看LOG學(xué)4G(12)-專用承載(Dedicated EPS Bearer)激活

看LOG學(xué)4G(12)---專用承載(DedicatedEPSBearer)激活一、什么是承載

在4G網(wǎng)絡(luò)中“EPS承載”就是在EPS(EvolvedPacketswitchedSystem)系統(tǒng)內(nèi)數(shù)據(jù)(上傳下達(dá))流動的管道。

圖1.EPS承載示意圖如上圖所示EPS承載建立中涉及多個網(wǎng)絡(luò)組件；EPS承載是多個網(wǎng)元承載的復(fù)合體，其具體結(jié)構(gòu)如下圖所示：圖2.端至端承載示意圖二、4G網(wǎng)絡(luò)承載結(jié)構(gòu)

如圖2所示，在4G(LTE)網(wǎng)絡(luò)中承載由兩個主要部分組成，它們分別是：無線承載(RadioBeare）核心網(wǎng)絡(luò)承載(S1Beare）。三、4G網(wǎng)絡(luò)承載分類在4G(LTE)網(wǎng)絡(luò)中的承載分為兩種類型，它們分別是“默認(rèn)EPS承載”和“專用EPS承載”，它們特點和作用分別如下：“默認(rèn)EPS承載”(DefaultEPSBearer)；

在Attach過程中建立;

為UE分配IP地址;

沒有特定的QoS(僅應(yīng)用標(biāo)稱QoS);

終端建立PDP上下文?！皩Ｓ肊PS承載”(DedicatedEPSBearer)

通常在空閑模式后的呼叫建立期間建立(也可以在Attach期間建立)；

不為UE分配任何額外的IP地址;

鏈接到指定的默認(rèn)EPS承載;

有一個特定(通常是GBR)QoS;

終端建立輔助PDP上下文。四、4G網(wǎng)絡(luò)承載配置在LTE中承載中終端(UE)的無線承載部分和核心網(wǎng)絡(luò)承載都由單個“RRC連接重配置(RRCConnectionReconfiguration”消息進(jìn)行配置，其中一部分用于無線配置參數(shù)，另一部分用于核心網(wǎng)絡(luò)配置參數(shù)。五、4G網(wǎng)絡(luò)中專用EPS承載消息(部分注釋)完成無線接入的終端(UE)由網(wǎng)絡(luò)側(cè)發(fā)起專用承載的激活流程，終端在完成承載激活后回復(fù)專用承載激活接收。

圖3.4G網(wǎng)絡(luò)專用承載激活實例1.activateDedicatedEPSBearerContextRequest(專用承載上下文激活請求）

MsgEnter0>

72

----0010T

..no-security-protection-SM-message(SM信息無加密）

0

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

0..procedure-transaction-identity:0x0(0)(進(jìn)程傳輸ID:0)

....msg-body2>

......activateDedicatedEPSBearerContextRequest(專用承載上下文激活請求）3>

--

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

..linked-EPS-bearer-identity:ePS-bearer-identity-value6(6)(EPS承載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運行編碼: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)(數(shù)據(jù)包過濾方向:僅下行)

----0000

..............packet-filter-id:0x0(0)(數(shù)據(jù)包過濾ID:0013>

............packet-filter-evaluation-precedence:0x0(0)（數(shù)據(jù)包過濾評估進(jìn)程:0)14>

..............packet-filter-content(數(shù)據(jù)包過濾內(nèi)容）

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

.....packet-filter-component-type-id:iPv6-remote-addr(32)(數(shù)據(jù)包過濾類型ID:ipv6遠(yuǎn)端地址）

..................packet-filter-content-value(數(shù)據(jù)包過濾內(nèi)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)（遠(yuǎn)端單一端口：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)（延遲級別:1)

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

(可靠級別：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)(進(jìn)程級別:高級別)195>

1F

000-----

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

---1.mean-throughput:best-effort(31)（平均吞吐率:盡高）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誤碼率:12%)201>

28

..........transfer-delay:delay-100ms(10)（傳輸時延:100ms）

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

（用戶數(shù)據(jù)傳輸優(yōu)先級）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)(靜態(tài)資源描述:語音）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(無線側(cè)優(yōu)先級)

----0---

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

---.....radio-priority-level-value:priority-level1(1)(無線側(cè)優(yōu)先級:1)2.activateDedicatedEPSBearerContextAccept(專用承載上下文激活接收）

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承載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