WO2012155476A1 - Équipement d'utilisateur, système et procédé pour régler une priorité de fréquence mbms - Google Patents

Équipement d'utilisateur, système et procédé pour régler une priorité de fréquence mbms Download PDF

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Publication number
WO2012155476A1
WO2012155476A1 PCT/CN2011/082528 CN2011082528W WO2012155476A1 WO 2012155476 A1 WO2012155476 A1 WO 2012155476A1 CN 2011082528 W CN2011082528 W CN 2011082528W WO 2012155476 A1 WO2012155476 A1 WO 2012155476A1
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Prior art keywords
mbms
user equipment
mbms service
frequency
cell
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PCT/CN2011/082528
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English (en)
Chinese (zh)
Inventor
许辉
马子江
毛磊
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中兴通讯股份有限公司
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Publication of WO2012155476A1 publication Critical patent/WO2012155476A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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

  • the present invention relates to Long Term Evolution (LTE) technology, and more particularly to a user equipment, system and method for setting a frequency priority of a Multimedia Broadcast Multicast Service (MBMS).
  • LTE Long Term Evolution
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS Multimedia Broadcast Multicast Service
  • 3GPP 3rd Generation Partnership Project
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • MBMS service is a technology for transmitting data from one data source to multiple target mobile user devices, which realizes the sharing of resources (including core network and access network) and improves the utilization of network resources (especially air interface resources). rate.
  • the MBMS service defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, and provide a variety of rich video, audio and multimedia services, which undoubtedly conforms to the future.
  • the trend of mobile data development provides a better business prospect for the development of 3G.
  • the user equipment (UE) that receives the MBMS service may be in one of two states: one is an RRC connected state (RRC-CONNECTED, referred to as a connected state); the other is an RRC idle state (RRC-IDLE, referred to as idle)
  • RRC-CONNECTED RRC-CONNECTED
  • RRC-IDLE RRC idle state
  • only the UE in the idle state is studied. According to whether the UE is receiving the unicast service, it can be determined whether the UE that is receiving the MBMS service is in the connected state or in the idle state; when the UE is receiving the unicast service, the UE is in the connected state; the UE in the idle state is not established with the network side.
  • the radio resource control (RRC, Radio Resources Control) is connected, and the UE in the connected state establishes an RRC connection with the network side.
  • RRC Radio Resource Control
  • the cell selection or reselection procedure is generally used to enter the target cell; for the connected UE, the cell handover procedure is generally used to enter the target cell.
  • the UE If the UE has the MBMS service being received in the source cell, after the UE enters the target cell, the UE reads the message of the Broadcast Control Channel (BCCH, Broadcast Control CHannel) and the Multicast Control Channel (MCCH, Multicast Control Channel) to Obtain resource configuration information of the MBMS service in the target cell.
  • BCCH Broadcast Control CHannel
  • MCCH Multicast Control Channel
  • the target cell and the source cell belong to the same MBMS over a Single Frequency Network (MB SFN) area, that is, the target cell and the source cell belong to the MBSFN area, the UE does not have to read after entering the target cell.
  • MB SFN Single Frequency Network
  • the resource configuration information of the MBMS service can directly receive the MBMS service in the target cell by using the resource configuration information of the MBMS service of the source cell (current cell), and realize the continuity of the MBMS service; if the target cell and the source cell belong to different MBSFN areas, The UE needs to read the resource configuration information of the MBMS service after entering the target cell. If the MBMS service that the UE needs to receive in the target cell is not sent, the UE cannot read the resource configuration information of the MBMS service after entering the target cell. Unable to receive MBMS service.
  • the receiving status of the UE having the MBMS service capability includes: receiving the MBMS service, and interested in receiving the MBMS service.
  • Interested in receiving the MBMS service means that the UE has not received the MBMS service and is ready to receive the MBMS service.
  • the UE can listen to the MBMS notification message and further read the MCCH message and the MBMS service data according to the MBMS notification message.
  • an LTE-A cell In an LTE system, a cell has only one uplink carrier and downlink carrier.
  • LTE-A Long Term Evolution-Advanced Long Term Evolution-Advance
  • an LTE-A cell may be configured with multiple component carriers (CC, Component Carrier) and multiple CCs. They can be aggregated to form a transmission bandwidth of up to 100 MHz, and the UE can perform data transmission and reception on one or more CCs (depending on the capabilities of the UE itself), which is called CA (Carrier Aggregation).
  • CA Carrier Aggregation
  • the idle mode UE always resides in a certain one.
  • the component carrier On the component carrier.
  • a component carrier activation process is required to manage the carrier, so that the UE can perform data scheduling on multiple component carriers at the same time.
  • the current 3GPP discussion agrees that only MBMS service continuity deployed on one frequency is considered.
  • the component carrier that provides the MBMS service is referred to herein as the MBMS frequency.
  • the MBMS service may be transmitted in a point-to-point (PTP) manner.
  • PTP point-to-point
  • the radio access network (RAN) side does not know that the MBMS service passes. Unicast transmission.
  • the cell selection or reselection belongs to mobility in the UE idle state.
  • Cell selection includes: initial cell selection, returning to idle state from the connected state, and re-entering the service.
  • the cell selection includes the UE searching for the strongest cell on each carrier frequency in each supported RAT (Radio Access Technology) until a suitable cell is found.
  • the UE When leaving the connection mode, the UE usually selects the cell connected in the past, but the connection release message may include information indicating that the UE searches for the cell on the specific frequency; when the UE finds that there is no suitable cell in the selected PLMN, performing "arbitrary cell search", this In this state, the UE is not allowed to receive the MBMS service.
  • cell selection or reselection The purpose of cell selection or reselection is to ensure that the idle state UE resides in the best cell.
  • cell selection or reselection is a necessary process, mainly due to the mobility of the UE and the volatility of the wireless environment, thereby causing fluctuations in signal strength and interference levels.
  • the network side can set up to 8 different priorities for different frequencies.
  • the idle state UE performs cell selection or reselection according to the frequency priority order. When the frequency priorities are the same, the UE performs cell according to the order of the radio channel quality. Select or reselect.
  • each user equipment uses its own radio measurements (such as received beacon channel levels) and network-provided parameters (such as thresholds) and partial system information to select or reselect cells.
  • the guidelines are evaluated.
  • user equipment needs to evaluate reselection criteria using measurements from different available frequencies and access technologies.
  • the network controls the parameters used by the reselection criteria, allowing the UEs in idle state to be moved to the most relevant network layer as needed by the network.
  • the 3GPP discussion agrees that for the idle state UE receiving the MBMS service, when the cell is selected or reselected, the MBMS frequency is taken as the highest priority, and then the cell selection or reselection is performed according to the cell selection or reselection rule of the unicast service.
  • the idle state UE of the MBMS service receives the MBMS frequency as the highest priority and enters the target cell through cell selection or reselection.
  • the centralized aggregation in the same cell may generate a larger
  • the network load, especially the UE takes the MBMS frequency as the highest priority, which may result in the UE being unable to reselect to other cells, resulting in increased network load. If the idle state UE initiates an RRC connection request, network congestion may result.
  • the main purpose of the present invention is to provide a user equipment, a system, and a method for configuring an MBMS frequency priority setting, which are used to solve the problem of network congestion and excessive load caused by an idle UE in order to implement MBMS service continuity. .
  • the present invention provides a method for configuring MBMS frequency priority of a multimedia broadcast multicast service, including:
  • the MBMS frequency is set to the highest priority for cell selection or reselection; after the user equipment receives the MBMS service termination in the target cell, the MBMS frequency is no longer used as the MBMS frequency. The highest priority.
  • the user equipment sets the MBMS frequency to the highest priority before the MBMS service that is interested in receiving begins;
  • the method further includes: after the user equipment enters the target cell, determining whether the MBMS service of interest starts, if it starts, receiving the MBMS service in the target cell, until the MBMS service is terminated, and if not, continuing to monitor the MCCH notification information.
  • the user equipment knows the start time of the MBMS service that is of interest to receive, and sets the MBMS frequency to the highest priority before the start time.
  • the start time of the MBMS service be T1, and set the priority of the MBMS frequency priority.
  • the minimum time interval means that the time required for the user equipment to set the MBMS frequency priority to enter the target cell is T, and the MBMS service just starts when entering the target cell.
  • the user equipment learns the start time information by using the received service statement, the monitored MBMS notification message, or the received system message.
  • the user equipment sets the MBMS frequency to the highest priority when starting to be interested in the MBMS service;
  • the method further includes: after the user equipment enters the target cell, determining whether the MBMS service of interest starts, if it starts, receiving the MBMS service in the target cell, until the MBMS service is terminated, and if not, continuing to monitor the MCCH notification information. Or return to the source cell.
  • the MBMS service termination includes one or more of the following situations:
  • the MBMS service ends; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; the user equipment receives the unicast paging message; and the user equipment receives the emergency call.
  • the user equipment performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, the user equipment reselects to the source cell, and the selected suitable cell does not include The source cell, the user equipment randomly selects a camp in the selected suitable cell.
  • the present invention also provides a user equipment for configuring an MBMS frequency priority, including a selection module and a receiving module, when the user equipment is in an idle state:
  • the selection module is configured to: when the user equipment is interested in receiving an MBMS service, The MBMS frequency is set to the highest priority for cell selection or reselection; and when the target cell receives the MBMS service termination, the MBMS frequency is no longer the highest priority.
  • the receiving module is configured to: receive the MBMS service in a target cell.
  • the selection module is configured to set the MBMS frequency to the highest priority before the MBMS service of interest is started;
  • the user equipment further includes a judging module, configured to: determine, after the user equipment enters the target cell, whether the MBMS service that is interested in receiving starts, if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated. If it does not start, continue to listen to the MCCH notification message.
  • the selection module is set to:
  • the receiving module knows the start time of the MBMS service that is of interest to receive, and sets the MBMS frequency to the highest priority before the start time.
  • the selection module is set to a preset range that is less than ⁇ 2 at the time.
  • the minimum time interval means that the selection module sets the MBMS frequency priority to the time required for the user equipment to enter the target cell, and the MBMS service just starts when entering the target cell.
  • the receiving module is further configured to learn the start time information by any one of the following: a received service announcement, a monitored MBMS notification message, a MCCH change notification, or a received system message.
  • the selection module is configured to set the MBMS frequency to the highest priority when the user equipment starts to be interested in the MBMS service;
  • the user equipment further includes a judging module, configured to: determine, after the user equipment enters the target cell, whether the MBMS service of interest starts, if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if not started, Continue to listen to the MCCH notification information or notify the selection module to return to the source cell.
  • the MBMS service termination includes one or more of the following situations:
  • the MBMS service ends; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; the user equipment receives the unicast paging message; and the user equipment receives the emergency call.
  • the selection module is configured to not use the MBMS frequency as the highest priority in the following manner: performing cell reselection according to the frequency priority set by the network side, and not selecting from the MBMS frequency, for example, selecting a suitable cell including the source cell Then, the user equipment is reselected to the source cell, otherwise a camp is randomly selected in the selected suitable cell.
  • the present invention also provides a system for configuring an MBMS frequency priority
  • the system includes the user equipment and the network side device as described above;
  • the network side device includes a sending module configured to send the configured frequency priority information and cell selection or reselection configuration information to the user equipment.
  • the idle state user equipment that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority when performing cell selection or reselection; after receiving the MBMS service termination, The UE no longer sets the MBMS frequency to the highest priority. Effectively avoids network congestion and excessive load.
  • FIG. 1 is a schematic structural diagram of an embodiment of a user equipment according to the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of a system of the present invention.
  • FIG. 3 is a flow chart of an embodiment of a method of the present invention.
  • 4 is a corresponding flowchart of an application example of the present invention.
  • FIG. 5 is a flowchart of a second application example of the present invention.
  • FIG. 6 is a schematic diagram of setting MBMS frequency priority in Application Example 1 of the present invention. Preferred embodiment of the invention
  • the present invention provides a user equipment, system, and method for configuring an MBMS frequency priority setting.
  • the MBMS frequency is set to the highest priority for cell selection or reselection; After the user equipment receives the MBMS service termination in the target cell, the MBMS frequency is no longer set to the highest priority.
  • the MBMS frequency can also be referred to as an MBMS carrier, or an MBMS carrier, or an MBMS frequency, or an MBMS frequency layer, and the like.
  • the frequency priority described herein refers to the frequency priority used for cell selection or cell reselection purposes.
  • This embodiment provides a user equipment for configuring an MBMS frequency priority, as shown in FIG. 1 , including a selection module and a receiving module.
  • the selecting module is configured to set the MBMS frequency to the highest priority for cell selection or reselection when the user equipment is interested in receiving the MBMS service; and is further configured to not set the MBMS frequency to be after the receiving of the MBMS service in the target cell is terminated. The highest priority.
  • the receiving module is configured to receive the MBMS service in a target cell.
  • the selection module sets the MBMS frequency to the highest priority before the start of the MBMS service that is of interest to receive;
  • the user equipment further includes a determining module, configured to determine, after the user equipment enters the target cell, whether the MBMS service that is interested in receiving starts, and if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if Continue to listen to the MCCH notification letter if it has not started Interest.
  • a determining module configured to determine, after the user equipment enters the target cell, whether the MBMS service that is interested in receiving starts, and if not, notify the receiving module to receive the MBMS service, until the MBMS service is terminated, if Continue to listen to the MCCH notification letter if it has not started Interest.
  • the MBMS service that is interested in receiving begins before the receiving module knows that the MBMS service that is interested in receiving is before the start time.
  • the receiving module knows the start time information by any one of the following methods: a received service statement, a monitored MBMS notification message, or a received system message.
  • the selection module sets the MBMS frequency to the highest priority when the user equipment starts to be interested in the MBMS service;
  • the user equipment further includes a judging module, configured to determine whether the MBMS service of interest starts after the user equipment enters the target cell, and if yes, notify the receiving module to receive the MBMS service until the MBMS service is terminated, and if not, continue to listen to the MCCH notification.
  • the information or notification selection module returns to the source cell.
  • the MBMS service termination includes the following situations:
  • the MBMS service is sent to the end; the higher priority MBMS service preempts the MBMS service resource; the MBMS service is suspended according to the counting result; the user equipment receives the unicast paging message; and the user equipment receives the emergency call.
  • the MBMS frequency is no longer the highest priority.
  • the selection module performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, The selection module reselects the user equipment to the source cell, otherwise the selection module randomly selects a camp in the selected suitable cell.
  • the embodiment provides a system for configuring an MBMS frequency priority, as shown in FIG. 2, including the user equipment and the network side device according to the first embodiment;
  • the network side device includes a sending module, configured to send the configured frequency priority information and the cell selection or reselection configuration information to the user equipment.
  • the frequency priority information set on the network side refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also includes the MBMS.
  • the priority of the frequency refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also includes the MBMS. The priority of the frequency.
  • the network side sends cell selection or reselection configuration information through system messages and/or other RRC signaling messages.
  • the cell selection or reselection configuration information includes but is not limited to: measurement rules, frequency priorities, access restrictions, time parameters, and the like.
  • This embodiment provides a method for configuring an MBMS frequency priority. As shown in FIG. 3, the method includes the following steps:
  • Step 301 The network side sends a cell selection or reselection related configuration information.
  • the network side sends cell selection or reselection configuration information by using system messages and/or other RRC signaling messages;
  • the cell selection or reselection configuration information includes but is not limited to: a measurement rule, a frequency priority, an access restriction, a time parameter, and the like;
  • the above cell selection or reselection configuration information may be provided by one or more signaling messages.
  • Step 302 The idle state UE that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority, and performs cell selection or reselection according to the cell selection or reselection criteria;
  • the cell selection or reselection criterion refers to a cell selection or reselection criterion of a unicast service, such as a measurement rule, an S-criterion, an R-criterion, an access restriction, and the like;
  • the same priority is based on the radio link quality, so the UE receiving or interested in receiving the MBMS can reselect to the MBMS frequency cell through the above procedure.
  • Step 303 The idle state UE receives the MBMS service in the target cell until the MBMS service is terminated, and then the UE no longer takes the MBMS frequency as the highest priority.
  • the UE does not use the MBMS frequency as the highest priority.
  • the UE performs cell reselection according to the frequency priority set by the network side, and does not select from the MBMS frequency. If the selected suitable cell includes the source cell, the UE reselects. Source cell, otherwise the UE randomly selects one of the selected suitable cells.
  • Application example one
  • the scenario of setting the MBMS frequency priority and performing cell selection or reselection before the start of the MBMS service that is interested in receiving the MBMS service includes:
  • Step 401 The network side sends a cell selection or reselection related configuration information.
  • the network side sends cell selection or reselection configuration information by using a system message or other RRC signaling message;
  • the cell selection or reselection configuration information includes but is not limited to: a measurement rule, a frequency priority, an access restriction, a time parameter, and the like;
  • Step 402 The UE sets the MBMS frequency priority to the highest, and performs cell selection or reselection according to the cell selection or reselection criteria.
  • the time when the UE sets the MBMS frequency priority to the highest is: before the MBMS service of interest is started; that is, the UE knows the start time of the MBMS service of interest, and before the start time, the UE will MBMS.
  • the frequency priority is set to the highest and the cell is reselected.
  • the start time of the MBMS service is T1
  • the minimum time interval between the time when the MBMS frequency priority is set and the start time of the MBMS service is T
  • T2 T1 - UE
  • the UE sets the MBMS frequency priority to be within a preset range that is less than T2.
  • the time interval between T3 and T2 is a preset range; the preset range can be set according to actual needs.
  • the minimum time interval mentioned above refers to that the time required for the UE to set the MBMS frequency priority to enter the target cell is T, and the MBMS service just starts when entering the target cell.
  • the MBMS service start time can be obtained by the following methods:
  • the MCCH change notification (MBMS notification message) monitored by the UE, or the UE receives the service statement sent by the BM-SC, or is learned by the received system message.
  • the cell selection or reselection criterion refers to a cell selection or reselection criterion of a unicast service, such as a measurement rule. S-criterion, R-criterion, access restrictions, etc.;
  • the UE sets the frequency of providing the MBMS service in the source cell to the highest priority, regardless of the frequency priority set by the network side; then, the UE selects the target cell from the cells of the same MBMS frequency in the neighboring cells of the source cell. .
  • the UE selects the neighbor cell with the best radio channel quality.
  • the UE uses the MBMS frequency as the highest priority frequency;
  • Step 403 the UE enters the target cell through the cell selection or reselection process, determines whether the MBMS service of interest starts, and if yes, proceeds to step 404, otherwise proceeds to step 406;
  • the method for the UE to determine whether the MBMS service is started is: the UE reads the SIB13 first, and then reads the MCCH message. If the MBMS service identifier exists in the MCCH message, the MBMS service of interest has started, if the service does not exist. The identification indicates that the MBMS service of interest has not started.
  • Step 404 The UE receives the MBMS service in the target cell until the MBMS service is terminated; then, step 405 is performed;
  • the UE receives the MBMS service of interest in the target cell;
  • the MBMS service termination may be the end of the MBMS service transmission, or the MBMS service termination caused by other reasons.
  • the higher priority MBMS service preempts the MBMS service resource through the ARP Pre-emption, or suspends the MBMS service according to the counting result.
  • receive a unicast paging message such as MT-Mobile Terminating, mobile called
  • the UE receives an emergency call, and so on.
  • the MBMS service is interrupted, and the UE may continue to receive the MBMS service or terminate the reception of the MBMS service after the interruption ends.
  • Step 405 The UE no longer receives the MBMS service, and no longer sets the MBMS frequency to the highest priority, and the process ends.
  • the UE no longer uses the MBMS frequency as the highest priority: the UE sets the frequency according to the network side.
  • the priority is used for cell reselection, and is not selected from the MBMS frequency. If the selected suitable cell includes the source cell, the UE reselects to the source cell, otherwise the UE randomly selects one of the selected suitable cells.
  • the UE no longer receives the MBMS service, which means that the UE terminates receiving the MBMS service, and is not ready to continue to receive other MBMS services.
  • the frequency priority information set by the network side refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also the priority of the MBMS frequency.
  • the cell selection or reselection criteria refer to cell selection or reselection criteria for unicast services, such as measurement rules, S-criterion, R-criterion, access restrictions, and the like.
  • Step 406 The UE monitors the MCCH notification information in the target cell, receives the MBMS service when the MBMS service is interested, and then performs step 404.
  • Step 501 The network side sends a cell selection or Reselect the relevant configuration information.
  • the network side sends cell selection or reselection configuration information by using a system message or other RRC signaling message;
  • the cell selection or reselection configuration information includes but is not limited to: a measurement rule, a frequency priority, an access restriction, a time parameter, and the like;
  • Step 502 The UE sets the MBMS frequency priority to the highest, and performs cell selection or reselection according to the cell selection or reselection criteria.
  • the UE that is interested in receiving the MBMS service sets the MBMS frequency priority to the highest time: when the UE starts to be interested in a certain MBMS service, and does not know when the MBMS service starts.
  • the cell where the UE is located is a closed subscriber group (CSG, Closed Subscriber Group) cell
  • CSG Closed Subscriber Group
  • the UE uses the MBMS frequency as the highest priority frequency
  • the cell selection or reselection criterion refers to a cell selection or reselection criterion of a unicast service, such as a measurement rule, an S-criterion, an R-criterion, an access restriction, and the like;
  • the UE sets the frequency of providing the MBMS service in the source cell to the highest priority, regardless of the frequency priority set by the network side; then, the UE selects the target cell from the cells of the same MBMS frequency in the neighboring cells of the source cell. .
  • the UE selects the neighbor cell with the best radio channel quality.
  • the UE uses the MBMS frequency as the highest priority frequency.
  • CSG Closed Subscriber Group
  • Step 503 the UE enters the target cell through the cell selection or reselection process, determines whether the MBMS service of interest starts, and if yes, proceeds to step 504, otherwise proceeds to step 506 or returns to step 502;
  • the method for the UE to determine whether the MBMS service of interest starts is: the UE reads the SIB13 first, and then reads the MCCH message. If there is an MBMS service identifier of interest in the MCCH message, the MBMS service of interest has started, otherwise indicating that the interested The MBMS business has not started.
  • Step 504 The UE receives the MBMS service in the target cell until the MBMS service is terminated. If the MBMS service of interest is started in the target cell, the UE receives the MBMS service in the target cell.
  • the MBMS service termination may be the end of the MBMS service transmission, or the MBMS service termination caused by other reasons.
  • the higher priority MBMS service preempts the MBMS service resource through the ARP Pre-emption, or suspends the MBMS service according to the counting result (suspension). ), or receive a unicast paging message, or the UE receives an emergency call, and so on.
  • the MBMS service is interrupted, and the UE may continue to receive the MBMS service or terminate the reception of the MBMS service after the interruption ends.
  • Step 505 The UE no longer receives the MBMS service, and the UE no longer sets the MBMS frequency to the highest priority, and the process ends.
  • the UE no longer uses the MBMS frequency as the highest priority: the UE sets the frequency according to the network side.
  • the priority is used for cell reselection, and is not selected from the MBMS frequency. If the selected suitable cell includes the source cell, the UE reselects to the source cell, otherwise the UE randomly selects one of the selected suitable cells.
  • the UE does not receive the MBMS service, which means that the UE terminates receiving the MBMS service, and is not ready to continue receiving other MBMS services;
  • the frequency priority information set by the network side refers to the frequency priority information indicated by the network side through system messages or other RRC signaling messages, including the priorities of the same frequency and the different frequency, and also the priority of the MBMS frequency.
  • the cell selection or reselection criteria refer to cell selection or reselection criteria for unicast services, such as measurement rules, S-criterion, R-criterion, access restrictions, and the like.
  • Step 506 The UE monitors the MCCH notification information in the target cell, receives the MBMS service when the MBMS service is interested, and then performs step 504.
  • the idle state user equipment (UE) that is interested in receiving the MBMS service sets the MBMS frequency to the highest priority when performing cell selection or reselection; after receiving the MBMS service termination, UE no longer sets MBMS frequency to the highest priority. Effectively avoids network congestion and excessive load.

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Abstract

La présente invention a pour objet principal un équipement d'utilisateur, un système et un procédé de réglage de priorité de fréquence de service MBMS (service de diffusion non sélective/sélective multimédia). Le procédé consiste en ce que : lorsque l'équipement d'utilisateur (UE) dans l'état inactif est intéressé par la réception d'un service MBMS, il règle la priorité de fréquence MBMS à la priorité la plus élevée afin d'effectuer une sélection ou une resélection de cellule. Après que l'équipement d'utilisateur dans la cellule de destination a terminé de recevoir le service MBMS, la priorité de fréquence MBMS ne doit plus être la priorité la plus élevée. Le problème de congestion et de surcharge du réseau, qui est causé par l'équipement d'utilisateur dans l'état inactif pour implémenter une continuité de service MBMS, peut être résolu par le principe technique de la présente invention.
PCT/CN2011/082528 2011-08-19 2011-11-21 Équipement d'utilisateur, système et procédé pour régler une priorité de fréquence mbms WO2012155476A1 (fr)

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