WO2014114240A1 - Procédé et dispositif de surveillance de radiomessagerie d'appels de groupe à ressources partagées - Google Patents

Procédé et dispositif de surveillance de radiomessagerie d'appels de groupe à ressources partagées Download PDF

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Publication number
WO2014114240A1
WO2014114240A1 PCT/CN2014/071147 CN2014071147W WO2014114240A1 WO 2014114240 A1 WO2014114240 A1 WO 2014114240A1 CN 2014071147 W CN2014071147 W CN 2014071147W WO 2014114240 A1 WO2014114240 A1 WO 2014114240A1
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Prior art keywords
paging
message
cluster
parameter
group call
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PCT/CN2014/071147
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English (en)
Chinese (zh)
Inventor
蔡松锦
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中兴通讯股份有限公司
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Publication of WO2014114240A1 publication Critical patent/WO2014114240A1/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
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for intercepting a group call paging.
  • LTE Long Term Evolution
  • Push-to-Talk referred to as
  • the PTT system is a cluster scheduling system based on the LTE system.
  • LTE system calls are point-to-point, while group calls for LTE PTT systems are point-to-multipoint.
  • the LTE PTT terminal does not add or modify the System Information Blocks (SIBs) specified by the LTE protocol, but adds new extended SIBs.
  • SIBs System Information Blocks
  • These newly added SIBs carry LTE PTT cluster related parameters, including cluster paging parameters, random access parameters, cell reselection parameters, scheduling parameters, and trunking group control channel (TGCCH) parameters. Wait.
  • SIBs System Information Blocks
  • the paging frame (Paging Frame, PF for short)/Paging Occasion (PO) of LTE is calculated according to the IMSI of the UE. If the LTE PTT group call is also implemented according to this idea, some When the UE belongs to multiple groups, the PF/PO is calculated according to the formula of LTE. It may happen that a certain UE is to be monitored by multiple PFs/POs, so that the UE may perform physical downlink control due to frequent interception and demodulation.
  • the channel Physical Downlink Control Channel, hereinafter referred to as PDCCH
  • PDCCH Physical Downlink Control Channel
  • the embodiments of the present invention provide a method and a device for intercepting a group call paging, so as to at least solve the related art, the UE may seriously affect the standby time of the UE due to frequent interception and demodulation of the PDCCH. At the same time, it may also be caused by frequent listening to multiple PF/POs, which may result in partial group call paging messages being lost in time.
  • a method for detecting a paging call of a cluster group including: a user equipment (User Equipment, UE for short) receiving a first message from a base station; The time and/or location of the cluster group call paging indicated by the first message listens to the PDCCH.
  • the first message is an extended system information block SIBs message, where the extended SIBs message carries a paging frame PF parameter of a group call page and/or a paging time PO parameter of a group call page.
  • the UE determines a PF parameter and a PO of the single-call paging according to parameters required for the single-call paging.
  • the PF parameter of the group call page, the PO parameter of the group call page, the PF parameter of the single call page, and the single call page The PO parameter is used to periodically detect the PDCCH carrying the Trunking Paging Radio Network Temporary Identifier (TP-RNTI).
  • TP-RNTI Trunking Paging Radio Network Temporary Identifier
  • the method further includes: determining whether the PDCCH carries a trunking paging control channel (TPCCH) indication information; if yes, The UE decodes a transport block (Transport Block, hereinafter referred to as TB) of a Physical Downlink Shared Channel (PDSCH) to obtain a Radio Resource Control (Radio Resource Control) on the TPCCH.
  • TPCCH trunking paging control channel
  • TB transport block
  • PDSCH Physical Downlink Shared Channel
  • RRC Radio Resource Control
  • the method further includes: determining whether the RRC message is a cluster group paging message; if yes, comparing the cluster group paging message Whether the cluster group ID and the cluster group ID pre-stored by the UE are equal; if yes, the trunking radio network temporary identifier (T-RNTI) of the RRC message is obtained, The interaction between the UE and the base station.
  • the method further includes: receiving, by the base station, the
  • the base station sends the cluster paging response message to the cluster core network;
  • the base station and the cluster core network allocate resources to the cluster paging response initiated by the UE to establish a control channel and a traffic channel of the cluster group call, so as to complete the access of the cluster group call.
  • the method is applied to an LTE PTT system.
  • a listening apparatus for paging group paging including: a receiving module, configured to receive a first message from a base station; and a listening module, configured to be in the The time and/or location of the cluster group call paging indicated by a message listens to the PDCCH.
  • the receiving module is further configured to: when the first message is an extended SIBs message, receive the extended SIBs message, where the SIBs message carries a PF parameter of a group call page and/or Or group call PO parameters.
  • the device further includes: a determining module, configured to determine, according to parameters required for the single-call paging, that the extended SIBs message further carries parameters required for single-call paging The PF parameter and the PO parameter of the paging page; the listening module is further configured to: according to the PF parameter of the group call page, the group call The PO parameter of the paging, the PF parameter of the single-call page, and the PO parameter of the single-call page, periodically detect a PDCCH carrying a TP-RNTI.
  • the UE may seriously affect the standby time of the UE due to frequent interception and demodulation of the PDCCH.
  • the embodiment of the present invention adopts the following method: The UE receives the first message from the base station; the UE listens to the PDCCH at the time and/or location of the cluster group call page indicated by the first message.
  • the interception is performed at the time and/or location of the predetermined cluster group call paging, thereby increasing the standby time of the UE, and enhancing the reliability of the group call paging message transmission.
  • FIG. 1 is a flowchart of a method for detecting a paging call of a cluster group according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a listening device for paging group paging according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram 2 of a clustering device paging listening apparatus according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing the steps of paging and paging response according to a preferred embodiment of the present invention
  • FIG. FIG. 6 is a schematic diagram of an uplink channel mapping of a cluster system according to a preferred embodiment of the present invention
  • FIG. 7 is a composition diagram of a cluster paging and response system according to a preferred embodiment of the present invention
  • 8 is a flow diagram of a cluster group call page and response in accordance with a preferred embodiment of the present invention.
  • the embodiment provides a method for detecting a paging call of a cluster group.
  • the process of the method is as shown in FIG. 1 and includes steps S102 to S104: Step S102: The UE receives the first from the base station. a message; Step S104: The UE listens to the PDCCH at the time and/or location of the cluster group call page indicated by the first message.
  • the interception is performed at the time and/or location of the paging of the predetermined cluster group call.
  • the UE may seriously affect the standby time of the UE due to frequent interception and demodulation of the PDCCH.
  • the foregoing method is applied to the LTE PTT system, and the first message may be an extended SIBs message, and the SIBs message carries the PF parameter of the group call page and/or the PO parameter of the group call page. Then, the UE may listen to the PDCCH according to the PF parameter of the group call page and/or the PO parameter of the group call page.
  • the PF parameters carrying the group call page and the PO parameters of the group call page in the extended SIBs message are mainly described.
  • the UE may determine the PF parameter of the single-call paging and the PO parameter of the single-call paging according to the parameters required for the single-call paging.
  • the UE periodically detects the PDCCH carrying the cluster TP-RNTI according to the PF parameter of the group call page, the PO parameter of the group call page, the PF parameter of the single call page, and the PO parameter of the single call page. Further determining whether the PDCCH carries the TPCCH indication information.
  • the UE decodes the TB of the PDSCH to obtain a cluster paging RRC message on the TPCCH, and determines whether the RRC message is a cluster group paging message. If the cluster group calls the paging message, compare whether the cluster group ID in the cluster group paging message and the cluster group ID pre-stored by the UE are equal; and obtain the RRC if the two cluster group IDs are equal.
  • the T-RNTI of the message which is used for interaction between the UE and the base station.
  • the base station After acquiring the T-RNTI of the RRC message, the base station receives a cluster paging response message that is initiated by the UE according to the random access parameter, where the random access parameter is a parameter carried by the extended SIBs message; the base station sends the cluster core network to the cluster core network.
  • the cluster paging response message is used by the base station and the cluster core network to allocate resources for the cluster paging response initiated by the UE to establish a control channel and a traffic channel of the cluster group call to complete the access of the cluster group call.
  • the embodiment of the present invention further provides a listening device for paging group paging, and the structure of the device is shown in FIG.
  • the receiving module 10 is further configured to receive the extended SIBs message if the first message is an extended SIBs message, where the SIBs message carries the PF parameter of the group call page and/or the group call page. PO parameters.
  • the apparatus may also be as shown in FIG. 3, including: a determining module 30 coupled to the receiving module 10 and the listening module 20, and configured to carry the single-call paging required in the extended SIBs message.
  • the PF parameter and the PO parameter of the single call page are determined according to the parameters required for the single call page; the interception module 20 is also set to the PF parameter according to the group call page and the PO parameter of the group call page.
  • the PF parameter of the single-call paging and the PO parameter of the single-call paging periodically detect the PDCCH carrying the TP-RNTI.
  • the foregoing apparatus may further include: a module for determining whether the PDCCH carries the TPCCH indication information; and a module configured to decode the TB of the PDSCH to obtain the cluster paging RRC message on the TPCCH when the TPCCH indication information is carried. .
  • a module for determining whether the RRC message is a trunking group paging message configured to compare the cluster group ID and the UE pre-population in the cluster group paging message in the case of determining the cluster group paging message
  • a module for whether the saved cluster group IDs are equal is configured to acquire a T-RNTI of the RRC message as a module for interaction between the UE and the base station if the two cluster group IDs are equal.
  • PREFERRED EMBODIMENT The preferred embodiment proposes a paging and paging response method in an LTE PTT system, mainly related to logical paging and channel mapping of cluster paging, extended SIBs messages, paging and paging responses of cluster group calls. Processing.
  • the LTE PTT system adds a new paging logical channel based on the original LTE system, as shown in FIG. 4 .
  • Trunking Paging CHannel (TPCH) logical channel the LTE PTT paging completed by the TPCH logical channel includes two parts: group call and single call. This patent only refers to the group call paging part.
  • PF/PO of LTE is calculated according to the IMSI of the UE. If the LTE PTT group call is also implemented according to this idea, when a certain UE belongs to multiple groups, the PF/PO is calculated according to the LTE formula.
  • a certain UE needs to listen on multiple PF/POs. In this way, the UE will frequently detect and demodulate the PDCCH, and the standby time of the UE is severe. At the same time, it will frequently listen to multiple PF/POs. , may cause some group call paging messages to be lost without timely processing. For this reason, in the extended SIBs message of the LTE PTT system, the PF and PO parameters of the group call paging are increased, so that the UEs belonging to the multiple groups only need to listen to the PDCCH under the fixed PF and PO. As shown in FIG.
  • Step S402 The UE acquires extended SIBs information, obtains random access parameters, reselect parameters, and Group call parameters and parameters required for single call.
  • Step S404 The PDCCH is periodically detected according to the paging PO and the PF of the group call and the single call, and the paging message sent to itself is parsed, and then the cluster base station is accessed through a random access procedure according to the cluster random parameter.
  • Step S406, establishing a control channel and a traffic channel of the cluster group call for the group call.
  • the added downlink logical channel includes a TPCH, a TGCCH, and a trunking group traffic channel (TCTCH), which are mapped to a downlink shared channel of the downlink transport channel (Downlink Shared Channel, referred to as DL-SCH), which in turn is mapped to the PDSCH of the downlink physical channel.
  • the TPCH is used for the paging of the trunk; the TGCCH is used for transmitting the downlink control message; and the TGTCH is the traffic channel for the user to receive the downlink service packet.
  • the channel ID of these newly added logical channels is different from the channel ID range of the logical channel specified by the LTE protocol.
  • the LTE PTT system can determine whether the current message is from the LTE or LTE PTT system according to the difference of the logical channel ID, and then perform corresponding processing.
  • the added uplink logical channel has a TGCCH, and is mapped to an uplink shared channel (Uplink Shared Channel, referred to as UL-SCH) of the uplink transport channel, and further mapped to a physical uplink shared channel of the downlink physical channel (Physical Uplink Shared Channel). , referred to as PUSCH).
  • the TGCCH is used to transmit uplink control messages.
  • the channel ID of the TGCCH is different from the channel ID range of the logical channel specified by the LTE protocol.
  • the LTE PTT system can determine whether the control message sent by the UE to the LTE PTT system is a control message of the LTE or LTE PTT according to the difference of the logical channel ID, and then perform corresponding processing.
  • the cluster core network has the function of specifically handling cluster paging (including single call and group call).
  • the control plane adds a new cluster module, which is set to implement cluster-related functions, including cluster paging function; add a new cluster module in the user plane, and set to implement cluster-related functions, including grouping of cluster messages. And other functions; Add a new cluster module in Medium Access Control (MAC), set to implement cluster-related functions, including cluster scheduling.
  • MAC Medium Access Control
  • the LTE PTT terminal acquires the paging parameter and the random access parameter according to the new extended SIBs, and according to the group call paging parameter PF, PO in the new extended SIBs, and the calculated PF, PO of the single-call paging, the periodic detection zone
  • the PDCCH of the TP-RNTI if the channel has the TPCCH indication information, the UE decodes the TB of the PDSCH, decodes the cluster paging RRC message on the TPCCH, and determines whether the paging message is a cluster group paging message; If yes, the pop group compares the cluster group ID in the group paging message with the cluster group ID saved by the UE, and determines whether the two are equal.
  • the T-RNTI is obtained for the interaction between the subsequent UE and the evolved Node B (eNB); then, the UE sends the paging to the base station of the LTE PTT according to the random access parameter.
  • the base station sends a paging response message to the cluster core network, and the cluster core network and the base station start to allocate resources for the cluster paging response, establish a control channel and a service channel of the cluster group call, thereby completing the LTE PTT cluster group call.
  • the called access is shown in Figure 8.
  • the flow is a cluster group call paging and response flow chart, and includes a complete process of paging and paging response.
  • Step S802 The LTE PTT base station periodically sends the cluster extended SIBs to the UE.
  • the message which contains the PF and PO of the group call page.
  • the UE After receiving the SIBs message, the UE saves the information, and periodically detects the PDCCH with the TP-RNTI in the PF/PO corresponding to the group call.
  • Step S804 After the calling process of the cluster group call is completed, the cluster core network sends a cluster group call paging message to the relevant eNB according to the Tracking Area (TA) list registered by all the UEs in the group call. .
  • TA Tracking Area
  • the cluster core network does not Then, the cluster group call paging message is sent; if the base station where the UE is located has not delivered the paging, the cluster core network sends a cluster group call paging message to the control plane cluster module of the base station where the UE is located.
  • the cluster group paging message includes a cluster group ID and a tracking area identifier (TAI) list.
  • the core network sends a paging message
  • the cluster core network sends the cluster group call page.
  • the message is sent to the base station, where the cluster group call paging message includes a cluster group ID and a TAI list.
  • the control plane cluster module acquires the cells corresponding to the TAs in the TAI list according to the TAI list in the paging message, and then sends the cluster group paging message to the cells. .
  • the cluster paging message includes a cluster group ID and a ⁇ -RNTL step S808, and the user plane cluster module receives the cluster group call page message sent by the control plane cluster module, and then performs the scheduling by the joint MAC cluster module. Then, the user terminal sends a message message containing the cluster group call page.
  • Step S810 The UE periodically detects the PDCCH with the TP-RNTI according to the PF and the PO of the cluster paging (including the single call and the group call), and finds that the channel has the TPCCH indication information, and the UE decodes the TB of the PDSCH, and decodes the TPCCH.
  • the cluster paging RRC message determines whether the paging message is a cluster group paging message or a cluster single paging message. In this process, the group call, the T-RNTI is obtained, and the random access procedure is initiated. And accessing the LTE PTT system, and sending a cluster group call page response message to the eNB.
  • the cluster group call response message includes a cluster group ID.
  • Step S812 The user plane/MAC cluster module receives the cluster group call page response message of the UE, and forwards the message to the control plane cluster module.
  • the control plane cluster module processes the cluster group call page response message, and sends a cluster group call page response message to the cluster core network.
  • the cluster group call response message includes a cluster group ID.
  • Step S816 the cluster core network sends a cluster group call context establishment message to the control plane cluster module, where the message includes the cluster group ID, the group call attribute, the aggregate maximum bit rate (abbreviated as AMBR), and the cluster wireless connection. Trunking Radio Access Bearer (T-RAB for short), security parameters, etc.
  • Step S820 After the cluster group call service channel is completed, the control plane cluster module sends a cluster group call context establishment response message to the cluster core network.
  • the group call context establishment response message has a successfully established T-RAB list and a failed T-RAB list.
  • Step S822 after receiving the cluster group call context establishment response message, the cluster core network completes the connection work of the group call master and the called party, and then sends a call right prompt message to the called user terminal. At this time, the called user terminal can answer the voice from the calling party or receive the visual service from the calling party.
  • the UE may frequently listen to multiple PF/POs, which may result in partial group call paging messages being lost in time.
  • the problem increases the standby time of the UE and enhances the reliability of the group call paging message transmission.
  • the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from this
  • the steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
  • the technical solution provided by the embodiments of the present invention can be applied to the field of communications, and the related technologies can solve the problem that the UE seriously affects the standby time of the UE due to frequent interception and demodulation of the PDCCH, and at the same time, frequently Listening to multiple PF/POs may result in partial group call paging messages being lost due to timely processing, thereby increasing the standby time of the UE and enhancing the reliability of group call paging message transmission.

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Abstract

L'invention concerne un procédé et un dispositif de surveillance de radiomessagerie d'appels de groupe à ressources partagées. Selon le procédé, un UE reçoit un premier message provenant d'une station de base, et l'UE surveille un canal de commande physique de liaison descendante (PDCCH) en une occasion et/ou une position de radiomessagerie d'appels de groupe à ressources partagées indiquée par le premier message. La présente invention permet de résoudre le problème posé dans les technologies associées par le fait qu'un temps de veille de l'UE est gravement affecté étant donné que l'UE surveille et démodule fréquemment le canal PDCCH, et qu'une partie des messages de radiomessagerie d'appels de groupe n'est pas traitée en temps et est perdue du fait que de multiples PF/Po sont fréquemment surveillés. Par ailleurs, le temps de veille de l'UE est augmenté, et la fiabilité de la transmission d'un message de radiomessagerie d'appels de groupe est améliorée.
PCT/CN2014/071147 2013-01-23 2014-01-22 Procédé et dispositif de surveillance de radiomessagerie d'appels de groupe à ressources partagées WO2014114240A1 (fr)

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