WO2011038668A1 - 处理子帧的方法和设备 - Google Patents

处理子帧的方法和设备 Download PDF

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Publication number
WO2011038668A1
WO2011038668A1 PCT/CN2010/077371 CN2010077371W WO2011038668A1 WO 2011038668 A1 WO2011038668 A1 WO 2011038668A1 CN 2010077371 W CN2010077371 W CN 2010077371W WO 2011038668 A1 WO2011038668 A1 WO 2011038668A1
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WIPO (PCT)
Prior art keywords
dynamic scheduling
mbms data
subframe
base station
scheduling period
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PCT/CN2010/077371
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English (en)
French (fr)
Inventor
黄曲芳
刘文济
曾清海
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华为技术有限公司
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43825569&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2011038668(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP10819897.9A priority Critical patent/EP2472913B1/en
Priority to ES10819897.9T priority patent/ES2559810T3/es
Publication of WO2011038668A1 publication Critical patent/WO2011038668A1/zh
Priority to US13/433,876 priority patent/US8811256B2/en
Priority to US14/321,550 priority patent/US9838851B2/en
Priority to US15/798,651 priority patent/US10390185B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services

Definitions

  • a Multimedia Broadcast Multicast Service can be transmitted in a Multimedia Broadcast Multicast Network (MBSFN) mode.
  • MMS Multimedia Broadcast Multicast Network
  • a plurality of base stations transmit radio signals including the same MBMS data from a plurality of cells using the same frequency at the same time.
  • the area covered by the multiple eNBs that transmit MBMS data in the MBSFN mode may be referred to as an MBSFN area, and each user equipment (User Equipment, UE) in the MBSFN area may consider that only one transmitter is transmitting a wireless signal. , thereby achieving the reception of MBMS data.
  • UE User Equipment
  • the data content transmitted by the eNB in the MBSFN area is the same, and the physical resources used are the same, that is, the content of each eNB is synchronized.
  • the core network device Multicast Multicast Service Center (BM-SC) side and the eNB side respectively set a synchronization (synchronization, SYNC) entity.
  • the SYNC entity on the BS-SC side sets a time stamp for each MBMS packet and provides it to all eNBs in the MBSFN area.
  • the BM-SC can include multiple MBMSs in one synchronization sequence. data pack.
  • the SYNC entity on the BM-SC side sets the same timestamp for the MBMS data packet in a synchronization sequence, and sends a Type 0 control packet, ie, a TypeO protocol data unit (Protocol Data Unit) when the BM-SC transmits the synchronization sequence.
  • PDU a TypeO protocol data unit
  • the typeO PDU is used to notify the eNB that the current synchronization sequence has been transmitted.
  • the SYNC entity on the BM-SC side will send a typeO PDU group instead of just sending a typeO PDU.
  • the typeO PDU group here is composed of all typeO PDUs that are repeatedly transmitted and have the same content. For example, when a synchronization sequence is sent, the same typeO PDU is sent three times in succession.
  • the three typeO PDUs are a typeO PDU group.
  • the eNB may determine the timing at which the BM-SC starts to send the synchronization sequence according to the timestamp obtained by the SYNC entity on the eNB side, and determine that the synchronization sequence is received according to the typO PDU. Then, the eNB is based on the received The corresponding timestamp of the MBMS packet is sent out of the received MBMS packet.
  • each eNB in the MBSFN area may generate the same dynamic scheduling information (Dynamic).
  • Schedule information, DSI implements the same dynamic scheduling for the same MBMS packet. For example, the eNB has buffered all MBMS packets that will be sent within the DSP when it is turned on.
  • the eNB determines the transmission timing of each MBMS data packet, and generates a corresponding DSI of the DSP to indicate the scheduling situation of the DSP, for example, the start position of the data packet of different services in the DSP.
  • the eNB transmits the DSI of the corresponding transport channel in the first MBSFN subframe of the multicast channel (MCH) in the DSP, and transmits each data packet according to the scheduling result.
  • the receiving end UE can receive the DSI, and can learn the scheduling situation of the eNB according to the DSI, so as to select the timing at which the eNB sends data of interest to the UE to receive data.
  • the air interface resources of the MBSFN service are reserved in advance in a semi-static manner, and the subframe reserved for transmitting the MBSN data is called an MBSFN subframe.
  • MCS modulation and coding schemes
  • each eNB performs an air interface transmission scheduling for MBMS data. When scheduling, the eNB only schedules the MBSFN data with the timestamp before the DSP start time. Typically, the eNB schedules corresponding MBSFN data for one DSP after the timestamp.
  • the transmission between the BS-SC and the eNB adopts an IP mode, which may cause loss of MBMS data packets or typeO PDUs. If an eNB in the MBSFN area cannot normally receive at least two consecutive MBMS data packets in a synchronization sequence or all typeO PDUs indicating that one synchronization sequence has been transmitted, the eNB will generate an erroneous DSI, resulting in other eNBs. Interference, and may cause an error in the reception of the UE. Summary of the invention
  • Embodiments of the present invention provide a method and an apparatus for processing a subframe.
  • a method of processing a subframe comprising:
  • the base station If the packet that is not received by the base station includes: at least two consecutive multimedia broadcast multicast service MBMS data packets that the base station will schedule in a dynamic scheduling period, the base station is configured to send, corresponding to the dynamic scheduling period.
  • the subframe of the dynamic scheduling information is empty.
  • another method of processing a subframe comprising: If the base station does not receive the type 0 control packet group, the subframe used by the base station to send the dynamic scheduling information corresponding to the dynamic scheduling period is empty, where the dynamic scheduling period is used to send the type 0 control packet group correspondingly.
  • MBMS packet MBMS packet.
  • a device for processing a subframe comprising:
  • a first receiving unit configured to determine whether the unreceived packet meets the first condition: including at least two consecutive multimedia broadcast multicast service MBMS data packets that the first sending unit will schedule in a dynamic scheduling period;
  • a sending unit configured to: when the determination result of the first receiving unit is YES, set a subframe for transmitting dynamic scheduling information corresponding to the dynamic scheduling period to be empty.
  • another apparatus for processing a subframe comprising:
  • a second receiving unit configured to determine that the type 0 control packet group is not received
  • a second sending unit configured to: when the determining result of the second receiving unit is YES, set a subframe for transmitting dynamic scheduling information corresponding to a dynamic scheduling period, where the dynamic scheduling period is used for sending Type 0 controls the corresponding MBMS packet of the packet group.
  • FIG. 1 is a schematic flowchart of a method for processing a subframe according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a synchronization sequence sent by a BM-SC according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for processing a subframe according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of another synchronization sequence sent by a BM-SC according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an apparatus for processing a subframe according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of another apparatus for processing a subframe according to an embodiment of the present invention.
  • the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, instead of All embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • An embodiment of the present invention provides a method for processing a subframe.
  • the packet that the base station does not receive includes: at least two consecutive MBMS data packets that the base station will schedule in a dynamic scheduling period DSP,
  • the subframe used by the base station to send the dynamic scheduling information corresponding to the dynamic scheduling period is empty, so as to prevent the eNB from sending an erroneous DSI, and solving the problem that the eNB generates an erroneous DSI, causing interference to other eNBs and erroneous reception of the UE.
  • another embodiment of the present invention provides a method for processing a subframe, where an eNB is located in an access network, a BM-SC is located in a core network, and a SYNC entity on a BM-SC side may be located in a core network, and A separate entity capable of communicating with the BM-SC or a portion of the independent entity may also be a unit within the BM-SC device.
  • the method includes the following steps.
  • Step 110 The BM-SC sends an MBMS data packet to the eNB.
  • the BM-SC sends a synchronization sequence to the eNB, the synchronization sequence comprising a plurality of MBMS data packets.
  • MBMS packets in a synchronization sequence belong to the same MBMS service.
  • the SYNC entity on the BM-SC side sets the same timestamp for each MBMS packet in the synchronization sequence, and transmits the typeO PDU after the BM-SC has transmitted all the MBMS packets in the synchronization sequence.
  • header information of the foregoing MBMS data packet may include the accumulated number of bytes (Total Number Of
  • the header information of the MBMS data packet may further include a Total Number Of Packet, which is used to indicate the total number of data packets sent by the data source in a certain period of time.
  • the data source here refers to the BM-SC in this embodiment.
  • the accumulated byte number information in the header of the packet is 100 bytes, 150 bytes, 300 bytes, and 400 bytes, in order.
  • the header information of A, B, C, and D also includes the accumulated packet number information (not shown in the drawing), which are 1, 2, 3, and 4 in order.
  • the cumulative number of packets in the D header indicates that the BM-SC including D and its previous MBMS packet has accumulated 4 packets.
  • Step 120 The eNB receives the MBMS data packet sent by the BM-SC, and determines whether the following occurs: at least two consecutive MBMS data packets to be scheduled within one DSP are lost. If yes, go to step 130, otherwise go to 140.
  • the case where the above eNB determines whether it occurs or not can also be described as: at least two scheduled to be scheduled within one DSP Successive MBMS packets do not arrive at the eNB, ie are not received by the eNB.
  • the eNB may determine, according to the SYNC header information of the received MBMS data packet, whether consecutive packet loss occurs, and whether consecutive packet loss should be scheduled in the same dynamic scheduling period.
  • the eNB can be implemented by using an existing technical solution.
  • the starting time of DSP1 and DSP2, DSP1 is ⁇ , and the starting time of DSP2 after DSP1 is ⁇ 2. Since each MBMS packet shown in Fig. 2 is included in the same synchronization sequence, that is, the time stamp of each MBMS packet is the same, assuming the time T0 indicated by the time stamp. Then, in step 120, if the eNB determines that the TO is located between T1 and T2, that is, after ⁇ and before T2, the eNB determines that MBMS data packets A, B, C, and D should be scheduled within DSP2.
  • the eNB can buffer A and D.
  • the eNB can also determine that there are two MBMS data with the accumulated number of packets in the header between 2 and 3 between A and D. package.
  • the eNB can determine that two consecutive MBMS data packets (B and C) have been lost. It should be noted here that the eNB can only determine the number of lost data packets and the number of lost data packets, and cannot determine the length of each lost data packet. Therefore, if the eNB estimates each MBMS according to the existing technical solution. The length of the data packet, and the DSI is generated, the DSI may be the wrong DSI, which is different from the DSI generated by other eNBs in other MBSFN areas, thereby causing interference to other eNBs, and may further cause the UE to receive data incorrectly or even fail. Received data.
  • the eNB determines that consecutive packet loss occurs according to the SYNC header information of the received MBMS packet, and the unreceived MBMS packet should be scheduled within one DSP, and therefore, the eNB performs step 130.
  • Step 130 The subframe used by the eNB to send the dynamic scheduling information DSI corresponding to the dynamic scheduling period DSP is empty.
  • the eNB remains silent at the subframe in which the DSI corresponding to the DSP should be transmitted. For another example, the eNB first determines whether a complete DSI corresponding to the DSP can be generated. If not, the eNB remains silent in a subframe in which the DSI corresponding to the DSP should be transmitted.
  • the subframe used by the eNB to send the DSI corresponding to the DSP is empty, and may also be described as follows: The eNB does not send any content when the subframe including the DSI should be sent, where the DSI that should be generated is used. Indicating eNB How to dynamically schedule the MBMS data to be sent in the DSP.
  • a subframe in which a DSI corresponding to a DSP should be transmitted refers to a certain subframe X in the DSP (such as the first subframe of the DSP). If the eNB generates the DSI, the eNB will send the DSI in the subframe X; and the eNB in the embodiment of the present invention determines that the unreceived packet meets the predetermined condition (for example, step 120 in this embodiment), and The DSI is not generated, so the eNB remains silent in this subframe X.
  • the eNB may send an MBMS data packet in the DSP. Specifically, if there are other MBMS data packets that the eNB has received that will be scheduled within the DSP, the eNB may send the other MBMS data packets through other subframes in the DSP.
  • the subframe in which the DSI corresponding to the DSP should be sent is the first subframe of the DSP, the other subframes may be after the subframe in which the DSI corresponding to the DSP should be sent; otherwise, the other sub The frame may be before or after the subframe in which the DSI corresponding to the DSP should be transmitted.
  • the other MBMS data packet may include: a time that is sent by the BM-SC to be earlier than the foregoing determining that the lost consecutive MBMS data packet is sent by the BM-SC, and belongs to the same service as the foregoing determined continuous MBMS data packet.
  • the data packets belong to different services, but the time sent by the BM-SC may be no earlier than the time determined by the BM-SC to determine the loss of consecutive MBMS data packets.
  • the eNB has received the MBMS data packet A in step 120, and the eNB can learn from the header information of the received MBMS data packet that the BM-SC sends the A time earlier than the lost continuous data packet ( Refers to the sending time of B and C). In addition, the eNB also receives D, but the BM-SC sends D later than the lost continuous packet transmission time. Therefore, in the DSP, the eNB can transmit the MBMS packet A in the subframe after the null subframe in which the DSI should be transmitted.
  • the eNB Since the eNB can only determine the number and total length of lost data packets and cannot determine the length of each lost data packet (referred to as B and C), the eNB cannot determine the location of each lost packet, that is, It is not possible to determine the sending position of the D where the sending position is ranked after the lost packet. Therefore, even if the eNB receives the MBMS packet D, it will not transmit D.
  • the UE does not receive the corresponding DSP.
  • the DSI can read all the contents of the DSP, then the UE can read MBMS packet A. It can be seen that the method provided in this embodiment can enable the UE to receive more data, so that the data transmission efficiency of the eNB is higher than that of the eNB that does not send the data packet at all or sends the wrong DSI.
  • the eNB may send the remaining MBMS data packet in the DSP.
  • the sub-frame remains silent.
  • the subframes constituting the DSP are the transport channel MCH subframes reserved by the eNB for transmitting the MBMS data packet, and the eNB remains silent in the remaining subframes of the DSP, and the eNB is used in the remaining subframes. No content is sent on the MCH channel that sends the MBMS packet.
  • the eNB can transmit non-MBMS data packets in the remaining subframes, and these non-MBMS data packets occupy non-MCH channels.
  • the eNB may use a lower power to send unicast data packets in the remaining subframes.
  • the unicast data packets are carried on a dedicated channel (DTCH), and the occupied transport channel is a downlink shared channel (Downl ink). Shared channel , DL_SCH).
  • Step 140 The eNB generates and sends a DSI corresponding to the DSP.
  • the eNB in this step can implement the DSI generation and transmission by referring to the existing technical solution, and send the received MBMS data packet after transmitting the subframe including the DSI.
  • the base station in this embodiment may first determine whether the unreceived packet meets the predetermined condition, for example, whether to include at least two consecutive MBMS data packets that the eNB will schedule in a dynamic scheduling period DSP, if the predetermined condition is met, Then, the subframe used by the base station to send the DS I corresponding to the DSP is empty, so as to prevent the eNB from sending an erroneous DSI, and solve the problem that the eNB generates an erroneous DSI, causing interference to other eNBs and erroneous reception of the UE.
  • the predetermined condition for example, whether to include at least two consecutive MBMS data packets that the eNB will schedule in a dynamic scheduling period DSP.
  • a further embodiment of the present invention provides a method for processing a subframe, in which, if a base station does not receive a Type 0 control packet group, that is, a packet that the base station does not receive includes a Type 0 control packet group, the base station is used for The subframe in which the dynamic scheduling information corresponding to the dynamic scheduling period is sent is empty, where the dynamic scheduling period is used to send the MBMS data packet corresponding to the type 0 control packet group.
  • the method can prevent the base station from transmitting an erroneous DSI, and solves the problem that the base station generates an error DSI, causing interference to other base stations and erroneous reception of the UE.
  • another embodiment of the present invention provides a method for processing a subframe, where an eNB is located in an access network, a BM-SC is located in a core network, and a SYNC entity on a BM-SC side may be located in a core network. And an independent entity capable of communicating with the BM-SC or a part of the independent entity, or a unit inside the BM-SC device.
  • the method includes the following steps.
  • Step 310 The BM-SC sends a synchronization sequence consisting of MBMS data packets, and its corresponding typeO PDU group to the eNB.
  • the BM-SC sends four synchronization sequences E, F, G, and H to the eNB.
  • Each synchronization sequence includes several MBMS data packets, and each synchronization sequence includes the same number of MBMS data packets. different.
  • the MBMS data packet in the same synchronization sequence belongs to the same MBMS service, or is not specifically limited to belong to multiple MBMS services, and it is not specifically limited whether the MBMS data packet in a synchronization sequence is empty. .
  • the MBMS packet in the synchronization sequence G is an empty packet, or the synchronization sequence G does not contain any MBMS data.
  • the SYNC entity on the BM-SC side sets a timestamp for each MBMS data packet in each synchronization sequence, and after the BM-SC sends all the MBMS data packets in one synchronization sequence, the transmission corresponds to the synchronization sequence.
  • the typeO PDU group, each typeO PDU group corresponding to the synchronization sequence may include a plurality of typeO PDUs having the same content and possibly having the same time stamp as the MBMS data packets in the corresponding synchronization sequence.
  • the typeO PDUs repeatedly transmitted by the BM-SC can form a typeO PDU group.
  • the corresponding typeO PDU group of each synchronization sequence includes three typeO PDUs, which are labeled as 1, 2, and 3 in the order of each typeO PDU group.
  • the typeO PDU in the typeO PDU group corresponding to the synchronization sequence E may have a timestamp, which is the same as the timestamp of the MBMS data in the synchronization sequence E, and is assumed to be Te.
  • the MBMS data packet in the synchronization sequence G is empty, that is, the G does not include the MBMS data, and the typeO PDU in the typeO PDU group corresponding to the synchronization sequence G may also have a timestamp, and the timestamp may be the time range of the synchronization sequence H.
  • Tg time stamps of the MBMS packets in the synchronization sequences F and H are indicated by Tf and Th, respectively.
  • the header information of each MBMS packet is not shown in the drawing.
  • header information of the foregoing MBMS data packet may further include the number of accumulated bytes and the number of accumulated data packets, which are similar to other embodiments of the present invention, and are not described herein again.
  • Step 320 The eNB receives the synchronization sequence sent by the BM-SC, and determines whether the following occurs: a typeO
  • the PDU group is lost. If yes, go to step 330, otherwise go to 340.
  • the case where the eNB determines whether it is present may also be described as: the typeO PDU group corresponding to the synchronization sequence that the eNB has received or the synchronization sequence that has not been received does not reach the eNB, that is, all typeO PDUs belonging to the type O group are not received by the eNB.
  • the synchronization sequence can include multiple MBMS data packets, the timestamps of the MBMS data packets in the same synchronization sequence are the same, that is, the multiple MBMSs included in the same synchronization sequence correspond to the same typeO PDU group. That is, each MBMS packet has a unique corresponding typeO PDU group.
  • the case where the eNB determines whether it is present may also be described as: the typeO PDU group corresponding to the MBMS data packet received by the eNB or the unreceived MBMS data packet does not reach the eNB, that is, all typeO PDUs belonging to the type O group are not. Received by the eNB.
  • the method for processing a subframe provided by this embodiment is applicable to a situation in which various eNBs can determine that a typeO PDU group is lost. Specifically, whether the corresponding synchronization sequence of a typeO PDU group is received by the eNB in whole or in part, or the corresponding synchronization sequence of the typeO PDU group is empty, if the typeO PDU group is lost, the eNB may according to the received MBMS data. The information about the packet, such as the timestamp, or the accumulated number of bytes, or the number of accumulated packets, determines that the type of the type PDU that should have arrived is not received. Therefore, the method for processing the subframe provided by this embodiment is applicable.
  • the two consecutive dynamic scheduling periods for scheduling the MBMS data packet by the eNB are DSP3 and DSP4, the starting time point of DSP3 is T3, and the starting time point of DSP4 after the DSP3 is ⁇ 4.
  • step 320 if the eNB determines that Te, Tf, Tg, and Th are both located between T3 and T4, that is, after ⁇ 3 and before ⁇ 4, the eNB determines that the synchronization sequence E should be in the DSP4.
  • the MBMS packets in F, G, and H are scheduled.
  • the eNB can determine the timestamp range of each synchronization sequence that should be received according to the pre-configuration. Therefore, if the eNB does not receive any typeO PDU whose timestamp is within a certain timestamp range determined by the eNB according to the pre-configuration, it may be determined that the typeO PDU group is lost. If the content of at least one of the four TypeO PDU groups is lost, the eNB performs step 330.
  • the eNB does not receive the first, second, and third typeO PDUs corresponding to F, even if the eNB receives the synchronization sequence F, it cannot determine when the data packet in the synchronization sequence F is available. Sent. If the eNB estimates the timing of the completion of the data packet transmission in the synchronization sequence according to the existing technical solution, the eNB will be inaccurate according to the estimation result.
  • the DSI generated by the eNB according to the estimation result will be an inaccurate DSI, and other The DSIs generated by other eNBs in the MBSFN area are different, causing interference to other eNBs, and may further cause the UE to receive data erroneously or even fail to receive data. Therefore, the eNB in this embodiment performs step 330 after determining that all content of the typeO PDU group corresponding to F is lost.
  • the eNB may determine the timing of completion of each synchronization sequence, and the eNB performs step 340.
  • Step 330 The subframe used by the eNB to send the dynamic scheduling information DSI corresponding to the dynamic scheduling period DSP is empty, where the DSP is used to send the MBMS data packet corresponding to the typeO PDU group that the eNB does not receive, or the synchronization sequence. MBMS packet in.
  • the eNB remains silent in a subframe in which DSI dynamic scheduling information corresponding to the DSP should be transmitted. For another example, the eNB first determines whether a complete DSI corresponding to the DSP can be generated. If not, the eNB remains silent in a subframe in which the DSI corresponding to the DSP should be transmitted.
  • the subframe used by the eNB to send the DSI corresponding to the DSP is empty, and may also be described as follows: The eNB does not send any content when the subframe including the DSI should be sent, where the DSI that should be generated is used. Instructs the eNB how to dynamically schedule the MBMS data to be sent within the DSP.
  • the eNB may send an MBMS data packet in the DSP. Specifically, if there are other MBMS data packets that the eNB has received and will be scheduled in the DSP, the eNB may send the other MBMS data packets through other subframes in the DSP.
  • the foregoing other MBMS data packet may include: by the core network device BM-SC The time of transmission is earlier than the end time of the corresponding synchronization sequence of the lost typeO PDU group; and/or, should be scheduled by the eNB before scheduling the service to which the corresponding MBMS packet of the lost typeO PDU group belongs, and with the lost typeO PDU
  • the corresponding MBMS data packets belong to MBMS data packets of different services.
  • the eNB has received the synchronization sequence E in step 320, and the MBMS data packet in E will be scheduled within the DSP.
  • the eNB can learn from the header information of the received MBMS data packet that the BM-SC sends E earlier than the transmission time of the synchronization sequence (refer to F) corresponding to the lost typeO PDU group. Therefore, in the DSP, in the subframe after the null subframe in which the DSI should be transmitted, the eNB can transmit the MBMS packet in the received synchronization sequence E.
  • the eNB may send the received synchronization sequence F after transmitting the MBMS data packet in E. MBMS packet in. Since the eNB cannot judge whether the F is transmitted or not, even if the eNB receives the synchronization sequences G and H transmitted by the BM-SC, the MME cannot determine the transmission position of the MBMS data packet in the G and the H, so the eNB does not transmit or receive. MBMS packets to G and H. Further, it is assumed that the eNB sends 5 by using the existing dynamic scheduling mode.
  • the UE does not receive the corresponding DSI of the DSP, and can read all the contents in the DSP. Then, the UE can read the MBMS data packet E. . It can be seen that the method provided in this embodiment can enable the UE to receive more data, so that the data transmission efficiency of the eNB is higher than that of the eNB.
  • the eNB may send the remaining MBMS data packet in the DSP, and may be in the remaining subframe. Keep silent.
  • the subframes constituting the DSP are the transport channel MCH subframes reserved by the eNB for transmitting the MBMS data packet, and the eNB remains silent in the remaining subframes of the DSP, and the eNB is used in the remaining subframes. No content is sent on the MCH channel of the MBMS packet corresponding to the lost typeO control packet group.
  • the eNB may send non-MBMS data packets in the remaining subframes, and the non-MBMS data packets occupy non-MCH channels.
  • the eNB may adopt lower power, and send unicast in the remaining subframes. Packets, these unicast packets are carried on the dedicated channel DTCH, and the occupied transport channel is DL-SCH.
  • Step 340 The eNB generates and sends a DSI corresponding to the DSP.
  • the eNB in this step can implement the DSI generation and transmission by referring to the existing technical solution, and send the received MBMS data packet after transmitting the subframe including the DSI.
  • the base station in this embodiment may first determine whether the unreceived packet meets a predetermined condition, for example, whether to include a typeO PDU group corresponding to one or some MBMS data packets, and if the predetermined condition is met, the base station is configured to send and The subframe of the DS I corresponding to the DSP is empty, so as to prevent the eNB from sending an erroneous DSI, and the eNB generates an error DSI.
  • a predetermined condition for example, whether to include a typeO PDU group corresponding to one or some MBMS data packets
  • the base station may first determine whether the unreceived packet meets the predetermined condition, that is, whether to include two consecutive MBMS data packets that the eNB will schedule in one DSP, and one or some MBMS data.
  • the corresponding typeO PDU group is included, and some or some MBMS data packets may be MBMS data packets that the eNB has received, or may be MBMS data packets that are not received by the eNB.
  • the base station is configured to send the subframe of the DSI corresponding to the DSP to be empty, thereby preventing the eNB from sending an erroneous DSI, and solving the problem that the eNB generates an erroneous DSI, causing interference to other eNBs and erroneous reception of the UE.
  • the base station determines whether the unreceived packet meets the predetermined condition in the embodiment, reference may be made to the foregoing embodiment of the present invention, and details are not described herein again.
  • the method for processing a subframe according to the foregoing embodiment of the present invention is described by taking an eNB as an access network device and a BM-SC as a core network device.
  • the embodiment of the present invention is not limited thereto.
  • the eNB in the foregoing embodiment may be replaced by a home base station (home NodeB, hNB), a micro cell base station, or another device located in the access network in a system such as LTE+, and the BM-SC may be replaced with another device located in the core network. .
  • an embodiment of the present invention further provides a device for processing a subframe, where the first device 50 can be used to implement the method for processing a subframe provided by the foregoing embodiment of the present invention.
  • the first device 50 includes a first receiving unit 510 and a first transmitting unit 520.
  • the first receiving unit 510 is configured to determine whether the unreceived packet meets the first condition: including at least two consecutive multimedia broadcast multicast service MBMS data packets that the first sending unit 520 will schedule in a dynamic scheduling period.
  • the first sending unit 520 is configured to: when the determination result of the first receiving unit 510 is YES, set a subframe for transmitting dynamic scheduling information corresponding to the dynamic scheduling period to be null.
  • the first sending unit 520 may set the subframe for transmitting the dynamic scheduling information corresponding to the dynamic scheduling period to be empty, and may refer to any one of the following cases: the first sending unit 520 should send the corresponding corresponding to the dynamic scheduling period.
  • the subframe of the dynamic scheduling information remains silent; or the first sending unit 520 determines whether the complete dynamic scheduling information corresponding to the dynamic scheduling period can be generated, and if not, the first sending unit 520 should send the dynamic scheduling period.
  • the subframe of the corresponding dynamic scheduling information remains silent.
  • the first receiving unit 510 may be configured to receive an MBMS data packet, and determine, according to the received MBSM data packet, whether the unreceived packet meets the first condition. For example, if the header information of the MBSM data packet received by the first receiving unit 510 includes the accumulated byte number and the accumulated data packet number, the first receiving unit 510 determines that the unreceived number is based on the accumulated byte number and the accumulated data packet number. Whether the package satisfies the first condition.
  • the first sending unit 520 will schedule the dynamic scheduling period.
  • other MBMS packets include the following Any one or more of: the MBMS data packet sent by the BM-SC is earlier than the time when the continuous MBMS data packet determined to be lost is sent by the BM-SC and belongs to the same service as the above-mentioned lost continuous MBMS data packet; Or, the eNB will perform MBMS data packets of other services scheduled before scheduling the above-mentioned service to which the lost continuous MBMS data packet belongs.
  • the other MBMS data packets belong to different services than the lost continuous MBMS data packets, but the time transmitted by the BM-SC may be no earlier than the time when the lost continuous MBMS data packets are determined to be transmitted by the BM-SC.
  • the other subframes may be after the subframe in which the DS I corresponding to the DSP should be sent; otherwise, the foregoing Other subframes may be before or after the subframe in which the DS I corresponding to the DSP should be transmitted.
  • the first sending unit 520 in this embodiment is further configured to: after the sending the other MBMS data packet, keep silent in the remaining subframes, where the remaining subframes include: the first sending unit 520 is in the dynamic In the scheduling period, after the other subframes, the subframe reserved for the transport channel of the service mapping to which the consecutive MBMS data packets belong.
  • the device provided in this embodiment may be a base station (such as an eNB) or other access network entity, such as a home base station (home node B, hNB) or a micro cell base station, or may be a unit located in a base station or other access network entity.
  • a base station such as an eNB
  • other access network entity such as a home base station (home node B, hNB) or a micro cell base station, or may be a unit located in a base station or other access network entity.
  • the device may first determine whether the unreceived packet meets the predetermined condition, for example, whether to include at least two consecutive MBMS data packets that the eNB will schedule in a dynamic scheduling period DSP, and if the predetermined condition is met, the device uses The subframe for transmitting the DSI corresponding to the DSP is empty, thereby preventing the device from transmitting an erroneous DSI, and solving the problem that the error DSI is generated to cause interference to other devices and the UE is erroneously received.
  • the predetermined condition for example, whether to include at least two consecutive MBMS data packets that the eNB will schedule in a dynamic scheduling period DSP
  • the embodiment of the present invention further provides another device for processing a subframe
  • the second device 60 can be used to implement the method for processing a subframe provided by the foregoing embodiment of the present invention.
  • the second device 60 includes a second receiving unit 610 and a second transmitting unit 620.
  • the second receiving unit 610 is configured to determine whether the type 0 control packet group is not received, that is, whether the unreceived packet meets the second condition: including the type 0 control packet group.
  • the second sending unit 620 is configured to: when the determining result of the second receiving unit 610 is YES, set a subframe for transmitting dynamic scheduling information corresponding to the dynamic scheduling period, where the dynamic scheduling period is used to send the foregoing Type 0 controls the corresponding MBMS packet of the packet.
  • the second sending unit 620 may be configured to send the subframe for transmitting the dynamic scheduling information corresponding to the dynamic scheduling period to be empty.
  • the second sending unit 620 should send the corresponding dynamic scheduling period.
  • the subframe of the dynamic scheduling information remains silent; or the second sending unit 620 determines whether the complete dynamic scheduling information corresponding to the dynamic scheduling period can be generated, and if not, the second sending unit 620 should send and dynamically adjust.
  • the subframe of the dynamic scheduling information corresponding to the degree period remains silent.
  • the second sending unit 620 is further configured to pass the foregoing.
  • the other subframes in the dynamic scheduling period transmit the other MBMS data packets described above.
  • the foregoing other MBMS data packet may include: an end time that is sent by the core network device BM-SC earlier than a corresponding synchronization sequence of the lost typeO PDU group; and/or, the typeO PDU that should be lost by the eNB in scheduling
  • the services to which the corresponding MBMS data packet belongs are scheduled before, and the MBMS data packets corresponding to the lost typeO PDU group belong to MBMS data packets of different services.
  • the other subframes may be after the subframe in which the DSI corresponding to the DSP should be sent; otherwise, the other sub The frame may be before or after the subframe in which the DSI corresponding to the DSP should be transmitted.
  • the second sending unit 620 is further configured to: after the sending the foregoing other MBMS data packet, keep silent in the remaining subframes, where the remaining subframes include: the foregoing base station in the dynamic scheduling period, in the other subframes Thereafter, the subframe reserved for the transport channel to which the MBMS packet corresponding to the type 0 control packet group belongs is reserved.
  • the Type 0 control packet group includes all Type 0 control packets that are repeatedly transmitted and have the same content.
  • the device provided in this embodiment may be a base station (such as an eNB) or another access network entity, such as a home base station (home node B, hNB) or a micro cell base station, or may be a unit located in a base station or other access network entity. .
  • the device may first determine whether the unreceived packet satisfies a predetermined condition, for example, whether a typeO PDU group corresponding to one or some MBMS data packets is included, and if the predetermined condition is met, the device is configured to send a corresponding to the DSP.
  • the subframe of the DSI is empty, so that the device does not send the wrong DSI, and solves the problem that the generated error DSI causes interference to other devices and the UE receives incorrectly.

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Description

处理子帧的雄和设备 本申请要求于 2009年 9月 29日提交中国专利局、 申请号为 200910110717. 0、发明 名称为 "处理子帧的方法和设备"的中国专利申请的优先权, 其全部内容通过引用结合 在本申请中。 技术领域 本发明涉及移动通信领域, 特别是涉及子帧的处理方法和设备。 发明背景 长期演进(LTE, Long Term Evolution)系统中, 多媒体广播组播业务(Multimedia Broadcast Multicast Service, MBMS ) 可以采用多媒体广播组播单频网 (Multimedia Broadcast multicast service Single Frequency Network, MBSFN) 模式传输, 艮卩多 个基站 (evolved Node B, eNB) 在同一时间采用同一频率, 从多个小区发射包括相同 的 MBMS数据的无线信号。上述通过 MBSFN模式传输 MBMS数据的多个 eNB所覆盖的区域 可以称为 MBSFN区域(MBSFN area),在该 MBSFN区域内的各用户设备(User Equipment, UE) 可以认为只有一个发射机在发射无线信号, 从而实现 MBMS数据的接收。
MBSFN区域内的 eNB所传输的数据内容是相同的, 采用的物理资源也是相同的, 即 各 eNB 的内容同步。 例如, 核心网设备多播组播服务中心 (Broadcast Multicast - Service Center, BM-SC) 侧和 eNB侧分别设置同步 ( synchronization, SYNC) 实体。 BS-SC侧的 SYNC实体为各 MBMS数据包设定时间戳 (Time Stamp) 并提供给 MBSFN区域 内所有的 eNB, 具体的, BM-SC可以在一个同步序列 (synchronization sequence ) 中 包括多个 MBMS数据包。 BM-SC侧的 SYNC实体为一个同步序列中的 MBMS数据包设定相同 的时间戳, 并在 BM-SC发送完该同步序列时, 发送类型 0控制包, 即 typeO协议数据单 元 (Protocol Data Unit , PDU), 以下简称 typeO PDU, 该 typeO PDU用于通知 eNB当 前的同步序列已发送完毕。 为提高可靠性, BM-SC侧的 SYNC实体将发送 typeO PDU组, 而不是仅仅发送一个 typeO PDU。 这里的 typeO PDU组是由所有被重复发送、 且内容相 同的 typeO PDU组成的。例如,在一个同步序列发送完毕时,连续发送 3次相同的 typeO PDU, 这 3个 typeO PDU即为一个 typeO PDU组。
eNB接收 MBMS数据时, 可以根据 eNB侧的 SYNC实体获知的时间戳确定 BM-SC开始 发送同步序列的时机, 根据 typO PDU确定同步序列接收完毕。 然后, eNB根据接收到的 MBMS数据包相应的时间戳, 将接收到的 MBMS数据包发送出去。
如果 MBSFN区域内的各 eNB在某个动态调度周期(Dynamic schedule period, DSP) 开始之前, 已缓存了将在该 DSP内发送的所有 MBMS数据包, 则各 eNB可以生成相同的 动态调度信息 (Dynamic schedule information, DSI ), 对相同的 MBMS数据包实现相 同的动态调度。例如, eNB在某 DSP开前时,已缓存了所有将在该 DSP内发送的所有 MBMS 数据包。 eNB确定各 MBMS数据包的发送时机, 并生成该 DSP相应的 DSI, 以指示该 DSP 的调度情况, 例如不同业务的数据包在该 DSP内的起始位置。 eNB在该 DSP内多播信道 (Multicast Channel , MCH) 的第一个 MBSFN子帧中发送对应传输信道的 DSI, 并根据 调度结果发送各数据包。接收端 UE可以接收 DSI,并根据 DSI可以获知 eNB的调度情况, 从而选择在 eNB发送 UE感兴趣的数据的时机去接收数据。
在演进阶段的 MBMS中, MBSFN业务的空口资源是采用半静态的方式提前预留的,被 预留用于发送 MBSN数据的子帧称作 MBSFN子帧。 为了实现不同 MBSFN业务的不同服务 质量 (Quality of Service, QoS) 要求, 演进阶段的 MBMS将 MBSFN业务映射到不同的 传输信道 MCH, 不同的 MCH通常采用不同的调制编码方式 (Modulation Coding Scheme, MCS), 以实现不同的 QoS。 不同的 MCH不共用同一个预留 MBSFN子帧。 为了减少调度开 销, eNB每一个 DSP对 MBMS数据进行一次空口发送调度。 eNB在调度时, 只调度时间戳 在对应 DSP开始时间之前的 MBSFN数据。 通常, eNB在时间戳之后的一个 DSP调度对应 MBSFN数据。
现有技术中, BS-SC与 eNB之间的传输采用 IP模式,可能造成 MBMS数据包或 typeO PDU丢失。 如果 MBSFN区域内的某个 eNB无法正常接收到一个同步序列中的至少两个连 续的 MBMS数据包或指示一个同步序列发送完毕的所有 typeO PDU, 则该 eNB将生成错误 的 DSI, 造成对其他 eNB的干扰, 并可能导致 UE的接收出现错误。 发明内容
本发明实施例提供处理子帧的方法和设备。
一方面, 提供一种处理子帧的方法, 该方法包括:
如果基站未接收到的包包括: 所述基站将在一个动态调度周期内进行调度的至少两 个连续的多媒体广播组播业务 MBMS数据包, 则所述基站用于发送与所述动态调度周期 对应的动态调度信息的子帧为空。
另一方面, 提供另一种处理子帧的方法, 该方法包括: 如果基站未接收到类型 0控制包组,所述基站用于发送与动态调度周期对应的动态 调度信息的子帧为空, 其中, 所述动态调度周期用于发送所述类型 0 控制包组相应的 MBMS数据包。
另一方面, 提供一种处理子帧的设备, 该设备包括:
第一接收单元, 用于确定未接收到的包是否满足第一条件: 包括第一发送单元将在 一个动态调度周期内进行调度的至少两个连续的多媒体广播组播业务 MBMS数据包; 第一发送单元, 用于在第一接收单元的确定结果为是时, 将用于发送与所述动态调 度周期对应的动态调度信息的子帧置为空。
另一方面, 提供另一种处理子帧的设备, 该设备包括:
第二接收单元, 用于确定未接收到类型 0控制包组;
第二发送单元, 用于在第二接收单元的确定结果为是时, 将用于发送与动态调度周 期对应的动态调度信息的子帧置为空, 其中, 所述动态调度周期用于发送所述类型 0控 制包组相应的 MBMS数据包。
本发明实施例中,接入网设备(如 eNB)发现连续的 MBMS数据包丢失和 /或 typeO PDU 组丢失时, 其发送 DSI的子帧可以为空, 从而避免 eNB发送错误的 DSI, 解决 eNB生成 错误 DSI导致对其他 eNB干扰和 UE错误接收的问题。 附图简要说明 图 1为本发明实施例提供的一种处理子帧的方法流程示意图;
图 2为本发明实施例中 BM-SC发送的一个同步序列示意图;
图 3为本发明实施例提供的另一种处理子帧的方法流程示意图;
图 4为本发明实施例中 BM-SC发送的另一个同步序列示意图;
图 5为本发明实施例提供的一种处理子帧的设备示意图;
图 6为本发明一个实施例提供的另一种处理子帧的设备示意图。 实施本发明的方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整 地描述, 显然, 所描述的实施例仅是本发明的一部分实施例, 而不是全部的实施例。 基 于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有 其他实施例, 都属于本发明保护的范围。 本发明一个实施例提供一种处理子帧的方法, 应用该方法, 如果基站未接收到的包 包括: 该基站将在一个动态调度周期 DSP内进行调度的至少两个连续的 MBMS数据包, 则该基站用于发送与该动态调度周期对应的动态调度信息的子帧为空, 从而避免 eNB发 送错误的 DSI, 解决 eNB生成错误 DSI导致对其他 eNB干扰和 UE错误接收的问题。
如图 1所示, 本发明另一个实施例提供一种处理子帧的方法, 其中, eNB位于接入 网, BM-SC位于核心网, BM-SC侧的 SYNC实体可以是位于核心网、 且能够与 BM-SC通信 的独立实体或该独立实体的一部份, 也可以是 BM-SC设备内部的一个单元。 该方法包括 如下步骤。
步骤 110、 BM-SC发送 MBMS数据包给 eNB。
例如, BM-SC将一个同步序列发送给 eNB, 该同步序列包括多个 MBMS数据包。 一般 来说, 一个同步序列中的 MBMS数据包属于同一个 MBMS业务, 当然, 也不排除一通同步 序列中的 MBMS数据包属于多个 MBMS业务的可能。 BM-SC侧的 SYNC实体为该同步序列中 的每个 MBMS数据包设置相同的时间戳, 并在 BM-SC发送完该同步序列中的所有 MBMS数 据包后, 发送 typeO PDU。
进一步的, 上述 MBMS 数据包的头部信息可以包括累计字节数 (Total Number Of
Octet ) 用于表示一定时间段内数据源发送的数据总量。 与现有技术类似的, 对一个业 务的数据来说, 该字段在一定时间内单调递增。 上述 MBMS数据包的头部信息还可以包 括累计数据包数 (Total Number Of Packet ) , 用于表示一定时间段内数据源发送的数 据包总量。 这里的数据源指本实施例中的 BM-SC。
以图 2为例, 假设 BM-SC发送给 eNB的四个连续的 MBMS数据包为 A、 B、 C和 D, 依 次长度为 100字节、 50字节、 150字节和 100字节, 对应的数据包头部中的累计字节数 信息依次为 100字节、 150字节、 300字节和 400字节。 比如, D头部中的累计字节数指 示包括 D及其之前的 MBMS数据包在内的字节数累计为 400字节(即 100 + 50 + 150 + 100 = 400)。 A、 B、 C和 D的头部信息还包括累计数据包数信息 (附图未示出), 依次为 1、 2、 3和 4。 比如, D头部中的累计数据包数指示包括 D及其之前的 MBMS数据包在内的 BM-SC已发送的数据包累计为 4个。
步骤 120、 eNB接收 BM-SC发送的 MBMS数据包, 并确定是否出现以下情况: 即将在 一个 DSP内进行调度的至少两个连续的 MBMS数据包丢失。如果是, 则执行步骤 130, 否 则执行 140。
上述 eNB确定是否出现的情况也可以描述为: 将在一个 DSP内进行调度的至少两个 连续的 MBMS数据包未到达 eNB, 即未被 eNB接收到。
例如, eNB可以根据已接收到的 MBMS数据包的 SYNC头部信息分别确定: 是否出现 连续丢包, 以及连续的丢包是否本应该在同一动态调度周期内进行调度。 其中, eNB可 以采用现有的技术方案来实现。
以图 2为例, 假设 eNB对 MBMS数据包进行调度的两个连续的动态调度周期分别为
DSP1和 DSP2, DSP1的起始时间点为 Π, 该 DSP1之后的 DSP2的起始时间点为 Τ2。 由于 图 2示出的各 MBMS数据包被包含在同一个同步序列中,即各 MBMS数据包的时间戳相同, 假设该时间戳指示的时间 T0。则在步骤 120中,如果 eNB判断出 TO位于 T1和 T2之间, 即在 Π之后且在 T2之前, 则 eNB确定应该在 DSP2内对 MBMS数据包 A、 B、 C和 D进行 调度。
进一步的, 假设 eNB仅接收到 A和 D, 则 eNB可以对 A和 D进行缓存。 eNB根据 A 头部的累计字节数 100、 D头部的累计字节数 400和 D的数据包长度 100, eNB可以确定 还有 400 - 100 - 100 = 200字节的 MBMS数据是 eNB本应该接收到, 但实际上未到达 eNB的丢失数据。 此外, 根据 A头部的累计数据包数 1和 D头部的累计数据包数 4, eNB 还可以确定 A和 D之间存在头部中的累计数据包数为 2和 3的两个 MBMS数据包。 通过 上述过程, eNB可以确定丢失了两个连续的 MBMS数据包 (B和 C)。 这里需要说明的是, eNB仅能够确定丢失了数据包, 以及丢失的数据包的数量, 而无法确定丢失的每个数据 包的长度, 因此, 如果 eNB根据现有的技术方案, 预估各 MBMS数据包的长度, 并生成 DSI , 则该 DSI可能为错误的 DSI, 与其他 MBSFN区域内的其他 eNB所生成的 DSI不同, 从而造成对其他 eNB的干扰,还可能进一步导致 UE错误接收数据甚至无法接收到数据。
通过上述过程, eNB根据已接收到的 MBMS数据包的 SYNC头部信息确定出现了连续 丢包, 以及未接收到的 MBMS数据包应该在一个 DSP内进行调度, 因此, eNB将执行步骤 130。
步骤 130、 eNB用于发送与该动态调度周期 DSP对应的动态调度信息 DSI的子帧为 空。
例如, eNB在应发送与该 DSP对应的 DSI的子帧保持静默(mute)。 又如, eNB先确 定能否生成与该 DSP对应的完整的 DSI, 如果否, eNB在应发送与该 DSP对应的 DSI的 子帧保持静默。
本步骤中, eNB用于发送与该 DSP对应的 DSI的子帧为空, 也可以描述为: eNB在 本应该发送包括 DSI的子帧时不发送任何内容, 其中, 本应该生成的 DSI用于指示 eNB 如何动态调度该 DSP内要发送的 MBMS数据。
需要说明的是, 本发明实施例中的 "应发送与 DSP对应的 DSI的子帧"是指 DSP中 的某一个子帧 X (比如 DSP的第 1个子帧)。 如果 eNB生成了 DSI, 那么 eNB将在这个子 帧 X中发送该 DSI ; 而本发明实施例中的 eNB在确定未接收到的包满足既定条件 (例如 本实施例中的步骤 120 ) 时, 并不会生成 DSI, 因此, eNB在该子帧 X保持静默。
本步骤中, eNB可以在该 DSP内发送 MBMS数据包。具体的, 如果存在 eNB已接收到 的、 将在该 DSP内进行调度的其他 MBMS数据包, 则 eNB可以通过该 DSP中的其他子帧 发送上述其他 MBMS数据包。 可选的, 如果应发送与该 DSP对应的 DSI的子帧是该 DSP 的第 1个子帧, 则上述其他子帧可以在应发送与该 DSP对应的 DSI的子帧之后; 否则, 上述其他子帧可以在应发送与该 DSP对应的 DSI的子帧之前或者之后。可选的,其他 MBMS 数据包可以包括: 由 BM-SC发送的时间早于上述确定丢失的连续 MBMS数据包由 BM-SC 发送的时间、 且与上述确定丢失的连续 MBMS数据包属于同一业务的 MBMS数据包; 和 / 或, eNB将在调度上述确定丢失的连续 MBMS数据包所属的业务之前进行调度的其他业务 的 MBMS数据包, 在后一种情况下, 其他 MBMS数据包与丢失的连续 MBMS数据包属于不 同业务, 但由 BM-SC发送的时间可以不早于上述确定丢失的连续 MBMS数据包由 BM-SC 发送的时间。
以图 2为例, eNB在步骤 120中已接收到 MBMS数据包 A, eNB可以根据已接收到的 MBMS数据包的头部信息获知, BM-SC发送 A的时间早于丢失的连续数据包 (指 B和 C) 的发送时间。 此外, eNB也接收到了 D, 但 BM-SC发送 D的时间晚于丢失的连续数据包 的发送时间。 因此, 在该 DSP内, 本应该发送 DSI的空子帧之后的子帧中, eNB可以发 送 MBMS数据包 A。 由于 eNB仅能够确定丢失的数据包的数量和总长度,而无法确定丢失 的每个数据包 (指 B和 C) 的长度, 因此, eNB无法确定丢失的每个数据包的发送位置, 也就无法确定发送位置排在丢失的数据包之后的 D的发送位置。 所以, 即使 eNB接收到 了 MBMS数据包 D, 也不会发送 D。
假设 eNB采用现有的动态调度方式发送 , 则相应的, UE在未接收到该 DSP相应的
DSI , 可以读取该 DSP内的全部内容,那么, UE可以读取到 MBMS数据包 A。可见, 与 eNB 完全不发送数据包或者发送错误的 DSI相比, 本实施例提供的方法可以使得 UE接收到 更多的数据, 使得 eNB的数据传输效率更高。
可选的, 假设该 DSP由本应该发送 DSI的子帧、 发送上述其他 MBMS数据包的其他 子帧和剩余子帧组成, 则 eNB在该 DSP内发送完上述其他 MBMS数据包后, 可以在剩余 子帧保持静默。 需要说明的是, 上述组成 DSP的子帧为 eNB为发送 MBMS数据包预留的 传输信道 MCH子帧, 则 eNB在该 DSP的剩余子帧保持静默指的是, eNB在剩余子帧中用 于发送 MBMS数据包的 MCH信道上不发送任何内容。
本领域技术人员可以理解的, eNB可以在上述剩余子帧中发送非 MBMS数据包,这些 非 MBMS数据包占用非 MCH信道。例如, eNB可以采用较低的功率, 在上述剩余子帧中发 送单播数据包, 这些单播数据包承载在专用信道 (Dedicated Traffic Channel , DTCH) , 占用的传输信道为下行共享信道 (Downl ink shared channel , DL_SCH)。
步骤 140、 eNB生成并发送该 DSP对应的 DSI。
本步骤中的 eNB可以参照现有的技术方案, 实现 DSI的生成和发送, 并在发送包含 DSI的子帧后, 发送已接收到的 MBMS数据包。
本实施例中的基站可以先确定未接收到的包是否满足既定条件, 例如, 是否包括该 eNB将在一个动态调度周期 DSP内进行调度的至少两个连续的 MBMS数据包,如果满足既 定条件, 则该基站用于发送与该 DSP对应的 DS I的子帧为空, 从而避免 eNB发送错误的 DSI, 解决 eNB生成错误 DSI导致对其他 eNB干扰和 UE错误接收的问题。
本发明的又一个实施例提供一种处理子帧的方法, 该方法中, 如果基站未接收到类 型 0控制包组, 即基站未接收到的包包括类型 0控制包组, 则该基站用于发送与动态调 度周期对应的动态调度信息的子帧为空, 其中, 上述动态调度周期用于发送与该类型 0 控制包组相应的 MBMS数据包。该方法可以避免基站发送错误的 DSI,解决基站生成错误 DSI导致对其他基站干扰和 UE错误接收的问题。
如图 3所示, 本发明的另一个实施例提供一种处理子帧的方法, 其中, eNB位于接 入网, BM-SC位于核心网, BM-SC侧的 SYNC实体可以是位于核心网、 且能够与 BM-SC通 信的独立实体或该独立实体的一部份, 也可以是 BM-SC设备内部的一个单元。 该方法包 括如下步骤。
步骤 310、 BM-SC发送由 MBMS数据包组成的同步序列, 及其相应的 typeO PDU组给 eNB。
以图 4为例, BM-SC发送给 eNB的 4个同步序列 E、 F、 G和 H, 每个同步序列分别 包括若干个 MBMS数据包, 各同步序列所包括的 MBMS数据包数量可以相同或不同。 本实 施例对同一个同步序列中的 MBMS数据包是属于同一个 MBMS业务的,还是属于多个 MBMS 业务的不做具体限定, 对一个同步序列中的 MBMS数据包是否为空也不做具体限定。 例 如,同步序列 G中的 MBMS数据包为空数据包,或者说同步序列 G不包含任何 MBMS数据。 本步骤中, BM-SC侧的 SYNC实体为各同步序列中的每个 MBMS数据包设置时间戳, 并在 BM-SC 发送完一个同步序列中的所有 MBMS 数据包后, 发送与该同步序列相应的 typeO PDU组,每个与同步序列相应的 typeO PDU组可以包括多个 typeO PDU,这些 typeO PDU 的内容相同, 并可能具有与其相应的同步序列中的 MBMS数据包相同的时间戳。 被 BM-SC重复发送的 typeO PDU可以形成一个 typeO PDU组。
以图 4为例,每个同步序列相应的 typeO PDU组包括 3个 typeO PDU,按照在各 typeO PDU组中的顺序标记为 1、 2和 3。可选的,与同步序列 E相应的 typeO PDU组中的 typeO PDU可以带有时间戳, 该时间戳与同步序列 E中的 MBMS数据的时间戳相同, 假设均为 Te。同步序列 G中的 MBMS数据包为空,即 G不包括 MBMS数据,与同步序列 G相应的 typeO PDU组中的 typeO PDU也可以带有时间戳, 该时间戳可以是该同步序列 H的时间范围的 某一取值, 假设为 Tg。 此外, 假设同步序列 F和 H中的 MBMS数据包的时间戳指示的时 间分别为 Tf和 Th。 各 MBMS数据包的头部信息未在附图中示出。
进一步的, 上述 MBMS数据包的头部信息还可以包括累计字节数和累计数据包数, 因与本发明其他实施例类似, 此处不再赘述。
步骤 320、 eNB接收 BM-SC发送的同步序列, 并确定是否出现以下情况: 一个 typeO
PDU组丢失。 如果是, 则执行步骤 330, 否则执行 340。
eNB确定是否出现的情况也可以描述为: 与 eNB已接收到的同步序列或者未接收到 的同步序列相应的 typeO PDU组未到达 eNB, 即属于该 typeO组的所有 typeO PDU都未 被 eNB接收到。 由于同步序列可以包括多个 MBMS数据包, 而同一个同步序列中的 MBMS 数据包的时间戳相同, 也就是说, 这些被包括在同一个同步序列中的多个 MBMS与同一 个 typeO PDU组对应, 即每一个 MBMS数据包都有唯一对应的 typeO PDU组。 因此, eNB 确定是否出现的情况也可以描述为:与 eNB已接收到的 MBMS数据包或者未接收到的 MBMS 数据包相应的 typeO PDU组未到达 eNB, 即属于该 typeO组的所有 typeO PDU都未被 eNB 接收到。
需要说明的是,本实施例提供的处理子帧的方法适用于各种 eNB可以确定 typeO PDU 组丢失的情况。 具体的, 无论一个 typeO PDU组相应的同步序列是否被 eNB全部或部分 接收到, 或者该 typeO PDU组相应的同步序列为空, 如果该 typeO PDU组丢失, eNB都 可以根据已接收到的 MBMS数据包的相关信息, 比如时间戳、 或者累计字节数、 或者累 计数据包数等, 确定未接收到本应该到达的该 typeO PDU组, 因此本实施例提供的处理 子帧的方法均适用。 本实施例中, 假设 eNB对 MBMS数据包进行调度的两个连续的动态调度周期分别为 DSP3和 DSP4, DSP3的起始时间点为 T3, 该 DSP3之后的 DSP4的起始时间点为 Τ4。
以图 4为例, 在步骤 320中, 如果 eNB判断出 Te、 Tf、 Tg和 Th均位于 T3和 T4之 间, 即在 Τ3之后且在 Τ4之前, 则 eNB确定应该在 DSP4内对同步序列 E、 F、 G和 H中 的 MBMS数据包进行调度。
进一步的,由于 eNB可以根据预先配置确定应该接收到的各同步序列的时间戳范围。 因此, 如果 eNB没有接收到任何一个 typeO PDU, 其时间戳在 eNB根据预先配置确定的 某一个时间戳范围内, 则可以确定 typeO PDU组丢失。 如果上述 4个 typeO PDU组中, 至少有 1个 PDU组的全部内容丢失, 则 eNB执行步骤 330。
以图 4为例, eNB未接收到与 F相应的第 1个、 第 2个和第 3个 typeO PDU, 则即 使 eNB接收到同步序列 F,也无法判断该同步序列 F中的数据包何时发送完毕。如果 eNB 根据现有的技术方案, 预估该同步序列中的数据包发送完毕的时机, 都将是不准确的, 因此, eNB根据预估结果所生成的 DSI将是不准确的 DSI, 与其他 MBSFN区域内的其他 eNB所生成的 DSI不同,从而造成对其他 eNB的干扰,还可能进一步导致 UE错误接收数 据甚至无法接收到数据。 因此, 本实施例中的 eNB会在确定与 F相应的 typeO PDU组的 全部内容丢失后, 执行步骤 330。
如果上述 4个 typeO PDU组中, 每个 typeO PDU组都至少有 1个 typeO PDU被 eNB 接收到, 则 eNB可以确定各同步序列发送完毕的时机, 则 eNB执行步骤 340。
步骤 330、 eNB用于发送与动态调度周期 DSP对应的动态调度信息 DSI的子帧为空, 其中, 该 DSP用于发送 eNB未接收到的 typeO PDU组相应的 MBMS数据包, 或者说是同 步序列中的 MBMS数据包。
例如, eNB在应发送与该 DSP对应的 DSI动态调度信息的子帧保持静默。又如, eNB 先确定能否生成与该 DSP对应的完整的 DSI, 如果否, eNB在应发送与该 DSP对应的 DSI 的子帧保持静默。
本步骤中, eNB用于发送与该 DSP对应的 DSI的子帧为空, 也可以描述为: eNB在 本应该发送包括 DSI的子帧时不发送任何内容, 其中, 本应该生成的 DSI用于指示 eNB 如何动态调度该 DSP内要发送的 MBMS数据。
本步骤中, eNB可以在该 DSP内发送 MBMS数据包。具体的, 如果存在 eNB已接收到 的、 将在该 DSP内进行调度的其他 MBMS数据包, 则 eNB可以通过该 DSP中的其他子帧 发送上述其他 MBMS数据包。可选的,上述其他 MBMS数据包可以包括:由核心网设备 BM-SC 发送的时间早于丢失的 typeO PDU组相应的同步序列的结束时间; 和 /或, 应由 eNB在 调度丢失的 typeO PDU 组相应的 MBMS 数据包所属的业务之前进行调度, 且与丢失的 typeO PDU组相应的 MBMS数据包属于不同业务的 MBMS数据包。
以图 4为例, eNB在步骤 320中已接收到同步序列 E, E中 MBMS数据包将在该 DSP 内进行调度。 此外, eNB可以根据已接收到的 MBMS数据包的头部信息获知, BM-SC发送 E的时间早于与丢失的 typeO PDU组相应的同步序列 (指 F) 的发送时间。 因此, 在该 DSP内, 本应该发送 DSI 的空子帧之后的子帧中, eNB可以发送已接收到的同步序列 E 中的 MBMS数据包。 如果 eNB虽然未接收到与同步序列 F相应的 typeO PDU组, 但接收 到了同步序列 F中的一些 MBMS数据包, 则 eNB可以在发送 E中的 MBMS数据包之后, 发 送已接收到的同步序列 F中的 MBMS数据包。 由于 eNB无法判断 F是否发送完毕, 因此 即使 eNB接收到 BM-SC发送的同步序列 G和 H,也无法确定 G和 H中的 MBMS数据包在该 DSP中的发送位置, 所以 eNB不会发送接收到的 G和 H中的 MBMS数据包。进一步的, 假 设 eNB采用现有的动态调度方式发送5, 则相应的, UE未接收到该 DSP相应的 DSI, 可 以读取该 DSP内的全部内容, 那么, UE可以读取到 MBMS数据包 E。 可见, 与 eNB完全 不发送数据包或者发送错误的 DSI相比, 本实施例提供的方法可以使得 UE接收到更多 的数据, 使得 eNB的数据传输效率更高。
进一步的, 假设该 DSP由本应该发送 DSI的子帧、 发送上述其他 MBMS数据包的其 他子帧和剩余子帧组成, 则 eNB在该 DSP内发送完上述其他 MBMS数据包后, 可以在剩 余子帧保持静默。 需要说明的是, 上述组成 DSP的子帧为 eNB为发送 MBMS数据包预留 的传输信道 MCH子帧, 则 eNB在该 DSP的剩余子帧保持静默指的是, eNB在剩余子帧中 用于发送与丢失的 typeO控制包组相应的 MBMS数据包的 MCH信道上不发送任何内容。
本领域技术人员可以理解的, eNB可以在上述剩余子帧中发送非 MBMS数据包,这些 非 MBMS数据包占用非 MCH信道, 例如 eNB可以采用较低的功率, 在上述剩余子帧中发 送单播数据包, 这些单播数据包承载在专用信道 DTCH, 占用的传输信道为 DL-SCH。
步骤 340、 eNB生成并发送该 DSP对应的 DSI。
本步骤中的 eNB可以参照现有的技术方案, 实现 DSI的生成和发送, 并在发送包含 DSI的子帧后, 发送已接收到的 MBMS数据包。
本实施例中的基站可以先确定未接收到的包是否满足既定条件, 例如, 是否包括与 某个或某些 MBMS数据包相应的 typeO PDU组, 如果满足既定条件, 则该基站用于发送 与该 DSP对应的 DS I的子帧为空,从而避免 eNB发送错误的 DSI,解决 eNB生成错误 DSI 导致对其他 eNB干扰和 UE错误接收的问题。
本发明上述实施例提供的两种处理子帧的方法可以相结合, 形成另一个本发明实施 例。该实施例中,基站可以先确定未接收到的包是否满足既定条件, 即:是否包括该 eNB 将在一个 DSP内进行调度的两个连续的 MBMS数据包, 以及与某个或某些 MBMS数据包相 应的 typeO PDU组, 某个或某些 MBMS数据包可以是 eNB已接收到的 MBMS数据包, 也可 以是 eNB未接收到的 MBMS数据包。 如果满足既定条件, 则该基站用于发送与该 DSP对 应的 DSI的子帧为空, 从而避免 eNB发送错误的 DSI, 解决 eNB生成错误 DSI导致对其 他 eNB干扰和 UE错误接收的问题。 该实施例中基站确定未接收到的包是否满足既定条 件的方法可以参照本发明上述实施例, 此处不再赘述。
本发明上述实施例提供的处理子帧的方法中, 以 eNB为接入网设备, BM-SC为核心 网设备为例进行说明, 但本发明实施例并不限于此。 例如, 上述实施例中的 eNB可以替 换为家庭基站 (home NodeB , hNB)、 微蜂窝小区基站、 或者 LTE+等系统中位于接入网的 其他设备, BM-SC可以替换为位于核心网的其他设备。
如图 5所示, 本发明实施例还提供一种处理子帧的设备, 该第一设备 50可以用于 实现本发明上述实施例提供的处理子帧的方法。 第一设备 50包括第一接收单元 510和 第一发送单元 520。其中,第一接收单元 510用于确定未接收到的包是否满足第一条件: 包括第一发送单元 520将在一个动态调度周期内进行调度的至少两个连续的多媒体广播 组播业务 MBMS数据包。第一发送单元 520用于在第一接收单元 510的确定结果为是时, 将用于发送与所述动态调度周期对应的动态调度信息的子帧置为空。
其中,第一发送单元 520将用于发送与该动态调度周期对应的动态调度信息的子帧 置为空可以指以下任一种情况: 第一发送单元 520在应发送与该动态调度周期对应的动 态调度信息的子帧保持静默; 或者, 第一发送单元 520确定能否生成与所述动态调度周 期对应的完整的动态调度信息, 如果否, 第一发送单元 520在应发送与该动态调度周期 对应的动态调度信息的子帧保持静默。
本实施例中, 第一接收单元 510可以用于接收 MBMS数据包, 并根据接收到的 MBSM 数据包确定所述未接收到的包是否满足第一条件。 例如, 第一接收单元 510 接收到的 MBSM数据包的头部信息包括累计字节数和累计数据包数,则第一接收单元 510根据该累 计字节数和累计数据包数确定未接收到的包是否满足第一条件。
可选的, 本实施例中, 如果存在第一接收单元 510已接收到的、 第一发送单元 520 将在该动态调度周期进行调度的其他 MBMS数据包。 可选的, 其他 MBMS数据包包括以下 任一种或多种: 由 BM-SC发送的时间早于上述确定丢失的连续 MBMS数据包由 BM-SC发 送的时间、且与上述确定丢失的连续 MBMS数据包属于同一业务的 MBMS数据包;或, eNB 将在调度上述确定丢失的连续 MBMS数据包所属的业务之前进行调度的其他业务的 MBMS 数据包。 在后一种情况下, 其他 MBMS数据包与丢失的连续 MBMS数据包属于不同业务, 但由 BM-SC发送的时间可以不早于上述确定丢失的连续 MBMS数据包由 BM-SC发送的时 间。
可选的, 如果应发送与该 DSP对应的 DS I的子帧是该 DSP的第 1个子帧, 则上述其 他子帧可以在应发送与该 DSP对应的 DS I的子帧之后; 否则, 上述其他子帧可以在应发 送与该 DSP对应的 DS I的子帧之前或者之后。
可选的, 本实施例中的第一发送单元 520还用于: 在发送上述其他 MBMS数据包之 后, 在剩余子帧保持静默, 其中, 上述剩余子帧包括: 第一发送单元 520在该动态调度 周期中, 在上述其他子帧之后, 为上述连续的 MBMS数据包所属的业务映射的传输信道 预留的子帧。
本实施例提供的设备可以是基站(如 eNB )或者其他接入网实体,例如家庭基站(home NodeB, hNB )或者微蜂窝小区基站等,也可以是位于基站或其他接入网实体内部的单元。 该设备可以先确定未接收到的包是否满足既定条件, 例如, 是否包括该 eNB将在一个动 态调度周期 DSP内进行调度的至少两个连续的 MBMS数据包, 如果满足既定条件, 则该 设备用于发送与该 DSP对应的 DSI的子帧为空, 从而避免该设备发送错误的 DSI, 解决 生成错误 DSI导致对其他设备的干扰和 UE错误接收的问题。
如图 6所示, 本发明实施例还提供另一种处理子帧的设备, 该第二设备 60可以用 于实现本发明上述实施例提供的处理子帧的方法。 第二设备 60包括第二接收单元 610 和第二发送单元 620。其中,第二接收单元 610用于确定是否未接收到类型 0控制包组, 即确定未接收到的包是否满足第二条件: 包括类型 0控制包组。 第二发送单元 620用于 在第二接收单元 610的确定结果为是时,将用于发送与动态调度周期对应的动态调度信 息的子帧置为空, 其中, 上述动态调度周期用于发送上述类型 0控制包相应的 MBMS数 据包。
其中,第二发送单元 620将用于发送与上述动态调度周期对应的动态调度信息的子 帧置为空可以指以下任一种情况: 第二发送单元 620在应发送与上述动态调度周期对应 的动态调度信息的子帧保持静默; 或者, 第二发送单元 620确定能否生成与上述动态调 度周期对应的完整的动态调度信息, 如果否, 第二发送单元 620在应发送与上述动态调 度周期对应的动态调度信息的子帧保持静默。
可选的, 本实施例中, 如果存在第二接收单元 610已接收到的、 第二发送单元 620 将在上述动态调度周期进行调度的其它 MBMS数据包则第二发送单元 620还用于通过上 述动态调度周期中的其它子帧发送上述其它 MBMS数据包。 可选的, 上述其他 MBMS数据 包可以包括: 由核心网设备 BM-SC发送的时间早于丢失的 typeO PDU组相应的同步序列 的结束时间; 和 /或, 应由 eNB在调度丢失的 typeO PDU组相应的 MBMS数据包所属的业 务之前进行调度, 且与丢失的 typeO PDU组相应的 MBMS数据包属于不同业务的 MBMS数 据包。
可选的, 如果应发送与该 DSP对应的 DSI的子帧是该 DSP的第 1个子帧, 则上述其 他子帧可以在应发送与该 DSP对应的 DSI的子帧之后; 否则, 上述其他子帧可以在应发 送与该 DSP对应的 DSI的子帧之前或者之后。
可选的, 第二发送单元 620还用于在发送上述其它 MBMS数据包之后, 在剩余子帧 保持静默, 其中, 上述剩余子帧包括: 上述基站在上述动态调度周期中, 在上述其它子 帧之后, 为与上述类型 0控制包组相应的 MBMS数据包所属的业务映射的传输信道预留 的子帧。
本实施例中, 类型 0控制包组包括所有被重复发送、 且内容相同的类型 0控制包。 本实施例提供的设备可以是基站(如 eNB)或者其他接入网实体,例如家庭基站(home NodeB, hNB)或者微蜂窝小区基站等,也可以是位于基站或其他接入网实体内部的单元。 该设备可以先确定未接收到的包是否满足既定条件,例如,是否包括与某个或某些 MBMS 数据包相应的 typeO PDU组,如果满足既定条件,则该设备用于发送与该 DSP对应的 DSI 的子帧为空, 从而避免该设备发送错误的 DSI, 解决生成错误 DSI导致对其他设备的干 扰和 UE错误接收的问题。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通 过程序来指令相关的硬件来完成, 所述的程序可以存储于一计算机可读取存储介质中, 所述的存储介质, 如: R0M/RAM、 磁碟、 光盘等。
以上仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以作出若干改进和润饰, 这些改进和润饰也应视为 本发明的保护范围。

Claims

权利要求
1、 一种处理子帧的方法, 其特征在于, 所述方法包括:
如果基站未接收到的包包括: 所述基站将在一个动态调度周期内进行调度的至少两 个连续的多媒体广播组播业务 MBMS数据包, 则所述基站用于发送与所述动态调度周期对 应的动态调度信息的子帧为空。
2、 如权利要求 1所述的方法, 其特征在于, 所述基站用于发送与所述动态调度周期 对应的动态调度信息的子帧为空包括:
所述基站在应发送与所述动态调度周期对应的动态调度信息的子帧保持静默; 或 者,
所述基站确定能否生成与所述动态调度周期对应的完整的动态调度信息, 如果否, 所述基站在应发送与所述动态调度周期对应的动态调度信息的子帧保持静默。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括:
如果存在所述基站已接收到的、 将在所述动态调度周期进行调度的其他 MBMS数据 包, 则所述基站通过所述动态调度周期中的其他子帧发送所述其他 MBMS数据包;
其中, 所述其他 MBMS数据包包括以下至少一项:
由核心网设备发送的时间早于所述连续的 MBMS数据包由核心网设备发送的时间, 且 与所述连续的 MBMS数据包属于同一业务的 MBMS数据包; 或者,
应由所述基站在调度所述连续的 MBMS数据包所属的业务之前进行调度,且与所述连 续的 MBMS数据包属于不同业务的 MBMS数据包。
4、 如权利要求 3所述的方法, 其特征在于, 所述基站在发送所述其他 MBMS数据包之 后, 所述方法还包括:
所述基站在剩余子帧保持静默; 所述剩余子帧包括: 所述基站在所述动态调度周期 中, 在所述其他子帧之后, 为所述连续的 MBMS数据包所属的业务映射的传输信道预留的 子帧。
5、 一种处理子帧的方法, 其特征在于, 所述方法包括:
如果基站未接收到类型 0控制包组, 所述基站用于发送与动态调度周期对应的动态 调度信息的子帧为空; 所述动态调度周期用于发送所述类型 0控制包组相应的 MBMS数据 包。
6、 如权利要求 5所述的方法, 其特征在于, 所述基站用于发送与所述动态调度周期 对应的动态调度信息的子帧为空包括: 所述基站在应发送与所述动态调度周期对应的动态调度信息的子帧保持静默; 或 者,
所述基站确定能否生成与所述动态调度周期对应的完整的动态调度信息, 如果否, 所述基站在应发送与所述动态调度周期对应的动态调度信息的子帧保持静默。
7、 如权利要求 5或 6所述的方法, 其特征在于, 所述方法还包括: 所述基站根据预 先配置确定应该接收到的各同步序列的时间戳范围;
所述基站未接收到类型 0控制包组包括: 所述基站未接收到时间戳在所述时间戳范 围内的类型 0控制包, 则所述基站确定未接收到所述类型 0控制包所属的类型 0控制包组。
8、 如权利要求 5或 6所述的方法, 其特征在于, 所述方法还包括:
如果存在所述基站已接收到的、 将在所述动态调度周期进行调度的其他 MBMS数据 包, 则所述基站通过所述动态调度周期中的其他子帧发送所述其他 MBMS数据包;
其中, 所述其他 MBMS数据包包括以下至少一项:
由核心网设备发送的时间早于所述类型 0控制包组相应的同步序列的结束时间; 或 者,
应由所述基站在调度所述类型 0控制包组相应的 MBMS数据包所属的业务之前进行调 度, 且与所述类型 0控制包组相应的 MBMS数据包属于不同业务的 MBMS数据包。
9、 如权利要求 8所述的方法, 其特征在于, 所述基站在发送所述其他 MBMS数据包之 后, 所述方法还包括:
所述基站在剩余子帧保持静默; 所述剩余子帧包括: 所述基站在所述动态调度周期 中, 在所述其他子帧之后, 为与所述类型 0控制包组相应的 MBMS数据包所属的业务映射 的传输信道预留的子帧。
10、 一种处理子帧的设备, 其特征在于, 所述设备包括:
第一接收单元, 用于确定未接收到的包是否满足第一条件: 包括第一发送单元将在 一个动态调度周期内进行调度的至少两个连续的多媒体广播组播业务 MBMS数据包; 第一发送单元, 用于在第一接收单元的确定结果为是时, 将用于发送与所述动态调 度周期对应的动态调度信息的子帧置为空。
11、 如权利要求 10所述的设备, 其特征在于, 所述第一发送单元将用于发送与所述 动态调度周期对应的动态调度信息的子帧置为空包括:
所述第一发送单元在应发送与所述动态调度周期对应的动态调度信息的子帧保持 静默; 或者, 所述第一发送单元确定能否生成与所述动态调度周期对应的完整的动态调度信息, 如果否,所述第一发送单元在应发送与所述动态调度周期对应的动态调度信息的子帧保 持静默。
12、 如权利要求 10或 11所述的设备, 其特征在于, 如果存在所述第一接收单元已接 收到的、 所述第一发送单元将在所述动态调度周期进行调度的其他 MBMS数据包, 则所述 第一发送单元还用于通过所述动态调度周期中的其他子帧发送所述其他 MBMS数据包; 其中, 所述其他 MBMS数据包包括以下至少一项:
由核心网设备发送的时间早于所述连续的 MBMS数据包由核心网设备发送的时间, 且 与所述连续的 MBMS数据包属于同一业务的 MBMS数据包; 或者,
应由所述基站在调度所述连续的 MBMS数据包所属的业务之前进行调度,且与所述连 续的 MBMS数据包属于不同业务的 MBMS数据包。
13、 如权利要求 12所述的设备, 其特征在于, 所述第一发送单元还用于: 在发送所 述其他 MBMS数据包之后, 在剩余子帧保持静默; 所述剩余子帧包括: 所述第一发送单元 在所述动态调度周期中, 在所述其他子帧之后, 为所述连续的 MBMS数据包所属的业务映 射的传输信道预留的子帧。
14、 一种处理子帧的设备, 其特征在于, 所述设备包括:
第二接收单元, 用于确定未接收到类型 0控制包组;
第二发送单元, 用于在第二接收单元的确定结果为是时, 将用于发送与动态调度周 期对应的动态调度信息的子帧置为空; 所述动态调度周期用于发送所述类型 0控制包组 相应的 MBMS数据包。
15、 如权利要求 14所述的设备, 其特征在于, 所述第二发送单元将用于发送与所述 动态调度周期对应的动态调度信息的子帧置为空包括:
所述第二发送单元在应发送与所述动态调度周期对应的动态调度信息的子帧保持 静默; 或者,
所述第二发送单元确定能否生成与所述动态调度周期对应的完整的动态调度信息, 如果否,所述第二发送单元在应发送与所述动态调度周期对应的动态调度信息的子帧保 持静默。
16、 如权利要求 14或 15所述的设备, 其特征在于, 如果存在所述第二接收单元已接 收到的、 所述第二发送单元将在所述动态调度周期进行调度的其他 MBMS数据包, 则所述 第二发送单元还用于通过所述动态调度周期中的其他子帧发送所述其他 MBMS数据包; 其中, 所述其他 MBMS数据包包括以下至少一项:
由核心网设备发送的时间早于所述类型 0控制包组相应的同步序列的结束时间; 或 者,
应由所述基站在调度所述类型 0控制包组相应的 MBMS数据包所属的业务之前进行调 度, 且与所述类型 0控制包组相应的 MBMS数据包属于不同业务的 MBMS数据包。
17、 如权利要求 16所述的设备, 其特征在于, 所述第二发送单元还用于: 在发送所述其他 MBMS数据包之后,在剩余子帧保持静默,其中,所述剩余子帧包括: 所述第二接收单元在所述动态调度周期中, 在所述其他子帧之后, 为与所述类型 0控制 包组相应的 MBMS数据包所属的业务映射的传输信道预留的子帧。
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US20120182923A1 (en) 2012-07-19
CN102036170B (zh) 2012-04-04
PT2472913E (pt) 2016-03-02
US20180063683A1 (en) 2018-03-01
EP2472913A1 (en) 2012-07-04
EP3013077A1 (en) 2016-04-27
EP2472913A4 (en) 2012-07-04
EP2472913B1 (en) 2015-11-11
CN102036170A (zh) 2011-04-27

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