ed tails, see 3.10
Admission Control.
3.8 Activit
data is transmitted. The activity factor is used by the admission control to increase the transmission resource usage during these periods.
n be applied on the Iub, Iur, Iu-CS, and Iu-PS interfaces and by actor, more users of a service can be admitted.
to the vice activity factor. For the PS Best Effort e same as the Guaranteed Bit Rate (GBR)
multiplied by the service activity factor.
sers for common channel and SRB are the same. For details, refer inciples.
Run the ADD LGCPORT, ADD VP, and ADD RSCGRP commands to add the transmission resourcgroups on the RNC. In the broad sense, a port controller also serves as a resource group, namely, a top-level resou
The port controller and transmission resource group (including the VP, LP, or customizresource group) are related to transmission resource admission control. For de
y Factor Due to the discontinuity of traffic, there are active periods during which data is transmitted and inactive periods during which no
The activity factors caadjusting the activity f
In most cases, when a service is established, the service admission bandwidth is equal required transmission bit rate multiplied by the ser(BE) service, the service admission bandwidth is th
The activity factors for all uto Iub Overbooking Key Pr
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3.9 Iub Overbooking Iub overbooking is used to increase transmission resource usage on the Iub interface.
For details, refer to Iub Overbooking Description.
3.10 Admission Control resources are enough to accept a
he new user's access request is
he admission control of the RNC transmission resources adopts a bottom-up multi-level ission control policy.
Admission Control is used to determine whether the systemnew user's access request. If the system resources are enough, taccepted; otherwise, the user will be rejected.
3.10.1 Multi-Level Admission Control Policy Tadm
Figure 3-5 shows a bottom-up multi-level admission control policy.
Figure 3-5 Bottom-up multi-level admission control policy
As shown in Figure 3-5, a user accessing the network from a path should go through the admission of the path, resource group, and physical port in turn. The user that passes all the admission can be successfully admitted by the transport layer.
The physical ports correspond to IMA, UNI, FRAATM, NCOPT, ETHER, PPP, and MLPPP. The transmission resource groups are of two types: the one automatically generated in the system and the one manually generated by the user. The latter one can only perform admission control but is not capable of shaping or back pressure.
Figure 3-6 shows the multi-level admission control policy for the RNC transmission resources.
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Figure 3-6 Multi-level admission control policy for the RNC transmission resources
Hub VP1, Leaf VP1, Leaf VP2, and Leaf VP3 are the four VPs configured by users, which correspond to four transmission resource groups. The user accessing the network from the NB2 should go through the admission of AAL2PATH, LeafVP1, HubVP1, physical port, and the user accessing the network from the NB4 should go through the admission of AAL2PATH, Leaf VP3, and physical port.
3.10.2 Admission Control Algorithm This section describes the admission control algorithm and takes the physical link as an example. The admission control policy for the transmission resource group is the same as that for the physical link.
The requirements for the general algorithm for bandwidth admission control vary with whether it is a new user, a handover user, or a rate upsizing user that is requiring admission.
For a new user, the following requirements apply:
z Total bandwidth allocated to the users on the path + required bandwidth for the new user < total bandwidth configured for the path bandwidth reserved for handover.
z Total bandwidth allocated to the users on the physical link + required bandwidth for the new user < total bandwidth of the physical link bandwidth reserved for handover.
For a handover user, the following requirements apply:
z Total bandwidth allocated to the users on the path + required bandwidth for the handover user < total bandwidth configured for the path.
z Total bandwidth allocated to the users on the physical link + required bandwidth for the handover user < total bandwidth of the physical link.
For a rate upsizing user, the following requirements apply:
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z Total bandwidth allocated to the users on the path + required bandwidth for the rate upsizing user < total bandwidth configured for the path congestion threshold.
z Total bandwidth allocated to the users on the physical link + required bandwidth for the rate upsizing user < total bandwidth of the physical link congestion threshold.
Physical link users consist of R99 users and HSPA users. For R99 users, the UL and DL control admission together. For HSPA users, the UL and DL control admission separately. First the UL controls admission. If the UL admission for HSPA users is approved, the DL controls admission and if the UL admission for HSPA users is rejected, the DL does not control admission.
Table 3-10 describes the admission control procedures for different combinations of services as well as UL and DL.
Table 3-10 R99 and HSPA service admission control
Service If... Then...
UL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
DL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for DL not Available".
UL R99 + DL R99
Both UL and DL admission fail Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate not Available".
UL R99 + DL HSDPA UL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
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Service If... Then...
DL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for DL not Available".
Both UL and DL admission fail Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
UL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
DL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for DL not Available".
UL HSUPA + DL R99
Both UL and DL admission fail Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
UL HSUPA + DL HSDPA UL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
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Service If... Then...
DL admission fails Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for DL not Available".
Both UL and DL admission fail Admission is rejected with the message "RAB ASSIGNMENT RESPONSE" and the reason is "Requested Maximum Bit Rate for UL not Available".
z For a path that belongs to a path group, admission control must be performed at both the path level and the path group level.
z For an IMA group or MLPPP group, the RNC automatically adjusts the maximum bandwidth available to the whole group and uses the new admission threshold if the bandwidth of an IMA link or MLPPP link changes.
The Resource Management Mode parameter is used for configuring a virtual port, or logical port on the Iub interface.
The CN Operator index can be used when setting the Resource Management Mode parameter.
The admission control algorithm has the following requirement for the parameter settings:
Bandwidth reserved for handover congestion threshold congestion resolve threshold
The congestion threshold and the congestion resolve threshold are used to prevent ping-pong effect.
Based on the preceding requirement, the user priorities are as follows:
Handover user > new user > rate upsizing user
The congestion thresholds consist of Forward congestion threshold and Backward congestion threshold, and the congestion resolve thresholds consist of Forward congestion clear threshold and Backward congestion clear threshold. For details, see 3.11 Congestion Control.
The parameters that are used for reserving bandwidth for handover users are as follows:
z Forward handover reserved bandwidth[KBIT/S] z Backward handover reserved bandwidth[KBIT/S]
3.10.3 Admission Procedure Primary and secondary paths are used in admission control. According to the mapping between traffic types and transmission resources, the RNC first selects the primary path for admission. If the admission on the primary path fails, then the admission on the secondary
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path is performed. For details about the mapping between traffic types and transmission resources, see 3.5 Traffic Type and Transmission Resource Mapping.
For example, assume that secondary paths are available for new users, handover users, and rate upsizing users. The following procedures describe the admission of these users on the Iub interface respectively.
The admission procedure for a new user is as follows:
Step 1 The new user tries to be admitted to available bandwidth 1 of the primary path, as shown in 1 of Figure 3-7.
Step 2 If the admission on the primary path is successful, the user is carried on the primary path.
Step 3 If the admission on the primary path fails, the user tries to be admitted to available bandwidth 2 of the secondary path, as shown in 2 of Figure 3-7.
Step 4 If the admission on the secondary path is successful, the user is carried on the secondary path. If not, the bandwidth admission request of the user is rejected.
----End
Figure 3-7 Admission procedure for a new user
Available bandwidth 1 = total bandwidth of the primary path - used bandwidth - handover reserved bandwidth Available bandwidth 2 = total bandwidth of the secondary path - used bandwidth - handover reserved bandwidth
The admission procedure for a handover user is as follows:
Step 1 The handover user tries to be admitted to available bandwidth 1 of the primary path, as shown in 1 of Figure 3-8.
Step 2 If the admission on the primary path is successful, the user is carried on the primary path.
Step 3 If the admission on the primary path fails, the user tries to be admitted to available bandwidth 2 of the secondary path, as shown in 2 of Figure 3-8.
Step 4 If the admission on the secondary path is successful, the user is carried on the secondary path. If not, the bandwidth admission request of the user is rejected.
----End
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Figure 3-8 Admission procedure for a handover user
Available bandwidth 1 = total bandwidth of the primary path - used bandwidth Available bandwidth 2 = total bandwidth of the secondary path - used bandwidth
The admission procedure for a rate upsizing user is as follows:
Step 1 The rate upsizing user tries to be admitted to available bandwidth 1 of the primary path, as shown in 1 of Figure 3-9.
Step 2 If the admission on the primary path is successful, the user is carried on the primary path.
Step 3 If the admission on the primary path fails, the user tries to be admitted to available bandwidth 2 of the secondary path, as shown in 2 of Figure 3-9.
Step 4 If the admission on the secondary path is successful, the user is carried on the secondary path. If not, the bandwidth admission request of the user is rejected.
----End
Figure 3-9 Admission procedure for a rate upsizing user
Available bandwidth 1 = total bandwidth of the primary path - used bandwidth - congestion reserved bandwidth Available bandwidth 2 = total bandwidth of the secondary path - used bandwidth - congestion reserved bandwidth
If no secondary paths are available for the users, the admission is performed only on the primary paths.
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3.11 Congestion Control Congestion Control describes the congestion detection method and the congestion handling on the Iub interface.
3.11.1 Congestion Detection Method The Forward congestion threshold and Backward congestion threshold parameters can be set for congestion detection when a path, port, or resource group is configured. The default value for both of the parameters is 0, which indicates that no congestion detection is performed. If the parameters are specified, the TRM performs congestion detection based on the parameter values. For a path, port, or resource group, it is also possible to set the Forward congestion clear threshold and Backward congestion clear threshold parameters, both of which are used to determine whether the congestion disappears.
Congestion detection can be triggered in either of the following ways:
z Bandwidth adjustment because of resource allocation, modification or release. z Change in the configured bandwidth or the congestion threshold. z Physical link fault.
For example, if the forward parameters of a port for congestion detection are defined as follows, with CLEAR being greater than CON:
z Configured bandwidth: AVE z Forward congestion threshold: CON z Forward congestion clear threshold: CLEAR z Used bandwidth: USED
Then, the mechanism of congestion detection on the port is as follows:
z The congestion occurs on the path when CON + USED AVE. z The congestion disappears from the path when CLEAR + USED < AVE.
The congestion detection for a path or resource group is similar to that for a port.
Generally, congestion thresholds only need to be set for a port or resource group. If different types of AAL2 paths or IP paths require different congestion thresholds, the parameters for the paths are set as required.
If a VP or LP is configured, congestion control is also applied to the VP or LP, and the congestion control mechanism is the same as that of a resource group.
3.11.2 Congestion Handling on the Iub Interface If congestion is detected when NodeB LDC algorithm switch is set to IUB_LDR-1, the RNC triggers the load reshuffling process after receiving the congestion alarm messages.
The congestion alarm only indicates limited bandwidth; it does not indicate that no users can connect to the network. If NodeB LDC algorithm switch is set to IUB_LDR-1, you should run the ADD NODEBLDR command to add NodeB LDR algorithm parameters and run ADD NODEBLDR to specify a unique NodeB name.
For details about the load reshuffling process, refer to Load Reshuffling.
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Congestion on other interface is described:
z Congestion detected on the Iur interface may trigger the SRNS relocation. For details, refer to Basic Types of SRNS Relocation.
z During flow control on Iu signaling, when congestion is detected on the signaling link towards a signaling point, the congestion status is reported to the RANAP subsystem. Then, the RANAP subsystem starts to discard user messages for services in the following order: short message > CS and PS call establishment > registration.
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4 TRM Parameters This chapter provides information on the effective level and configuration of the parameters
T meters .
Tab rs related to
related to TRM.
able 4-1 lists the para related to TRM
le 4-1 Paramete TRM
Parameter Name Effective Level Configuration Parameter IDon...
AAL2 path type PT DD RNC AAL2 Path(AAAL2PATH)
TX traffic record index TXTRFX D RNC IPOAPVC(ADIPOAPVC) AAL2 Path(ADD AAL2PATH)
RX traffic record index
RFX RXT SAAL(ADD SAALLNK) AAL2 Path(ADD AAL2PATH)
RNC
Service type ST SAALLNK/AAL2PATH/IPOAPVC/VPCLCX
RNC
using this ATM traffic record index(ADD ATMTRF)
IP path type PATHT ATH) IP Path(ADD IPP RNC
DSCP DSCP TH) RNC IP Path(ADD IPPA
Application Type rface
CTRLFACTOR)
TYPE control intelink(SET
RNC
Factor FACTOR RNC(SET CTRLFACTOR)
RNC
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Parameter Name Effective Level Configuration Parameter IDon...
Forward handover reserved bandwidth[KBIT/S]
FWDHORSVBW
Port(ADD PORTCTRLER) Transmission resource group(ADD RSCGRP) IP Path(ADD IPPATH) AAL2 Path(ADD AAL2PATH) LGCPORT(ADD LGCPORT) VP(ADD VP)
RNC
Backward handover reserved bandwidth[KBIT/S]
BWDHORSVBW
Port(ADD PORTCTRLER) Transmission resource group(ADD RSCGRP) IP Path(ADD IPPATH) AAL2 Path(ADD AAL2PATH) LGCPORT(ADD LGCPORT) VP(ADD VP)
RNC
CN Operator index CnOpIndex RNC(ACT LICENSE) RNC
Forward congestion threshold[KBIT/S]
FWDCONGBW
AAL2 Path(ADD AAL2PATH) IP Path(ADD IPPATH) Transmission resource group(ADD RSCGRP) Port(ADD PORTCTRLER) VP(ADD VP) LGCPORT(ADD LGCPORT)
RNC
Backward congestion threshold[KBIT/S]
BWDCONGBW
Port(ADD PORTCTRLER) Transmission resource group(ADD RSCGRP) IP Path(ADD IPPATH) AAL2 Path(ADD AAL2PATH) LGCPORT(ADD LGCPORT) VP(ADD VP)
RNC
RAN Transmission Resource Management Description 4 TRM Parameters
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Parameter Name Effective Level Configuration Parameter IDon...
Forward congestion clear threshold[KBIT/S]
FWDCONGCLRBW
Port(ADD PORTCTRLER) Transmission resource group(ADD RSCGRP) IP Path(ADD IPPATH) AAL2 Path(ADD AAL2PATH) LGCPORT(ADD LGCPORT) VP(ADD VP)
RNC
Backward congestion clear threshold[KBIT/S]
BWDCONGCLRBW
Port(ADD PORTCTRLER) Transmission resource group(ADD RSCGRP) IP Path(ADD IPPATH) AAL2 Path(ADD AAL2PATH) LGCPORT(ADD LGCPORT) VP(ADD VP)
RNC
NodeB LDC algorithm switch
NodeBLdcAlgoSwitch
NodeB(ADD NODEBALGOPARA)
RNC
Type of the virtual port
LPNTYPE VP(ADD VP)
RNC
The Virtual Port Number
VP VP(ADD VP)
RNC
The bearing type of the virtual port
CARRYT VP(ADD VP)
RNC
The Upper Virtual port Number
UPPERVP VP(ADD VP)
RNC
Forward bandwidth [kpbs]
TXBW VP(ADD VP)
RNC
Backward bandwidth [kpbs]
RXBW VP(ADD VP)
RNC
Bearing VP No. CARRYVPN AAL2 Path(ADD AAL2PATH) IPOAPVC(ADD IPOAPVC)
RNC
Logic port No. LPN LGCPORT(ADD LGCPORT)
RNC
Resource management mode
RSCMNGMODE
LGCPORT(ADD LGCPORT)
RNC
4 TRM Parameters RAN
Transmission Resource Management Description
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Issue 02 (2008-07-30)
Parameter Name Effective Level Configuration Parameter IDon...
Auto adjust bandwidth switch
BWADJ LGCPORT(ADD LGCPORT)
RNC
Max bandwidth [64kbps]
MAXBW LGCPORT(ADD LGCPORT)
RNC
Min bandwidth [64kbps]
MINBW LGCPORT(ADD LGCPORT)
RNC
NodeB name NodeBName NodeB(ADD NODEBLDR)
RNC
TRMMAP ID TMI RNC(ADD TRMMAP) RNC
Gold user TRMMAP index
TMIGLD Adjacent Node(ADD ADJMAP)
RNC
Silver user TRMMAP index
TMISLV Adjacent Node(ADD ADJMAP)
RNC
Copper user TRMMAP index
TMIBRZ Adjacent Node(ADD ADJMAP)
RNC
RAN Transmission Resource Management Description 5 TRM Reference Documents
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5 TRM Reference Documents TRM Reference Documents lists the reference documents related to the feature.
ITU-T Recommendation I.361: B-ISDN ATz M Layer Specification tation layer specification: Type 2 AAL
z g for ATM (IMA) Specification Version 1.1
ides a standard method for
z RFC3153: PPP Multiplexing (PPPmux) z RFC894: Standard for the Transmission of IP Datagrams over Ethernet Networks z RFC1042: A Standard for the Transmission of IP Datagrams over IEEE 802 Networks
z ITU-T Recommendation I.363.2: ATM Adapz ITU-T Recommendation I.366.1: Segmentation and Reassembly Service Specific
Convergence Sublayer for the AAL type 2 AF-TM-0121.000: Traffic Management 4.1
z AF-PHY-0086.001: Inverse Multiplexinz RFC1661: The Point-to-Point Protocol (PPP), prov
transporting multi-protocol datagrams over point-to-point links z RFC1662: PPP in HDLC-link Framing z RFC1990: The PPP Multilink Protocol (ML-PPP) z RFC2686: The Multi-Class Extension to Multi-link PPP (MC-PPP)
1 TRM Change History 2 TRM Introduction 3 TRM Principles 3.1 ATM Transmission Resources 3.1.1 ATM Physical Layer Resources 3.1.2 AAL2 Path Resources 3.1.3 ATM Virtual Port Shaping
IP Transmission Resources 3.2.1 Physical and Data Link Layer Resources 3.2.2 IP Path Resources 3.2.3 IP Logical Port Shaping 3.2.4 IP Performance Management
3.3 Iub ATM/IP Transmission Resources 3.4 Paths on the Iur, Iu-CS, and Iu-PS Interfaces 3.4.1 Paths on Iur Interface 3.4.2 Paths on Iu-CS Interface 3.4.3 Paths on Iu-PS Interface
3.5 Traffic Type and Transmission Resource Mapping 3.5.1 ATM Mapping Table 3.5.2 IP Mapping Table 3.5.3 ATM/IP Mapping Table
3.6 Differentiated Service 3.6.1 DiffServ Based on QoS 3.6.2 DiffServ Based on HSDPA 3.6.3 DiffServ Based on ATM PVC 3.6.4 DiffServ Based on DSCP
3.7 Transport Layer Group Bandwidth Management 3.7.1 Bandwidth Reserved for Control and Management Planes 3.7.2 Transmission Resource Group
3.8 Activity Factor 3.9 Iub Overbooking 3.10 Admission Control 3.10.1 Multi-Level Admission Control Policy 3.10.2 Admission Control Algorithm 3.10.3 Admission Procedure
3.11 Congestion Control 3.11.1 Congestion Detection Method 3.11.2 Congestion Handling on the Iub Interface
4 TRM Parameters 5 TRM Reference Documents