CN1949891A - Adaptive packet data transmission method for EGDE system - Google Patents
Adaptive packet data transmission method for EGDE system Download PDFInfo
- Publication number
- CN1949891A CN1949891A CNA2005101093396A CN200510109339A CN1949891A CN 1949891 A CN1949891 A CN 1949891A CN A2005101093396 A CNA2005101093396 A CN A2005101093396A CN 200510109339 A CN200510109339 A CN 200510109339A CN 1949891 A CN1949891 A CN 1949891A
- Authority
- CN
- China
- Prior art keywords
- control unit
- synchronous
- frame
- packet control
- channel codec
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a self-adaptive packet data transmitting method applied to EGDE system, dividing uplink/downlink states of Abis interfae into three states: initial state, synchronous state and misstep state, where link establishment is initial state, uplink and downlink in the initial state are both misstep flags and send PCU synchronization frame; when the synchronizing flow is completed, the synchronous flag shows synchronous, the link enters the synchronous state and sends PCU data frame; the link can not enter the synchronous state until an correct frame is received, and sends PCU data frame. And it makes data frame transmission between channel coding and decoding unit and packet control unit interface quicker and more convenient, so as to improve data transmission rate and quality.
Description
Technical field
The present invention relates to data transmission technology, specifically, relate to a kind of EDGE of being applicable to (Enhanced Data Rate for GSM Evolution, high speed enhanced data-rates transmission service) CCU (Channel Codec Unit in the system, Channel Codec Unit) method of self-adapting data transmission between unit and PCU (Packet ControlUnit, the packet control unit) unit.
Background technology
GSM (Global System for Mobile communications, global system for mobile communications) has obtained using widely in worldwide as second generation mobile cellular communication system.But along with the development of mobile communication technology and the variation of obligation, people constantly increase the demand of data business.GPRS (GPRS) and Enhanced GPRS (EGPRS) are exactly the system that is used for packet data transmission that realizes on global system for mobile communications GSM network.For in the packet-based data of GSM transmission over networks, need new network element, interface and agreement to handle Packet Service.GPRS (EGPRS is identical with GPRS) finishes the transmitted in packets function by increase a series of functional entity on former GSM network foundation, GPRS has kept the division to wireless subsystem (BSS) and network subsystem (NSS), for network subsystem, GPRS has increased Serving GPRS Support Node (SGSN) and two functional entitys of Gateway GPRS Support Node (GGSN) newly, and for wireless subsystem EDGE and the public cover system of GSM circuit-switched service.That is to say subsystem, in original support circuit-switched, support transmitted in packets at BSS.Logically, in base station sub-system BSS, introduced the protocol processes that packet control unit PCU carries out Packet Service.But in agreement, the interface between CCU and the PCU is regulation not, if but PCU frame format definition bad can have a strong impact on its transmission speed and transmission quality.In addition, the characteristics of GPRS and EGPRS are to have higher code rate, especially EGPRS.GPRS is divided into four kinds of CS1-CS4 by wireless mouthful channel coding method, and EGPRS is divided into nine kinds of MCS1-MCS9 by wireless mouthful channel coding method, and corresponding respectively transmit data rate is as shown in table 1.In the business of EGPRS, the single time slot speed of MCS-9 even reached 59.2Kb/s.
Table 1
| Coded system | Data rate (kb/s) |
| CS-1 | 9.05 |
| CS-2 | 13.4 |
| CS-3 | 15.6 |
| CS-4 | 21.4 |
| MCS-1 | 8.8 |
| MCS-2 | 11.2 |
| MCS-3 | 14.8 |
| MCS-4 | 17.6 |
| MCS-5 | 22.4 |
| MCS-6 | 29.6 |
| MCS-7 | 44.8 |
| MCS-8 | 54.4 |
| MCS-9 | 59.2 |
Therefore, provide a kind of frame of PCU efficiently transmission means very crucial, it will directly influence the speed of transmission, influence the resource allocation of Abis mouth.
Summary of the invention
Technical problem to be solved by this invention provides the method for the adaptive packet data transmission of a kind of EGDE of being applicable to system.Make that the packet control unit data frame transfer between CCU and the PCU interface is more quick and convenient, thereby improve the speed and the quality of its transfer of data.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
A kind of method that is applicable to the adaptive packet data transmission of EGDE system is used for the self-adapting data transmission between Channel Codec Unit and the packet control unit, comprises the steps:
During initial condition, the up-downgoing packet control unit frame all adopts synchronization frame, and the up-downgoing synchronous regime is step-out;
Channel Codec Unit detects downlink grouped control unit frame in real time, if the synchronous regime of downlink grouped control unit frame is correct, then Channel Codec Unit sends the success of upstream packet control unit frame notice packet control unit down-going synchronous, packet control unit changes synchronous regime over to, and sends downlink grouped control unit Frame to Channel Codec Unit; If the synchronous regime of downlink grouped control unit frame is incorrect, then Channel Codec Unit sends the failure of upstream packet control unit frame notice packet control unit down-going synchronous, packet control unit changes desynchronizing state over to, and sends downlink grouped control unit synchronization frame to Channel Codec Unit;
Packet control unit detects upstream packet control unit frame in real time, if the synchronous regime of upstream packet control unit frame is correct, then packet control unit sends the success of downlink grouped control unit frame notification channel codec unit uplink synchronous, Channel Codec Unit changes synchronous regime over to, concurrently serves capable packet control unit Frame and gives packet control unit; If the synchronous regime of upstream packet control unit frame is incorrect, then packet control unit sends the failure of downlink grouped control unit frame notification channel codec unit uplink synchronous, Channel Codec Unit changes desynchronizing state over to, concurrently serves capable packet control unit synchronization frame and gives packet control unit.
Compared with prior art, the invention has the advantages that:
The method of the invention; be the PCU frame synchronization mode different according to the transmission quality Dynamic Selection of Abis mouth; when link establishment, adopt the packet control unit synchronous frame stucture of synchronous protection strictness to guarantee link-quality; after reaching requirement, link-quality uses the more weak packet control unit data frame structure of synchronous protection instead; transmitting user data as much as possible; so both guarantee transmission quality, improved the efficient of Abis time interval resource again.
Technical problem to be solved by this invention, technical scheme main points and beneficial effect will be in conjunction with the embodiments, are further described with reference to accompanying drawing.
Description of drawings
Fig. 1 is the grouped data transmission state transition graph.
Fig. 2 is the process chart of CCU unit to descending PCU frame.
Fig. 3 is the process chart of CCU unit to up PCU frame.
Embodiment
Table 1 has provided the data rate under the various coded systems of GPRS/EGPRS.Because the transmission rate of 1 business time-slot of Abis mouth has only 16kb/s, once can only transmit 320 bits.Also to comprise in this 320 bit the synchronization bit that is used for frame synchronization and with user data of mobile phone interaction or the like.Traditional Abis mouth frame format has adopted " 16 synchronous 0 and 19 synchronous 1 " method of synchronization, and this frame format has very strong synchronizing capacity, but available data bit maximum also can only be 285 bits.If the PCU frame among the EDGE adopts this frame structure, no doubt can guarantee the transmission quality of ABIS mouth.But because the exigent transmission bit rate of some coded system among the EDGE, except CS1, CS2 and MCS1, MCS2 and MCS3, other coded system all needs to adopt the ABIS mouth time slot more than at least two, MCS9 even 5 16kbps time slots of needs.Therefore adopt this method of synchronization, can take a large amount of resource of ABIS mouth.Link between CCU and the PCU is more fixing in addition, can frequently not tear the chain link setup open, there is no need to adopt the frame synchronization of strictness like this.Therefore, core concept of the present invention is: when the link-quality difference, adopt the PCU synchronization frame to carry out strict synchronism.But when link was good, transmission PCU Frame by reducing the efficiency of transmission that synchronization bit improves the ABIS mouth, reduced taking of ABIS mouth resource.
As shown in Figure 1, be the grouped data transmission state transition graph.The present invention is divided into three states---initial state with Abis mouth Uplink/Downlink state, synchronous state and step-out attitude.Be initial state during link establishment, up-downgoing is the step-out sign under this state, sends the PCU synchronization frame.Synchronous mark is for synchronous when synchronous flow process is finished, and link has just entered synchronous state, sends the PCU Frame.Link turns to the step-out attitude when finding bad frame is arranged, and synchronous mark is a step-out, sends the PCU synchronization frame.After having received frame, could enter synchronous state once more, send the PCU Frame.
Introduce the concrete steps of the method for the invention below:
CCU unit and PCU unit are the two ends of Abis link.The CCU unit is responsible for the real-time detection of downlink grouped control unit frame synchronization state and the transmission of control and upstream packet control unit frame.Simultaneously, the PCU unit is responsible for the real-time detection of upstream packet control unit frame synchronization state and the transmission of control and downlink grouped control unit frame.
Step 1: at first, the up-downgoing synchronous regime is step-out when initial state, and up-downgoing PCU frame all adopts synchronization frame.
Step 2: the CCU unit detects descending PCU frame in real time.CCU finds the unit that the synchronous head of descending PCU frame is correct, thinks that then down link is good, enters step 3.Otherwise CCU finds the unit that the synchronous head of descending PCU frame makes mistakes, and thinks that then down link is abominable, enters step 4.
Step 3: CCU notifies the down-going synchronous success of PCU unit in ensuing up PCU frame.The PCU unit receives the frame of sign down-going synchronous success, changes synchronous state immediately over to, and will remain on synchronous state always, sends descending PCU Frame to CCU.
Step 4: CCU notifies the failure of PCU down-going synchronous in ensuing up PCU frame.The PCU unit receives the frame of sign down-going synchronous failure, changes the step-out attitude immediately over to, begins to send descending PCU synchronization frame to CCU.
When the CCU unit detected descending PCU frame in real time, the PCU unit also detected up PCU frame in real time.The operation of PCU unit may further comprise the steps:
Step 1:PCU finds the unit that the synchronous head of up PCU frame is correct, thinks that then up link is good, enters step 2.Otherwise PCU finds the unit that the synchronous head of up PCU frame makes mistakes, and thinks that then up link is abominable, enters step 3.
The success of CCU uplink synchronous is notified in step 2:PCU unit in ensuing descending PCU frame.The CCU unit receives the frame of sign uplink synchronous success, changes synchronous state immediately over to, and will remain on synchronous state always, sends up PCU Frame to the PCU unit.
Step 3:PCU notifies the failure of CCU uplink synchronous in ensuing descending PCU frame.The CCU unit receives the frame of sign uplink synchronous failure, changes the step-out attitude immediately over to, begins to send up PCU synchronization frame to PCU.
Below, we are to two kinds of PCU frame formats---and PCU synchronization frame and PCU Frame are set forth in more detail.
First kind of PCU frame, promptly the PCU synchronization frame comprises up-downgoing PCU synchronization frame, synchronous head is formed by 16 synchronous 0 and 19 synchronous 1, has stronger synchronizing capacity, can guarantee transmission quality, carries out when being used for initial state and step-out attitude synchronously; Second kind of PCU frame, promptly the PCU Frame comprises up-downgoing PCU Frame, synchronous head is formed by 5 synchronous 0, has the more information bit, can guarantee transmission speed, and reduces Abis mouth resource, transfer of data when being used for synchronous state.These two kinds of PCU frames all keep a control bit as synchronous mark: this control bit of descending PCU frame is represented uplink synchronous sign Up_Sync, Up_Sync=1 represents that PCU is synchronous with CCU at up direction, and Up_Sync=0 represents that then PCU is in up direction and CCU step-out.
Equally, represent down-going synchronous sign Down_Sync for this control bit of up PCU frame, Down_Sync=1 represents that CCU is synchronous with PCU at down direction, and Down_Sync=0 represents that CCU is in down direction and PCU step-out.
Because the processing procedure basically identical of PCU and CCU, we introduce the processing of CCU in detail here.
Fig. 2 is the descending PCU frame of a CCU process chart.CCU carries out the search of synchronous head (if local Down_Sync is masked as 1 at the Down_Sync sign that carries out at first preserving according to this locality when descending PCU frame is handled, then search for synchronous head according to the frame format of synchronization frame, otherwise, frame format search synchronous head according to Frame), but if do not find synchronous head, CCU thinks that then downlink quality is abominable, and local Down_Sync sign puts 0; Otherwise, thinking that downlink quality is good, local Down_Sync puts 1.And put local Up_Sync sign according to the Up_Sync of descending PCU frame sign.
Fig. 3 is the up PCU frame of a CCU process chart.At first fill in Down_Sync relevant position in the PCU frame control bit according to local Down_Sync.Judge local Up_Sync sign then, local Up_Sync is that 0 expression uplink quality is abominable, fills out PCU bit frame and data bit by the synchronization frame frame format, fills in the back that finishes and sends synchronization frame; Local Up_Sync is that 1 expression up link is good, fills out PCU bit frame and data bit by the Frame frame format, fills in the back that finishes and sends Frame.
In table 2, provided Abis mouth number of time slot shared when the various coded systems of GPRS/EGPRS are used conventional frame format and frame format of the present invention.Clearly, at coded system MCS-6, under MCS-7 and the MCS-9, use the present invention to reduce the waste of Abis time interval resource.
Table 2
| Coded system | The Abis mouth takies timeslot number (not using the present invention) | The Abis mouth takies timeslot number (use the present invention) |
| CS-1 | 1 | 1 |
| CS-2 | 1 | 1 |
| CS-3 | 2 | 2 |
| CS-4 | 2 | 2 |
| MCS-1 | 1 | 1 |
| MCS-2 | 1 | 1 |
| MCS-3 | 2 | 2 |
| MCS-4 | 2 | 2 |
| MCS-5 | 2 | 2 |
| MCS-6 | 3 | 2 |
| MCS-7 | 4 | 3 |
| MCS-8 | 4 | 4 |
| MCS-9 | 5 | 4 |
A kind of method that is applicable to the adaptive packet data transmission of EGDE system of the present invention, be not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.
Claims (9)
1, a kind of method that is applicable to the adaptive packet data transmission of high speed enhanced data-rates transmission service system is used for the self-adapting data transmission between Channel Codec Unit and the packet control unit, it is characterized in that comprising the steps:
During initial condition, the up-downgoing packet control unit frame all adopts synchronization frame, and the up-downgoing synchronous regime is step-out;
Channel Codec Unit detects downlink grouped control unit frame in real time, if the synchronous regime of downlink grouped control unit frame is correct, then Channel Codec Unit sends the success of upstream packet control unit frame notice packet control unit down-going synchronous, packet control unit changes synchronous regime over to, and sends downlink grouped control unit Frame to Channel Codec Unit; If the synchronous regime of downlink grouped control unit frame is incorrect, then Channel Codec Unit sends the failure of upstream packet control unit frame notice packet control unit down-going synchronous, packet control unit changes desynchronizing state over to, and sends downlink grouped control unit synchronization frame to Channel Codec Unit;
Packet control unit detects upstream packet control unit frame in real time, if the synchronous regime of upstream packet control unit frame is correct, then packet control unit sends the success of downlink grouped control unit frame notification channel codec unit uplink synchronous, Channel Codec Unit changes synchronous regime over to, concurrently serves capable packet control unit Frame and gives packet control unit; If the synchronous regime of upstream packet control unit frame is incorrect, then packet control unit sends the failure of downlink grouped control unit frame notification channel codec unit uplink synchronous, Channel Codec Unit changes desynchronizing state over to, concurrently serves capable packet control unit synchronization frame and gives packet control unit.
2, method according to claim 1, it is characterized in that: described Channel Codec Unit detects downlink grouped control unit frame in real time, judges whether the synchronous regime of downlink grouped control unit frame correctly is to judge by the synchronous head in the downlink grouped control unit frame.
3, method according to claim 1, it is characterized in that: described packet control unit detects upstream packet control unit frame in real time, judges whether the synchronous regime of upstream packet control unit frame correctly is to judge by the synchronous head in the upstream packet control unit frame.
4, method according to claim 1 is characterized in that: the synchronous head in the downlink grouped control unit Frame that described packet control unit sends is formed by 5 synchronous 0.
5, method according to claim 1 is characterized in that: the synchronous head in the downlink grouped control unit synchronization frame that described packet control unit sends is formed by 16 synchronous 0 and 19 synchronous 1.
6, method according to claim 1 is characterized in that: described downlink grouped control unit Frame and downlink grouped control unit synchronization frame respectively comprise the synchronous mark of a control bit.
7, method according to claim 6, it is characterized in that: described synchronous mark is Up_Sync, Up_Sync=1 represents that packet control unit is synchronous with Channel Codec Unit at up direction, and Up_Sync=0 represents that then packet control unit is in up direction and Channel Codec Unit step-out.
8, method according to claim 1 is characterized in that: described upstream packet control unit Frame and upstream packet control unit synchronization frame respectively comprise the synchronous mark of a control bit.
9, method according to claim 8, it is characterized in that: described synchronous mark is Down_Sync, Down_Sync=1 represents that Channel Codec Unit is synchronous with packet control unit at down direction, and Down_Sync=0 represents that Channel Codec Unit is in down direction and packet control unit step-out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101093396A CN100433852C (en) | 2005-10-13 | 2005-10-13 | Adaptive packet data transmission method for EGDE system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101093396A CN100433852C (en) | 2005-10-13 | 2005-10-13 | Adaptive packet data transmission method for EGDE system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949891A true CN1949891A (en) | 2007-04-18 |
| CN100433852C CN100433852C (en) | 2008-11-12 |
Family
ID=38019239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101093396A Expired - Fee Related CN100433852C (en) | 2005-10-13 | 2005-10-13 | Adaptive packet data transmission method for EGDE system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100433852C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009067876A1 (en) * | 2007-11-27 | 2009-06-04 | Da Tang Mobile Communications Equipment Co., Ltd. | Synchronization method and synchronization apparatus of communication system |
| CN101472284B (en) * | 2007-12-24 | 2011-01-05 | 中兴通讯股份有限公司 | Complete machine automatic test equipment and method of global mobile communication system base station |
| CN101141183B (en) * | 2007-04-28 | 2011-01-19 | 中兴通讯股份有限公司 | Synchronizing or desynchronizing state reporting method of physical layer downlink |
| CN101351024B (en) * | 2007-07-18 | 2012-05-30 | 联芯科技有限公司 | Method for identifying downlink synchronization lose, apparatus and user terminal |
| CN101953201B (en) * | 2007-12-14 | 2015-06-24 | 辉达技术英国有限公司 | Physical channel establishment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205157B1 (en) * | 1996-11-01 | 2001-03-20 | Telefonaktiebolaget L M Ericsson (Publ) | Method for propagation delay control |
| DE19749665A1 (en) * | 1997-11-10 | 1999-05-12 | Siemens Ag | Data transmission method for mobile communications system radio interface |
| CN1142665C (en) * | 2000-01-03 | 2004-03-17 | 华为技术有限公司 | Method for synchronizing channel coding blocks |
| CN100426876C (en) * | 2001-12-11 | 2008-10-15 | 中兴通讯股份有限公司 | Timed synchronizing method in general block radio business |
-
2005
- 2005-10-13 CN CNB2005101093396A patent/CN100433852C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141183B (en) * | 2007-04-28 | 2011-01-19 | 中兴通讯股份有限公司 | Synchronizing or desynchronizing state reporting method of physical layer downlink |
| CN101351024B (en) * | 2007-07-18 | 2012-05-30 | 联芯科技有限公司 | Method for identifying downlink synchronization lose, apparatus and user terminal |
| WO2009067876A1 (en) * | 2007-11-27 | 2009-06-04 | Da Tang Mobile Communications Equipment Co., Ltd. | Synchronization method and synchronization apparatus of communication system |
| CN101448313B (en) * | 2007-11-27 | 2011-04-13 | 大唐移动通信设备有限公司 | Method and device for synchronizing communication system |
| US8379566B2 (en) | 2007-11-27 | 2013-02-19 | China Academy Of Telecommunications Technology | Synchronization method and synchronization apparatus of communication system |
| CN101953201B (en) * | 2007-12-14 | 2015-06-24 | 辉达技术英国有限公司 | Physical channel establishment |
| CN101472284B (en) * | 2007-12-24 | 2011-01-05 | 中兴通讯股份有限公司 | Complete machine automatic test equipment and method of global mobile communication system base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100433852C (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101646239B (en) | Semi-persistent scheduling method | |
| CN101047426A (en) | Distribution method of uplink block data channel and data transmitting method | |
| CN1677913A (en) | Method of stall identification and recovery | |
| CN1905428A (en) | Transmission method of TDD mobile communication system with low delay character | |
| CN101043265A (en) | Method for realizing multimedia broadcasting and multicasting service data synchronized transmission | |
| CN100433852C (en) | Adaptive packet data transmission method for EGDE system | |
| CN1682481A (en) | Broadcast message segmentation for wireless communication systems | |
| CN101047951A (en) | Media access control station transport method in radio communication system | |
| CN1166084C (en) | Method for propagation delay control | |
| CN1367958A (en) | Handset time synchronisation to wireless telephone base station | |
| CN101064538A (en) | Power control method for time-division synchronous CDMA communication system | |
| CN101557581A (en) | Method for acquiring cache state report, device and equipment thereof | |
| CN101610097B (en) | Blind detection receiving/sending method and blind detection receiving/sending equipment in time division-synchronous code division multiple access system | |
| CN1700617A (en) | Communication device for wireless data transmission | |
| CN1135866C (en) | Method and system for desynchronizing overhead messages in a radiocommunication system | |
| CN101137202B (en) | Distributing uplink resource method, device transmitting/receiving device and communication system | |
| CN100596098C (en) | Quick process method for radio block and its process system | |
| CN101056293A (en) | A half-blind channel estimating method of orthogonal frequency division multiplexing system | |
| CN1190980C (en) | Channel distribution method for multiple services at base station in GPS system | |
| CN1302672C (en) | A parameter configuring method | |
| CN101990314B (en) | Packet control unit frame processing method, transmission method and system | |
| CN101179512B (en) | Resource scheduling method and equipment | |
| CN1277423C (en) | Up synchronous method after realizing hard switch in time division duplex system | |
| CN1173585C (en) | Universal grouped radio service data frame signal transmitting method | |
| CN101237296B (en) | Coding method and device based on compression transmission interval |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20070418 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Adaptive packet data transmission method for EGDE system Granted publication date: 20081112 License type: Common License Record date: 20151123 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20171013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |