CN101217780A - A range measuring method in communication system, wireless access system and base station - Google Patents
A range measuring method in communication system, wireless access system and base station Download PDFInfo
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- CN101217780A CN101217780A CNA2007100946846A CN200710094684A CN101217780A CN 101217780 A CN101217780 A CN 101217780A CN A2007100946846 A CNA2007100946846 A CN A2007100946846A CN 200710094684 A CN200710094684 A CN 200710094684A CN 101217780 A CN101217780 A CN 101217780A
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Abstract
The embodiment of the invention relates to the communication field, which provides a distance measurement method, a wireless access system and a base station in a communication system. A priority classification to a CDMA codeword is achieved in advance; wherein, at least one CDMA codeword is appointed as a competitive code with high priority; therefore, when a base station receives the CDMA codeword which is sent by a terminal and discovered as the competitive code, the distance measurement success is indicated, and a physical resource is distributed to the CDMA codeword and indicated to the terminal through a UL-MAP message, thus reducing the access relay of the terminal in the initial Ranging process of network access, improving the execution efficiency of the Ranging process, further shortening the time relay of the whole network access.
Description
Technical field
The present invention relates to the communications field, particularly the method for finding range in the communication system, wireless access system and base station.
Background technology
802.16 agreement is the standard that be used at metropolitan area network provide last kilometer WiMAX access of IEEE Institute of Electrical and Electronics Engineers in promulgation in December calendar year 2001.Meanwhile, numerous suppliers have formed the tissue of WiMAX Forum, and its purpose is to accelerate the deployment based on the broadband wireless network of above-mentioned IEEE802.16 series standard by guaranteeing broadband wireless access compatibility of apparatus and interoperability.Therefore, under normal conditions, the system that uses the realization WiMAX access of stipulating in 802.16 series standards is called the WiMAX system.
Fig. 1 shows the end-to-end reference model of WiMAX.As can be seen, the WiMAX system mainly comprises mobile station MS (Mobile Station)/subscriber station SS (Subscribe Station), access service network ASN (Access Service Network) and connectivity serving network CSN (Connectivity ServiceNetwork).
ASN is defined as the network function set that the WiMAX user terminal provides the wireless access service, and ASN has comprised base station BS (Base Station) and ASN gateway (ASN GateWay is called for short " ASN-GW "), and an ASN can be shared by a plurality of CSN.The major function of ASN comprises the function of base station and the function of ASN-GW.
Wherein, the function of base station has: provide that the base station is connected with the L2 of subscriber station SS/MS, the compression and the encryption of RRM, measurement and the power control and the data of eating dishes without rice or wine.
The function of ASN-GW has: for SS/MS authentication function provides agency (proxy) function; Support the network of NSP to find and selection; For SS provides relaying (Relay) function of L3 information, as IP address assignment.
CSN is defined as the WiMAX user terminal IP is provided Connection Service.CSN mainly provides the IP address assignment of following function: SS/MS, Internet inserts, checking, mandate, charging protocol (Authentication, Authorization, Account, be called for short " AAA ") agency (proxy) or service (server), authorization control based on the user, ASN is to the tunnel of CSN, WiMAX user's charging and the clearing between the operator, tunnel under the roaming condition between the CSN, switching between the ASN and various WiMAX service (as location-based business, multi-medium multi-packet broadcasting and broadcasting service, IP Multimedia System business).MS/SS is (moving) subscriber equipment, and the user uses this devices accessing WiMAX network.Wherein, the R1 interface is a wireless air interface, is mainly defined by IEEE802.16d/e.All the other interfaces are wireline interface.
The flow process of the access network that terminal MS is initiated in the prior art is as follows: MS at first sets up the initial communication relation with BS, described MS searches for the BS in its sub-district, place, and the frequency point information between synchronous described MS and the BS is also obtained the up-downgoing channel information of obtaining the synchronous BS of frequency with it.(Ranging) process of finding range between MS and the BS then, described MS sends distance measurement request (RNG_REQ) message to described BS, described BS receives described RNG REQ message and judges according to its other resources situation whether it can provide its networking resource needed for described MS, the result of described judgement is carried in ranging response (RNG RSP) message, here, terminal and base station can be adjusted through Ranging repeatedly, up to the Ranging success.MS and BS negotiate for basic capability then, BS obtains the information of MS networking resource needed and carries out basic capability negotiating with MS.MS begins to carry out access authentication with BS behind the basic capability negotiating, and authentication begins that Business Stream is set up, the IP address obtains and begins business at last after finishing.
The inventor finds in the practice process to above-mentioned prior art: terminal is carrying out having in the Ranging process repeatedly adjustment with the base station, the branch that does not have priority between each terminal, each terminal is all carried out network insertion according to the above-mentioned same mode based on competition, this is to the high user of some priority or the user that some need promptly be set up under the call case can not guarantee to set up fast to call out, need repeatedly adjust just and can finish call setup, bigger because of Ranging process time delay like this, and then cause the time delay of whole access network bigger.
Summary of the invention
The embodiment of the invention provides method, wireless access system and the base station of range finding (Ranging) in a kind of communication system, is used to improve Ranging efficient, reduces the time delay of Ranging process.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
The method of finding range in a kind of communication system comprises step:
From the CDMA code word, specify at least one CDMA code word as the high contention code of priority in advance; This method specifically comprises:
The base station structure also sends broadcast, and carrying comprises the CDMA code character of described contention code in the described broadcast;
In the ranging process of terminal, if be described contention code from the CDMA code word of described terminal, the ranging success of the indication of then described base station and terminal;
Described base station sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
The embodiment of the invention also provides a kind of wireless access system, and this system comprises base station and terminal,
Described base station specifies at least one CDMA code word as the high contention code of priority in advance from the CDMA code word; Structure also sends broadcast, and carrying comprises the CDMA code character of described contention code in the described broadcast; Carry out ranging process with terminal, if the CDMA code word that described terminal sends at ranging process is described contention code, then the ranging success of indication and terminal sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution;
Described terminal is carried out ranging process with described base station, and the broadcast that the reception base station sends is also selected contention code and sent to described base station from the CDMA code character of described broadcast carrying; After receiving message, receive UL-MAP message from described base station from the indication ranging success of described base station, utilize carry in the described message be the physical resource of described terminal distribution and described base station execution access procedure.
The embodiment of the invention also provides a kind of base station, comprising:
Contention code division unit: be used for marking off at least one CDMA code word as contention code from the CDMA code word;
First module: be used for structure and send broadcast, carrying comprises the CDMA code character of described contention code in the described broadcast;
Unit second: be used for carrying out ranging process with terminal, if the CDMA code word that described terminal sends at ranging process is described contention code, then indication is successful with the Ranging of terminal, sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
In the embodiment of the invention, described base station is carried out priority to described CDMA code word in advance and is divided, specify wherein at least one CDMA code word as the high contention code of priority, like this, after the CDMA code word that terminal sends over is received in the base station if when finding that described CDMA code word is contention code, being preferably it distributes physical resource and indicates to described terminal by described UL-MAP message, reduced the Ranging interaction times between base station and the terminal, thereby reach the time delay of minimizing in the Ranging of access network process, improve the execution efficient of Ranging process, and then shortened the time delay of whole access network.
Description of drawings
Fig. 1 is a WiMAX system construction drawing in the prior art;
The method flow schematic diagram of finding range in the communication system that Fig. 2 provides for the embodiment of the invention;
The base station apparatus figure that Fig. 3 provides for the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and main points clearer, the embodiment of the invention is elaborated below with reference to the accompanying drawing embodiment that develops simultaneously.
As shown in Figure 2, the schematic flow sheet of the method for range finding (Ranging) in the communication system that provides for the embodiment of the invention.Scheme is specific as follows:
Step 201-step 202, terminal and BS synchronously after, resolve the up emission parameter of BS broadcasting, obtain the CDMA code character that sends from described BS, from described CDMA code character, select a CDMA code word arbitrarily and send described CDMA code word to described BS.
After terminal and described BS finished synchronously, described BS can pass through the up emission parameter of UCD information broadcast, and described parameter comprises the CDMA code character.In the embodiment of the invention, in order to distinguish the session of different priorities, from the CDMA code word that existing protocol provides, specify at least one CDMA code word as the higher contention code of priority, when the user of described terminal is advanced level user, or when the current needs of described terminal carry out the high call session of priority, or when the current needs of described terminal carry out urgent call and set up, described terminal is after finishing synchronously with the base station, described BS can broadcast the CDMA code character that comprises described contention code, and then described terminal is selected a contention code arbitrarily and sent to described base station as the CDMA code word from described CDMA code character.Certainly, the embodiment of the invention is applicable to that also other needs to set up fast the scene of calling out.
Preferably, in the embodiment of the invention, can also further just classify again, further reduce the competition conflict described contention code by different priority.
After the CDMA code word of terminal transmission is received in step 203, described base station, broadcasting RNG-RSP (ranging response) message.Comprise the CDMA code word in the described RNG-RSP message, also comprise the state information of Ranging.
In the embodiment of the invention, when if described base station finds that CDMA code word that certain terminal is sent is described contention code, the state information of Ranging in the RNG-RSP message of described broadcasting is designated as success (success), be preferably described terminal distribution physical resource, and can in UL-MAP (ascending resource correspondence table) message that sends, carry CDMA-Allocation-IE (CDMA distributes cell), the effect of described CDMA-Allocation-IE is to indicate the described physical resource of described terminal distribution that is.In the embodiment of the invention, also can be to indicate the described physical resource of described terminal distribution that is by sending other message.
Step 204, terminal receive the RNG-RSP message of described base station broadcast, when being the CDMA code word of described terminal transmission as if the CDMA code word in the RNG-RSP message of finding described broadcasting, judge that described RNG-RSP message is at oneself.
Further, if described terminal finds that the state information of indication Ranging in the described RNG-RSP message is success (success), then described terminal receives the UL-MAP message from described base station, utilizes the physical resource of the CDMA-Allocation-IE indication of carrying in the described UL-MAP message to send RNG-REQ (distance measurement request) message to described base station.
Step 205, described base station are receiving that RNG-REQ message later on just with RNG-RSP in response, has comprised a basic connection identifier (CID) of distributing to described terminal in the current RNG-RSP message.
More than the Ranging process in the accessing terminal to network process of the embodiment of the invention is described, by above-mentioned flow process as can be known, because the embodiment of the invention is in the Ranging process, and unlike prior art terminal send the CDMA code word to the base station after, to carry out repeatedly Ranging between base station and the terminal and adjust.In the embodiment of the invention, in advance described CDMA code word being carried out priority divides, specify wherein at least one CDMA code word as the high contention code of priority, like this, after the CDMA code word that terminal sends over is received in the base station if when finding that described CDMA code word is contention code, be preferably it and distribute physical resource and indicate to described terminal, after described terminal gets access to and is used to send the physical resource of RNG-REQ message, use described physical resource to send RNG-REQ message as early as possible by described UL-MAP message.Like this, it is mutual that base station and terminal need not be carried out repeatedly Ranging, thereby reach the access delay of minimizing terminal in the Initial R anging of access network process, improved the execution efficient of Ranging process, and then shortened the time delay of whole access network.
After the Ranging of the foregoing description process is finished, also can further comprise step 206-step 211: described terminal is further carried out terminal basic capability negotiation process, terminal authentication and key exchange process (here with the base station, can be further whether decide the needs cipher key change according to the basic capability negotiating result), registration process is up to the foundation link of eating dishes without rice or wine, described terminal is finished network insertion.
Further, in order better to guarantee the call session that priority is high or the foundation of emergency call session, in the embodiment of the invention, can in uplink sub-frames, specify specific regions to send call control information as calling out the controlled area, described call control information can be the short codes of calling out, and utilizes the short codes mode can save the resource of up link.Preferably, under the situation of urgent call, can send the cornet of emergency telephone number or urgent call, can send call control information to the base station by described uplink sub-frames like this by described calling controlled area.The described subframe of parsing was obtained described call control information after described uplink sub-frames was received in described base station, for described terminal is set up call link.
In the embodiment of the invention, by further in uplink sub-frames, specifying specific regions to send call control information as calling out the controlled area, the call session that priority is high or the foundation of emergency call session have further been guaranteed, and, adopt the mode of short codes also can further save uplink resource, can just send out call control information to the base station at every frame.
The embodiment of the invention also provides a kind of wireless access system, and this system comprises base station and terminal, wherein:
Described base station specifies at least one CDMA code word as the higher contention code of priority in advance from the CDMA code word that existing protocol provides; Structure also sends broadcast, and carrying comprises the CDMA code character of described contention code in the described broadcast; Carry out the Ranging process with terminal, if the CDMA code word that described terminal sends in the Ranging process is described contention code, then indication is successful with the Ranging of terminal, sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
Described terminal is carried out the Ranging process with described base station, and the broadcast that the reception base station sends is also selected a contention code and sent to described base station from the CDMA code character of described broadcast carrying; After receiving the message from the indication Ranging success of described base station, then receive the UL-MAP message from described base station, utilizing what carry in the described message is that access procedure is carried out in the physical resource of described terminal distribution and described base station.
In the embodiment of the invention, described base station is carried out priority to described CDMA code word in advance and is divided, specify wherein at least one CDMA code word as the high contention code of priority, like this, after the CDMA code word that terminal sends over is received in the base station if when finding that described CDMA code word is contention code, being preferably it distributes physical resource and indicates to described terminal by described UL-MAP message, base station and the mutual number of times of terminal room Ranging have been reduced like this, improved the efficient of Ranging, reduced the time delay of Ranging, further, can reduce the time delay of accessing terminal to network.
Further, in the embodiment of the invention, after the Ranging process is finished, described terminal, also carry out terminal basic capability negotiation process, terminal authentication and key exchange process (here with the base station, can be further whether decide the needs cipher key change according to the basic capability negotiating result), registration process is up to the foundation link of eating dishes without rice or wine, and finishes network insertion.
Further, in order better to guarantee the call session that priority is high or the foundation of emergency call session, in the embodiment of the invention, described terminal can specify specific regions to send call control information as the calling controlled area in uplink sub-frames.Described call control information can be the short codes of calling out, and utilizes the short codes mode can save the resource of up link.Preferably, described terminal also is used under the situation of urgent call, and the call control information of cornet that sends emergency telephone number or urgent call by the calling controlled area in the described uplink sub-frames is to the base station; Described base station receives and resolves described subframe behind the described uplink sub-frames and obtain described call control information, for terminal is set up call link.
In the embodiment of the invention, call control information by carrying terminal in uplink sub-frames, the base station obtains behind the call control information of terminal and sets up call link for terminal by resolving described subframe, further accelerated the speed of accessing terminal to network, reduce access delay, improved the efficient of access network.
The embodiment of the invention also provides a kind of base station accordingly, and referring to Fig. 3, this base station comprises:
Contention code division unit 31: be used for marking off at least one CDMA code word as contention code from the CDMA code word;
First module 32: be used for structure and send broadcast, carrying comprises the CDMA code character of described contention code in the described broadcast;
Second unit 33: be used for carrying out the Ranging process with terminal, if the CDMA code word that described terminal sends in the Ranging process is described contention code, then indication is successful with the Ranging of terminal, sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
In the embodiment of the invention, described base station is carried out priority to described CDMA code word in advance and is divided, specify wherein at least one CDMA code word as the high contention code of priority, like this, after the CDMA code word that terminal sends over is received in the base station if when finding that described CDMA code word is contention code, being preferably it distributes physical resource and indicates to described terminal by described UL-MAP message, base station and the mutual number of times of terminal room Ranging have been reduced like this, improved the efficient of Ranging, reduced the time delay of Ranging, further, reduced the time delay of accessing terminal to network.
Further, described base station also comprises the 3rd unit 34, is used for carrying out network insertion with terminal and consults, and finishes the network insertion of terminal;
Described base station also comprises the 4th unit 35, is used for resolving the call control information that described subframe is obtained terminal after receiving the uplink sub-frames of self terminal, for terminal is set up call link.
In the embodiment of the invention, call control information by carrying terminal in uplink sub-frames, the base station obtains behind the call control information of terminal and sets up call link for terminal by resolving described subframe, further accelerated the speed of accessing terminal to network, reduce access delay, improved the efficient of access network.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. the method for finding range in the communication system is characterized in that, specifies at least one CDMA code word as the high contention code of priority in advance from the CDMA code word; This method specifically comprises:
The base station structure also sends broadcast, and carrying comprises the CDMA code character of described contention code in the described broadcast;
In the ranging process of terminal, if the CDMA code word that receives from described terminal is described contention code, the ranging success of the indication of then described base station and terminal;
Described base station sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
2. the method for finding range in the communication system as claimed in claim 1 is characterized in that, further comprises:
Described base station receives the distance measurement request message that sends from described terminal on described physical resource;
Described base station sends ranging response message to described terminal, carries the basic connection identifier into described terminal distribution in the described ranging response message.
3. the method for finding range in the communication system as claimed in claim 2 is characterized in that, further comprises:
Terminal basic capability negotiation process and registration process are carried out with described terminal in described base station, set up the link of eating dishes without rice or wine.
4. the method for finding range in the communication system as claimed in claim 3 is characterized in that, further comprises:
Described base station receives the uplink sub-frames from described terminal;
Resolve described subframe and obtain the call control information of described terminal, for described terminal is set up call link.
5. the method as finding range in the described arbitrary communication system of claim 1-4 is characterized in that,
Described broadcast is a UCD message, and described base station is by the up emission parameter of described UCD information broadcast, and described up emission parameter carrying comprises the CDMA code character of described contention code.
6. wireless access system, this system comprises base station and terminal, it is characterized in that,
Described base station specifies at least one CDMA code word as the high contention code of priority in advance from the CDMA code word; Structure also sends broadcast, and carrying comprises the CDMA code character of described contention code in the described broadcast; Carry out ranging process with terminal, if the CDMA code word that described terminal sends at ranging process is described contention code, then the ranging success of indication and terminal sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution;
Described terminal is carried out ranging process with described base station, and the broadcast that the reception base station sends is also selected contention code and sent to described base station from the CDMA code character of described broadcast carrying; After receiving message, receive UL-MAP message from described base station from the indication ranging success of described base station, utilize carry in the described message be the physical resource of described terminal distribution and described base station execution access procedure.
7. wireless access system as claimed in claim 6 is characterized in that,
Terminal basic capability negotiation process and registration process are carried out with described terminal in described base station, set up the link of eating dishes without rice or wine.
8. wireless access system as claimed in claim 7 is characterized in that,
Described terminal specifies specific regions as calling out the controlled area in described uplink sub-frames, sends call control information to described base station;
The call control information that described subframe is obtained described terminal is resolved after receiving described uplink sub-frames in described base station, for described terminal is set up call link.
9. a base station is characterized in that, described base station comprises:
Contention code division unit: be used for marking off at least one CDMA code word as contention code from the CDMA code word;
First module: be used for structure and send broadcast, carrying comprises the CDMA code character of described contention code in the described broadcast;
Unit second: be used for carrying out ranging process with terminal, if the CDMA code word that described terminal sends at ranging process is described contention code, then the ranging success of indication and terminal sends UL-MAP message to terminal, and described UL-MAP message is carried the physical resource into terminal distribution.
10. base station as claimed in claim 9 is characterized in that, described base station further comprises:
Unit the 3rd is used for carrying out network insertion with terminal and consults, and finishes the network insertion of terminal;
Unit the 4th is used for resolving the call control information that described subframe is obtained terminal after receiving the uplink sub-frames of self terminal, for terminal is set up call link.
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| CN2007100946846A CN101217780B (en) | 2007-12-27 | 2007-12-27 | A range measuring method in communication system, wireless access system and base station |
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| CN2007100946846A CN101217780B (en) | 2007-12-27 | 2007-12-27 | A range measuring method in communication system, wireless access system and base station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010145527A1 (en) * | 2009-06-30 | 2010-12-23 | 中兴通讯股份有限公司 | Priority-based contention ranging method and apparatus for mobile terminals |
| CN102422693A (en) * | 2009-04-07 | 2012-04-18 | Lg电子株式会社 | Method for network entry in a wireless communication system |
| CN101772160B (en) * | 2009-01-04 | 2013-04-17 | 华为技术有限公司 | Method and system for reporting positioning survey |
| CN103069914A (en) * | 2010-08-19 | 2013-04-24 | 摩托罗拉移动有限责任公司 | Method and apparatus for providing contention-based resource zones in a wireless network |
| CN104080055A (en) * | 2013-03-29 | 2014-10-01 | 普天信息技术研究院有限公司 | Method of implementing cluster service call |
| US8873476B2 (en) | 2009-04-07 | 2014-10-28 | Lg Electronics Inc. | Method for network entry in a wireless communication system |
| CN106134121A (en) * | 2014-03-28 | 2016-11-16 | 交互数字专利控股公司 | There is the half-duplex FDD WTRU of single agitator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100359956C (en) * | 2003-02-09 | 2008-01-02 | 中兴通讯股份有限公司 | Method for implementing synchronization and distance finding in wireless communication system and implementing apparatus thereof |
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| CN101772160B (en) * | 2009-01-04 | 2013-04-17 | 华为技术有限公司 | Method and system for reporting positioning survey |
| US8873476B2 (en) | 2009-04-07 | 2014-10-28 | Lg Electronics Inc. | Method for network entry in a wireless communication system |
| CN102422693A (en) * | 2009-04-07 | 2012-04-18 | Lg电子株式会社 | Method for network entry in a wireless communication system |
| CN102422693B (en) * | 2009-04-07 | 2015-07-22 | Lg电子株式会社 | Method for network entry in a wireless communication system |
| CN101938844A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Priority-based competitive ranging method and device for mobile terminals |
| WO2010145527A1 (en) * | 2009-06-30 | 2010-12-23 | 中兴通讯股份有限公司 | Priority-based contention ranging method and apparatus for mobile terminals |
| CN101938844B (en) * | 2009-06-30 | 2015-01-28 | 中兴通讯股份有限公司 | Priority-based competitive ranging method and device for mobile terminals |
| CN103069914B (en) * | 2010-08-19 | 2016-01-20 | 摩托罗拉移动有限责任公司 | For providing the method and apparatus of the resource area based on competition in the wireless network |
| CN103069914A (en) * | 2010-08-19 | 2013-04-24 | 摩托罗拉移动有限责任公司 | Method and apparatus for providing contention-based resource zones in a wireless network |
| CN104080055A (en) * | 2013-03-29 | 2014-10-01 | 普天信息技术研究院有限公司 | Method of implementing cluster service call |
| CN104080055B (en) * | 2013-03-29 | 2017-10-17 | 普天信息技术研究院有限公司 | The implementation method of group service calling |
| CN106134121A (en) * | 2014-03-28 | 2016-11-16 | 交互数字专利控股公司 | There is the half-duplex FDD WTRU of single agitator |
| US10263758B2 (en) | 2014-03-28 | 2019-04-16 | Interdigital Patent Holdings, Inc. | Half duplex FDD WTRU with single oscillator |
| CN106134121B (en) * | 2014-03-28 | 2019-06-28 | 交互数字专利控股公司 | Half-duplex FDD WTRU with single oscillator |
| US10958409B2 (en) | 2014-03-28 | 2021-03-23 | Interdigital Patent Holdings, Inc. | Half duplex WTRU |
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| CN101217780B (en) | 2011-09-14 |
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