看LOG学4G(12)-专用承载(Dedicated EPS Bearer)激活

看LOG学4G(12)---专用承载(DedicatedEPSBearer)激活一、什么是承载

在4G网络中“EPS承载”就是在EPS(EvolvedPacketswitchedSystem)系统内数据(上传下达)流动的管道。

图1.EPS承载示意图如上图所示EPS承载建立中涉及多个网络组件；EPS承载是多个网元承载的复合体，其具体结构如下图所示：图2.端至端承载示意图二、4G网络承载结构

如图2所示，在4G(LTE)网络中承载由两个主要部分组成，它们分别是：无线承载(RadioBeare）核心网络承载(S1Beare）。三、4G网络承载分类在4G(LTE)网络中的承载分为两种类型，它们分别是“默认EPS承载”和“专用EPS承载”，它们特点和作用分别如下：“默认EPS承载”(DefaultEPSBearer)；

在Attach过程中建立;

为UE分配IP地址;

没有特定的QoS(仅应用标称QoS);

终端建立PDP上下文。“专用EPS承载”(DedicatedEPSBearer)

通常在空闲模式后的呼叫建立期间建立(也可以在Attach期间建立)；

不为UE分配任何额外的IP地址;

链接到指定的默认EPS承载;

有一个特定(通常是GBR)QoS;

终端建立辅助PDP上下文。四、4G网络承载配置在LTE中承载中终端(UE)的无线承载部分和核心网络承载都由单个“RRC连接重配置(RRCConnectionReconfiguration”消息进行配置，其中一部分用于无线配置参数，另一部分用于核心网络配置参数。五、4G网络中专用EPS承载消息(部分注释)完成无线接入的终端(UE)由网络侧发起专用承载的激活流程，终端在完成承载激活后回复专用承载激活接收。

图3.4G网络专用承载激活实例1.activateDedicatedEPSBearerContextRequest(专用承载上下文激活请求）

MsgEnter0>

72

----0010T

..no-security-protection-SM-message(SM信息无加密）

0

....ePS-bearer-identity:0x7(7)（EPS承载ID:7)1>

0..procedure-transaction-identity:0x0(0)(进程传输ID:0)

....msg-body2>

......activateDedicatedEPSBearerContextRequest(专用承载上下文激活请求）3>

--

........spare-half-octet:0x0(0)

..linked-EPS-bearer-identity:ePS-bearer-identity-value6(6)(EPS承载ID:6)4>

05

00000101L

........sDF-QoS5>

01

0001

..........qCI:0x1(1)(QCI:1)6>

34

..........maximum-bit-rate-for-uplink:0x34(52)(上行最大速率:52)7>

34

..........maximum-bit-rate-for-downlink:0x34(52)(下行最大速率:52)8>

34

..........guaranteed-bit-rate-for-uplink:0x34(52)(上行GBR速率:52)9>

34

.........guaranteed-bit-rate-for-downlink:0x34(52)(下行GBR速率:52)10>

01L

........tFT11>

24

........tft-operation-code:create-new-TFT(1)(TFT运行编码:生成新TFT(1)

---0

..........e-bit:parameters-list-is-not-included(0)

----0100

..........number-of-packet-filters:0x4(4)

..........packet-filter-list2

............Create-packet-filter12>

10

00------

..............spare:0x0(0)

--01-......packet-filter-direction:downlink-only(1)(数据包过滤方向:仅下行)

----0000

..............packet-filter-id:0x0(0)(数据包过滤ID:0013>

............packet-filter-evaluation-precedence:0x0(0)（数据包过滤评估进程:0)14>

..............packet-filter-content(数据包过滤内容）

................Packet-filter-content15>

.....packet-filter-component-type-id:iPv6-remote-addr(32)(数据包过滤类型ID:ipv6远端地址）

..................packet-filter-content-value(数据包过滤内容值）

....................ipv631>

...............ipv6-addr:00000000000000000000000000000000

47>

................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content48>

.......packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value49>

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content50>

.................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value52>

....................single-local-port:0x792c(31020)

................Packet-filter-content53>

.................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value55>

F

....................single-remote-port:0xffff(65535)（远端单一端口：65535）

............Create-packet-filter56>

21

00------

..............spare:0x0(0)

--10----

..............packet-filter-direction:uplink-only(2)

----0001

..............packet-filter-id:0x1(1)57>

..............packet-filter-evaluation-precedence:0x1(1)58>

..............packet-filter-content

................Packet-filter-content59>

.................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv675>....................ipv6-addr:00000000000000000000000000000000

91>

....................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content92>

............packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value93>

11

00010001

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content94>

...............packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value96>

2C

00101100

....................single-local-port:0x792c(31020)

................Packet-filter-content97>

..........packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value99>

....................single-remote-port:0xffff(65535)

............Create-packet-filter100>

12

00------

..............spare:0x0(0)

--01----

..............packet-filter-direction:downlink-only(1)

----0010

..............packet-filter-id:0x2(2)101>

..............packet-filter-evaluation-precedence:0x80(128)102>

29

00101001L

..............packet-filter-content

................Packet-filter-content103>

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv6119>

...................ipv6-addr:00000000000000000000000000000000

135>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content136>

30

00110000

..................packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value137>

11

00010001

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content138>

40

01000000

..................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value140>

2D

00101101

....................single-local-port:0x792d(31021)

................Packet-filter-content141>

50

..................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value143>

FF

....................single-remote-port:0xffff(65535)

............Create-packet-filter144>

23

00------

..............spare:0x0(0)

--10----

..............packet-filter-direction:uplink-only(2)

----0011

..............packet-filter-id:0x3(3)145>

81

..............packet-filter-evaluation-precedence:0x81(129)146>

29

00101001L

..............packet-filter-content

................Packet-filter-content147>

20

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv6163>

....................ipv6-addr:00000000000000000000000000000000

179>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content180>

30

00110000

..................packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value181>

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content182>

..................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value184>

....................single-local-port:0x792d(31021)

................Packet-filter-content185>

..................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value187>

....................single-remote-port:0xffff(65535)189>

01

00000001L

........transaction-identifier190>

20

0-------

..........ti-flag:0x0(0)

-010----

..........ti-value:0x2(2)

----0000

..........spare:0x0(0)192>

0C

00001100L

........negotiated-QoS193>

0C

00------

..........spare:0x0(0)

--001---

..........delay-class:delay-class1(1)（延迟级别:1)

........reliability-class:unacknowledged-GTP-LLC-RLC-Protected-data(4)

(可靠级别：UNACKGTP-LLC-RLC-Protected-data)194>

31

0

..........peak-throughput:upto4000(3)(峰值吞吐率:4000)

----0---

..........spare1:0x0(0)

----......precedence-class:high-priority(1)(进程级别:高级别)195>

1F

000-----

..........spare2:0x0(0)

---1.mean-throughput:best-effort(31)（平均吞吐率:尽高）196>

31

001-----

..........traffic-Class:conversational-class(1)

---10---

..........delivery-order:without-delivery-order(2)

-----001

..........delivery-of-erroneous-SDU:no-detect(1)197>.....maximum-SDU-size:maximum-SDU-size-1500Bytes(150)

(SDU最大尺寸:1500Bytes)198>

.........maximum-bit-rate-for-uplink:maximum-52kbps(52)

(上行最大吞吐率:52kbps)199>

.......maximum-bit-rate-for-downlink:maximum-52kbps(52)

(下行最大吞吐率:52kbps)200>

71

0111----

..........residual-BER:rber15(7)

(Rbler:15%)

..........sDU-error-ratio:error-ratio12(1)（SDU误码率:12%)201>

28

..........transfer-delay:delay-100ms(10)（传输时延:100ms）

.........traffic-Handling-priority:subscribed-traffic-handling-priority(0)

（用户数据传输优先级）202>

..........guaranteed-bit-rate-for-uplink:guaranteed-bit-rate-52kbps(52)

(上行GBR速率:52kbps)203>

..........guaranteed-bit-rate-for-downlink:guaranteed-bit-rate-52kbps(52)

(下行GBR速率:52kbps)204>

..........spare3:0x0(0)

..........signal-ling-Indicat-ion:not-optimised-for-signalling-traffic(0)

..........source-Statistics-Descriptor:speech(1)(静态资源描述:语音）205>

32

00110010T

........negotiated-LLC-SAPI206>

03

0000----

..........spare:0x0(0)

----0011

..........lLC-SAPI-value:sAPI3(3)（ILC-SAPI值:sAPI3)207>

81

1000----T

........radio-priority(无线侧优先级)

----0---

..........spare:0x0(0)

---.....radio-priority-level-value:priority-level1(1)(无线侧优先级:1)2.activateDedicatedEPSBearerContextAccept(专用承载上下文激活接收）

MsgEnter0>

72

----0010T

..no-security-protection-SM-message

0111----

....ePS-bearer-identity:0x7(7)1>

00

00000000

....procedure-transaction-identity:0x0(0)

....msg-body2>

C6

11000110T

......activateDedicatedEPSBearerContextAccept3.activateDedicatedEPSBearerContextRequest

MsgEnter0>

82

----0010T

..no-security-protection-SM-message

1000----

....ePS-bearer-identity:0x8(8)（EPS承载ID:8)1>

00

00000000

....procedure-transaction-identity:0x0(0)

....msg-body2>

C5

......activateDedicatedEPSBearerContextRequest3>

06

0000----

........spare-half-octet:0x0(0)

----0110

........linked-EPS-bearer-identity:ePS-bearer-identity-value6(6)4>

05

........sDF-QoS5>

02

..........qCI:0x2(2)(QCI:2)6>

87

..........maximum-bit-rate-for-uplink:0x87(135)(上行最大比特率:135)7>

87

..........maximum-bit-rate-for-downlink:0x87(135)(下行最大比特率:135)8>

87

..........guaranteed-bit-rate-for-uplink:0x87(135)(上行GBR比特率:135)9>

87

..........guaranteed-bit-rate-for-downlink:0x87(135)(下行GBR比特率:135)10>

B1

10110001L

........tFT11>

24

..........tft-operation-code:create-new-TFT(1)

---0----

..........e-bit:parameters-list-is-not-included(0)

----0100

..........number-of-packet-filters:0x4(4)

..........packet-filter-list2

............Create-packet-filter12>

10

00------

..............spare:0x0(0)

--01----

..............packet-filter-direction:downlink-only(1)

----0000

..............packet-filter-id:0x0(0)13>

C0

11000000

..............packet-filter-evaluation-precedence:0xc0(192)14>

..............packet-filter-content

................Packet-filter-content15>

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv631>

......................ipv6-addr:00000000000000000000000000000000

47>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content48>

..........packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value49>

11

00010001

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content50>

..................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value52>

C0

11000000

....................single-local-port:0x90c0(37056)

................Packet-filter-content53>

.................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value55>

FF

....................single-remote-port:0xffff(65535)

............Create-packet-filter56>

21

00------

..............spare:0x0(0)

--10----

..............packet-filter-direction:uplink-only(2)

----0001

..............packet-filter-id:0x1(1)57>

..............packet-filter-evaluation-precedence:0xc1(193)58>

................Packet-filter-content59>

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv675>

......................ipv6-addr:00000000000000000000000000000000

91>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content92>

...........packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value93>

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content94>

..................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value96>

C0

11000000

....................single-local-port:0x90c0(37056)

................Packet-filter-content97>

.................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value99>

FF

11111111

....................single-remote-port:0xffff(65535)

............Create-packet-filter100>

12

00------

..............spare:0x0(0)

--01----

..............packet-filter-direction:downlink-only(1)

----0010

..............packet-filter-id:0x2(2)101>

E0

11100000

..............packet-filter-evaluation-precedence:0xe0(224)102>

................Packet-filter-content103>

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv6119>

......................ipv6-addr:00000000000000000000000000000000

135>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content136>

..........packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value137>

11

00010001

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content138>

..................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value140>

C1

11000001

....................single-local-port:0x90c1(37057)

................Packet-filter-content141>

..................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value143>

FF

11111111

....................single-remote-port:0xffff(65535)

............Create-packet-filter144>

23

00------

..............spare:0x0(0)

--10----

..............packet-filter-direction:uplink-only(2)

----0011

..............packet-filter-id:0x3(3)145>

E1

11100001

..............packet-filter-evaluation-precedence:0xe1(225)146>

................Packet-filter-content147>

..................packet-filter-component-type-id:iPv6-remote-addr(32)

..................packet-filter-content-value

....................ipv6163>

......................ipv6-addr:00000000000000000000000000000000

179>

......................ipv6-mask:00000000000000000000000000000000

................Packet-filter-content180>

...........packet-filter-component-type-id:protocol-identifier-Next-header(48)

..................packet-filter-content-value181>

11

00010001

....................protocol-id-or-Next-header-value:0x11(17)

................Packet-filter-content182>

.................packet-filter-component-type-id:single-local-port(64)

..................packet-filter-content-value184>

C1

11000001

....................single-local-port:0x90c1(37057)

................Packet-filter-content185>

0000

..................packet-filter-component-type-id:single-remote-port(80)

..................packet-filter-content-value187>

FF

11111111

....................single-remote-port:0xffff(65535)189>

01

00000001L

........transaction-identifier190>

30

0-------

..........ti-flag:0x0(0)

-011----

..........ti-value:0x3(3)

----0000

..........spare:0x0(0)T

192>

........negoti