WO2016058442A1 - Procédé et dispositif de codage de débit de code de liaison descendante en multidiffusion, et station de base - Google Patents

Procédé et dispositif de codage de débit de code de liaison descendante en multidiffusion, et station de base Download PDF

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Publication number
WO2016058442A1
WO2016058442A1 PCT/CN2015/086650 CN2015086650W WO2016058442A1 WO 2016058442 A1 WO2016058442 A1 WO 2016058442A1 CN 2015086650 W CN2015086650 W CN 2015086650W WO 2016058442 A1 WO2016058442 A1 WO 2016058442A1
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user
multicast bearer
determining
base station
bearer
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PCT/CN2015/086650
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English (en)
Chinese (zh)
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向锐
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中兴通讯股份有限公司
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Publication of WO2016058442A1 publication Critical patent/WO2016058442A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Definitions

  • This application relates to, but is not limited to, the field of mobile communication technology.
  • Cluster communication is a mobile scheduling system that represents the development direction of a dedicated mobile communication network, one of the communication systems.
  • the cluster service provided by the network has the technical features of channel sharing and dynamic allocation, and can provide communication services such as dedicated command and dispatch for group users such as multiple departments and units.
  • cluster communication systems and services based on digital communication technologies have also been widely used.
  • the third generation and even the fourth generation of wireless communication technologies have developed rapidly, and the digital trunking communication system has also proposed various requirements such as broadband, high speed, and smooth evolution.
  • the cluster communication system based on LTE Long Term Evolution was born to meet the demand for broadband and high-speed cluster communication services.
  • the wireless side establishes a downlink multicast shared bearer according to the call attribute, and determines the worst UE wireless according to the UE (User Equipment, User Equipment) and the UE's wireless signal status registered in the cell.
  • the signal condition, and the downlink code rate is determined according to the CQI (Channel Quality Indicator) of the worst UE or other parameters of the feedback UE signal strength, and is transmitted to ensure that all UEs in the cell can be correctly demodulated.
  • the information of the downlink multicast shared bearer since the UE is connected by the RRC (Radio Resource Control), the UE will access the access network according to the change or periodicity of the BLER (Block Error Ratio).
  • the sending status report carries the CQI or other parameter change information that feedbacks the signal strength of the UE, and the access network continues to adjust the downlink code rate according to the current reported value of all UEs.
  • the amount of data carried on the RB (Resource Block) allocated by the base station is determined by the UE capable of demodulating the worst wireless signal under the access network, if most UEs are good at this time. Area, while a certain percentage or only 1 UE is in a poor area, access at this time The network determines the transmission coding rate of the RB according to the signal condition of the one UE; this will cause waste of radio resources.
  • the present invention provides a multicast downlink code rate coding method, apparatus, and base station, which can implement different coding rates and RBs to carry different data information for UEs in the same base station coverage area, thereby saving radio resources.
  • a multicast downlink code rate coding method includes:
  • determining a media packet coding rate of the multicast bearer according to the radio condition of the non-voiced user includes:
  • the media packet encoding rate of the multicast bearer is an edge region multicast bearer encoding rate, when the non-spoken user is in an area outside the predetermined range of the coverage of the base station;
  • the central area multicast bearer coding rate is higher than the edge area multicast bearer coding rate.
  • the high-rank multicast bearer coding rate is higher than the low-rank multicast bearer coding rate.
  • the method further includes:
  • the method further includes: establishing a downlink multicast bearer.
  • the group paging message or the air interface is sent to the non-right user by the downlink multicast bearer to send the group paging message to the non-right user.
  • a multicast downlink code rate coding apparatus includes:
  • the obtaining module is configured to: obtain a wireless condition of a non-right-sense user without a radio resource control bearer in a coverage area of the base station;
  • a determining module configured to: determine a media packet encoding rate of the multicast bearer according to the wireless condition of the non-voiced user.
  • the determining module is configured to:
  • the media packet encoding rate of the multicast bearer is an edge region multicast bearer encoding rate, when the non-spoken user is in an area outside the predetermined range of the coverage of the base station;
  • the central area multicast bearer coding rate is higher than the edge area multicast bearer coding rate.
  • the determining module is set to:
  • the high-rank multicast bearer coding rate is higher than the low-rank multicast bearer coding rate.
  • the device further includes:
  • the communication module is configured to: receive a group paging message of the user of the right to speak;
  • the determining module is configured to: determine whether the group paging is a video call, and when it is a video call, trigger an acquiring module.
  • the device further includes: an establishing module, configured to: establish a downlink multicast bearer.
  • the communication module is configured to: send the group paging message or the air interface to the non-right user to send the group paging message by using the downlink multicast bearer.
  • a base station includes the above downlink code rate encoding device.
  • a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the downlink multicast shared bearer is separately transmitted according to the radio condition of the LTE system.
  • the UE signal is good.
  • the access network sends the downlink multicast shared bearer information at a high code rate, and uses the RB to carry the data information.
  • the radio signal of the UE is poor, and the RB bearer data information is low.
  • the downlink multicast shared bearer information is sent at a low bit rate, and the users in the central area of the cell and the users in the edge area are separately coded and treated separately to save.
  • the purpose of wireless resources is used in the central area.
  • FIG. 1 is a schematic structural diagram of a downlink code rate encoding method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a downlink code rate encoding apparatus according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for coding a line rate according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an access process when a non-spoken user of a cluster group call has no downlink multicast bearer in an edge area target base station according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of an access process when a non-spoken user of a cluster group call has no downlink multicast bearer in a central area target base station according to Embodiment 3 of the present invention
  • FIG. 6 is a diagram showing an access process of a non-spoken user of a cluster group call when a target base station has a downlink multicast bearer according to an embodiment of the present invention
  • FIG. 7 is a process diagram of a cluster group call non-spoken user moving to a base station center at a target base station edge according to Embodiment 5 of the present invention
  • FIG. 8 is a process diagram of a sixth cluster group call non-spoken user moving to a base station edge at a target base station center according to an embodiment of the present invention.
  • the cluster user is divided into a right-to-right user and a non-right-right user.
  • the non-right-sense user refers to the user who is in the active group, receives the group information and the user who sends the message to the user.
  • the right-to-right user refers to the active group and has the right to speak. And send the user to the group with messages such as voice and video text.
  • an embodiment of the present invention provides a downlink code rate coding method, including:
  • Step 11 Obtain a wireless condition of a non-spoken user without a radio resource control bearer in a coverage area of the base station;
  • Step 12 Determine a media packet encoding rate of the multicast bearer according to the wireless condition of the non-voice right user.
  • the determining, according to the wireless condition of the non-voice-right user, the media packet encoding rate of the multicast bearer includes:
  • the media packet encoding rate of the multicast bearer is an edge region multicast bearer encoding rate, when the non-spoken user is in an area outside the predetermined range of the coverage of the base station;
  • the central area multicast bearer coding rate is higher than the edge area multicast bearer coding rate.
  • the high-rank multicast bearer coding rate is higher than the low-rank multicast bearer coding rate.
  • the predetermined range of the coverage center of the base station is set according to actual conditions, and is related to information such as the transmit power of the base station.
  • the method further includes:
  • step 11 It is determined whether the group page is a video call, and when it is a video call, step 11 is performed.
  • the group paging message or the air interface may be sent to the non-right user by the downlink multicast bearer to send the group paging message to the non-right user.
  • the method also includes establishing a downlink multicast bearer.
  • an embodiment of the present invention provides a downlink code rate coding apparatus, including:
  • the obtaining module 21 is configured to: obtain a wireless condition of a non-right-sense user without a radio resource control bearer in a coverage area of the base station;
  • the determining module 22 is configured to: determine a media message encoding rate of the multicast bearer according to the wireless condition of the non-voiced user.
  • the determining module 22 is configured to:
  • the media packet encoding rate of the multicast bearer is an edge region multicast bearer encoding rate, when the non-spoken user is in an area outside the predetermined range of the coverage of the base station;
  • the central area multicast bearer coding rate is higher than the edge area multicast bearer coding rate.
  • the determining module 22 is configured to: determine a CQI value of the channel quality indicator of the non-right user according to the wireless condition of the non-right user.
  • the high-rank multicast bearer coding rate is higher than the low-rank multicast bearer coding rate.
  • the device may also include:
  • the communication module 23 is configured to: receive a group paging message of the right user;
  • the determining module 24 is configured to: determine whether the group page is a video call, and when it is a video call, trigger an acquisition module.
  • the device further includes: an establishing module, configured to: establish a downlink multicast bearer.
  • the communication module 23 may send a group paging message or an air interface to the non-right user to send a group paging message to the non-right user through the downlink multicast bearer.
  • Step 31 After receiving the group paging message sent by the eNB, the non-spoken user equipment UE of the coverage of the base station (eNB) finds that it belongs to its own paging, sends a group call request to the cluster core network, and sends the group core network to the eNB.
  • Step 32 The eNB determines, according to the radio condition of the UE, whether the UE is in a central cell or an edge cell.
  • Step 33 if it is determined that the UE is in the central cell, step 34 is performed; if it is determined that the UE is in the edge cell, step 35 is performed;
  • Step 34 The eNB sends a media message of the multicast bearer to the UE according to the multicast rate of the central area multicast bearer;
  • Step 35 The eNB sends a media message of the multicast bearer to the UE according to the edge region multicast bearer coding rate. The process ends.
  • the central area multicast bearer coding rate is higher than the edge area multicast bearer coding rate.
  • the base station determines, according to the radio condition of the non-spoken user that does not have the RRC bearer, whether the non-spoken user is in the central area or the edge area of the base station, and whether there is a central area non-rightright user according to the coverage of the base station.
  • the non-spoken user in the edge area establishes a downlink central area multicast bearer or a downlink edge area multicast bearer, and the media packet encoding rate of the edge area multicast bearer is lower than the media packet encoding rate of the central area multicast bearer.
  • the coding conversion can be completed by the core network or by the base station, so that the users in the central area of the cell and the users in the edge area are separately coded and treated differently. Achieve the goal of saving wireless resources.
  • the cluster group calls the non-spoken user to have no downlink multicast bearer at the target base station and is an access process of the edge user.
  • Step 101a The cluster core network receives the group call request of the voice right user, and sends a group paging message to the cluster wireless base station.
  • Step 201a the cluster radio base station determines whether the group page is a video call, if not a video call Called, processed according to the normal process, if it is a video call, processed according to the embodiment of the present invention.
  • the base station determines whether the base station has a downlink multicast bearer at this time, and if there is no downlink multicast bearer, directly sends a group paging message to the air interface;
  • Step 202a The cluster terminal receives the group paging message at this time, and returns a paging response.
  • Step 301a The cluster core network receives the paging response, and establishes a group context according to the request of the right user and the base station.
  • the base station sends a group configuration message.
  • Step 302a The base station receives a status report of the non-speaking user UE.
  • the UE is in the edge area, and the base station notifies the core network to establish a context of the low bit rate bearer, and sends the code rate bearer to the UE through the air interface. The UE receives the data at this time.
  • the actual user distribution is closer to the standard normal distribution, which is close to the standard normal according to the Tbs Index of the UE. Distribution calculation.
  • the approximate standard normal distribution is used.
  • the number of RBs used is 23. After the implementation of the RB, the number of RBs is 17 and the number of RB resources saved is 6. The percentage of savings is 26%.
  • the cluster group calls the non-spoken user without the downlink multicast bearer at the target base station and is the access process of the central user.
  • Step 101b The cluster core network receives the group call request of the voice right user, and sends a group call page message to the cluster wireless base station.
  • the cluster radio base station determines whether the group of pages is a video call. If it is a non-video call, it is processed according to a normal process. If it is a video call, it is processed according to an embodiment of the present invention.
  • the base station determines whether the base station has a downlink multicast bearer at this time. In this scenario, there is no downlink multicast bearer, and the group paging message is directly sent to the air interface.
  • Step 202b The cluster terminal receives the group paging message at this time, and returns a paging response.
  • Step 301b The cluster core network receives the paging response, and establishes a group context according to the request of the right user.
  • the base station sends a group configuration message.
  • Step 302b The base station receives a status report of the non-spoken user UE.
  • Step 303b the base station determines whether the location of the UE is in the edge region or the central region by using the CQI in the status report reported by the UE, as defined in this example.
  • the base station determines that the location of the terminal is in the central area at this time, and transmits the group data content according to the central area coding rate.
  • the UE receives the data at this time.
  • the cluster group call non-spoken user has an access procedure of a downlink multicast bearer at the target base station.
  • Step 101c The cluster core network and the base station establish a downlink multicast bearer.
  • Step 201c The cluster base station sends downlink multicast bearer data and group configuration data to the air interface.
  • Step 202c The cluster terminal receives the group paging message at this time, and the group configuration data message, receives the group paging data, and feeds back the status report of the UE.
  • Step 301c The cluster radio base station receives the status report of the cluster terminal, and determines whether the location of the terminal is in the central area or the edge area.
  • Step 302c The base station receives a status report of the non-speaking user UE. It is determined whether the UE is in the central area or the edge area. If it is the central area, the multicast bearer data is directly played according to the current time. If it is an edge area, re-establish a low-rate shared bearer and send the multicast bearer information to the air interface.
  • the cluster group calls the non-voice right user to move to the base station center at the edge of the target base station.
  • Step 101d The non-spoken user UE is at the edge of the base station, and is in the group non-right user of the video group call, and moves to the cell center.
  • the UE periodically reports the status report.
  • the CQI is greater than or equal to 11 as the decision criterion of the central area and the edge area.
  • the base station sends a message to the core network. , request to establish a central user group context;
  • Step 201d After the central user group multicast bearer is established, the base station sends the central user group to the air interface.
  • Step 202d The UE receives a new paging, and demodulates the new central group multicast bearer information.
  • Step 301d The base station updates the edge user information. If there is no edge user of the group, the base station releases the edge downlink multicast bearer.
  • the cluster group calls the non-spoken user to move to the edge of the base station at the target base station center.
  • Step 101e The UE is in the center of the base station, and is in the group non-spoken user of the video group call, and moves to the cell edge.
  • the UE periodically reports the status report.
  • the CQI is greater than or equal to 11 as the decision criterion of the central area and the edge area.
  • the base station sends a message to the core network. , request to establish an edge user group context;
  • Step 201 e After the edge user group multicast bearer is established, the base station sends the edge user group paging to the air interface.
  • Step 202 e The UE receives a new paging, and demodulates the new edge group multicast bearer information.
  • Step 301 The base station updates the central user information. If there is no central user of the group, the base station releases the central downlink multicast bearer.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/function unit in the above embodiment is implemented in the form of a software function module and When sold or used as a stand-alone product, it can be stored on a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the downlink multicast shared bearer is separately transmitted according to the radio condition of the LTE system.
  • the UE signal is good.
  • the access network sends the downlink multicast shared bearer information at a high code rate, and uses the RB to carry the data information.
  • the radio signal of the UE is poor, and the RB bearer data information is low.
  • the downlink multicast shared bearer information is sent at a low bit rate, and the users in the central area of the cell and the users in the edge area are separately coded and treated separately to save. The effect of wireless resources.

Abstract

L'invention concerne un procédé et un dispositif de codage d'un débit de code de liaison descendante en multidiffusion, et une station de base. Le dispositif comprend : un module d'acquisition pour acquérir un état radio d'un utilisateur droit ne parlant pas n'ayant pas de porteuse de commande de ressources radio dans une plage de couverture d'une station de base; et un module de détermination pour déterminer un débit de codage de paquets média d'une porteuse de multidiffusion en fonction de l'état radio de l'utilisateur droit ne parlant pas.
PCT/CN2015/086650 2014-10-17 2015-08-11 Procédé et dispositif de codage de débit de code de liaison descendante en multidiffusion, et station de base WO2016058442A1 (fr)

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CN201410555338.3A CN105577321A (zh) 2014-10-17 2014-10-17 一种组播下行码率编码方法、装置和基站
CN201410555338.3 2014-10-17

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EP3588848B1 (fr) * 2017-03-17 2021-09-01 Huawei Technologies Co., Ltd. Procédé et appareil de traitement de données de réseau

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CN101345904A (zh) * 2007-07-09 2009-01-14 大唐移动通信设备有限公司 分层发送广播业务的方法和装置
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CN102291199A (zh) * 2010-06-18 2011-12-21 电信科学技术研究院 一种上报信道状态信息的方法及装置
US20120182921A1 (en) * 2009-09-11 2012-07-19 Sharp Kabushiki Kaisha Wireless communication system, base station apparatus, mobile station apparatus, and communication method

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Publication number Priority date Publication date Assignee Title
CN101345904A (zh) * 2007-07-09 2009-01-14 大唐移动通信设备有限公司 分层发送广播业务的方法和装置
CN101795178A (zh) * 2009-02-04 2010-08-04 大唐移动通信设备有限公司 待传输数据的预处理方法及装置
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