CN104902587A - RRC connection establishment method in satellite communication system - Google Patents
RRC connection establishment method in satellite communication system Download PDFInfo
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- CN104902587A CN104902587A CN201510258186.5A CN201510258186A CN104902587A CN 104902587 A CN104902587 A CN 104902587A CN 201510258186 A CN201510258186 A CN 201510258186A CN 104902587 A CN104902587 A CN 104902587A
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- rrc connection
- message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention provides an RRC connection establishment method in a satellite communication system. IMMEDIATE ASSIGNMENT signaling information containing a channel assignment related information unit is added on the basis of RRC connection establishment procedures of original protocol according to the GMR-13G protocol standard. The signaling information is sent to an MES via a gateway station subsystem (GSS). After receiving the RRC CONNECTION REQUEST information of the MES, the GSS will replies the IMMEDIATE ASSIGNMENT information, and then replies the RRC CONNECTION SETUP information.
Description
One, technical field
The present invention relates to mobile satellite communication protocol stack, radio resource management techniques field.
Two, background technology
Under mobile terminal (MES) is in idle pulley, when signaling connection is set up in Non-Access Stratum (NAS) request of MES, MES will initiate RRC connection establishment process.Each MES only has at most a RRC to connect.
When gateway station controller (GSC) receives the RRC CONNECTION REQUEST message of MES, determined accept or refuse this RRC connection establishment request according to specific algorithm by its radio resource management module (RRM).
Based on the first generation mobile satellite communication system of GMR-1 serial protocols standard, RR layer is assigned two kinds of forms, i.e. early assignment (early ass ignment) and and early assignment (very early assignment) to Radio Resource.Early assignment, namely first network assigns SDCCH (if MES supports) or DTCH by assigning (immediate assignment) message immediately to MES, in order to signaling message transmission, thus complete RR connection establishment (RR connection establishment), then again assign DTCH to MES, in order to transport service by Assignment Command (ASSIGNMENT COMMAND).And early assignment, namely network directly assigns DTCH by assigning (immediate assignment) message immediately to MES, complete RR connection establishment (RR connection establishment), the allocated channel no longer again when transport service, and continue to use this channel, just by Channel Mode Modify (CHNNEL MODE MODIFY) message modification channelling mode.Be not difficult to find, divide the utilization rate of pairing Radio Resource not high early.
Based on GMR-1 3G serial protocols standard, rrc layer takes the mode of secondary distribution to Radio Resource.Namely first network is set up RRC with MES be connected by RRC connection establishment (RRC CONNECTION SETUP) message, in the channel signaling of this message arrangement, then set up by radio bearer the channel that (RADIO BEARER SETUP) message sets up business transmission.
But the RRC CONNECTION SETUP message in GMR-1 3G serial protocols standard does not comprise the necessary time and frequency parameter of allocated channel, if the Time-Frequency Information unit relevant to channel assignment is added RRC CONNECTION SETUP message, so the length of this message has just exceeded the bearing capacity of AGCH channel.Based on this, the present invention proposes a kind of RRC connection establishment method and solves this problem.Namely GSC is after receiving the RRC CONNECTION REQUEST message of MES, first sends assignment message immediately to MES and, to set up Signaling Radio Bearer (SRB), on this SRB, then sends RRC CONNECTION SETUP message connect to set up RRC.
Chinese patent: CN102065546B RRC connection establishment method and device, in order to improve the success rate of RRC connection establishment.A kind of RRC connection establishment method provided by the invention comprises: the RRC connection request RRC Connection Request message that network side to receive user equipment UE sends; The RRC connection establishment success rate that network side is corresponding according to each dedicated channel DCH resource current, is defined as the DCH resource that UE distributes; Network side sends RRC connection establishment RRC Connection Setup message to UE, wherein carries the indication information of the dedicated channel DCH resource of distributing for this UE.
Chinese patent: CN101483898B the invention discloses a kind of method and the device of accelerating radio resource control RRC connection establishment, and the method comprises: receive the up RRC information that UE sends; When base station, place, Target cell does not exist the context of this UE, send the message of the Stochastic accessing relevant parameter carried needed for RRC foundation to this UE, described UE initiates RRC Establishing process according to the relevant parameter of described Stochastic accessing, RRC connection setup time can be made to greatly reduce, but also can carry out equilibrium to network load, and the changing method flow process of UE between the system of different systems, device provided by the invention, comprises receiving element, transmitting element, detecting unit, is redirected unit.According to the present invention, the time that RRC sets up can be effectively reduced, decrease the time of service disconnection, effectively raise the susceptibility of user, and the effective balanced load condition of network, network can be run more steadily.
The processing method of Chinese patent: a CN101583170B RRC connection establishment process small area gravity treatment and device, comprise when user terminal and UTRAN carry out, in RRC connection establishment process, cell reselection occurs, in the Access Layer notice Non-Access Stratum RRC connection establishment process of user terminal, cell reselection occurs; This connection establishment request of Non-Access Stratum buffer memory, and whether detection in real time receives the cell information that described Access Layer reports, and after receiving the cell information reported, judge whether mobile management MM connection management process and MM special process clash, if clash, then initiate MM special process, and after special process terminates, again initiate the connection establishment request of buffer memory or wait for that network side makes a call again.Method provided by the invention, solves in prior art the cell reselection existed in RRC connection establishment process and causes MM connection management process and MM special process to clash, and then cause the problem of call failure.
Prior art, just about the introduction of land universal mobile telecommunications system RRC connection establishment correlation technique, does not have illustrating for mobile satellite communication system RRC connection establishment correlation technique.And prior art is also is mostly about improving the success rate of RRC connection establishment and accelerating RRC connection establishment.And RRC connection establishment method in the satellite communication system that the present invention proposes, the satellite communication system mainly solved based on GMR-1 3G consensus standard comprises the problem of the RRC Connection Setup message of channel assignment information unit because AGCH channel cannot carry, thus solve the problem normally cannot setting up RRC connection completely based on GMR-1 3G consensus standard, and then be successfully completed RRC connection establishment process.
List of references:
ETSI TS 101 376-4-13 V3.3.1(2012-12):GEO-Mobile Radio Interface Specifications (Release 3)；Third Generation Satellite Packet Radio Service；Part 4:Radio interface protocol specifications；Sub-part 13:Radio Resource Control(RRC)protocol；Iu Mode；GMR-1 3G44.118
ETSI TS 101 376-4-8 V3.3.1(2012-12):GEO-Mobile Radio Interface Specifications(Release 3)；Third Generation Satellite Packet Radio Service；Part 4:Radio interface protocol specifications；Sub-part 8:Mobile Radio Interface Layer 3Specifications；GMR-1 3G 44.008。
Three, summary of the invention
The present invention seeks to, RRC connection establishment method in the satellite communication system of proposition, for illustrating of mobile satellite communication system RRC connection establishment correlation technique; Solve the problem of the RRC Connection Setup message comprising channel assignment information unit based on the satellite communication system of GMR-1 3G consensus standard because AGCH channel cannot carry, thus solve the problem normally cannot setting up RRC connection completely based on GMR-1 3G consensus standard, and then be successfully completed RRC connection establishment process.
Technical scheme of the present invention is, RRC connection establishment method in satellite communication system, according to GMR-1 3G consensus standard, on former agreement RRC connection building process (as Fig. 1) basis, increase the distribution immediately and the IMMEDIATE ASSIGNMENT signaling message that comprise channel assignment Related Information Unit, this message issues MES by gateway station subsystem (GSS) on AGCH.
The RRC that GSS receives MES asks to be after RRCCONNECTION REQUEST message immediately, first replys IMMEDIATE ASSIGNMENT message, then replys RRC CONNECTION SETUP message.
Not containing information units such as assignment necessary Time-Frequency Informations of channel in the RRC CONNECTION SETUP message of former agreement RRC connection building process, therefore to assign a channel and must supplement the information units such as corresponding Time-Frequency Information.If but the information unit supplemented within the message needed for complete assignments channel, then length is beyond the bearing capacity of the AGCH channel based on GMR-1 3G consensus standard.That is, completely according to GMR-1 3G consensus standard, RRC connection establishment process cannot normally complete.So adopt the mode increasing IMMEDIATE ASSIGNMENT message to solve this problem.
The IMMEDIATE ASSIGNMENT message content increased is as shown in table 2.
Beneficial effect of the present invention: the inventive method (motion) can be widely used in the mobile satellite communication system based on GMR-1 3G consensus standard.Solve based on GMR-1 3G consensus standard satellite communication system RRCCONNECTION SETUP message imperfection and supplement improve this message after Problems existing in the RRC connection establishment processes such as AGCH channel cannot carry, and the problem of the RRCConnection Setup message comprising channel assignment information unit cannot be carried due to AGCH channel, solve the problem normally cannot setting up RRC connection completely based on GMR-1 3G consensus standard, and then be successfully completed RRC connection establishment process.
Four, accompanying drawing explanation
Fig. 1 RRC connection building process;
Fig. 2 the present invention newly designs RRC connection building process.
Five, embodiment
MES initiates RRC CONNECTION REQUEST message on RACH, and GSS sends IMMEDIATE ASSIGNMENT message to MES according to information units such as reason for claim on AGCH, in order to set up SRB carrying and allocating channel resource.MES sets up descending SRB and carries and in this carrying, receive RRC CONNECTION SETUP message, then enter RRC-Cell_Shared state or RRC-Cell_Dedicated state according to message instruction, and complete send RRC CONNECTION SETUP COMPLETE message on up SRB.So far, RRC connection establishment completes.
In GMR-1 3G consensus standard, RRC CONNECTION SETUP message structure is as shown in table 1.
Table 1RRC CONNECTION SETUP message structure
As shown in Table 1, not containing information units such as assignment necessary Time-Frequency Informations of channel in this RRC CONNECTION SETUP message, therefore to assign a channel and must supplement the information units such as corresponding Time-Frequency Information.If but the information unit supplemented within the message needed for complete assignments channel, then length is beyond the bearing capacity of the AGCH channel based on GMR-1 3G consensus standard.That is, completely according to GMR-1 3G consensus standard, RRC connection establishment process cannot normally complete.So adopt the mode increasing IMMEDIATE ASSIGNMENT message to solve this problem.The IMMEDIATE ASSIGNMENT message content increased is as shown in table 2.
Table 2IMMEDIATE ASSIGNMENT message structure
In sum, RRC connection establishment method in a kind of mobile satellite communication system that the present invention proposes, and channel assignment Related Information Unit is encapsulated in IMMEDIATE ASSIGNMENT message.Use the method to set up RRC to connect, the satellite communication system based on GMR-1 3G consensus standard can be solved, RRC CONNECTION SETUP message imperfection and supplement improve this message after the problems such as AGCH channel cannot carry, thus guarantee that MES successfully enters the operation of RRC connection establishment, guarantee business is normally carried out.This RRC connection establishment method can be widely used in the mobile satellite communication system based on GMR-1 3G consensus standard.
Claims (2)
1. RRC connection establishment method in satellite communication system, it is characterized in that according to GMR-13G consensus standard, on former agreement RRC connection building process basis, increase the distribution immediately and the IMMEDIATE ASSIGNMENT signaling message that comprise channel assignment Related Information Unit, this message issues MES by gateway station subsystem (GSS) on AGCH;
After the RRC connection request that GSS receives MES and RRCCONNECTION REQUEST message, first reply distribution immediately and IMMEDIATE ASSIGNMENT message, then reply RRC connection request and RRCCONNECTION SETUP message.
2. RRC connection establishment method in satellite communication system according to claim 1, it is characterized in that increase distribution immediately and IMMEDIATE ASSIGNMENT message content as shown in table 2:
IMMEDIATE ASSIGNMENT message structure
。
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| CN201510258186.5A CN104902587B (en) | 2015-05-19 | 2015-05-19 | RRC connection establishment method in satellite communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156631A (en) * | 2016-12-05 | 2018-06-12 | 大唐移动通信设备有限公司 | A kind of method and device of information transmission |
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| CN1937827A (en) * | 2005-09-20 | 2007-03-28 | 展讯通信（上海）有限公司 | Quick calling establishment method for mobile communication system |
| WO2011119680A2 (en) * | 2010-03-23 | 2011-09-29 | Interdigital Patent Holdings, Inc. | Efficient signaling for machine type communication |
| CN102469480A (en) * | 2010-11-10 | 2012-05-23 | 中兴通讯股份有限公司 | Method and system for controlling and managing optimized wireless resource |
| CN103858484A (en) * | 2013-06-14 | 2014-06-11 | 华为技术有限公司 | CSFB achieving method and device for same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1937826A (en) * | 2005-09-20 | 2007-03-28 | 展讯通信（上海）有限公司 | Called end quick calling-receiving method for mobile communication system |
| CN1937827A (en) * | 2005-09-20 | 2007-03-28 | 展讯通信（上海）有限公司 | Quick calling establishment method for mobile communication system |
| WO2011119680A2 (en) * | 2010-03-23 | 2011-09-29 | Interdigital Patent Holdings, Inc. | Efficient signaling for machine type communication |
| CN102469480A (en) * | 2010-11-10 | 2012-05-23 | 中兴通讯股份有限公司 | Method and system for controlling and managing optimized wireless resource |
| CN103858484A (en) * | 2013-06-14 | 2014-06-11 | 华为技术有限公司 | CSFB achieving method and device for same |
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| CN108156631A (en) * | 2016-12-05 | 2018-06-12 | 大唐移动通信设备有限公司 | A kind of method and device of information transmission |
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