WO2011147246A1 - Procédé et système pour une allocation de ressources de liaison montante et une rétroaction de diffusion multidiffusion multimédia - Google Patents

Procédé et système pour une allocation de ressources de liaison montante et une rétroaction de diffusion multidiffusion multimédia Download PDF

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Publication number
WO2011147246A1
WO2011147246A1 PCT/CN2011/073405 CN2011073405W WO2011147246A1 WO 2011147246 A1 WO2011147246 A1 WO 2011147246A1 CN 2011073405 W CN2011073405 W CN 2011073405W WO 2011147246 A1 WO2011147246 A1 WO 2011147246A1
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WIPO (PCT)
Prior art keywords
uplink
subframe
uplink subframe
feedback
subframes
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PCT/CN2011/073405
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English (en)
Chinese (zh)
Inventor
苟伟
毕峰
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中兴通讯股份有限公司
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Publication of WO2011147246A1 publication Critical patent/WO2011147246A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of Multimedia Broadcast Multicast Service (MBMS), and in particular, to an MBMS uplink resource allocation and feedback method.
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS Multimedia Broadcast Multicast Service
  • 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 future mobile
  • 3G 3rd Generation
  • the MBMS is transmitted by the Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN).
  • MBSFN mode is understood as a multi-cell joint transmission method, that is, the cells in a certain geographical location are in the same manner.
  • the same MBMS data is sent on the same time and frequency resource.
  • This certain geographical location is called "MBSFN area”.
  • the network side needs to know the reception status of an MBMS in an MBSFN area, that is, the How many User Equipments (UEs) are being received by the MBMS, or how many UEs are interested in the MBMS to be sent.
  • UEs User Equipments
  • the network side When the network side knows that a certain MBMS is being sent, because no user is interested, no UE is receiving, then the network side can turn off the transmission of the MBMS, which can help the network side save time-frequency resources and save power.
  • the MBMS receives two states: one is the idle state (RRC_IDLE). In the idle state, the UE keeps the downlink and the network side synchronized, and the uplink does not necessarily correspond to the network. The other side is synchronized; the other is the connection status (RRC_CONNECTED). In the connected state, the UE keeps the downlink and uplink synchronized with the network side.
  • RRC_IDLE the idle state
  • RRC_CONNECTED connection status
  • the UE keeps the downlink and uplink synchronized with the network side.
  • the UE may send the uplink data to the network side.
  • the network side can correctly receive and decode, and obtain the uplink data sent by the UE.
  • the UE directly sends uplink data to the network side in an idle state, and the network side can obtain the purpose of transmitting uplink data by the UE through special processing.
  • each UE cannot blindly transmit data on any uplink resource, and specific resources should be allocated by the network side, so that when the data arrives at the network side, the network side can Know which data is sent by the UE and what it is used for.
  • the uplink feedback of the MBMS it is also necessary to assign an uplink feedback resource to the MBMS-capable UE, so that the terminal performs the uplink data transmission of the MBMS. Then, for MBMS, how to design resource allocation, signaling of indication, and how the UE performs feedback becomes a problem that needs to be solved.
  • the technical problem to be solved by the present invention is to provide a method and system for uplink resource allocation and feedback of a multimedia broadcast multicast service, which is used for flexible physical resource allocation of MBMS uplink feedback and utilization of allocated physical resources. Perform upstream feedback.
  • the present invention proposes a multimedia broadcast multicast service (MBMS).
  • the uplink resource allocation and the feedback method the method includes: the network side allocates an uplink subframe for uplink feedback and a physical resource configured in the uplink subframe for the MBMS, and performs uplink subframe indication information and/or physical of the uplink subframe.
  • the resource information informs the user device by way of agreement, or implicit, or signaling.
  • the method further includes: the network side sending a feedback statistics message to the user equipment, where the feedback statistics message carries MBMS information used to notify the user equipment that the feedback count needs to be performed; and the uplink of the user equipment allocated by the network side
  • the feedback information of the MBMS required by the network side is transmitted in the physical resources configured in the subframe and the uplink subframe.
  • the uplink subframe indication information includes: one of uplink subframe position information or uplink subframe start position information, uplink subframe number information, and uplink subframe interval information, or a combination thereof;
  • the uplink subframe position information is used to describe the number of subframe intervals of the allocated uplink subframe and the downlink subframe in which the statistics message is sent, or to describe the allocated uplink subframe and multiple downlink subframes for sending the statistics message.
  • the multiple MBMS points are allocated to the MBMS.
  • An uplink subframe is allocated, and the same or different physical resources are allocated to the multiple MBMSs in the uplink subframe, where the uplink subframe indication information includes uplink subframe location information.
  • An uplink subframe where the multiple uplink subframes are consecutive or discrete uplink subframes; in the multiple consecutive or discrete uplink subframes, multiple MBMSs are allocated the same in each uplink subframe Or different physical resources, or in the plurality of consecutive or discrete uplink subframes, each uplink subframe is used for uplink feedback of one MBMS, and one corresponding MBMS is allocated in each uplink subframe.
  • the uplink subframe indication information includes uplink subframe start position information and uplink subframe number information;
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, and an uplink subframe interval.
  • the network side notifies the number of uplink subframes allocated by the user equipment in an implicit manner, and the number of uplink subframes is equal to the number of the plurality of MBMSs, and the number of uplink subframes in the uplink subframe indication information is omitted. .
  • the network side allocates uplink feedback resources for multiple MBMSs in the uplink subframe for the uplink feedback and the physical resources configured in the uplink subframe, the network side allocates uplink feedback for each MBMS.
  • An uplink subframe where the network side allocates physical resources for each MBMS in its corresponding uplink subframe;
  • the uplink subframe indication information includes an uplink subframe start position corresponding to each MBMS. among them,
  • the network side allocates uplink feedback resources for multiple MBMSs, and allocates uplink feedback for each MBMS. a plurality of uplink subframes, where the multiple uplink subframes are consecutive or discrete uplink subframes, and the same or different physical resources are allocated to the MBMS in each of the uplink subframes;
  • the step of transmitting the feedback information of the MBMS required by the network side in the uplink resource allocated by the side and the physical resource configured in the uplink subframe includes: after the user equipment receives the statistical feedback message, according to the agreed grouping rule The uplink subframe corresponding to the packet to which the packet belongs is calculated, and the physical resources in the uplink subframe and the subframe corresponding to the packet are subjected to MBMS feedback to the network side;
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, and a number of user equipment packets; the multiple uplink subframes.
  • the uplink subframe is a discrete uplink subframe
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, an uplink subframe interval, and a number of user equipment groups. among them,
  • the network side allocates the uplink feedback resource for the multiple MBMS, only the multiple MBMSs are allocated for the uplink feedback.
  • the step of transmitting the feedback information of the MBMS required by the network side in the allocated uplink subframe and the physical resources configured in the uplink subframe includes: after receiving the statistical feedback message, the user equipment calculates according to the agreed grouping rule The physical resource in the subframe corresponding to the packet to which the user belongs, and the physical resource corresponding to the packet performs MBMS on the network side Feedback. among them,
  • the statistical feedback message carries the uplink subframe indication information and/or The physical resource information in the uplink subframe; or, the statistic feedback message carries the uplink subframe indication information, and the radio network temporary identifier (RNTI) identifier used after the statistic message is sent is sent in the subsequent downlink subframe.
  • RNTI radio network temporary identifier
  • Intra-frame physical resource information; or, the statistic feedback message carries the uplink sub-frame indication information, and uses the authorization information signaling to deliver the physical resource information in the uplink sub-frame. among them,
  • the physical resource is composed of a physical resource block as a basic unit; wherein each physical resource is a resource unit used for MBMS uplink feedback; the one physical resource is composed of one or more physical resource blocks, or is fixed by The number of subcarriers is composed.
  • the present invention also provides a system for uplink resource allocation and feedback of a multimedia broadcast multicast service (MBMS), where the system includes a network side device and a user equipment, wherein the network side device is configured to: allocate for MBMS.
  • MBMS multimedia broadcast multicast service
  • the uplink subframe indication information and/or the physical resource information in the uplink subframe are notified to the user equipment by an agreed, or implicit, or signaling indication manner in the uplink subframe and the physical resource configured in the uplink subframe. among them,
  • the network side device is further configured to: send a feedback statistics message to the user equipment, where the feedback statistics message carries the MBMS information used to notify the user that the device needs to perform the feedback counting; the user equipment is configured to: obtain the network side device as the user setting The uplink subframes for uplink feedback and the physical resources configured in the uplink subframes are allocated on the network side.
  • the feedback information of the MBMS required by the network side is transmitted in the physical resources configured in the downlink subframe and the uplink subframe. among them,
  • the uplink subframe indication information includes: one of uplink subframe position information or uplink subframe start position information, uplink subframe number information, and uplink subframe interval information, or a combination thereof;
  • the uplink subframe position information is used to describe the number of subframe intervals of the allocated uplink subframe and the downlink subframe in which the statistics message is sent, or to describe the allocated uplink subframe and multiple downlink subframes for sending the statistics message.
  • each of the MBMSs is allocated multiple uplink subframes for uplink feedback, where the multiple uplink subframes are consecutive or discrete uplink subframes. All the uplink subframes are allocated with the same or different physical resources for the MBMS; after receiving the statistical feedback message, the user equipment calculates the uplink subframe corresponding to the packet to which the user belongs according to the agreed grouping rule.
  • the uplink subframe corresponding to the packet and the physical resources in the subframe perform MBMS feedback to the network side;
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, and a user equipment group number;
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, an uplink subframe interval, and a number of user equipment groups. among them,
  • the frame indication information includes an uplink subframe start position and a number of user equipment groups.
  • the user equipment calculates, according to the agreed grouping rule, the physics in the subframe corresponding to the packet to which the user belongs.
  • the resource performs MBMS feedback to the network side on the physical resource corresponding to the packet. among them,
  • the network side device When the network side device notifies the user equipment of the allocated uplink subframe indication information and the physical resource information in the uplink subframe by using a signaling indication manner:: using the statistical feedback message to carry the uplink subframe indication information and the uplink subframe The internal physical resource information; or, the statistical feedback message carries the uplink subframe indication information, and the radio network temporary identifier (RNTI) identifier used after the statistics message is sent is sent in the downlink subframe
  • the resource information is used to transmit the uplink sub-frame indication information
  • the authorization information signaling is used to deliver the physical resource information in the uplink sub-frame. among them,
  • the network side device allocates the uplink feedback resource for the multiple MBMSs, allocate multiple uplink subframes to the multiple MBMSs, where the multiple uplink subframes are consecutive or discrete uplink subframes; In multiple consecutive or discrete uplink subframes, multiple MBMS services are allocated the same or different physical resources in each uplink subframe, or in the multiple consecutive or discrete uplink subframes, An uplink subframe is used for uplink feedback of one MBMS and is used for each uplink. One or more physical resources for uplink feedback are allocated to the corresponding MBMS in the subframe; when the multiple uplink subframes are consecutive uplink subframes, the uplink subframe indication information includes an uplink subframe start position. Information, and uplink subframe number information;
  • the uplink subframe indication information includes an uplink subframe start position, an uplink subframe number, and an uplink subframe interval. among them,
  • the network side device When the network side device allocates one uplink subframe to each MBMS, the network side device notifies the number of uplink subframes allocated by the user equipment in a predetermined manner, and omits the number of uplink subframes in the uplink subframe indication information. Or, the network side device notifies the number of uplink subframes allocated by the user equipment in an implicit manner, and the number of the default uplink subframes is equal to the number of the plurality of MBMSs, and the uplink information in the uplink subframe indication information is omitted. The number of subframes is sent.
  • the network side device includes: one or more of a multi-cell coordination entity (MCE), a base station (eNB), a relay station, a broadcast multicast service center, and an MBMS gateway.
  • MCE multi-cell coordination entity
  • eNB base station
  • relay station a broadcast multicast service center
  • MBMS gateway an MBMS gateway.
  • the present invention can provide flexible MBMS uplink physical resource allocation, and the signaling overhead is very small by prior agreement or implied.
  • the method of the UE packet feedback is also used in combination with the uplink feedback resource allocation mode, and the UE side can learn about the UE that is receiving the statistical MBMS by using the user packet feedback mode of the physical resource in the uplink subframe or the subframe. Order of magnitude information.
  • FIG. 1 is a schematic diagram of allocating uplink subframes by using parameter K
  • FIG. 2 is a schematic diagram of allocating consecutive uplink subframes
  • FIG. 3 is a schematic diagram of allocating discrete uplink subframes
  • FIG. 5 is a schematic diagram of allocating multiple uplink subframes for one MBMS service
  • FIG. 6 is a flowchart of a method for uplink resource allocation and feedback of an MBMS according to an embodiment of the present invention.
  • the MBMS uplink resource allocation method and system provided in the present invention provide a specific uplink subframe and a physical resource allocation scheme in a subframe for various allocation scenarios of the uplink feedback resource.
  • the uplink feedback resource allocation scheme according to the present invention combined with the feedback statistics message, can be directly applied to the MBMS uplink feedback statistics.
  • the MBMS uplink feedback statistics are: The network side sends a feedback statistics message for one or more MBMSs.
  • the UE After receiving the statistics message, the UE sends the corresponding information to the network side according to the content of the statistics message.
  • the function of the statistics message is that the network side is used to notify the UEs of which MBMSs need to perform feedback counting, to determine whether these MBMSs are receiving UEs, or how many UEs are receiving, or which UEs are receiving, the main purpose is to determine MBMS UE reception status.
  • the network side includes: a Multi-cell/Multicast Coordination Entity (MCE), a base station (eNodeB, eNB), a relay (relay), a Broadcast Multicast Service Center (BMSC), and an MBMS gateway.
  • MCE Multi-cell/Multicast Coordination Entity
  • eNodeB, eNB base station
  • relay relay
  • BMSC Broadcast Multicast Service Center
  • MBMS gateway One or more of (MBMS Gateway, MBMS GW).
  • the system for the uplink resource allocation and feedback of the multimedia broadcast multicast service of the present invention includes: a network side device and a user equipment, where: the network side device is configured to: allocate an uplink subframe and an uplink subframe for uplink feedback for the multimedia broadcast multicast service.
  • the physical resource configured in the frame notifies the user equipment in the uplink subframe indication information and/or the physical resource information in the uplink subframe by using an agreed, or implicit, or signaling indication manner.
  • the network side device is further configured to: send a feedback statistics message to the user equipment, where the feedback statistics message carries the MBMS information used to notify the user equipment that the feedback needs to be counted; the user equipment is configured to: obtain the network side device as the user equipment Allocated for upstream
  • the fed back uplink subframe and the physical resources configured in the uplink subframe transmit the feedback information of the MBMS required by the network side in the uplink resources allocated by the network side and the physical resources configured in the uplink subframe.
  • the specific signaling of the uplink resource allocation for the MBMS on the network side includes: uplink subframe information allocated by the network side, physical resource allocation information in the uplink subframe, and the like.
  • the uplink subframe information may include one of the following information or a combination thereof: uplink subframe position or start position information, uplink subframe interval information, and uplink subframe number information.
  • the uplink subframe position information is used to describe the number of subframe intervals of the allocated uplink subframe and the downlink subframe in which the statistics message is sent, or to describe the allocated uplink subframe and multiple downlinks of the sent statistics message.
  • the number of subframe intervals of the last downlink subframe in the frame; the uplink subframe start location information, used to describe the subframe of the first uplink subframe of the allocated multiple uplink subframes and the downlink subframe of the statistics message sent The number of intervals, or used to describe the number of subframe intervals of the first one of the plurality of uplink subframes and the last one of the plurality of downlink subframes that send the statistics message; the number of uplink subframes
  • the network side allocates an uplink resource for the MBMS uplink feedback, and forms a specific signaling of the uplink resource allocation, and performs uplink feedback on the MBMS by using the allocated uplink subframe information and the physical resource allocation information source in the uplink subframe.
  • one physical resource may contain one or more physical resource blocks, or one physical resource may consist of a fixed number of subcarriers.
  • the physical resource is a basic unit of MBMS feedback.
  • the one physical resource is a resource unit that can be used for MBMS uplink feedback.
  • the network side allocates an uplink subframe for uplink feedback and a physical resource configured in the uplink subframe for the multimedia broadcast multicast service; and stipulates, or implicitly, the uplink subframe indication information and/or the physical resource information in the uplink subframe. Or notify the user equipment by signaling.
  • the method further includes: the network side sending a feedback statistics message to the user equipment, where the feedback statistics message carries MBMS information used to notify the user equipment that the feedback count needs to be performed; and the uplink of the user equipment allocated by the network side
  • the feedback information of the MBMS service required by the network side is transmitted in the physical resources configured in the subframe and the uplink subframe.
  • the uplink feedback resource allocation of the MBMS indicates which uplink physical resources are used for uplink transmission of the UE for the statistical information of the MBMS.
  • the technical solution for implementing MBMS uplink resource allocation and feedback according to the present invention will be further described in detail below with reference to specific embodiments.
  • Embodiment 1 Only one uplink subframe is allocated for multiple MBMSs.
  • the network side allocates uplink physical resources in only one uplink subframe for multiple MBMSs.
  • the downlink subframe in which the network side sends the statistics message is recorded as N. (If the statistical message data volume is large, and multiple downlink subframes are used to send statistics messages, then the last downlink subframe is denoted as N), which is indicated by the parameter K.
  • Uplink feedback subframe of MBMS is the last downlink subframe.
  • the network side allocates the same uplink subframe for multiple MBMSs for the uplink feedback of each MBMS, that is, multiple MBMSs are in the physical resource of the one, and the UE that needs feedback Feedback is made on the physical resources of the corresponding MBMS.
  • the network side sends a statistics message for a certain MBMS to the user equipment, the downlink subframe to which the statistics message is sent is recorded as N, then the uplink feedback subframe of the MBMS is N+K, as shown in FIG.
  • K is an integer greater than or equal to 4.
  • the value of K is configured by the network side as needed, and the parameter K is sent to the UE after configuration.
  • the network side directly pointed out
  • the uplink subframe position allocated for multiple MBMSs, that is, the uplink feedback subframe is the N+Kth subframe.
  • the uplink feedback subframe parameter K in this embodiment may be agreed by the network side and the UE in advance, that is, the value of K is standardized.
  • the K value can be omitted and sent to the UE.
  • the corresponding uplink feedback subframe parameter K of the network side and the terminal UE is directly specified in the communication standard protocol.
  • the network side is not required to notify the UE by signaling. It is.
  • the physical resources in the uplink subframe are used for the UE to feed back the MBMS, and the physical resource allocation in the uplink feedback subframe is also required.
  • the physical downlink control channel Physical Downlink Control
  • PDCCH notifies the UE of the uplink grant signaling (Uplink grant) of the uplink subframe.
  • the uplink grant signaling is used to describe which physical resources in the uplink subframe are the uplink feedback for the MBMS to be counted, and the physical resource information used for the uplink feedback is used as the uplink grant information.
  • the uplink authorization information in the uplink authorization signaling may also be sent in a statistical message, or may be determined in a predetermined manner to determine which physical resources in the subframe are used for feedback of the MBMS.
  • a plurality of physical resources may be agreed in the uplink subframe as a physical resource for the MBMS to perform feedback, that is, after the uplink subframe that is fed back is determined by the foregoing manner, the UE does not need to be notified by signaling to the subframe.
  • Those physical resources are used for MBMS uplink feedback, UE and network
  • the manner of allocating physical resources in the sub-frame may be used to allocate the same physical resource to multiple MBMSs.
  • the uplink feedback sequence may be used to distinguish UE feedback for different MBMSs.
  • the network side distinguishes the feedback of the UE for different MBMSs according to the feedback physical resource location.
  • the uplink authorization information is not agreed in advance, the information may be sent by using the following two methods: First, the uplink authorization information (referred to as uplink authorization information, which is actually indicating the allocated uplink subframe) Which physical resources are used for MBMS feedback) are carried in statistical messages
  • the uplink grant information can be simplified.
  • the uplink authorization information in the LTE protocol may be different, and the resource allocation information in the existing uplink authorization information may be used as the uplink authorization information in the embodiment, or the uplink authorization information in the LTE protocol may be directly used. Some information unrelated to MBMS feedback can be used as invalid information.
  • the UE detects the radio network Temporary Identifier (RNTI) identifier in the PDCCH (the specific identification process and 5.3.3.2 of the 36.212 protocol describes the same) uplink grant information for MBMS feedback.
  • RNTI radio network Temporary Identifier
  • the UE receives and parses data in one subframe, and requires about 3 to 4 subframes. That is, the sending subframe of the statistic message is N, and then the PDCCH in the downlink subframe that is greater than or equal to N+4 is used to retrieve the uplink grant information used for the MBMS feedback by the pre-agreed RNTI identifier, and the UE retrieves the RNTI identifier.
  • the subframe of the uplink grant information is denoted as M, and then the UE transmits the feedback information of the MBMS in an uplink subframe greater than or equal to M+4.
  • the subframe information indicating the uplink feedback and/or the physical resource information for feedback in the uplink subframe in the present invention may be agreed in advance, and then the signaling overhead is omitted.
  • Embodiment 2 A method for allocating a plurality of consecutive uplink subframes for a plurality of MBMSs
  • the network side allocates a plurality of consecutive uplink subframes for a plurality of MBMSs, and allocates physical resources in the consecutive plurality of uplink subframes.
  • the downlink subframe in which the network side sends the statistics message is recorded as N. (If the statistical message data volume is large, and multiple downlink subframes are used to send statistics messages, then the last downlink subframe is denoted as N), which is indicated by the parameter K.
  • the starting subframe of the uplink feedback subframe of the MBMS As shown in FIG.
  • the parameter K in the embodiment 2 is described as the starting subframe position of the uplink subframe allocated by the MBMS service, that is, consecutive subframes starting from the N+K subframes are used for uplink feedback. frame.
  • the consecutive multiple uplink subframes are regarded as one overall uplink subframe, it may be regarded as a special case of Embodiment 1.
  • the specific number N c of consecutive consecutive uplink subframes may be previously agreed to a fixed value, for example, fixed to three uplink subframes, so that the specific consecutive number N c is not configured, and no signaling is required.
  • N c is not previously agreed fixed value, the specific needs of the number of consecutive N c as a parameter is also sent to the UE. If the consecutive subframe number parameter is not sent, it may be implied that only one uplink subframe is allocated or a fixed number of consecutive uplink subframes are allocated by default. For the method of allocating a plurality of consecutive uplink subframes, it may be further agreed that the physical resources allocated for the same uplink for the same MBMS in each uplink subframe are the same, or are allocated for uplink in each uplink subframe. The physical resources of the feedback are the same. This only requires the network side to configure and send an uplink grant information to describe the physical resource information for the MBMS feedback in the multiple uplink subframes.
  • each uplink subframe is used for feedback of one MBMS, and one or more physical resources for uplink feedback are allocated to its corresponding MBMS in each uplink subframe.
  • an uplink subframe may be allocated to each MBMS that needs to be counted for the UE to send uplink feedback information, and may be applied to the network side to allocate uplink subframes for multiple MBMSs at a time. If the network side needs to allocate uplink subframes for the three MBMSs for the UE to send uplink feedback information, and each MBMS allocates only one uplink subframe, the multiple consecutive allocation manners described above are used.
  • the parameter K and the number of consecutive uplink subframes N c are used for allocation.
  • the parameter K can be agreed in advance, for example, the agreement is 4, and the number of consecutive uplink subframes N c can also be implied.
  • each successive uplink subframe corresponds to uplink feedback for one MBMS.
  • Embodiment 3 A method for allocating multiple discrete uplink subframes for multiple MBMSs It is assumed that the network side allocates multiple discrete uplink subframes for multiple MBMSs for uplink feedback of MBMS.
  • the discrete manner of the discrete uplink subframes is described as a pattern, which may be agreed in advance. For example, in the discrete pattern shown in FIG. 3, three discrete uplink subframes are allocated, and three uplink subframe intervals are one. (In this embodiment, the number of subframe intervals between the allocated uplink subframes is used as an uplink subframe. Frame interval parameter) Uplink subframes.
  • the parameter K describes the position of the first uplink subframe in the three discrete uplink subframes, or K describes the first uplink subframe of the pattern, and the remaining uplink subframes follow the agreed pattern ( Or it can be said that it is an agreed interval) to launch in order.
  • the position of the second uplink subframe may be obtained by adding the row subframe interval again, and so on.
  • the resource allocation mode requires parameters K (initial subframe start position), uplink subframe number N d , and uplink subframe interval three parameters to determine all uplink subframes used for the MBMS. Of course, these parameters may also be used. In advance, at least one of the above three parameters is included.
  • the physical resources of the uplink feedback for the MBMS in the uplink subframe may be the same, or the physical resources in the subframe may be independently configured for each uplink subframe.
  • each uplink subframe is used for feedback of one MBMS, and one or more physical resources for uplink feedback are allocated to its corresponding MBMS in each uplink subframe.
  • an uplink subframe may be allocated to each MBMS that needs to be counted for the UE to send uplink feedback information, and may be applied to the network side to allocate uplink subframes for multiple MBMSs at a time.
  • the network side needs to allocate uplink subframes for 3 MBMSs for the UE to send uplink feedback information, and each MBMS allocates only one uplink subframe, A plurality of discrete allocation methods as described.
  • the parameter K the uplink subframe interval N l the number of uplink subframes N d , and three parameters are used for allocation.
  • the parameter K can be agreed in advance, for example, the agreement is 4, the uplink subframe.
  • the number N d may also be implied, that is, equal to the number of MBMSs that need to be statistically fed back in the statistics message sent by the network side, and the uplink subframe interval may also be agreed, for example, the agreement is 4, which can save overhead.
  • these three parameters can also be configured in whole or in part by signaling.
  • the three MBMSs respectively correspond to the first, second, and third uplink subframes for respective feedback.
  • the physical resource allocation in the uplink subframe may be performed by using the physical resource allocation manner in Embodiment 1. In this special case, each discrete uplink subframe corresponds to uplink feedback for one MBMS.
  • Embodiment 4 Mode for Assigning One Uplink Subframe to Each MBMS This embodiment describes a case where different uplink feedback resources are allocated to MBMSs that need feedback statistics for the network side.
  • the downlink subframe in which the downlink information message is sent by the network side is recorded as N (if there are multiple downlink subframes used to send the statistics message, the last downlink subframe is recorded as N), and is indicated by the parameter K.
  • each K has its own uplink subframe information for uplink feedback. See Figure 1 for the range and meaning of K.
  • the K values assigned to the two services are 4 and 8, and each service is assigned only one uplink subframe.
  • the physical resource resource allocation within the subframe is shown in Embodiment 1.
  • the values of K of the two services are the same, then it is further possible to allocate different physical resources in the subframe.
  • Embodiment 5 A method for allocating multiple uplink subframes for one MBMS, using user grouping Feedback
  • This embodiment describes a method for allocating a plurality of different uplink feedback subframes or physical resources and a UE packet for uplink feedback for one MBMS.
  • the network side allocates multiple uplink subframes for the MBMS that needs to perform uplink feedback statistics. There is only one uplink feedback resource for the MBMS in each subframe, or multiple different physical resources in one uplink subframe for uplink feedback. It is assumed that four different uplink subframes are allocated to the MBMS, and the physical resources used for uplink feedback in each subframe may be the same, or may be different. If the same, the signaling overhead may be reduced. If different, the system resource allocation may be improved. Flexibility.
  • the method of allocating a plurality of uplink subframes in the foregoing Embodiment 3 may be used, but only one MBMS is used at this time, that is, one frame includes four subframe patterns, and four uplink subframes may be continuous or discrete, K Used to indicate the first uplink subframe of the pattern.
  • the K value is 4
  • the uplink subframe interval in this embodiment, the number difference between the allocated subframes is used as the uplink subframe interval parameter
  • a total of 4 uplink subframes is 4
  • the UE that needs to perform the feedback calculates the hop according to the stipulated rule, and the number of the group is the same as the allocated uplink physical resource, and each group of UEs performs uplink feedback on the corresponding one uplink physical resource. In this embodiment, it is divided into 4 groups because there are 4 different uplink physical resources.
  • the UE of each group sends uplink feedback information for the MBMS on an uplink subframe physical resource corresponding to the foregoing group.
  • the physics used for uplink feedback in the subframe here
  • Value Ng indicates the number of groups to be required, and offset indicates the modulus value.
  • the UE after receiving the statistics message, if the UE is receiving the MBMS, the UE is a UE that needs to perform feedback, and the UE must first calculate its own group information according to its own UE ID, and then determine where it is based on the group information. Uplink feedback is performed in the uplink physical resource of one subframe. In this way, the feedback statistics for the MBMS are sent by the UEs that need to be fed back, and each group sends uplink feedback information, so that the network side is on the four allocations. The UE can detect that there is UE feedback information (either by detecting information energy on the uplink resource, or by receiving data for decoding processing, etc.), and then the network side can know that at least four UEs are receiving the MBMS.
  • UE feedback information either by detecting information energy on the uplink resource, or by receiving data for decoding processing, etc.
  • the network side may also know that at least three UEs are receiving the MBMS. Thus, as the number of packets increases, the network side can approximately know the number of UEs that receive the MBMS.
  • Embodiment 6 An MBMS allocates an uplink subframe, and the physical resources in the subframe are fed back by the user grouping mode. It is assumed that the network side allocates only one uplink subframe for one MBMS, if there are multiple different physical resources in the subframe for uplink feedback. For example, reference may be made to the manner of Embodiment 5, that is, different physical resources in one uplink subframe may be corresponding to multiple uplink subframes. Specifically, the user may be grouped, and the user equipment in each group uses the physical resources corresponding to the packet in the subframe to perform uplink feedback. In the foregoing embodiments 1 to 6, the user packet feedback manners of the embodiments 5 and 6 can be applied to the uplink subframe and the physical resource allocation manner in the embodiments.
  • Embodiment 5 and Embodiment 6 provide a preferred scheme for UE packet feedback.
  • the basic idea of packet feedback is to group according to the number of physical resources that can perform uplink feedback, and then each group of UEs uses one uplink feedback physical resource. Uplink feedback.
  • the present invention can provide flexible MBMS uplink physical resource allocation, and the signaling overhead is very small by prior agreement or implied.
  • the method of the UE packet feedback is also used in combination with the uplink feedback resource allocation mode, and the UE side can learn about the UE that is receiving the statistical MBMS by using the user packet feedback mode of the physical resource in the uplink subframe or the subframe. Order of magnitude information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé pour une allocation de ressources de liaison montante et une rétroaction de service de diffusion multidiffusion multimédia (MBMS). Le procédé comprend l'allocation par un côté réseau de sous-trames de liaison montante et de ressources physiques configurées dans les sous-trames de liaison montante pour une rétroaction de liaison montante pour le MBMS, et la notification par le côté réseau des informations d'indication de sous-trame de liaison montante et/ou des informations des ressources physiques dans les sous-trames de liaison montante à un équipement utilisateur (UE) d'une manière de stipulation, implication ou indication de signalisation. La présente invention porte également sur un système pour une allocation de ressources de liaison montante et une rétroaction de MBMS. Le surdébit des signalisations de la présente invention est très bas.
PCT/CN2011/073405 2010-05-28 2011-04-27 Procédé et système pour une allocation de ressources de liaison montante et une rétroaction de diffusion multidiffusion multimédia WO2011147246A1 (fr)

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