CN101203034A - Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique - Google Patents
Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique Download PDFInfo
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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Abstract
The invention discloses a switching method and system for an exchange in groups with a downlink double loading technique or a multi loading transmission technique, and a base station and a mobile station device, and mainly includes: a switching request message for switching over one carrier frequency is sent out to a switched target base station system BSS, when a need of a switch of over one carrier frequency for MS is ascertained by a resource network device where the mobile station MS is positioned; after the switching request message is received by the switched target base station system BSS, wireless resources of corresponding quantity of carrier frequencies are distributed to the current MS, and a replying message is returned to an origin BSS of the MS after the completion of the distribution; after the replying message is received by the origin BSS, a switching order including the distributed wireless resource information is sent out to the current MS; after the switching order is received by the current MS, a data transmission channel is off the carrier frequency of the origin BSS and is switched on over one carrier frequency distributed by the target BSS. The invention has the advantage that simple and reliable switching of PS is realized with the downlink double loading technique or the multi loading transmission technique.
Description
Technical field
The present invention relates to wireless communication technology field, specifically relate to a kind of descending two carry or the overloading transmission technology under changing method, the system of packet switching (PS, Packet Switching), and base station and mobile station equipment.
Background technology
Along with the fast development of GPRS (GPRS, General Packet Radio Service), the user has had new requirement to the real-time of gprs service.For this reason, existing standard has proposed the hand-off process scheme of gprs service, this handoff process as shown in Figure 1, corresponding following steps:
Step 101, under transmitted in packets (Packet transfer) pattern, (the BSS of source base station system, BaseStation System) defining travelling carriage (MS, when Mobile Station) needing to switch, send handoff request message to target BS S, indication has MS need switch to this target BS S.
Step 102, target BS S is that MS sets up the BSS context according to the handoff request message of receiving, distributing radio resource, and setting up and assigning the back by handoff request acknowledgment message notification source BSS.
Step 103, source BSS sends the switching command that comprises wireless parameter to MS after receiving handoff request acknowledgment message.
Step 104 behind the wireless parameter of MS in obtaining the switching command of receiving, is left source BSS, and initiates to insert pulse (Access Burst) at target BS S.
Step 105, target BS S after receiving the access pulse that MS initiates, the Timing Advance that should use with signaling method notice MS.
Step 106, MS carries out transfer of data according to this Timing Advance behind the time of receipt (T of R) lead.
Step 107, target BS S judges current handover success when receiving first correct Radio Link control that MS sends or medium access control (RLC/MAC) piece.
In above-mentioned handoff procedure, also need the support of the equipment of network GPRS service support node (SGSN, ServingGPRS Supporting Node), GGSN (GGSN, Gateway GPRSSupporting Node) and so on.
In present gprs system, MS can only carry out downlink data and receive on a carrier frequency, and bandwidth of operation is 200KHz, the obvious like this transmission rate that limits data.Such as: based on this Data Receiving scheme, at present global system for mobile communications (GSM, Global System for Mobilecommunications) evolution strengthens data rate wireless access network (EGRPS, GSM EDGE RadioAcesss Network) under the system, even be 4 time slots of a carrier frequency distribution, the actual speed rate of these 4 time slots is also less than 200kbps.And along with the development of data services, existing speed can not satisfy user's demand.
In view of the foregoing, how tame communication apparatus manufacturer has proposed a new data transmission scheme, promptly descending dual carrying/multi carrying transmission.As its name suggests, descending dual carrying/multi carrying transmission is exactly to break through the bandwidth constraints that gsm system follows always, makes a MS can carry out downlink data simultaneously on more than one carrier frequency and receives.If being used for the carrier frequency number of downlink data receiving is N, then this transmission plan can make bandwidth of operation become 200 * N KHz, and corresponding message transmission rate also improves pro rata according to the carrier frequency number.Still be example with present EGRPS system, the actual speed rate of 4 time slots of a carrier frequency distribution is 200kbps, if and MS can carry out the downlink data reception simultaneously on 5 carrier frequency, then speed can satisfy the requirement of 3G system to speed fully near 1Mkbps.
By above description as can be seen, introduce descending dual carrying/multi carrying transmission plan, can prolong the applicable time of 2G system greatly, and this scheme only need be upgraded simply on the basis of existing system and just can greatly be improved downlink transmission data rate as GSM.This scheme had both been saved the investment of operator on equipment, can satisfy carrying out of new business again, had wide practical use in the 2G system.
Yet the switching mode in existing packet switching (PS) territory can only be applicable to the switching between the single carrier frequency, can not adapt to introduce descending two carry or the overloading transmission technology after the switching requirement in PS territory.For example,, receive the data conditions on two carrier frequency,, and can not realize that MS is in two handoff procedures under the carrier frequency because prior art only provides the changing method from a carrier frequency to another carrier frequency if MS is in descending two carrying or the overloading transmission state.
Summary of the invention
In view of this, main purpose of the present invention be to provide a kind of descending two carry or the overloading transmission technology under changing method, the system of packet switching, and base station and mobile station equipment, realizes descending two carry or the overloading transmission technology under the PS switching.
Based on above purpose the invention provides a kind of descending two carry or the overloading transmission technology under the changing method of packet switching, comprising:
A. the source network device at mobile station MS place sends the handoff request of carrying out an above carrier frequency switching to the BSS of target BS system that switches when defining the switching of an above carrier frequency of MS needs;
B. after target BS S received described handoff request, the Radio Resource for current MS distributes a respective amount carrier frequency had assigned the back to the source of this MS BSS echo reply message;
C. after source BSS receives response message, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information;
D. after current MS receives switching command, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
Further comprise behind this method step D: current MS sends to target BS S by this above carrier frequency and inserts pulse;
Target BS S receives described access pulse on any carrier frequency that is distributed, determine that then this MS inserts successfully.
If MS inserts target BS S failure among this method step D, then further comprise: data transmission channel is linked into source BSS again.
Source BSS described in this method step D still keeps the Radio Resource of original carrier frequency for this MS after current MS leaves;
If MS inserts target BS S failure, then data transmission channel is linked into again on original carrier frequency of source BSS.
The described current MS of this method further comprises after data transmission channel is linked into source BSS again: the above carrier frequency that current MS passes through to be inserted sends to source BSS and inserts pulse;
Source BSS receives described access pulse on any carrier frequency that is distributed, determine that then this MS inserts successfully.
After the described BSS of this method was current MS distributing radio resource, further the scheduling User Status identified USF on the carrier frequency that distributes;
Current MS monitors USF on the carrier frequency of current access, if listen to USF on any one carrier frequency, then send described access pulse.
The described BSS of this method further comprises after receiving the access pulse that MS sends on the carrier frequency of distributing to this MS arbitrarily: the Timing Advance that notice MS should use;
MS after receiving described Timing Advance, according to this Timing Advance by carrying out transfer of data between the carrier frequency that distributes and the described BSS;
Described BSS judges current handover success when receiving first correct RLC/MAC piece that MS sends.
Comprise in the described handoff request of this method step A and need carry out the indication information that an above carrier frequency switches.
This method MS in whole handoff procedure keeps the transmission state of a descending described above carrier frequency.
Based on above-mentioned purpose the present invention also provide a kind of descending two carry or the overloading transmission technology under the switched system of packet switching, comprising: base station system BSS and mobile station MS,
Described BSS after receiving the handoff request of carrying out an above carrier frequency switching, is the Radio Resource that current MS distributes a respective amount carrier frequency when the target BS S that switches as MS, and is assigning the back to the source of this MS BSS echo reply message;
When the source BSS that switches as MS, after receiving that target BS S is about the response message of carrying out an above carrier frequency switching, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information;
Described MS receive carry out switching command that an above carrier frequency switches after, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
The described BSS of this system is further used for when defining the switching of an above carrier frequency of MS needs when the source BSS that switches as MS, sends to the target BS S of this switching and carries out the handoff request that an above carrier frequency switches;
Based on above-mentioned purpose the present invention also provide a kind of descending two carry or the overloading transmission technology under base station system BSS,
Described BSS after receiving the handoff request of carrying out an above carrier frequency switching, is the Radio Resource that current MS distributes a respective amount carrier frequency when the target BS S that switches as MS, and is assigning the back to the source of this MS BSS echo reply message;
When the source BSS that switches as MS, after receiving that target BS S is about the response message of carrying out an above carrier frequency switching, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information.
At last, based on above-mentioned purpose the present invention also provide a kind of descending two carry or the overloading transmission technology under mobile station MS, described MS is after receiving the switching command that carries out an above carrier frequency switching, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
From above as can be seen, provided by the invention descending two carry or the overloading transmission technology under changing method, the system of packet switching, and base station and mobile station equipment, when source BSS switches to target BS S request, indicate an above carrier frequency to switch, and in handoff procedure, guaranteed the smooth execution that an above carrier frequency switches further, to have guaranteed the higher data transfer rate by keeping the transmission state of a descending above carrier frequency.In addition, MS of the present invention returns the access of source BSS behind target BS S access failure, guaranteed the transfer of data of handoff procedure.
Description of drawings
Fig. 1 is the hand-off process schematic flow sheet of existing gprs service;
Fig. 2 is the hand-off process schematic flow sheet of preferred embodiment of the present invention.
Embodiment
For realize descending two carry or the overloading transmission technology under PS switch, main thought of the present invention comprises: source network device sends the handoff request message that an above carrier frequency switches to the BSS of target BS system that switches when defining MS needs two years or overloading switching; After target BS S received described handoff request message, the Radio Resource for current MS distributes a respective amount carrier frequency had assigned the back to the source of this MS BSS echo reply message; After source BSS receives response message, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information; After current MS receives switching command, data transmission channel is left source BSS be linked on the carrier frequency that target BS S distributed.
Based on this thought, the embodiment of the invention proposed a kind of descending two carry or the overloading transmission technology under the switched system of packet switching, comprise at least: BSS and MS, wherein
Described BSS after receiving the handoff request of carrying out an above carrier frequency switching, is the Radio Resource that current MS distributes a respective amount carrier frequency when the target BS S that switches as MS, and is assigning the back to the source of this MS BSS echo reply message;
And when the source BSS that switches as MS, after receiving that target BS S is about the response message of carrying out an above carrier frequency switching, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information.
Described MS receive carry out switching command that an above carrier frequency switches after, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
In addition, described BSS can also be further used for when defining the switching of an above carrier frequency of MS needs when the source BSS that switches as MS, sends to the target BS S of this switching and carries out the handoff request that an above carrier frequency switches.Certainly, this function also can be realized by SGSN.
Referring to shown in Figure 2, based on said system, the preferred embodiment to PS changing method of the present invention is elaborated below.
The network equipment that relates in the present embodiment flow process comprises: MS, source BSS, target BS S and equipment of the core network, and such as SGSN.Wherein, MS, source BSS and target BS S support descending two carrying or the overloading transmission technology.
Suppose that MS is in the transmission state of a descending n carrier frequency, n 〉=2 receive data simultaneously on this n different carrier frequency.
Step 201, the source BSS at current MS place initiates handoff request when defining MS and need the n carrier frequency to switch, promptly send handoff request message to target BS S, require target BS S to set up related context and distributing radio resource, and the switching of n carrier frequency is carried out in indication in this request for this MS.
Wherein, this process also can be initiated and be carried out such as SGSN by equipment of the core network.
Step 202, after target BS S receives handoff request message, judge that according to the indication information in the message this message is the handoff request of carrying out the n carrier frequency, then sets up the BSS context for this MS, the Radio Resource that distributes n carrier frequency mainly is to distribute n operable carrier wave for MS at down direction; Assigned back target BS S and returned to source BSS, and the scheduling User Status identifies (USF) on the carrier frequency that distributes by handoff request acknowledgment message.
Step 203, source BSS receives the handoff request acknowledgment message that target BS S returns, illustrate that resource allocation finishes, source BSS sends PS switching command (Handover Command) message to current MS, indicate this MS to initiate PS and switch, include n the carrier frequency information that target BS S is distributed in the switching command message.
Step 204 after current MS receives switching command message, is left source BSS with the transmission channel of downlink data and is linked into target BS S on its n of distributing carrier frequency, and monitors USF according to the wireless resource information that switching command is described on n carrier frequency.
At this moment, source BSS can or be always the resource that current MS keeps its original carrier frequency in a period of time.
MS can disconnect the downlink data transmission passage that is connected with source BSS one by one, is linked on the newly assigned carrier frequency again, also can walk abreast and carry out.And MS keeps the transmission state of descending n carrier frequency during handoff procedure, and promptly MS continue to safeguard original Temporary Block Flow (TBF), and this TBF belongs to n carrier frequency TBF, can receive or send the RLC/MAC piece on an above carrier frequency.
Step 205 if current MS receives USF on the new any carrier frequency that switches, is just initiated Access Burst to target BS S.
Step 206, target BS S distribute to receive the Access Burst that this MS sends on any carrier frequency of current MS after, the Timing Advance of notifying this MS to use with signaling method.
Step 207, MS behind the time of receipt (T of R) lead, according to this Timing Advance by carrying out transfer of data between a newly assigned n carrier frequency and the target BS S.
Step 208, target BS S judges current handover success when receiving first correct RLC/MAC piece that current MS sends.
MS is at the access failure of target BS S, such as: in the given time, MS does not receive USF; Perhaps in the given time, target BS S does not receive the Access Burst that MS sends, and target BS S notifies MS.Then MS switches on n the carrier frequency getting back to source BSS again, and detailed process is:
MS is linked into source BSS on n the carrier frequency of its reservation with the transmission channel of downlink data, and monitors USF according to the wireless resource information that switching command is described on n carrier frequency;
Receive USF if current MS keeps on any carrier frequency for it at source BSS, just initiate Access Burst to source BSS;
Source BSS after receiving the Access Burst that this MS sends on any carrier frequency that keeps, the Timing Advance of notifying this MS to use with signaling method;
MS behind the time of receipt (T of R) lead, according to this Timing Advance by carrying out transfer of data between a newly assigned n carrier frequency and the source BSS;
Source BSS judges current handover success when receiving first correct RLC/MAC piece that current MS sends.
Certainly, said process is to be that MS keeps under the prerequisite of original Radio Resource and carries out at source BSS, if source BSS is not for MS keeps original Radio Resource, then source BSS can redistribute Radio Resource for described MS in above-mentioned handoff procedure.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
- One kind descending two carry or the overloading transmission technology under the changing method of packet switching, it is characterized in that, comprising:A. the source network device at mobile station MS place sends the handoff request of carrying out an above carrier frequency switching to the BSS of target BS system that switches when defining the switching of an above carrier frequency of MS needs;B. after target BS S received described handoff request, the Radio Resource for current MS distributes a respective amount carrier frequency had assigned the back to the source of this MS BSS echo reply message;C. after source BSS receives response message, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information;D. after current MS receives switching command, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
- 2. method according to claim 1 is characterized in that, further comprises behind the step D: current MS sends to target BS S by this above carrier frequency and inserts pulse;Target BS S receives described access pulse on any carrier frequency that is distributed, determine that then this MS inserts successfully.
- 3. method according to claim 1 is characterized in that, if MS inserts target BS S failure among the step D, then further comprises: data transmission channel is linked into source BSS again.
- 4. method according to claim 3 is characterized in that, the BSS of source described in the step D still keeps the Radio Resource of original carrier frequency for this MS after current MS leaves;If MS inserts target BS S failure, then data transmission channel is linked into again on original carrier frequency of source BSS.
- 5. method according to claim 3 is characterized in that, described current MS further comprises after data transmission channel is linked into source BSS again: the above carrier frequency that current MS passes through to be inserted sends to source BSS and inserts pulse;Source BSS receives described access pulse on any carrier frequency that is distributed, determine that then this MS inserts successfully.
- 6. according to claim 2 or 5 described methods, it is characterized in that after described BSS was current MS distributing radio resource, further the scheduling User Status identified USF on the carrier frequency that distributes;Current MS monitors USF on the carrier frequency of current access, if listen to USF on any one carrier frequency, then send described access pulse.
- 7. according to claim 2 or 5 described methods, it is characterized in that described BSS further comprises after receiving the access pulse that MS sends on the carrier frequency of distributing to this MS arbitrarily: the Timing Advance that notice MS should use;MS after receiving described Timing Advance, according to this Timing Advance by carrying out transfer of data between the carrier frequency that distributes and the described BSS;Described BSS judges current handover success when receiving first correct RLC/MAC piece that MS sends.
- 8. method according to claim 1 is characterized in that, comprises in the described handoff request of steps A carrying out the indication information that an above carrier frequency switches.
- 9. method according to claim 1 is characterized in that MS keeps the transmission state of a descending described above carrier frequency in whole handoff procedure.
- One kind descending two carry or the overloading transmission technology under the switched system of packet switching, comprising: base station system BSS and mobile station MS, it is characterized in that,Described BSS after receiving the handoff request of carrying out an above carrier frequency switching, is the Radio Resource that current MS distributes a respective amount carrier frequency when the target BS S that switches as MS, and is assigning the back to the source of this MS BSS echo reply message;When the source BSS that switches as MS, after receiving that target BS S is about the response message of carrying out an above carrier frequency switching, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information;Described MS receive carry out switching command that an above carrier frequency switches after, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
- 11. system according to claim 10, it is characterized in that, described BSS is further used for when defining the switching of an above carrier frequency of MS needs when the source BSS that switches as MS, sends to the target BS S of this switching and carries out the handoff request that an above carrier frequency switches;
- 12. one kind descending two carry or the overloading transmission technology under base station system BSS, it is characterized in that,Described BSS after receiving the handoff request of carrying out an above carrier frequency switching, is the Radio Resource that current MS distributes a respective amount carrier frequency when the target BS S that switches as MS, and is assigning the back to the source of this MS BSS echo reply message;When the source BSS that switches as MS, after receiving that target BS S is about the response message of carrying out an above carrier frequency switching, send switching command to current MS, and in switching command, comprise institute's assigned radio resource information.
- 13. one kind descending two carry or the overloading transmission technology under mobile station MS, it is characterized in that, described MS receive carry out switching command that an above carrier frequency switches after, data transmission channel is left the carrier frequency of source BSS, be linked on the above carrier frequency that target BS S distributed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610165694XA CN101203034B (en) | 2006-12-12 | 2006-12-12 | Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique |
| PCT/CN2007/071219 WO2008071125A1 (en) | 2006-12-12 | 2007-12-12 | Packet-switched handover method, system and device for downlink dual carrier or multi-carrier transmission technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610165694XA CN101203034B (en) | 2006-12-12 | 2006-12-12 | Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique |
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| Publication Number | Publication Date |
|---|---|
| CN101203034A true CN101203034A (en) | 2008-06-18 |
| CN101203034B CN101203034B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610165694XA Expired - Fee Related CN101203034B (en) | 2006-12-12 | 2006-12-12 | Method, system and equipment for switching grouping switch in downward dual carrying / multi carrying transmission technique |
Country Status (2)
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| CN (1) | CN101203034B (en) |
| WO (1) | WO2008071125A1 (en) |
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| WO2010094235A1 (en) * | 2009-02-17 | 2010-08-26 | 大唐移动通信设备有限公司 | Method and system for supporting carrier aggregation during handover procedure |
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| WO2011018033A1 (en) * | 2009-08-11 | 2011-02-17 | 中兴通讯股份有限公司 | Method and system for handing over user equipment to carrier aggregation cell |
| CN102026324A (en) * | 2009-09-18 | 2011-04-20 | 大唐移动通信设备有限公司 | Method, equipment and system for reconfiguring aggregated cell |
| WO2011044832A1 (en) * | 2009-10-16 | 2011-04-21 | 华为技术有限公司 | Switching method, device and system |
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| KR100810333B1 (en) * | 2004-06-15 | 2008-03-04 | 삼성전자주식회사 | Apparatus and method for supporting soft handover in a broadband wireless access communication system |
| WO2006081710A1 (en) * | 2005-02-07 | 2006-08-10 | Zte Corporation | Handoff method of mobile terminal |
| CN100493228C (en) * | 2005-03-10 | 2009-05-27 | 大唐移动通信设备有限公司 | Switchover controll method of multiple frequency points system |
| RU2007135923A (en) * | 2005-03-30 | 2009-05-10 | Нокиа Корпорейшн (Fi) | COMBINED SWITCHING OF TRANSMISSION RESOURCES WITH COMMUTATION OF CHANNELS AND WITH COMMUTATION OF PACKAGES |
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- 2006-12-12 CN CN200610165694XA patent/CN101203034B/en not_active Expired - Fee Related
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- 2007-12-12 WO PCT/CN2007/071219 patent/WO2008071125A1/en active Application Filing
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| CN101808374B (en) * | 2009-02-17 | 2012-05-30 | 电信科学技术研究院 | Cell switching method and device in multi-carrier aggregation system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2008071125A1 (en) | 2008-06-19 |
| CN101203034B (en) | 2010-12-08 |
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