[11MAY2011] Due to new contract signed today with new employor, I am not able to update this page from 13 JUN 2011.
[11MAY2011] 因新工作簽訂新合約,本頁面自2011年6月13日起,除錯誤之處,將不再做更動。轉載煩請付上原文連結
This article is for whom are also interested in the world behind our daily mobile phone communication.
這篇文章分享給所有有興趣接觸UE端3GPP規格的人們;3GPP規格份量很多, 以下以一個比較常接觸WCDMA(UMTS/FDD)手機端Layer 3的engineer的角度而寫。如果您有任何指教、更正或疑問,歡迎來信: winnielee0204@hotmail.com
★ 去哪邊下載3GPP spec?
★ 小貓很推薦的3GPP規格的非官方網站:
(以下連結至R10, 可透過該頁前往其他Release, 亦有一頁收集GSM spec)
http://www.qtc.jp/3GPP/3gpp_rel10.html
★ ETSI(3GPP最主要成員之一)下載:(免費但需註冊,優點為搜尋方便。)
http://pda.etsi.org/pda/queryform.asp
★ 3GPP官方網頁:
http://www.3gpp.org/Specifications
★ 3GPP官方FTP: (如果清楚知道想要下載的spec編號)http://www.3gpp.org/ftp/Specs/archive/
★ 3GPP規格的4G: LTE (Long Term Evolution)/E-UTRA (Evolved Universal Terrestrial Radio Access): 請見3GPP Release 8的36系列
★ Layer 3 UE Engineer新手入門區
24.008 | Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 |
Must Have |
NAS重要spec。這是我最常用到的spec之一,對我而言也是最入門的一份。大多數spec是用來查的,但是這份從第四章開始是可以一頁頁讀過的。它定義了Mobility Management(MM/GMM)、Call Control(CC)、Session Management(SM)的程序還有OTA Message封包內容(照spec本身的用字:定義radio interface procedures)。另外,要找MM/SM的Timer,要找error cause (CC/GPRS SM)也都是這份。 | ||
25.331 | Radio Resource Control (RRC); Protocol specification |
Must Have |
AS重要spec。份量很驚人的一份常用spec。比較難逐頁讀起,因為有很多程序性的東西。通常是用想的,把程序背後的邏輯想懂,不然就是多查幾次就會記起來。那張很有名的RRC States and State Transitions就定義在這份裡面。另外,所有的System Information Block、RRC程序、Handover程序、RAB程序、PAGING TYPE 1和PAGING TYPE 2的格式與定義、Active set, Monitored set, Detected set的定義、還有那些幾a幾b幾c幾d..的measurements全都在這邊。讀完24.008和25.331算是可以解決掉7成以上的OTA message,剩下的,它們會幫忙refer來refer去。RRC protocol Timer要查這份,別跟24.008裡同名timer搞混了。3GPP的UMTS Fast Dormancy要refer這份的R8.5.0以上版本(a new UE "Signalling Connection Release Indication Cause" in SIGNALLING CONNECTION RELEASE INDICATION) [LTE:36.331] |
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23.060 | General Packet Radio Service (GPRS); Service description;Stage 2 | Must Have |
PS domain的重量級spec。那張有名的GPRS Core Network的架構圖、一堆u-plane、c-plane的堆疊架構圖、UE Operation Mode分成class A, class B, class C(此分類適用於俗稱的2G或GSM... 也就是spec用詞A/Gb mode... 詳見22.060)或PS/CS mode(此分類僅適用俗稱3G或WCDMA... 也就是spec用詞Iu mode)、Packet Data Protocol States、兩個domain的Paging Co-ordination通通都在這邊。PDP Context Preservation在第9章。 | ||
27.007 | AT command set for User Equipment (UE) | Must Have |
AT command的兩份spec之一,收錄和SMS沒有直接關係的部份。還是新人的時候,我幾乎是每天抱著這份spec一邊啃一邊試的。離開新人時代,這份的查詢度也還經常居高不下。+CNUM, +CIMI, +CREG, +CGREG, +CLCC, +CGACT, +CLCK, +CLIP, +CGDCONT, +CGATT, +CFCC, +COPS, +CRSM等等等都在這份囉。雖然這份也有一語帶到+ES,但是它是躲在要coco的ITU-T V.250裡。 | ||
25.401 | UTRAN overall description | Must Have |
這不算一份常用spec,但是這是一份3GPP新鮮人該翻翻的spec。5.1開宗明義畫清楚core network、UTRAN和UE間的關係,接著畫分User Plane和Control Plane的概念,再來,有一張UTRAN Architecture,讓人看清楚Iu、Iur、Iub三種Interface到底在誰和誰中間,還有RNS、RNC、Node B和cells間的關係。透過這張圖也可以簡單地了解為甚麼會有serving RNS、drift RNS的概念,這樣,s-RNTI、d-RNTI、c-RNTI、u-RNTI這些名詞不用背也可以記得清楚囉。 | ||
24.007 | Mobile radio interface signalling layer 3; General aspects |
Must Have |
它有一張很經典的Protocol architecture of Non Access Stratum (CS/PS MS side)的架構圖,可以讓我們一眼看清RR, (G)MM, CM(CC/SM/SS/SMS)的關係。 | ||
25.301 | Radio Interface Protocol Architecture | Must Have |
頁數算很少,但是算非常架構性的一份大spec,要知道L1、L2、L3倒底差在哪、Transport Channel和Logical Channel怎麼分(5.2)、還有各層間的channel到底怎樣mapping,都在這份。這應該也是比較算用來查的spec,對一個新手而言,光是看到一大堆channel卻不了解它們究竟是做什麼的時候,這份spec應該很難看得進去。另外,R6起就同時收有分別屬HSDPA/HSUPA的HS-DSCH/E-DCH definition,這份就不重複列在下面的HS spec專區了。 | ||
27.005 | Equipment (DTE - DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS) | Must Have |
兩大AT command spec之一,這份從名字可以知道是和SMS還有CBS有關的。較常用的標的有+CMT (MT SMS)、+CMGS (MO SMS)、CMGR (SMS read from USIM/memory)、+CMGW (SMS write to USIM/memory)、+CSCA (Service Centre Address). 對3GPP入門者而言,比較經典的是Figure 1: Reference configuration, 這張圖畫出短訊服務中UE/USIM/ME/TE/MT架構,如果分不清楚SMS Class 1和Class 3差在哪,可以先看看這張圖。 |
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23.040 | Technical realization of the Short Message Service (SMS) | Must Have |
顧名思義就是SMS,要看懂CP Data就找它囉,做USIM的OTA download也會用到。另外,做到NITZ的話會refer到定義time/timezone的部份。這份的好朋友是23.038。 SMS Status Report的Status(俗稱delivery report)在9.2.3.15 TP-Status (TP-ST),依性質分為4組。 |
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23.038 | Alphabets and language-specific information | Must Have |
從頁數看很羽量級的spec,但是包含Data Coding Scheme(定義包括SMS的Class bit和Class 0到3)和GSM 7-bit Packing兩個重要的主題。有GSM 7-bit和Extended 7-bit char的對照表;這份做MWI(Message Waiting Indication)也會用到。 | ||
21.905 | Vocabulary for 3GPP Specifications | Must Have |
3GPP專用小辭典? 第一次遇上什麼不懂的名詞,先來找它就對了。 | ||
23.003 | Numbering, addressing and identification | Must Have |
從這份的title很清楚的就可以知道這份文件有什麼,舉凡IMSI、TMSI、P-TMSI、M-TMSI, GUTI, MSISDN、LAI、RAI、CI、CGI、IMEI、IMEISV、TLLI(Temporary Logical Link Identity)等等的構造,還有算IMEI CD需要的Luhn check計算法都在這裡。 | ||
24.011 | Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface |
Good to Have |
對我來講,這份比較常用的時機似乎大多是用來查sms的error cause,CP-Cause還有RP-ERROR都在這裡頭。 | ||
25.101 | User Equipment (UE) radio transmission and reception (FDD) | Good to Have |
☆ Table 5.0是UTRA FDD frequency bands,R6有從Band I到Band VI,R7增加了Band VII、Band VIII、Band IX和Band X,R8更增加到Band XIV,但是各版均加註other frequency bands is not precluded。 ☆ Channel Spacing是5MHz、Channel Raster是200kHz,還有UARFCN怎算也是定義在這份。 |
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25.321 | Medium Access Control (MAC) protocol specification | Good to Have |
Layer 2重要spec. 新鮮人應該要翻一下的部分是第4章Channel structure. 4.3.1列出Transport channel, 而4.3.2定義Logical channel structure, 有Control Channels (BCCH, PCCH, DCCH, CCCH, SHCCH...) 和Traffic Channels (DTCH, CTCH...) 的列表. | ||
26.071 | AMR speech CODEC; General description | It depends |
AMR簡介。有那張有名的哪種rate是和那種spec相容的表。這份比較像pointer,叫讀者refer這邊那邊的。目前live network下還很稀有的AMR-WB (Wideband AMR: source rate 6.60 kbit/s to 23.85 kbit/s)在一個號碼之差的26.171.
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26.103 | Speech codec list for GSM and UMTS | It depends |
有Codec Bitmap。我是從24.008被refer過來的,要從CC/SEPUP裡面查support codec的時候會用到(常用實例是查手機是不是對網路宣稱支援AMR-WB)。而網路對每一通3G voice call指定的codec是看RRC的NAS Synchronisation Indicator(通常找Radio Bearer Setup),但因為這個IE不是MUST,所以網路沒送的話,手機視網路預設UMTS_AMR_2。(see 24.008/5.2.1.11 Speech Codec Selection)
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23.014 | Support of Dual Tone Multi-Frequency (DTMF) signalling | Must Have |
定義3GPP系統對DTMF的支援(Mible to Landline),這份spec主要僅定義signalling層面,MMI不在討論範圍。而DTMF相關封包(START DTMF, START DTMF ACKNOWLEDGE, START DTMF REJECT, STOP DTMF, STOP DTMF ACKNOWLEDGE)定義請見24.008 |
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22.042 | Network Identity and Timezone (NITZ); Service description, Stage 1 | It depends |
NITZ本身就是optional feature,所以這份rating相對給比較低。它有定義NITZ information的傳輸和使用。也有考慮到Local Time Zone (LTZ)、summertime等問題。至於TZ要怎算,請見23.040。Note: time zone要怎算的實例
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25.304 | User Equipment (UE) procedures in idle mode and procedures for cell reselection in connected mode | It depends |
標題很長,簡而言之就是要怎樣選cell。在idle mode的部份,專注於Access Stratum。
對實作而言,這份spec還是有很多曖昧地帶或說空間。
(題外話,每次有PM自以為專業地對著no service的手機喊說"沒有camp到網路",我就會很想請他們來讀讀這份加24.008。首先,和網路發生關係的動詞是attach,再者,no service的手機,不見得是沒有camp到任何一個cell的。)
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23.122 | Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode | It depends |
☆和25.304密不可分的一份spec,這份專門講NAS在idle該怎樣選網路,像是UE在power on的時候是自動或手動分別該如何選。(NAS/AS在idle時的Function要怎分在25.304)Steering of roaming在收到USAT REFRESH command後該怎辦的程序也在這份裡。 ☆這份spec裡也有一些GSM COMPACT的線索。[See also 22.011] 23.122比較detail, 22.011講比較overall的構面。 ☆從R7開始,可以找到EHPLMN(Equivalent HPLMN),同樣地,要在31.102找到EF EHPLMN(6FD9),也要用R7以上的版本。 |
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22.030 | Man-Machine Interface (MMI) of the User Equipment (UE) | It depends |
- 這份如果站在一般手機使用者的角度來講,應該是比較像”密技”的東西。像是IMEI要按*#06#叫出來,要怎樣按call holding,然後要怎樣把被hold住的call叫回來,怎樣按MultiParty、ECT(Explicit Call Transfer),怎樣註冊/啟動Supplementary Service等等…。 - International Access Function ("+" key)和TON(type of number)的關係 |
HSDPA / HSUPA related 3GPP specs HSDPA starts from R5 / HSUPA(EUL) starts from R6 R7 HSDAP+EUL = HSPA (by TR25.999) 營運商or俗稱會講R7 HSDPA/EUL 為HSPA+ |
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25.308 | High Speed Downlink Packet Access (HSDPA); Overall description; Stage 2 | HSDPA |
☆ HSDPA採adaptive modulation (R6有QPSK[M]和16-QAM[O],R7再增64-QAM[O]), hybrid ARQ等技術達高傳輸率、低延遲。HSDPA所定義的新transport channel是HS-DSCH。 ☆ HSDPA New MAC entities [Note] ☆ 第9章可以找到換HS-DSCH cell和Active set update之間的差異和關係。 ☆ 這份文的R6和R7有非常大的差異,R7定義到FDD only的HS-DSCH reception in CELL_FACH,打破先前HSDPA只在CELL_DCH的觀念。 |
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25.309 | FDD enhanced uplink;Overall description;Stage 2 | HSUPA |
☆ 短短的Ch 4 和Ch5看一下可以對HSUPA有最基本的idea。 [my notes] ☆ 在這份文件裡,可以找到: 1) 常常被演講文件稱作HSUPA網路架構圖的"Protocol Architecture of E-DCH" 2) HSUPA是由Node B來控制排程(Node B controlled scheduling) 3) UE應該要如何handle "Serving Grant(SG)" |
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25.321 | Medium Access Control (MAC) protocol specification | HSDPA/HSUPA |
【HSUPA】 ☆ 定義隨著EUL而產生的MAC-es/MAC-e這兩個entity。 ☆ SG-Table (9.2.5.2.1.1) | ||
25.214 | Physical layer procedures (FDD) | HSDPA/HSUPA |
【HSDPA】 ☆ (also refer to 25.211)HSDPA channels and procedures: HS-SCCH(High Speed Physical Downlink Shared Control Channel)、HS-PDSCH(High Speed Physical Downlink Shared Channel)、HS-DSCH (High Speed Downlink Shared Channel)、HS-DPCCH (High Speed Dedicated Physical Control Channel) ☆ CQI(Channel Quality Indicator)的定義和mapping table 【HSUPA】 ☆ 定義隨EUL所增加的E-AGCH、E-HICH、E-RGCH |
[LTE常用spec專區] |
★ 36.300 Evolved Universal Terrestrial Radio Access (E-UTRA)
and Evolved Universal Terrestrial Radio Access Network
(E-UTRAN); Overall description;Stage 2 LTE電波介面通訊協定總論和概說("an overview and overall description of the E-UTRAN radio interface protocol architecture"). 想對LTE E-UTRAN有概觀性的認識應該可以從這份看起, 應該可算LTE入門重要spec。這份也可以找到E-UTRAN整體架構圖、LTE物理層generic frame structure... 另外,想知道LTC RRC Idle mode和connected mode差別,LTE SystemInformationBlock (SIB; System Information Block)的概要、LTE ARQ/HARQ也都可以先查它。 |
★ 36.101 Evolved Universal Terrestrial Radio Access (E-UTRA);
User Equipment (UE) radio transmission and reception 這份文件可以找到LTE的Operating Band和EARFCN (Table 5.7.3) |
★ 24.301 Non-Access-Stratum (NAS) protocol
for Evolved Packet System (EPS) LTE版的24.008. ☆ LTE MM/SM和UMTS最大的差異: "ready-to-use" IP connectivity and an "always-on" experience (see 4.1) ☆ LTE UE Mode of operation定義在這份 [筆記] ☆ LTE網路營運商可決定是否採用ciphering |
★ 36.331 Radio Resource Control (RRC) -- LTE版的25.331 -- 定義LTE RRC states還有LTE和3GPP家族(WCDMA/GSM)的handover/reselection(圖4.2.1-1; 亦可清楚看出UTRAN(WCDMA)和LTE RRC states的不同設計) -- LTE和cdma2000(HRPD)的handover/reselection(圖4.2.1-2) -- 定義LTE SRB0, SRB1與SRB2分別所使用邏輯信道及乘載訊息類別 |
★ 36.302 Evolved Universal Terrestrial Radio Access (E-UTRA);
Services provided by the physical layer 篇幅很少的一份spec, 有LTE物理層各channel的傳輸模型圖. |
★ 23.401 General Packet Radio Service (GPRS) enhancements for
Evolved Universal Terrestrial Radio Access Network
(E-UTRAN) access LTE時代的23.060. EPS MM的state(EMM-DEREGISTERED, EMM-REGISTERED)還有EPS CM的state(ECM-IDLE, ECM-CONNECTED)定義在這一份。而LTE NAS與AS的state(RRC_IDLE, RRC_CONNECTED)對照在36.300 |
★ 23.272 Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2 因為LTE是資料網路,目前營運商仍利用現有WCDMA/CDMA網路提供語音服務。這份spec定義了語音(CS) Fallback和SMS over SGs. [筆記] SMS over SGs不需fallback到CS. 因此,雖然spec規定支援CS fallback的手機也需要支援SMS over SGs, 但反方向並不成立! 支援SMS over SGs的手機不代表一定要支援CS fallback. 可參考本分spec圖4.2-1架構加速釐清概念。 |
★ [3GPP2]3GPP2 X.S0057-0 E-UTRAN - eHRPD Connectivity and Interworking:
Core Network Aspects |
USIM related 3GPP/ETSI specs | |
31.102 | Characteristics of the Universal Subscriber Identity Module (USIM) application |
最常用的部份是第4章,有USIM每個欄位(EF; Elementary File)的名稱格式和內容物,USIM phonebook的EF構造在4.4.2,像是Name, Number1在EFADN(Abbreviated dialling numbers)裡頭、Number2在EFANR (Additional Number)裡、EFADN寫不完的寫到EFEXT1、可儲存60 digits甚至80 digits的Chained EXT1等等等...注意,這份沒有包括DFGSM下面的EF,要找像是EFPLMNsel, EFBCCH之類的,請洽51.011. | |
ETSI 102.221 | Smart Cards; UICC-Terminal interface; Physical and logical characteristics |
1) [31.101/31.102 vs. 102.221比較] 差別是後者較為廣泛,前者針對3G的USIM. 2) 以下這堆command還有SW(status word)都可以從102.221查。除了做USAT會用到,AT command的+CRSM最後也會refer到這邊(+CRSM各command的p1,p2,p3該是什麼)。READ BINARY, UPDATE BINARY, READ RECORD, SELECT, FETCH, TERMINAL PROFILE, ENVELOPE, TERMINAL RESPONSE, GET RESPONSE 3) 這份spec也是市場上所謂micro SIM (uSIM)的spec, 關鍵字"mini UICC" |
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51.011(ETSI TS 151 011) | Specification of the Subscriber Identity Module - Mobile Equipment (SIM-ME) interface |
☆樓上那份找不到的一些SW在這份裡頭。 ☆10.3.7 EF SST (SIM service table) 功能類似於USIM的EF UST,EF SST和USIM的EF UST(USIM Service Table)的Identifier都是6F38,但兩者的bit定義和排列順序都不太一樣。 |
個人用筆記/INDEX區 | |
21.111 | USIM and IC card requirements |
[5.2]
After ten (10) consecutive incorrect entries, the
Unblock PIN shall be blocked ... Unblocking of a blocked PIN shall not be possible. (這整個段落翻成白話是PUK錯10次被鎖,就再也無法改PIN了。而前一段提到user是不能改PUK碼的.) |
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21.902 | Evolution of 3GPP system |
R99, R4, R5, R6的內容差在哪。3GPP的"理念"等等等... | |
22.001 | Principles of circuit telecommunication services supported by a Public Land Mobile Network (PLMN) |
Call waiting tone definitions. (CEPT, ANSI, Japan) See 24.008 and 24.083 for Layer 3 OTA signalling IE. | |
22.011 | Service accessibility |
☆ international roaming, national roaming, roaming in shared networks。
3.2.2.4.1 FPLMN經過Manual Selection成功註冊到網路後,可從EFFPLMN移除。[note] ☆ R7才新增3.2.2.8 Steering Of Roaming |
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22.091/23.091 | Explicit Call Transfer (ECT) |
22.091是stage 1, 定義ECT怎樣打,還有可以什麼時候trasfer 23.091 (stage 3)有解釋SS-error code還有OTA message的procedure. (Note: 但是就是有operator不照遊戲規則玩...) | |
23.040 | Technical realization of the Short Message Service (SMS) |
1) MWI有三個level, 第一個protocol id,第二個Data Coding Scheme,第三個是運用TP-UD (TP-UDH). 2) Figure 9.2.3.24 (GSM 7-bit fill bits)筆記 |
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23.041 | Technical realization of Cell Broadcast Service (CBS) |
[2 General description] 必讀簡介。有一張表定義手機在哪些時機才可以收CB Message [8 MS/UE Functionality] 這章節有張表可以清楚看出 對手機而言,GSM網路和WCDMA(UMTS)網路下的Cell Broadcast差在哪。 [9.4.1.1][9.4.2.1] 分別定義GSM和UMTS分別該用哪個channel傳(CBCH in SDCCH/CTCH)。 [9 Message Format] 應該是CBM內容debug必備章節。 |
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23.060 | General Packet Radio Service (GPRS); Service description;Stage 2 |
NSAPI筆記 | |
23.221 | Architectural requirements |
LTE手機對語音服務支援的類別。LTE手機對網路註冊後,若網路回覆不支援語音服務,手機該如何處理... (詳見7.2a) "Voice centric" or "Data centric" "CS Voice only", "CS Voice preferred, IMS PS Voice as secondary", "IMS PS Voice preferred, CS Voice as secondary", "IMS PS Voice only" |
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24.002 | GSM - UMTS Public Land Mobile Network (PLMN) Access Reference Configuration |
MS(Mobile Station)和UE(User Equipment)的組成圖. GSM的MS相對於3G的UE。 | |
24.080 | supplementary services specification; Formats and coding |
查CC/Facility的operation_code(See4.2);這份查不到的operation code在29.002 Mobile Application Part (MAP) specification | |
25.101 | User Equipment (UE) radio transmission and reception (FDD) |
4.3.1: The power of the UE shall not exceed -30dBm if no acceptable cell can be found | |
25.133 | Requirements for support of radio resource management(FDD) |
[CELL_DCH]inter-frequency和inter-RAT的compressed mode的差別: 25.133/8.1.2.3 FDD inter frequency measurements 25.133/8.1.2.5 GSM measurements |
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25.214 | Physical layer procedures (FDD) |
L1 cell search procedure | |
25.215 | Physical layer - Measurements (FDD) |
Transport Channel BLER (Block Error Rate) | |
25.306 | UE Radio Access capabilities |
FDD HS-DSCH physical layer categories (俗稱HSDPA UE Category) |
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25.423 | UTRAN Iur interface RNSAP signalling |
C-RNTI的定義和可能的值 (see 9.2.1.14) | |
25.433 | UTRAN Iub interface Node B Application Part (NBAP) signalling |
9.2.2.13Dc 可以找到Serving Grant Value可以介於0-38,但是38表示zero grant | |
25.914 | Measurements of radio performances for UMTS terminals in speech mode |
☆ 6.1 Definition of the Total Radiated Power (TRP) ☆ 9.3 TRS(Total Radiated Sensitivity) measurement ☆ 5.1.1. Head phantom |
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25.999 R7 | High Speed Packet Access (HSPA) evolution; Frequency Division Duplex (FDD) |
不是俗稱的HSPA+(俗稱or網路營運商似乎把HSPA+相當於R7)。這份tech report(not tech spec)把R7的HSDPA和EUL(HSUPA)叫做"HSPA", 因此,它所謂的"Evolution"自然就是描繪之後的藍圖了~ | |
26.244 | Transparent end-to-end packet switched streaming service (PSS);3GPP file format (3GP) |
.3gp format |
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29.002 | Mobile Application Part (MAP) specification |
24.080找不到的Operation Code在這裡 另外可以找到SS代碼(SS-Code),它只有列二進位,所以在查SS/Facility; SS/Register裡的parameter的SS種別時,先換成2進位會比較容易search. 還有SS_ERROR_CODE (supplementary service errors / ss error code)也在這份裡。 |
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33.102 | 3G Security; Security architecture |
Authentication and Key Agreement(AKA): see 6.3 | |
36.300 | E-UTRA and E-UTRAN; Overall description; Stage 2 |
★ LTE的suitable cell和accetable cell怎麼定義的? See 36.300/10.1.1.1 Cell selection. 注意,雖然概念類似,但這段不可以直接引用為UTRAN(WCDMA)定義,因為3G cell的location不是用Tracking Area來分的。 ★ LTE和UMTS cell reselection的重大差別: LTE不需要在System Information廣播neighboring cell,LTE的設計概念是UE必須要自己偵測neighbouring cells. (如果是尋找測量inter-frequency n-cell,只需指明carier frequencies.) |
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43.020 | Security related network functions |
GSM手機(MS)均必須支援A5/1和A5/3(KASUMI),禁止實作A5/2. |
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44.018 | Mobile radio interface layer 3 specification; Radio Resource Control (RRC) protocol |
這份像25.331的GSM/EDGE版。 - DTM (Dual Transfer Mode) - GPRS SUSPENSION REQUEST & Suspension Causes |
44.064 | Mobile Station - Serving GPRS Support Node (MS-SGSN) Logical Link Control (LLC) layer specification |
XID negotiation | Others | 3GPP/GSMA等官方網站 |
★ 3GPP如何劃分Stage? [note] ★ 什麼是RCS-e (Rich Communication Suite-enhanced)? [GSMA Project link] |
其他非3GPP文件、連結:
☆ 去哪邊下載DG.11呢? (2010年起改為TS.11)
請到GSM World的Document Library, 找標題是
☆ KSC-5601 Table LINK
☆ 23.040/9.2.3.24.4提到16 bit的Application Port如果範圍介於0到15999是根據IANA的配置。目前link位於:
http://www.iana.org/assignments/port-numbers
☆ RFC 959 File Transfer Protocol: 可以找到Active和Passive Mode的差異。
★速查表
☆ Radio Bearer ID和RLC Mode關係速查表 (整理自25.331/6.3)
☆ 3GPP名詞縮寫速查表(個人用筆記版)
★ Layer 3 Engineer新人FAQ小專欄總整理
☆ 怎樣查手機對網路報的HSDPA/HSUPA category? [Link]
☆ 怎麼看Network Operation Modes (NOM; NMO)? [link]
☆ 在3G和2G的時候,分別該怎麼算Periodic Location Updating MM timer T3212? [link]
☆ 一次可以有幾個RRC connection呢? [link]
☆ 什麼是LTE Redirection? [link]
小貓寫的免費小軟體們:
☆ IMEI檢查碼產生器。LINK
☆ GSM 7bit PDU unpacker。 LINK
☆ Window Mobile 6.1專用CONNMGR CONNECTION STATUS LOG TOOL。Beta Release。LINK
☆ KSC-5601 PDU Parser LINK
☆ Terminal Profile Parser (beta)LINK
後記:
本質上,這篇的內容比較接近"找東西"的心得和紀錄,很多人應該和我有一樣的經驗,可能某天在某份spec看到某些東西,經過了幾個月又需要reference類似的東西,可是發現自己根本想不起來,究竟想找的內容到底躲在哪份spec裡。上data base找,可能一個keyword搜出來動輒數10份spec,當一份份翻著浪費著時間的同時,就開始後悔為甚麼當初沒有筆記下來。