1、huawei technologies co., ltd.all rights reserved internal gprs原理及聯通實現 huawei technologies co., ltd.all rights reservedpage 2 huawei technologies co., ltd.all rights reservedpage 3 gprs: general packet radio services gsm 2.5g gprs umts ps ims 電路域 初始階段 能力擴展 最終發展 huawei technologies co., ltd.all rights

2、 reservedpage 4 gprs業務功能 2g 2.5g 3g b3g 移動業務移動業務 mobile voice/sms mobile narrow band internet high quality mobile experience 帶寬帶寬 multimedia and mobile broadband internet gprs: 低速的并發分組業務低速的并發分組業務 mms wap information internet browsing low speed vpn edge: 中等速率業務中等速率業務 移動 tv 流媒體 多媒體 vpn (移動辦公) 在線游戲 umt

3、s: 高速率業務高速率業務 vod 流媒體 poc 城市導航 huawei technologies co., ltd.all rights reservedpage 5 ps 能提供多種數據業務能提供多種數據業務 multiple data services game 流媒體流媒體 瀏覽瀏覽 vp mms poc huawei technologies co., ltd.all rights reservedpage 6 gprs 網絡結構 gp rnc iu-ps ga cg bg dns/dhcp server gn node b umts utran iub gb bts bsc/pc

4、u gsm/gprs bss abis x-1/2/3 grgdge lggsgf scpsmscgmlchlreirmsc/vlr gomsnmp gi mmsc intranet/internet firewall radius other plmn wap gateway sgsn lig nmsm2000 ggsn gc huawei technologies co., ltd.all rights reservedpage 7 重要的網元實體 sgsn cg ggsn gn/gp gaga mobility management session management 數據包的路由和數

5、據包的路由和轉發轉發 計費計費 合法合法監監聽聽 ntp 會會話話管理管理session management 數據包路由和數據包路由和轉發轉發 計費計費 動態動態地址分配地址分配 業務業務管理管理 dpi 實時話單實時話單采集采集 話單話單的的緩緩存存 話單話單的的預處預處理理 發發送送話單話單到到計費計費中心中心 hlr gr 保存保存gprs簽約簽約數據數據 用用戶鑒戶鑒全全 提供位置和路由信息提供位置和路由信息 huawei technologies co., ltd.all rights reservedpage 8 pcu (packet control unit): p 無線資源

6、管理無線資源管理 p 數據包的路由和轉發數據包的路由和轉發 sgsn gprs backbone sgsn bts bsc pcu btsbsc pcu bts abis bsc bts bsc pcu gb abis gb gb 重要的網元-pcu huawei technologies co., ltd.all rights reservedpage 9 重要的網元- rnc iu-bc rnc rnc nodeb nodeb nodeb cs sgsn cbc ueutrancn uuiu iu-cs iu-ps iu-bc iur iub iub iub rnc (radio netw

7、ork controller) : 提供系統消息廣播和系統接入控制 提供移動性管理，切換決策 提供無線資源管理和控制功能 huawei technologies co., ltd.all rights reservedpage 10 重要的網元- dns sgsnggsn(a) ms bss internet/ intranet ggsn(b) dns 在在pdp激活流程中解析激活流程中解析apn：apn=ggsn ip 在路由區更新流程中解析在路由區更新流程中解析rai：rai=sgsn ip 在重定位流程中解析在重定位流程中解析rncid：rncid=sgsn ip(umts) huawe

8、i technologies co., ltd.all rights reservedpage 11 聯通dns組網 廣東省dns 北京市dns 廣東根dns北京根dns grx1grx2 數據備份通道 優選解析通道 備選解析通道 遞歸遞歸解析解析 huawei technologies co., ltd.all rights reservedpage 12 gb 接口 sgsn the sim/usim shall be considered as invalid for gprs services until switching off or the sim/usim is removed

9、. no effect gprs services not allowed in this plmn shall set the gprs update status to gu3 roaming not allowed plmn not allowedshall set the gprs update status to gu3 roaming not allowed), shall reset the gprs attach attempt counter and shall change to state gmm-deregistered the ms shall perform a p

10、lmn selection location area not allowed roaming not allowed in this location area no suitable cells in location areashall set the gprs update status to gu3 roaming not allowed the ms shall search for a suitable cell in another location area in the same plmn huawei technologies co., ltd.all rights re

11、servedpage 33 參數域參數域描述描述a/gb 模式模式 iu 模式模式 imsiimsi is the main reference key.xx mm statemobility management state, idle, standby, ready, pmm detached, pmm idle, or pmm connected. xx p tmsipacket temporary mobile subscriber identity.xx p tmsi signaturea signature used for identification checking purp

12、oses.xx imeiinternational mobile equipment identityxx msisdnthe basic msisdn of the ms.xx routeing areacurrent routeing area.xx cell identitycurrent cell in ready state, last known cell in standby or idle state.x cell identity agetime elapsed since the last llc pdu was received from the ms at the sg

13、sn.x service area codelast known sac when initial ue message was received or location reporting procedure was executed. x service area code agetime elapsed since the last sac was received at the 3g sgsn.x vlr numberthe vlr number of the msc/vlr currently serving this ms.xx new sgsn addressthe ip add

14、ress of the new sgsn where buffered and not sent n pdus should be forwarded to. xx authentication vectorsauthentication and ciphering parameters (authentication triplets or quintets).xx kccurrently used a/gb mode ciphering key.x2) cksnciphering key sequence number of kc.x2) ciphering algorithmselect

15、ed ciphering algorithm (gea).xx ck currently used iu mode ciphering key.1)x mm 上下文關鍵參數 huawei technologies co., ltd.all rights reservedpage 34 ik currently used iu mode integrity key.1)x ksikey set identifier.1)x ms radio access capabilityms radio access capabilities.x ms network capabilityms networ

16、k capabilities.xx drx parametersdiscontinuous reception parameters.xx radio priority smsthe rlc/mac radio priority level for uplink sms transmission.x mnrgindicates whether activity from the ms shall be reported to the hlr.xx ngafindicates whether activity from the ms shall be reported to the msc/vl

17、r.xx ppfindicates whether paging for ps and cs services can be initiated.xx subscribed charging characteristicsthe charging characteristics for the ms, e.g. normal, prepaid, flat-rate, and/or hot billing subscription. xx sms parameterssms-related parameters, e.g. operator-determined barring.xx recov

18、eryindicates if hlr or vlr is performing database recovery.xx gprs csioptional gprs camel subscription information, see 3gpp ts 23.016xx odb for ps parametersindicates that the status of the operator determined barring for packet oriented services.xx mm context huawei technologies co., ltd.all right

19、s reservedpage 35 分離類型 87654321 detach type iei power off type of detach type of detach (octet 1) in the ms to network direction: bits 321 001gprs detach 010imsi detach 011combined gprs/imsi detach all other values are interpreted as combined gprs/imsi detach by this version of the protocol. in the

20、network to ms direction: bits 321 001re-attach required 010re-attach not required 011imsi detach (after vlr failure) all other values are interpreted as re-attach not required by this version of the protocol. detach type ie 分離類型 imsi detach; gprs detach; combined gprs / imsi detach (ms-initiated onl

21、y). 與分離流程有關的網元 ms sgsn hlr network side huawei technologies co., ltd.all rights reservedpage 36 分離流程 (手機發起) 功能功能 手機通知網手機通知網絡絡不再附著在不再附著在gprs網網絡絡 結結果果 sgsn不在提供服不在提供服務務 mm狀狀態態遷移到遷移到idle或者或者pmm-detached 兩種兩種imsi分離的分離的場場景景 已已經經gprs附著的手機附著的手機發發起分離起分離請請求，通求，通過過 ps網網絡絡從從cs域分離域分離 手機非手機非gprs attach狀狀態態下，要求從下，

22、要求從cs網網絡絡 分離分離 huawei technologies co., ltd.all rights reservedpage 37 分離流程 (sgsn radio priority; packet flow id; pdp address (in case of the ggsn-initiated modification procedure); tft (in case of ms-initiated modification procedure). huawei technologies co., ltd.all rights reservedpage 92 sgsn發起的修

23、改流程 ggsn 2. update pdp context response 1. update pdp context request sgsnutranms 3. modify pdp context request 4. modify pdp context accept 5. radio access bearer modification c1 6. invoke trace teid, nsapi, qos negotiated, trace reference, trace type, trigger id, omc identity teid: tunnel identifi

24、er nsapi: network layer service access point identifier huawei technologies co., ltd.all rights reservedpage 93 ggsn發起的修改流程 ggsn 5. update pdp context response 1. update pdp context request sgsnutranms 2. modify pdp context request 3. modify pdp context accept 4. radio access bearer modification c1

25、teid, nsapi, pdp address, qos requested huawei technologies co., ltd.all rights reservedpage 94 ms發起的修改流程 ggsn 3. update pdp context response 2. update pdp context request sgsnutranms 1. modify pdp context request 5. modify pdp context accept 4. radio access bearer modification c1 ti, qos requested,

26、 tft ti : transaction identifier tft: traffic flow template huawei technologies co., ltd.all rights reservedpage 95 rnc發起的修改流程 lrnc modify rab may cause sgsn modify pdp context. 1. rab modify request rnc sgsn 2. sgsn initiated pdp context modification procedure ms ggsn rab id, rab parameter values r

27、ab: radio access bearer huawei technologies co., ltd.all rights reservedpage 96 huawei technologies co., ltd.all rights reservedpage 97 手機發起的去激活流程 lgprs 2g-ggsn 4. deactivate pdp context accept 3. delete pdp context response 3. delete pdp context request 1. deactivate pdp context request 2g-sgsnms 2

28、. security functions c1 lumts 3g-ggsn 3. d elete pd p context response 3. d elete pd p context request 3g-sgsnutra nm s 1. d eactivate pdp context request 4. d eactivate pdp context accept 5. radio access b earer release c1 huawei technologies co., ltd.all rights reservedpage 98 網絡發起的去激活流程 ggsn 1. d

29、elete pdp context response 1. delete pdp context request sgsnutranms 2. deactivate pdp context request 2. deactivate pdp context accept 3. radio access bearer release c1 ggsn 3. delete pdp context response 1. delete pdp context request sgsnutranms 2. deactivate pdp context request 2. deactivate pdp

30、context accept 4. radio access bearer release c1 lsgsn發起 lggsn發起 huawei technologies co., ltd.all rights reservedpage 99 huawei technologies co., ltd.all rights reservedpage 100 rab 釋放流程 lrab釋放流程可釋放一個或多個rab 3g-ggsn 1. rab release request 3g-sgsnutranms 3. release radio bearer(s) 2. rab assignment re

31、quest 4. rab assignment response 保留流程允許釋放rab后，保留pdp上下文。 后續如果手機重新發起數傳，則核心網根據存在的pdp上下文重建 huawei technologies co., ltd.all rights reservedpage 101 rab重建 lin case of uplink data to be transfer for the active pdp context without rab: background or interactive traffic class pdp context: ue initiates the s

32、ervice request procedure (service type = data) to re-establish pdp context. streaming or conversational traffic class pdp context: ue initiates the pdp context modification procedure to re- establish pdp context, or deactivation procedure to delete the pdp context. lin case of downlink data to be transfer for the active pdp context without rab: cn must first page the ue, then re-establish the rab by network-initiated service request procedure. huawei t