WO2009012649A1 - Procédé et appareil de transmission et de réception de services de diffusion/multidiffusion multimédia - Google Patents

Procédé et appareil de transmission et de réception de services de diffusion/multidiffusion multimédia Download PDF

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Publication number
WO2009012649A1
WO2009012649A1 PCT/CN2008/001338 CN2008001338W WO2009012649A1 WO 2009012649 A1 WO2009012649 A1 WO 2009012649A1 CN 2008001338 W CN2008001338 W CN 2008001338W WO 2009012649 A1 WO2009012649 A1 WO 2009012649A1
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WIPO (PCT)
Prior art keywords
multimedia broadcast
broadcast multicast
multicast service
time slot
code channel
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PCT/CN2008/001338
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English (en)
French (fr)
Inventor
Xuelong Wang
Yu Ding
Original Assignee
Datang Mobile Communication Equipment Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communication Equipment Co., Ltd. filed Critical Datang Mobile Communication Equipment Co., Ltd.
Priority to US12/670,400 priority Critical patent/US8755321B2/en
Priority to KR1020107003790A priority patent/KR101227804B1/ko
Publication of WO2009012649A1 publication Critical patent/WO2009012649A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/22Arrangements affording multiple use of the transmission path using time-division multiplexing
    • 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

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and device for transmitting and receiving multimedia broadcast multicast services. Background technique
  • MBMS Multimedia Broadcast I Multicast Service
  • MBSFN Multimedia Broadcast/Multicast Service-single frequency network
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • SFN single frequency network
  • the characteristic of this transmission mode is that the same signal from multiple cells is required to be synchronously transmitted to the UE, and the UE needs to perform multipath processing on the delayed signal and perform physical layer merging, thereby eliminating interference between cells, and even transforming interference between cells.
  • SFN single frequency network
  • the most essential requirement of the SFN transmission mode is that the cells participating in the SFN use the same scrambling code and inter-station synchronization.
  • station synchronization is required. Therefore, when transmitting based on the MBSFN mode, it is only required to additionally require each cell to use the same scrambling code when transmitting the MBMS service.
  • MBMS transmission based on MBSFN mode is applied to a TDD network, which means that a given MBMS service is transmitted in SFN mode by using one or more time slots or one independent carrier; when MBMS transmission based on MBSFN mode is applied to an FDD network, It refers to transmitting a given MBMS service in SFN mode by using a single carrier.
  • the LCR TDD system when the LCR TDD system transmits MBMS services with lower data rates based on the MBSFN mode, the LCR TDD system performs MBSFN transmission on the MBMS services in units of one regular service time slot in the LCR TDD subframe, as shown in FIG. As shown, the LCR TDD system allocates two time slots to respectively carry two MBMS services with lower data rates, and each time slot performs MBSFN transmission on each of the MBMS services carried by the respective time slots. When the LCR TDD system transmits the MBMS service with higher data rate based on the MBSFN mode, the LCR TDD system combines multiple regular service time slots to transmit the MBMS service based on the MBSFN mode.
  • the LCR TDD system allocates two.
  • the consecutive time slots are used to carry a MBMS service with a higher data rate, and the two consecutive time slots perform one MBSFN transmission for the MBMS service carried by the two consecutive time slots.
  • the LCR TDD system sends the MBMS service based on the MBSFN mode.
  • the minimum resource unit is a time slot, and one time slot carries at most one MBMS service. This is not conducive to resource scheduling for different MBMS services.
  • the transmission rate of an MBMS service cannot be accurately matched to an integer number of time slots, the MBMS service that can be carried by only occupying less than one time slot will have to occupy one time slot for transmission, which will cause waste of the bearer resources.
  • FDD uses TTI as a repeat scheduling interval, and transmits multiple MBMS services based on MBSFN mode in TDM mode.
  • FDD adapts frequency to MBMS with different data rates.
  • the service that is, the TTI needs to be adjusted according to the data rate of the MBMS service to be sent.
  • the TTI is appropriately lengthened, and when the data rate is small, it is appropriately shortened.
  • a schematic diagram of performing MBSFN transmission in TDM mode is a TTI (assumed to be 40 ms) for two MBMS services.
  • the transmission method is not conducive to the discontinuous reception (non-DRX) of the UE, and since the TTI can be adjusted in the Release 7, the situation in which multiple services occupy the same resource may occur in the scheduling process.
  • the present invention provides a method for transmitting and receiving a multimedia broadcast multicast service, which is used to solve the problem that the slot resources cannot be reasonably utilized in the prior art.
  • the present invention also provides a multimedia broadcast multicast service transmitting and receiving device, which solves the problem that the prior art cannot reasonably and fully utilize the time slot resource.
  • the present invention provides a method for transmitting a multimedia broadcast multicast service, including the steps of:
  • the time division duplex system divides the code channel on the time slot for carrying the multimedia and the body broadcast multicast service; and carries the multimedia broadcast multicast service to be sent to the corresponding code channel, based on the multimedia broadcast multicast service list.
  • the frequency network mode is sent to the user equipment.
  • the invention provides a multimedia broadcast multicast service receiving method, comprising the steps of:
  • the user equipment obtains, according to the multimedia broadcast multicast service control information, the code channel information occupied by the time slots occupied by the multimedia broadcast multicast service for carrying the multimedia broadcast multicast service, and the code occupied by each multimedia broadcast multicast service based on the acquired
  • the channel information on the corresponding code channel of the time slot for carrying the multimedia broadcast multicast service, receives the corresponding multimedia broadcast multicast service.
  • the present invention provides a multimedia broadcast multicast service sending device, including:
  • a code channel dividing unit configured to divide a code channel on a time slot for carrying the multimedia broadcast multicast service
  • a sending unit configured to carry the corresponding multimedia broadcast multicast service to be sent to the code channel dividing unit
  • the code channel is sent to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the present invention provides a multimedia broadcast multicast service receiving device, including:
  • a code channel information acquiring unit configured to acquire code channel information on a time slot occupied by each multimedia broadcast multicast service for carrying a multimedia broadcast multicast service, based on each multimedia broadcast multicast service control information;
  • the code channel information occupied by each multimedia broadcast multicast service obtained by the channel information acquisition unit is received on the corresponding code channel of the time slot for carrying the multimedia broadcast multicast service.
  • the present invention provides a method for transmitting a multimedia broadcast multicast service, including the steps of:
  • the time-division holistic system allocates a time slot for carrying the multimedia broadcast multicast service in the repeating scheduling interval and the repeating scheduling interval for each multimedia broadcast multicast service to be transmitted, and is used to carry the multimedia broadcast multicast service to be sent;
  • the multicast broadcast multicast service is sent to the corresponding time slot in the corresponding repetitive scheduling interval, and is sent to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the invention provides a multimedia broadcast multicast service receiving method, comprising the steps of:
  • the user equipment obtains the current transmission scheduling parameters of each multimedia broadcast multicast service based on the current multimedia broadcast multicast service control information, where the transmission scheduling parameter is used to indicate the current repetitive scheduling interval of each multimedia broadcast multicast service, and the repetitive scheduling a time slot in the interval and a next repeated scheduling interval in which each multimedia broadcast multicast service is located; and an indication based on the transmission scheduling parameter, on a corresponding time slot within a corresponding repeated scheduling interval for carrying the current multimedia broadcast multicast service Receiving each multimedia broadcast multicast service, and preparing to receive each multimedia broadcast multicast service in a next repeated scheduling interval that carries each multimedia broadcast multicast service.
  • the present invention provides a multimedia broadcast multicast service sending device, including:
  • a bearer resource allocation unit configured to allocate, for each of the to-be-transmitted multimedia broadcast multicast services, a re-schedule interval and a time slot for carrying the multimedia broadcast multicast service in the re-scheduling interval, to carry the multimedia broadcast multicast service to be sent;
  • the sending unit is configured to send the to-be-transmitted multimedia broadcast multicast service to the corresponding time slot in the corresponding repetitive scheduling interval allocated by the bearer resource allocation unit, and send the message to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the present invention provides a multimedia broadcast multicast service receiving device, including:
  • a transmission scheduling parameter obtaining unit configured to acquire, according to current multimedia broadcast multicast service control information, a transmission scheduling parameter of each multimedia broadcast multicast service, where the transmission scheduling parameter is used to indicate a current repetition of each multimedia broadcast multicast service a scheduling interval, a time slot in a repetitive scheduling interval, and a next repetitive scheduling interval in which each multimedia broadcast multicast service is located.
  • the receiving unit is configured to carry the current multimedia broadcast multicast service according to the indication of the transmission scheduling parameter. Repetitive scheduling Each multimedia broadcast multicast service is received on a corresponding time slot in the compartment, and is ready to receive each multimedia broadcast multicast service in a next repeated scheduling interval that carries each multimedia broadcast multicast service.
  • the present invention provides a method for transmitting a multimedia broadcast multicast service, including the steps of:
  • the time division duplex system divides the code channels of the extra time slots to be used for the multimedia broadcast multicast service to be transmitted in the time slot for carrying the multimedia broadcast multicast service; and carries the multimedia broadcast multicast services to be transmitted to an integer number of The time slot in the time slot for carrying the multimedia broadcast multicast service and the borrowed one of the additional time slots is sent to the user equipment based on the multimedia broadcast multicast service single frequency network mode.
  • the invention provides a multimedia broadcast multicast service receiving method, comprising the steps of:
  • the user equipment acquires complete time slot information used by each multimedia broadcast multicast service for carrying the multimedia broadcast multicast service, and code channel information on the extra time slot based on the multimedia broadcast multicast service control information; the user equipment is based on the acquired The complete time slot information occupied by each multimedia broadcast multicast service, and the code channel information on the additional time slots are received on corresponding code slots for carrying the multimedia broadcast multicast services and corresponding code channels of the additional time slots.
  • Multimedia broadcast multicast service is
  • the present invention provides a multimedia broadcast multicast service sending device, including:
  • a code channel dividing unit configured to divide a code channel by using an additional time slot to be used for transmitting the multimedia broadcast multicast service in a time slot for carrying the multimedia broadcast multicast service; and sending, for transmitting the multimedia to be sent
  • the broadcast multicast service is carried in an integer number of time slots for carrying the multimedia broadcast multicast service, and the code track in an additional time slot divided by the code channel dividing unit, and is sent to the user based on the multimedia broadcast multicast service single frequency network mode. device.
  • the present invention provides a multimedia broadcast multicast service receiving device, including:
  • a bearer information acquiring unit configured to acquire, according to each multimedia broadcast multicast service control information, complete slot information used by each multimedia broadcast multicast service for carrying a multimedia broadcast multicast service, and code channel information on an additional time slot; a receiving unit, configured to use the complete time slot information occupied by each multimedia broadcast multicast service acquired by the bearer information acquiring unit, and the code channel information on the extra time slot, in a corresponding complete time slot for carrying each multimedia broadcast multicast service
  • Each multimedia broadcast multicast service is received on a corresponding code channel of the upper and the additional time slots.
  • the present invention provides a method and a device for transmitting and receiving a multimedia broadcast multicast service (CDM).
  • CDM multimedia broadcast multicast service
  • the time slot for carrying the MBMS service is divided into multiple code channels, and is used to carry multiple MBMS services with a small data rate to be transmitted.
  • a time slot can simultaneously transmit multiple MBMS services with a small data rate, and utilize time slot resources reasonably and fully;
  • the present invention provides a method and device for coordinating TDM transmission and reception of a multimedia broadcast multicast service, which utilizes time slot resources reasonably and fully, and facilitates discontinuous reception (non-DR) of the UE. Further, the present invention provides multimedia broadcast.
  • the multicast service shared time slot transmitting and receiving method and device allocates an integer number of complete time slots and an additional rationality for the MBMS that is not suitable for transmitting in an integer number of time slots, and fully utilizes the time slot resources.
  • FIG. 1 is a schematic diagram of an LCR TDD system allocating two time slots respectively carrying two MBMS services with a lower data rate;
  • Figure 2 shows that the LCR TDD system allocates two consecutive time slots for carrying a higher data rate.
  • FIG. 3 shows TRM as a repeat scheduling interval for two MBMS services.
  • FIG. 4 is a flowchart of a method for transmitting a CDM of a multimedia broadcast multicast service according to the present invention
  • FIG. 5 is a schematic diagram of dividing a code channel by a CDM transmission method of a multimedia broadcast multicast service according to the present invention
  • FIG. 6 is a schematic diagram of a method for transmitting a CDM of a multimedia broadcast multicast service according to an embodiment of the present invention
  • FIG. ⁇ is a flowchart of a CDM receiving method for implementing a multimedia broadcast multicast service according to the present invention
  • FIG. 8 is a flowchart of a method for transmitting a coordinated broadcast TDM of a multimedia broadcast multicast service according to the present invention
  • FIG. 9 is a schematic diagram of a time slot distribution for carrying an MBMS service in a DRX cycle
  • FIG. 10 is a schematic diagram of a coordinated broadcast TDM for a multimedia broadcast multicast service according to the present invention.
  • Three pending in the embodiment Schematic diagram of bearer resource allocation for sending MBMS services;
  • FIG. 11 is a flowchart of a TDM receiving method for implementing a multimedia broadcast multicast service coordination according to the present invention
  • FIG. 12 is a schematic diagram of three embodiments of a multimedia broadcast multicast service coordinated TDM receiving method according to the present invention.
  • FIG. 13 is a hybrid method formed by a CDM mode and a coordinated TDM mode of a multimedia broadcast multicast service according to the present invention
  • FIG. 14 is a flowchart of a method for transmitting a shared time slot of a multimedia broadcast multicast service according to the present invention
  • FIG. 15 is a schematic diagram of two MBMS services occupying bearer resources in a method for transmitting a shared broadcast time slot of a multimedia broadcast multicast service according to the present invention
  • FIG. 16 is a flowchart of a method for receiving a shared time slot of a multimedia broadcast multicast service according to the present invention. detailed description
  • the present invention provides a method and a device for transmitting and receiving a multimedia broadcast multicast service (CDM).
  • CDM multimedia broadcast multicast service
  • the basic idea is to divide a time slot for carrying an MBMS service into multiple code channels, and to carry multiple MBMSs with a small data rate to be transmitted.
  • the service enables a time slot to simultaneously transmit multiple MBMS services with a small data rate, and utilizes the time slot resources reasonably and fully.
  • a flow chart of a method for transmitting a multimedia broadcast multicast service CDM includes the following steps:
  • S101 setting a time slot in the TDD system, sending the MBMS service according to the MBSFN mode, and according to the MBMS service center, requesting the TDM system to simultaneously transmit the MBMS service quantity whose data rate is less than a predetermined rate (for example, 192 kbps),
  • the fixed time slot is divided into code channels for carrying each MBMS service to be transmitted.
  • a predetermined rate for example, 192 kbps
  • the time slot for carrying the multimedia broadcast multicast service performs 2y code points, and 2y code channels are allocated to the n multimedia broadcast multicast services to be sent.
  • the number of code channels occupied by each MBMS service is allowed to be unequal.
  • the TDD system setting time slot TS2 is based on the MBSFN mode, and simultaneously transmits three MBMS services whose data rate is lower than a predetermined value. Since 21 ⁇ 3 ⁇ 22, four codes are divided on the time slot TS2.
  • the channel is used to carry three MBMS services to be transmitted, wherein the TDD system allocates the first code channel of the time slot TS2 for the MBMS service 1, allocates the second code channel of the time slot TS2 for the MBMS service 2, and allocates the time slot for the MBMS service 3.
  • the third and fourth code channels of TS2 may also occupy 4 code channels in time slot TS2 according to other methods.
  • S102 multiplex the MBMS service code to be sent to each code channel of the set time slot for carrying the MBMS service, and send the message to the UE according to the MBSFN mode; where the same multimedia is based on the same scrambling code ID before sending Each multimedia broadcast multicast service carried on each code channel in the broadcast multicast service time slot is modulated.
  • a flowchart for implementing a multimedia broadcast multicast service CDM receiving method includes the following steps:
  • the system Before transmitting the MBMS service, the system sets each MB channel in the MBMS service time slot to modulate the MBMS service it carries, and the scrambling code ID used in each code channel modulation remains the same.
  • the UE obtains MBMS service control information, where the MBMS service control information includes code channel information on a time slot occupied by each multimedia broadcast multicast service for carrying the multimedia broadcast multicast service.
  • S120 The UE receives the corresponding multimedia broadcast multicast service on the corresponding code channel of the time slot for carrying the multimedia broadcast multicast service, based on the obtained code channel information occupied by each multimedia broadcast multicast service.
  • the UE can receive only the MBMS service that is of interest to the UE as needed. For example, for three MBMS services using the code channel allocation mode as shown in FIG. 6, the system indicates the UE based on the control information, and the MBMS service 2 transmits on the second code channel of the time slot TS2, so that only the MBMS service is sensed. The interested UE can only receive the MBMS service 2 carried on the second code channel in the time slot TS2 according to the information.
  • the MBMS service sending device includes: a code channel dividing unit, configured to divide a code channel on a time slot for carrying the multimedia broadcast multicast service, and a sending unit, configured to carry the corresponding multimedia broadcast multicast service to be sent to the code channel dividing unit
  • the code channel is sent to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the MBMS service receiving device is required to include:
  • a code channel information acquiring unit configured to acquire code channel information on a time slot occupied by each multimedia broadcast multicast service for carrying a multimedia broadcast multicast service, based on each multimedia broadcast multicast service control information;
  • the code channel information occupied by each of the multimedia broadcast multicast services obtained by the channel information acquisition unit receives the corresponding multimedia broadcast multicast service on the corresponding code channel of the time slot for carrying the multimedia broadcast multicast service.
  • the processing unit required to implement the CDM transmission and reception method of the MBMS of the present invention in the MBMS service transmission device and the MBMS service reception device may be implemented based on a software program. On the other hand, it can also be implemented based on an improved upgrade of existing hardware.
  • the present invention provides a method and device for coordinating TDM transmission and reception of a multimedia broadcast multicast service, which utilizes time slot resources reasonably and fully, and facilitates non-continuous reception (non-DRX) of the UE.
  • the flow chart for implementing the MBMS coordinated TDM transmission method includes the following steps:
  • S201 setting a time slot in the TDD system, sending the MBMS service according to the MBSFN transmission mode, and according to the quantity and data rate of the MBMS service sent by the TDD system according to the MBMS service center, the TDD system allocates each MBMS service to be sent.
  • the time slot resource may include: a repetitive scheduling interval occupied by each MBMS service, a scheduling start and end point in a repetitive scheduling interval occupied by each MBMS service, and a length of a repetitive scheduling interval in which each MBMS service is located; wherein the repetitive scheduling interval may be a universal mobile communication
  • the discontinuous reception period DRX cycle in the system UMTS, Universal Mobile Telecommunications System
  • DRX cycle k-160 ms , (k ⁇ 9, keN)
  • the data rate sent by the TDD system simultaneously is less than a predetermined value.
  • the number of MBMS services and the data rate are determined. How to allocate one of the k's 32 slots for carrying MBMS services in the DRX cycle for each MBMS service to be transmitted, and allocate more consecutive MBMS services with larger data rates.
  • the time slot, the MBMS service with a small data rate can allocate fewer consecutive time slots, but the number of set time slots required for each MBMS service to be transmitted is an integer multiple of 8, that is, each MBMS to be sent.
  • the service needs to occupy an integral multiple of 40ms;
  • the TDD system sets the MBMS service based on the MBSFN transmission mode by using the TS2 time slot, and the MBMS service center requests the TDD system to send the MBMS service 1, the MBMS service 2, and the MBMS service 3 according to three MBMS to be sent.
  • the data rate of the service the TDD system allocates time slot resources for each MBMS service to be sent: three DRX cycles of length 640 ms are allocated for the three to-be-transmitted MBMS services: DRXO cycle, DRX1 cycle, DRX2 cycle, where, based on the DRXO cycle All time slots TS2 in the first to 24th subframes carry MBMS service 1, and carry MBMS service 2 based on all time slots TS2 in the 25th to 64th subframes, based on the 65th to the ⁇ 128th subframes All time slots TS2 carry the MBMS service 3; furthermore, all the time slots TS2 in the first to the 24th subframes of the DRX1 cycle are used to carry the MBMS service 1, and are carried based on all the time slots TS2 in the 25th to 128th subframes.
  • MBMS service 2 further, MBMS service 1 is carried based on all time slots TS2 in the first to 40th subframes of the DRX2 cycle, based on all time slots TS2 in the 41st to 128th subframes. 3 carrying the MBMS service.
  • the TDD system may allocate a discontinuous rescheduling interval for the MBMS service to be sent.
  • the MBMS service 3 in the above example is allocated in the first repetitive scheduling interval and the third repetitive scheduling interval, that is, the MBMS service 3 points.
  • the repeated scheduling interval is not continuous.
  • the MBMS service to be sent is carried to the time slot resource allocated by the TDD system, and is sent to the UE according to the MBSFN mode. As shown in FIG. 10, the MBMS service is carried by 24 TS2 timeslots in the first 120 ms of the DRXO cycle.
  • the first 120 ms of the DRX1 cycle is used to carry the MBMS service 1 to the UE in 24 TS2 slots, and the remaining 520 ms is used in 104 TS2.
  • the slot bearer MBMS service 2 is sent to the UE; in the first 200 ms of the third repetition interval period DRX2 cycle, 40 TS2 timeslots are used to carry the MBMS service 1 and sent to the UE, and the remaining 440 ms is carried by the 88 TS2 time slots to carry the MBMS service 3 to Hey.
  • the method for implementing the MBMS coordinated TDM receiving method includes the following steps: S210: The user equipment acquires, according to the current multimedia broadcast multicast service control information, the current transmission scheduling parameters of each multimedia broadcast multicast service, where each current The transmission scheduling parameters of the MBMS service include: The DRX cycle DRX Cycle is used to indicate the repetitive scheduling interval of the current MBMS service, and the start offset Start Offset is used to indicate the offset of the MBMS service scheduling start in the DRX Cycle, and the persistent scheduling duration is Used to indicate the continuous transmission time of the MBMS service in a DRX cycle (where the parameters Start Offset and Duration jointly indicate the time slot used for transmitting the MBMS service in the DRX cycle), and the next scheduling interval Next interval is used to indicate the MBMS The next repeat scheduling interval where the service is located;
  • S220 Receive, according to the indication of the transmission scheduling parameter, the multimedia broadcast multicast service on the corresponding time slot in the corresponding repetitive scheduling interval for carrying the current multimedia broadcast multicast service, and prepare to carry each multimedia broadcast multicast service. Each multimedia broadcast multicast service is received within the next repeated scheduling interval.
  • the UE needs to receive continuously for the MBMS service that occupies the continuous repetitive scheduling interval.
  • the UE may select the DR mode to receive.
  • the UE may Select the DR receiving mode:
  • the time slot TS2 of the 320 ms to the 640 ms (320 ms+320 ms) in the DRX0 Cycle receives the MBMS service 3 and is ready to receive the MBMS service 3 data in the repeat scheduling interval DRX2 Cycle;
  • the MBMS service sending device is required to include:
  • a bearer resource allocation unit configured to allocate, for each of the to-be-transmitted multimedia broadcast multicast services, a re-schedule interval and a time slot for carrying the multimedia broadcast multicast service in the re-scheduling interval, to carry the multimedia broadcast multicast service to be sent;
  • a sending unit configured to send each of the to-be-transmitted multimedia broadcast multicast services to the corresponding time slot in the corresponding repetitive scheduling interval of the bearer resource allocation unit, and send the data to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the MBMS service receiving device is required to include:
  • a transmission scheduling parameter obtaining unit configured to acquire, according to current multimedia broadcast multicast service control information, a transmission scheduling parameter of each multimedia broadcast multicast service, where the transmission scheduling parameter is used to indicate a current repetition of each multimedia broadcast multicast service The scheduling interval, the time slot in the repetitive scheduling interval, and the next repeated scheduling interval in which each multimedia broadcast multicast service is located;
  • a receiving unit configured to receive, according to an indication of a transmission scheduling parameter, each multimedia broadcast multicast service on a corresponding time slot in a corresponding repetitive scheduling interval for carrying the current multimedia broadcast multicast service, and prepare to carry each multimedia broadcast Each multimedia broadcast multicast service is received in the next repeated scheduling interval of the multicast service.
  • the MBMS transmission method can also integrate the CDM mode and the coordinated TDM mode, as shown in Fig. 13, which is a hybrid method of the CDM mode and the coordinated TDM mode.
  • the time division duplex system divides the code channel on the time slot for carrying the multimedia broadcast multicast service, and carries the multimedia broadcast multicast service to be sent to the divided Corresponding code channel.
  • the number of code channels used to carry each multimedia broadcast multicast service to be transmitted is not equal.
  • the multimedia broadcast multicast service carried on each code channel in the same multimedia broadcast multicast service time slot is modulated based on the same scrambling code ID.
  • the bearer resource allocation unit further includes a code channel dividing unit, where the code channel dividing unit is configured to divide a code channel on a time slot for carrying the multimedia broadcast multicast service; and the sending unit And transmitting, to the user equipment, the multimedia broadcast multicast service to be sent to the corresponding code channel that is divided by the code channel dividing unit, and is sent to the user equipment according to the multimedia broadcast multicast service single frequency network mode.
  • the user equipment acquires code channel information occupied by the time slots occupied by the multimedia broadcast multicast service for carrying the multimedia broadcast multicast service based on the multimedia broadcast multicast service control information;
  • the code channel information occupied by each multimedia broadcast multicast service receives the corresponding multimedia broadcast multicast service on the corresponding code channel of the time slot for carrying the multimedia broadcast multicast service.
  • the transmission scheduling parameter obtaining unit further includes a code channel information acquiring unit, where the code channel information acquiring unit is configured to acquire each multimedia broadcast multicast service occupation based on each multimedia broadcast multicast service control information.
  • the corresponding multimedia broadcast multicast service is received on the corresponding code channel of the time slot of the broadcast multicast service.
  • the above-mentioned processing unit for implementing the MBM integrated CDM and the coordinated TDM transmission and receiving manner in the MBMS service transmitting device and the MBMS service receiving device may be implemented based on a software program. On the other hand, it can also be implemented based on an improved upgrade of existing hardware.
  • the invention also provides an MBMS shared time slot transmitting and receiving method and device, which allocates an integer number of complete time slots and a partial time slot partial code for an MBMS which is not suitable for transmitting by an integer number of time slots. In this way, an extra time slot can be borrowed for sharing with multiple MBMS services to be transmitted, and the time slot resources can be utilized reasonably and fully.
  • a flowchart for implementing a method for transmitting an MBMS shared time slot includes the following steps: S301: Set, in a TDD system, use m time slots to send an MBMS service based on an MBSFN mode, and when the MBMS service center requests the TDD system, When sending multiple MBMS services with a data rate greater than a certain preset value (for example, 512 kbps), the TDD system allocates an integer number of complete time slots (for example, one time slot) for an MBMS service that is not suitable for carrying an integer number of complete time slots.
  • a certain preset value for example, 512 kbps
  • n code points are performed on the borrowed extra time slots, and one code channel is allocated for each multimedia broadcast multicast service to be transmitted borrowing the additional time slots; if 2y-l ⁇ n ⁇ 2y, performing 2y code divisions for the borrowed extra time slots, and allocating 2y code channels for n multimedia broadcast multicast services to be transmitted by using the additional time slots, allowing each MBMS service to occupy The number of code channels is not equal.
  • the TDD system allocates an integer number of complete time slots to carry the MBMS service to be sent.
  • the MBMS service to be sent is carried on the code channel corresponding to the corresponding integer time slot and the additional time slot for carrying the MBMS service, and is sent to the UE according to the MBSFN mode.
  • the same scrambling code is used before the MBMS service is sent.
  • the ID modulates the same MBMS service carried on an integer number of complete time slots, and modulates the MBMS service carried on each code channel in the same additional time slot based on the same scrambling code ID.
  • MBMS service 1 is carried to the entire time slot of TS1 and TS2 and the first three code channels of TS3 8 code channels, then the two complete time slots TS1 and TS2 carrying MBMS service 1 are modulated when modulating MBMS service 1 data.
  • the scrambling code IDs used are the same, and the first three code channels in the TS3 carrying the MBMS service 1 have the same scrambling code IDs used when modulating the MBMS service 1 data.
  • One TDD system setting uses the three slots of TS1, TS2, and TS3 to transmit the MBMS service based on the MBSFN transmission mode, if the MBMS service center requests the TDD system to simultaneously transmit two Service, and the data rate of the two services is greater than the bearer capacity of one time slot and less than the bearer capacity of two time slots.
  • the TDD system is the MBMS service 1 and the MBMS service to be sent.
  • the additional time slot TS2 is divided into two code channels.
  • the MBMS service 1 to be transmitted is carried on one code channel of the complete TS1 time slot and the TS2 time slot, and the MBMS service 2 to be transmitted is carried to the second code channel of the TS2 time slot and the complete TS3 time slot, based on The MBSFN mode is sent to the UE.
  • a flowchart of a method for receiving an MBMS shared time slot includes the following steps: S310: The user equipment acquires, according to each multimedia broadcast multicast service control information, each multimedia and broadcast multicast service is used for carrying multimedia. Full slot information of the broadcast multicast service, and code channel information on the extra time slots;
  • S320 The user equipment is based on the obtained complete time slot information occupied by each multimedia broadcast multicast service, and the code channel information on the extra time slot, on the corresponding complete time slot and the additional time slot for carrying each multimedia broadcast multicast service. On the corresponding code channel, each multimedia broadcast multicast service is received.
  • the UE that subscribes to the MBMS service sent by the foregoing may also receive some MBMS services in the sent MBMS service according to its own needs.
  • S3010 The UE that subscribes to the MBMS service sent by the foregoing, based on the MBMS service 1 control information, acquires information that the MBMS service 1 occupies the entire TS1 time slot for carrying the MBMS service and the first code channel of the TS2 time slot, and the MBMS service 2 The information of the second code channel of the TS2 slot for carrying the MBMS service and the entire TS3 time slot is occupied.
  • the user equipment receives the MBMS service 1 on the entire TS1 time slot and the first code channel of the TS2 time slot based on the acquired MBMS service 1, the complete time slot information occupied by the MBMS service 2, and the code channel information on the extra time slot.
  • the MBMS service 2 is received on the second code channel of the TS2 slot and the entire TS3 time slot.
  • the UE may also receive only one of the foregoing MBMS services according to its own needs.
  • Some MBMS services for example, receive MBMS service 2 only in the TS2 time slot, two code channels, and the entire TS3 time slot.
  • the MBMS service sending device is required to include:
  • a code channel dividing unit configured to divide a code channel for an extra time slot to be used for a multimedia broadcast multicast service to be transmitted, in a time slot used for carrying the multimedia broadcast multicast service;
  • a sending unit configured to carry each multimedia broadcast multicast service to be sent to an integer number of time slots used to carry the multimedia broadcast multicast service, and a code channel in an additional time slot divided by the borrowed code channel dividing unit, Sending to the user equipment based on the multimedia broadcast multicast service single frequency network mode;
  • the MBMS service receiving device is required to include:
  • the bearer information acquiring unit obtains complete time slot information used by the multimedia broadcast multicast service for carrying the multimedia broadcast multicast service, and code channel information on the extra time slot, based on the multimedia broadcast multicast service control information;
  • a receiving unit configured to use the complete time slot information occupied by each multimedia broadcast multicast service acquired by the bearer information acquiring unit, and the code channel information on the extra time slot, in a corresponding complete time slot for carrying each multimedia broadcast multicast service
  • Each multimedia broadcast multicast service is received on a corresponding code channel of the upper and the additional time slots.
  • the processing unit required to implement the time slot shared transmission and the receiving mode of the MBMS of the present invention in the MBMS service transmitting device and the MBMS service receiving device may be implemented based on a software program. On the other hand, it can also be implemented based on an improved upgrade of existing hardware.
  • the MBMS transmission method can also comprehensively use other methods according to the actual situation of the MBMS service to be transmitted.
  • the spirit and scope of the Ming Thus, it is intended that the present invention cover the modifications and variations of the inventions

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  • Engineering & Computer Science (AREA)
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  • Computer Networks & Wireless Communication (AREA)
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  • Time-Division Multiplex Systems (AREA)

Description

多媒体广播组播业务发送、 接收方法及设备 技术领域
本发明涉及移动通信领域, 尤其涉及多媒体广播组播业务发送、 接收方法 及设备。 背景技术
随着移动通信和互连网络的迅速发展, 出现了大量的移动多媒体业务, 其 中一些应用业务, 需要多个用户设备(UE, User Equipment ) 同时接收相同的 数据, 如电视广播、 视频会议、 视频点播、 网上教育、 互动游戏等。 这些移动 多媒体业务和一般数据相比, 具有数据量大、 持续时间长等特点。 为了有效地 利用移动网络资源, 第三代移动通信标准化伙伴项目 (3GPP, 3rd Generation Partnership Project ) 组织提出了多媒体广播组播业务 (MBMS , Multimedia Broadcast I Multicast Service )。 MBMS是指一个数据源向多个用户设备发送数 据的点到多点业务, 从而实现网络资源的共享。 MBMS不仅能实现纯文本低速 率消息的组播和广播, 而且能实现高速率多媒体业务的组播和广播。
3GPP Release7为频分双工模式(FDD, Frequency Division Duplex )和时 分双工模式(TDD, Time Division Duplex ) 定义了多媒体广播组播服务单频网 络 ( MBSFN, Multimedia Broadcast/Multicast Service- single frequency network ) 传输模式。 MBSFN传输模式, 又称单频网 (SFN, single frequency network ) 传输模式,被提出应用于 MBMS业务传输。这个传输模式的特点是要求来自多 个小区的相同信号同步发送给 UE, UE要将延迟的信号作多径处理并执行物理 层合并, 从而消除小区间的干扰, 甚至可以将小区间的干扰转化为有效信号进 而获得较大的信干比, 进而有利于提高 MBMS的传输效率。 SFN传输模式最 本质的要求是参与 SFN的小区采用相同的扰码并且站间同步。对于低码片速率 时分双工(LCRTDD, Low Chip Rate TDD ) ***来说, 本来就要求站间同步, 因此在基于 MBSFN模式传输时仅需要额外要求各个小区在传输 MBMS业务时 采用相同的扰码即可。
目前, 基于 MBSFN模式的 MBMS传输应用于 TDD网络时, 是指利用一 个或多个时隙或者一个独立载波按 SFN模式传输一个给定的 MBMS业务; 基 于 MBSFN模式的 MBMS传输应用于 FDD网络时, 是指利用一个独立载波按 SFN模式传输一个给定的 MBMS业务。
在 3GPP Release7中 , LCR TDD***对数据速率较低的 MBMS业务基于 MBSFN模式进行发送时, LCR TDD***以 LCR TDD子帧中一个常规业务时 隙为单位, 对 MBMS业务执行 MBSFN发送, 如图 1所示, LCR TDD***分 配两个时隙分别承载两个数据速率较低的 MBMS 业务, 各时隙对各自承载的 MBMS业务分别执行 MBSFN发送。 LCR TDD***对数据速率较高的 MBMS 业务基于 MBSFN模式进行发送时, LCR TDD***将多个常规业务时隙合并起 来对 MBMS业务基于 MBSFN模式进行发送, 如图 2所示, LCR TDD***分 配两个连续的时隙用来承载一个数据速率较高的 MBMS业务,这两个连续时隙 对其承载的 MBMS业务执行一个 MBSFN发送。 LCR TDD***对 MBMS业务 基于 MBSFN模式进行发送的这种发送方式, 要求最小资源单位是一个时隙, 一个时隙最多承载一个 MBMS业务, 不利于针对不同的 MBMS业务进行资源 调度,换个角度说, 当一个 MBMS业务的发送速率不能准确地匹配到整数个时 隙时,只占用少于一个时隙就能承载的 MBMS业务将不得不占用一个时隙来传 输, 这会造成承载资源的浪费。
在 3GPP Rdease7中, 针对不同数据速率的 MBMS业务, FDD釆用以 TTI 为重复调度间隔,按 TDM方式对多个 MBMS业务基于 MBSFN模式进行发送, FDD以调度的频度来适应不同数据速率的 MBMS业务, 即 TTI需要根据待发 送 MBMS业务的数据速率大小进行调节, 当数据速率较大时将 TTI适当调长, 当数据速率较小时将 ΤΉ适当调短。如图 3所示, 为对两个 MBMS业务以 TTI (假设为 40ms ) 为重复调度间隔, 按 TDM方式执行 MBSFN发送的示意图。 、 这种发送方法不利于 UE的非连续接收(non-DRX ), 而且由于在 Release7中 TTI可以调节, 导致调度过程中可能出现多个业务占用同一 ΤΉ资源的情况。 发明内容
本发明提供多媒体广播组播业务发送、 接收方法, 用以解决现有技术中存 在不能合理、 充分利用时隙资源的问题。
相应的, 本发明还提供了多媒体广播組播业务发送、 接收设备, 用以解决 现有技术中存在不能合理、 充分利用时隙资源的问题。
本发明提供了一种多媒体广播组播业务发送方法, 包括步骤:
时分双工***在用于承载多媒、体广播组播业务的时隙上划分码道; 将各待 发送的多媒体广播组播业务承载到划分出的相应码道上, 基于多媒体广播组播 业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播组播业务接收方法, 包括步骤:
用户设备基于各多媒体广播组播业务控制信息, 获取各多媒体广播组播业 务占用用于承载多媒体广播组播业务的时隙上的码道信息; 以及基于获取的各 多媒体广播組播业务占用的码道信息, 在用于承载多媒体广播组播业务的时隙 的相应码道上, 接收对应的各多媒体广播組播业务。
本发明提供了一种多媒体广播组播业务发送设备, 包括:
码道划分单元, 用于在用于承载多媒体广播组播业务的时隙上划分码道; 发送单元, 用于将各待发送的多媒体广播组播业务, 承载到码道划分单元划分 出的相应码道上, 基于多媒体广播组播业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播组播业务接收设备, 包括:
码道信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取各多 媒体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信息; 接 收单元, 用于基于码道信息获取单元获取的各多媒体广播组播业务占用的码道 信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接收对应的各多 媒体广播组播业务。
本发明提供了一种多媒体广播组播业务发送方法, 包括步骤:
时分默工***为各待发送多媒体广播组播业务分配重复调度间隔和重复调 度间隔内的用于承载多媒体广播组播业务的时隙, 用来承载各待发送多媒体广 播组播业务; 将各待发送多媒体广播组播业务承载到相应重复调度间隔内的相 应时隙上, 基于多媒体广播组播业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播組播业务接收方法, 包括步骤:
用户设备基于当前各多媒体广播组播业务控制信息, 获取当前各多媒体广 播组播业务的传输调度参数, 所述传输调度参数用于指明各多媒体广播组播业 务所在的当前重复调度间隔、 所在重复调度间隔内的时隙以及各多媒体广播组 播业务所在的下一重复调度间隔; 以及基于传输调度参数的指示, 在用于承载 当前各多媒体广播组播业务的相应重复调度间隔内的相应时隙上, 接收各多媒 体广播组播业务, 并准备在承载各多媒体广播组播业务的下一重复调度间隔内 接收各多媒体广播组播业务。
本发明提供了一种多媒体广播組播业务发送设备, 包括:
承载资源分配单元, 用于为各待发送多媒体广播组播业务分配重复调度间 隔和重复调度间隔内的用于承载多媒体广播组播业务的时隙, 用来承载各待发 送多媒体广播组播业务; 发送单元, 用于将各待发送多媒体广播组播业务, 承 载到承载资源分配单元分配的相应重复调度间隔内的相应时隙上, 基于多媒体 广播组播业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播组播业务接收设备, 包括:
传输调度参数获取单元, 用于基于当前各多媒体广播组播业务控制信息, 获取当前各多媒体广播組播业务的传输调度参数, 所述传输调度参数用于指明 各多媒体广播组播业务所在的当前重复调度间隔、 所在重复调度间隔内的时隙 以及各多媒体广播组播业务所在的下一重复调度间隔; 接收单元, 用于基于传 输调度参数的指示, 在用于承载当前各多媒体广播组播业务的相应重复调度间 隔内的相应时隙上, 接收各多媒体广播组播业务, 并准备在承载各多媒体广播 组播业务的下一重复调度间隔内接收各多媒体广播组播业务。
本发明提供了一种多媒体广播組播业务发送方法, 包括步骤:
时分双工***在用来承载多媒体广播组播业务的时隙内 , 对待发送的多媒 体广播组播业务要借用的额外时隙划分码道; 将各待发送的多媒体广播组播业 务承载到整数个用来承载多媒体广播組播业务的时隙内, 以及借用的一个额外 时隙内的码道上 , 基于多媒体广播组播业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播组播业务接收方法, 包括步骤:
用户设备基于各多媒体广播组播业务控制信息, 获取各多媒体广播组播业 务占用的用于承载多媒体广播组播业务的完整时隙信息, 和额外时隙上的码道 信息; 用户设备基于获取的各多媒体广播組播业务占用的完整时隙信息, 和额 外时隙上的码道信息, 在用于承载各多媒体广播组播业务的对应完整时隙上和 额外时隙的相应码道上, 接收各多媒体广播组播业务。
本发明提供了一种多媒体广播组播业务发送设备, 包括:
码道划分单元, 用于在用来承载多媒体广播组播业务的时隙内, 对待发送 的多媒体广播組播业务要借用的额外时隙划分码道; 发送单元, 用于将各待发 送的多媒体广播组播业务承载到整数个用来承载多媒体广播组播业务的时隙 内, 以及码道划分单元划分的一个额外时隙内的码道上, 基于多媒体广播組播 业务单频网模式发送给用户设备。
本发明提供了一种多媒体广播组播业务接收设备, 包括:
承载信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取各多 媒体广播组播业务占用的用于承载多媒体广播组播业务的完整时隙信息, 和额 外时隙上的码道信息; 接收单元, 用于基于承载信息获取单元获取的各多媒体 广播組播业务占用的完整时隙信息, 和额外时隙上的码道信息, 在用于承载各 多媒体广播组播业务的对应完整时隙上和额外时隙的相应码道上 , 接收各多媒 体广播组播业务。 本发明提供多媒体广播组播业务 CDM发送、 接收方法及设备, 将用于承 载 MBMS业务的时隙划分为多个码道,用来承载多个待发送的数据速率较小的 MBMS业务,这使得一个时隙可以同时发送多个数据速率较小的 MBMS业务, 合理、 充分地利用了时隙资源;
此外, 本发明提供多媒体广播組播业务协调 TDM发送、 接收方法及设备, 合理、 充分地利用了时隙资源, 而且有利于 UE的非连续接收( non-DR ); 此外, 本发明提供多媒体广播组播业务共享时隙发送、 接收方法及设备, 为不适宜用整数个时隙进行发送的 MBMS 分配整数个完整的时隙和一个额外 理、 充分利用了时隙资源。 附图说明
图 1为 LCR TDD***分配两个时隙分别承载两个数据速率较低的 MBMS 业务的示意图;
图 2为 LCR TDD***分配两个连续的时隙用于承载一个数据速率较高的
MBMS业务的示意图;
图 3 为对两个 MBMS 业务以 TTI为重复调度间隔, 按 TDM方式执行
MBSFN发送的示意图;
图 4为本发明实现多媒体广播组播业务 CDM发送方法流程图;
图 5本发明多媒体广播组播业务 CDM发送方法划分码道的示意图; 图 6为本发明多媒体广播组播业务 CDM发送方法实施例实现对时隙 TS2 划分 4个码道的示意图;
图 Ί为本发明实现多媒体广播组播业务 CDM接收方法流程图;
图 8为本发明实现多媒体广播组播业务协调 TDM发送方法流程图; 图 9为一个 DRX cycle内用于承载 MBMS业务的时隙分布示意图; 图 10为本发明多媒体广播组播业务协调 TDM发送方法实施例中三个待发 送 MBMS业务的承载资源分配示意图;
图 11为本发明实现多媒体广播组播业务协调 TDM接收方法流程图; 图 12 为本发明多媒体广播组播业务协调 TDM接收方法实施例中三个
MBMS业务占用承载资源的示意图;
图 13为本发明基于多媒体广播组播业务 CDM方式和协调 TDM方式形成 的一种混合方法;
图 14为本发明实现多媒体广播组播业务共享时隙的发送方法流程图; 图 15 为本发明多媒体广播组播业务共享时隙发送方法实施例中两个 MBMS业务占用承载资源的示意图;
图 16为本发明实现多媒体广播组播业务共享时隙的接收方法流程图。 具体实施方式
本发明提供多媒体广播组播业务 CDM发送、 接收方法及设备, 基本思想 是: 将用于承载 MBMS业务的时隙划分为多个码道,用来承载多个待发送的数 据速率较小的 MBMS业务,从而使得一个时隙可以同时发送多个数据速率较小 的 MBMS业务, 合理、 充分地利用了时隙资源。
如图 4所示, 为实现多媒体广播组播业务 CDM发送方法流程图, 包括步 骤:
S101 : 在 TDD***中设定用一个时隙, 基于 MBSFN模式发送 MBMS业 务, 并根据 MBMS业务中心要求该 TDD***同时发送的、 数据速率小于预定 速率(例如 192kbps )的 MBMS业务数量, 对该设定的时隙划分码道, 用来承 载待发送的各 MBMS业务; 如图 5所示, 当 MBMS业务中心要求该 TDD系 统同时发送 n个速率小于预定速率的 MBMS业务时, 如果 n=2y ( n,yeN ), 则 对该用于承载多媒体广播組播业务的时隙执行 n个码分,为每个待发送 MBMS 业务分配一个码道, 如果 2y-l<n<2y时, 则对该用于承载多媒体广播组播业务 的时隙执行 2y个码分,将 2y个码道分配给 n个待发送的多媒体广播组播业务, 允许各 MBMS业务占用的码道数目不相等。 例如: 如图 6所示, TDD***设 定用时隙 TS2基于 MBSFN模式,同时发送 3个数据速率低于预定值的 MBMS 业务, 由于 21<3<22, 故在时隙 TS2上划分 4个码道, 用来承载 3个待发送 MBMS业务, 其中 TDD***为 MBMS业务 1分配时隙 TS2的第一码道, 为 MBMS业务 2分配时隙 TS2的第二码道, 为 MBMS业务 3分配时隙 TS2的第 三、 第四码道, 当然这 3个待发送 MBMS业务, 也可以按照其他方式占用时隙 TS2中的 4个码道。
S102: 将待发送的各 MBMS业务码分复用到用于承载 MBMS业务的该设 定时隙的各码道上, 基于 MBSFN模式发送给 UE; 其中, 发送前基于相同的扰 码 ID对同一多媒体广播組播业务时隙中各码道上承载的各多媒体广播组播业 务进行调制。
如图 7所示, 为实现多媒体广播组播业务 CDM接收方法流程图, 包括步 骤:
在发送 MBMS业务前, ***设定 MBMS业务时隙中的各码道对其承载的 MBMS业务分别进行调制, 各码道调制时所使用的扰码 ID保持一致。
S110:UE获取各 MBMS业务控制信息, MBMS业务控制信息包括各多媒 体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信息;
S120:UE基于获取的各多媒体广播组播业务占用的码道信息, 在用于承载 多媒体广播组播业务的时隙的相应码道上,接收对应的各多媒体广播组播业务。
其中, UE可以根据需要只对自己感兴趣的 MBMS业务进行接收。 例如, 对于采用如图 6所示的码道分配方式的三个 MBMS业务,***基于控制信息指 示 UE, MBMS业务 2在时隙 TS2的第二个码道上进行发送, 这样只对 MBMS 业务 2感兴趣的 UE可以根据该信息只接收承载在时隙 TS2中第二个码道上的 MBMS业务 2。
为实现上述 MBMS业务的 CDM发送及其接收处理方式, 需要 MBMS业 务发送设备中包括: 码道划分单元, 用于在用于承载多媒体广播组播业务的时隙上划分码道; 发送单元, 用于将各待发送的多媒体广播组播业务, 承载到码道划分单元 划分出的相应码道上, 基于多媒体广播组播业务单频网模式发送给用户设备。
相应的, 需要 MBMS业务接收设备中包括:
码道信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取各多 媒体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信息; 接收单元, 用于基于码道信息获取单元获取的各多媒体广播组播业务占用 的码道信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接收对应 的各多媒体广播组播业务。
上述在 MBMS业务发送设备、 MBMS业务接收设备中为实现本发明 MBMS 的 CDM发送及其接收方式所需增加的处理单元, 一方面可以基于软件程序来 实现。 另一方面也可以基于对现有的硬件进行改进升级来实现。
此外, 本发明提供多媒体广播组播业务协调 TDM发送、 接收方法及设备, 合理、 充分地利用了时隙资源, 而且有利于 UE的非连续接收(non-DRX )。
如图 8所示, 为实现 MBMS协调 TDM发送方法流程图, 包括步骤:
S201 :在 TDD***中设定用一个时隙,基于 MBSFN发送模式发送 MBMS 业务, 并根据 MBMS业务中心要求该 TDD***发送的 MBMS业务的数量和 数据速率, TDD***为待发送的各 MBMS业务分配时隙资源,包括:各 MBMS 业务占用的重复调度间隔、各 MBMS业务在占用的重复调度间隔内的调度起止 点、各 MBMS业务所在重复调度间隔的长度; 其中, 重复调度间隔可以是通用 移动通信*** ( UMTS, Universal Mobile Telecommunications System ) 中的非 连续接收周期 DRX cycle, DRX cycle大约在 160ms到 1280ms之间, 而且以 倍乘递增,即 DRX cycle =k-160ms, ( k<9, keN )。如图 9所示,在一个 DRX cycle 内会出现 k, 160 ms/5 mS即 k' 32个子帧,又由于 7个常规业务时隙中的任意一个 时隙都在一个子帧中出现一次,所以在一个 DRX cycle中包含 k'32个设定时隙, 根据 MBMS 业务中心要求该 TDD ***同时发送的数据速率小于预定值的 MBMS 业务的数量和数据速率, 确定如何为各待发送 MBMS 业务分配一个 DRX cycle中包含的 k' 32个用于承载 MBMS业务的时隙, 对数据速率较大的 MBMS业务可以分配较多的连续时隙, 对数据速率较小的 MBMS业务可以分 配较少的连续时隙,但为每个待发送 MBMS业务需要占用的设定时隙个数都是 8的整数倍, 即每个待发送 MBMS业务需要占用 40ms的整数倍;
比如: 如图 10所示, TDD***设定用 TS2时隙基于 MBSFN发送模式发 送 MBMS业务, MBMS业务中心要求该 TDD***发送 MBMS业务 1、 MBMS 业务 2和 MBMS业务 3, 根据三个待发送 MBMS业务的数据速率, TDD系 统为待发送的各 MBMS业务分配时隙资源: 为三个待发送 MBMS业务分配 3 个长度为 640ms的 DRX cycle: DRXO cycle、 DRX1 cycle、 DRX2 cycle, 其中, 基于 DRXO cycle的第 1至第 24个子帧中的所有时隙 TS2来承载 MBMS业务 1, 基于第 25至第 64个子帧中的所有时隙 TS2来承载 MBMS业务 2, 基于第 65 至笫 128个子帧中的所有时隙 TS2来承载 MBMS业务 3;此外基于 DRX1 cycle 的第 1至第 24个子帧中的所有时隙 TS2来承载 MBMS业务 1、 基于第 25至 第 128个子帧中的所有时隙 TS2来承载 MBMS业务 2; 此外基于 DRX2 cycle 的第 1至第 40个子帧中的所有时隙 TS2来承载 MBMS业务 1 ,基于第 41至第 128个子帧中的所有时隙 TS2来承载 MBMS业务 3。
另外 , TDD***可以为待发送的 MBMS业务分配不连续的重复调度间隔, 比如上例所述 MBMS业务 3被分配在第一个重复调度间隔和第三个重复调度间 隔, 即 MBMS业务 3所分得的重复调度间隔不连续。
S202:将各待发送 MBMS业务, 承载到 TDD***为其分配的时隙资源上, 基于 MBSFN模式发送给 UE; 如图 10所示, 在 DRXO cycle的前 120ms用 24 个 TS2时隙承载 MBMS业务 1发送给 UE, 在接下来的 200 ms内用 40个 TS2 时隙承载 MBMS业务 2发送给 ΌΈ, 在余下的 320ms内用 64个 TS2时隙承载 MBMS业务 3发送给 UE; 在下一个重复间隔周期 DRX1 cycle的前 120ms用 24个 TS2时隙承载 MBMS业务 1发送给 UE, 余下的 520ms用 104个 TS2时 隙承载 MBMS业务 2发送给 UE;在第三个重复间隔周期 DRX2 cycle的前 200ms 用 40个 TS2时隙承载 MBMS业务 1发送给 UE, 余下的 440ms用 88个 TS2 时隙承载 MBMS业务 3发送给 ΌΕ。
如图 11所示, 为实现 MBMS协调 TDM接收方法流程图, 包括步驟: S210:用户设备基于当前各多媒体广播组播业务控制信息,获取当前各多媒 体广播组播业务的传输调度参数, 每个当前 MBMS业务的传输调度参数包括: DRX周期 DRX Cycle用于指明当前 MBMS业务所在重复调度间隔, 起始偏移 Start Offset用于指明该 MBMS业务调度起始在 DRX Cycle内的偏移, 持续调 度时长 Duration用于指明一个 DRX周期内该 MBMS业务的持续发送时间(其 中,参数 Start Offset和 Duration共同指明在 DRX周期内用于传输该 MBMS业 务的时隙), 下一调度间隔 Next interval用于指明该 MBMS业务所在的下一重 复调度间隔;
S220:基于传输调度参数的指示,在用于承载当前各多媒体广播组播业务的 相应重复调度间隔内的相应时隙上, 接收各多媒体广播组播业务, 并准备在承 载各多媒体广播組播业务的下一重复调度间隔内接收各多媒体广播组播业务。
其中, 对于占用连续重复调度间隔的 MBMS业务, UE需要连续接收, 对 于占用不连续重复调度间隔的 MBMS业务, UE可以选择 DR 方式接收, 如 图 12所示, 若只接收 MBMS业务 3 , UE可以选择 DR 接收方式: 由 MBMS 业务 3控制信令得到 MBMS业务 3的发送调度参数: DRX0 Cycie=640ms Start Offset=320ms、 Duration=320ms、 Next interval=DRX2 Cycle, 指示 UE在长度为 640ms的重复调度间隔 DRX0 Cycle内的第 320 ms到第 640ms( 320 ms+320 ms ) 的时隙 TS2接收 MBMS业务 3 , 并准备在重复调度间隔 DRX2 Cycle接收 MBMS业务 3数据; DRX2 Cycle=640ms> Start Offset=200ms、 Duration=440ms、 Next interval=NULL, 指示 UE在长度为 640ms的重复调度间隔 DRX2 Cycle内 的第 200 ms到第 640ms ( 200 ms+440 ms ) 的时隙 TS2接收 MBMS业务 3数 据。 为实现上述 MBMS业务的协调 TDM发送及其接收处理方式,需要 MBMS 业务发送设备中包括:
承载资源分配单元, 用于为各待发送多媒体广播组播业务分配重复调度间 隔和重复调度间隔内的用于承载多媒体广播组播业务的时隙 , 用来承载各待发 送多媒体广播组播业务;
发送单元, 用于将各待发送多媒体广播組播业务, 承载到承载资源分配单 元分配的相应重复调度间隔内的相应时隙上, 基于多媒体广播组播业务单频网 模式发送给用户设备。
相应的, 需要 MBMS业务接收设备中包括:
传输调度参数获取单元, 用于基于当前各多媒体广播组播业务控制信息 , 获取当前各多媒体广播组播业务的传输调度参数, 所述传输调度参数用于指明 各多媒体广播组播业务所在的当前重复调度间隔、 所在重复调度间隔内的时隙 以及各多媒体广播组播业务所在的下一重复调度间隔;
接收单元, 用于基于传输调度参数的指示, 在用于承载当前各多媒体广播 组播业务的相应重复调度间隔内的相应时隙上, 接收各多媒体广播组播业务, 并准备在承载各多媒体广播组播业务的下一重复调度间隔内接收各多媒体广播 组播业务。
MBMS发送方法还可以综合 CDM方式和协调 TDM方式, 如图 13所示, 为 CDM方式和协调 TDM方式的一种混合方法。
例如, 在协调 TDM方式下, 对于发送方法, 所述时分双工***在用于承 载多媒体广播组播业务的时隙上划分码道, 将各待发送的多媒体广播组播业务 承载到划分出的相应码道上。
作为本发明的实施例, 所述在用于承载多媒体广播组播业务的时隙上划分 码道的步骤具体包括: 确定待发送的多媒体广播组播业务数目 n; 如果 n=2y ( n,ye N ), 则对一个用于承载多媒体广播组播业务的时隙执行 n个码分, 为每 个待发送的多媒体广播组播业务分配一个码道; 如果 2y-l<n<2y, 则对一个用 于承载多媒体广播组播业务的时隙执行 2y个码分, 将 2y个码道分配给 n个待 发送的多媒体广播组播业务。
作为本发明的实施例, 用于承载各待发送多媒体广播组播业务的码道数目 不相等。
作为本发明的实施例, 基于相同的扰码 ID对同一多媒体广播组播业务时 隙中各码道上承载的多媒体广播组播业务进行调制。
相应地, 对于发送设备, 所述承载资源分配单元还包括码道划分单元, 所 述码道划分单元用于在用于承载多媒体广播组播业务的时隙上划分码道; 且所 述发送单元, 用于将各待发送的多媒体广播组播业务, 承载到码道划分单元划 分出的相应码道上, 基于多媒体广播组播业务单频网模式发送给用户设备。
对于接收方法, 还应该包括以下步骤: 用户设备基于各多媒体广播组播业 务控制信息, 获取各多媒体广播组播业务占用用于承载多媒体广播组播业务的 时隙上的码道信息; 以及基于获取的各多媒体广播组播业务占用的码道信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接收对应的各多媒体广 播组播业务。
相应地, 对于接收设备, 所述传输调度参数获取单元还包括码道信息获取 单元, 所述码道信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获 取各多媒体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信 息; 且所述接收单元, 用于基于码道信息获取单元获取的各多媒体广播组播业 务占用的码道信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接 收对应的各多媒体广播组播业务。
上述在 MBMS业务发送设备、 MBMS业务接收设备中为实现本发明 MBMS 的综合 CDM和协调 TDM发送及其接收方式所需增加的处理单元,一方面可以 基于软件程序来实现。另一方面也可以基于对现有的硬件进行改进升级来实现。
本发明还提供一种 MBMS共享时隙发送、接收方法及设备,为不适宜用整 数个时隙进行发送的 MBMS分配整数个完整的时隙和一个额外时隙的部分码 道, 一个额外时隙可以借用给多个待发送的 MBMS业务共用,合理、 充分利用 了时隙资源。
如图 14所示, 为实现 MBMS共享时隙的发送方法流程图, 包括步骤: S301:在 TDD***中设定用 m个时隙基于 MBSFN模式发送 MBMS业务, 当 MBMS业务中心要求该 TDD***同时发送数据速率大于一定预设值 (例如 512kbps )的多个 MBMS业务时, 对于不适宜用整数个完整时隙承载的 MBMS 业务, TDD ***为其分配整数个完整时隙 (例如一个时隙)再加上一个额外 时隙中的若干码道,来承载该待发送的 MBMS业务,根据借用一个额外时隙的 MBMS业务数目对该借用的额外时隙划分码道,如果借用该额外时隙的 MBMS 业务数目 n=2y ( n,yeN ), 则对该借用的额外时隙执行 n个码分, 为每个借用该 额外时隙的待发送多媒体广播组播业务分配一个码道; 如果 2y-l<n<2y, 则对 该借用的额外时隙执行 2y个码分,为 n个借用该额外时隙的待发送多媒体广播 组播业务分配 2y个码道, 允许各 MBMS业务占用的码道数目不相等。 另外, 对于数据速率适宜用整数个完整时隙承载的 MBMS业务, TDD***为其分配 整数个完整时隙, 来承载该待发送的 MBMS业务。
S302:将待发送的各 MBMS业务承载到用于承载各 MBMS业务的对应整数 时隙以及额外时隙对应的码道上, 按 MBSFN模式发送给 UE; 其中, 在发送 MBMS业务前,基于同一扰码 ID对整数个完整时隙上承载的同一 MBMS业务 进行调制, 另外, 基于同一扰码 ID对同一额外时隙中各码道上承载的 MBMS 业务进行调制。比如: MBMS业务 1被承载到 TS1和 TS2的整个时隙以及 TS3 8个码道中的前三个码道上,则承载 MBMS业务 1的两个完整时隙 TS1和 TS2 在调制 MBMS业务 1数据时所使用的扰码 ID一致,承载 MBMS业务 1的 TS3 中的前三个码道在调制 MBMS业务 1数据时所使用的扰码 ID一致。
实现 MBMS共享时隙的发送方法的一个实施例, 包括步骤:
S3001:—个 TDD***设定利用 TS1、 TS2、 TS3三个时隙基于 MBSFN发 送模式发送 MBMS业务, 若 MBMS业务中心要求该 TDD***同时发送 2个 业务, 而且这 2个业务的数据速率均大于一个时隙的承载能力而小于两个时隙 的承载能力, 如图 15所示, TDD***为待发送 MBMS业务 1和 MBMS业务
2借用 TS2时隙作为额外时隙, 将额外时隙 TS2划分为两个码道。
S3002:将待发送 MBMS业务 1承载到完整的 TS1时隙和 TS2时隙的笫一 个码道上, 待发送 MBMS业务 2承载到 TS2时隙的第二个码道和完整的 TS3 时隙上, 基于 MBSFN模式发送给 UE。
如图 16所示, 为实现 MBMS共享时隙的接收方法流程图, 包括步骤: S310: 用户设备基于各多媒体广播组播业务控制信息, 获取各多媒、体广播 组播业务占用用于承载多媒体广播组播业务的完整时隙信息, 和额外时隙上的 码道信息;
S320:用户设备基于获取的各多媒体广播组播业务占用的完整时隙信息,和 额外时隙上的码道信息, 在用于承载各多媒体广播组播业务的对应完整时隙上 和额外时隙的相应码道上, 接收各多媒体广播组播业务。
其中, 订阅了上述所发送 MBMS业务的 UE, 也可以根据自己的需要接收 所发送 MBMS业务中的某些 MBMS业务。
基于上述实现 MBMS共享时隙的发送方法实施例, 实现 MBMS共享时隙 的接收方法的一个实施例:
S3010:订阅了上述所发送的 MBMS业务的 UE,基于 MBMS业务 1控制信 息,获取 MBMS业务 1占用用于承载 MBMS业务的整个 TS1时隙和 TS2时隙 第一码道的信息, 和 MBMS业务 2占用用于承载 MBMS业务的 TS2时隙第二 个码道和整个 TS3时隙的信息。
S3020:用户设备基于获取的 MBMS业务 1、 MBMS业务 2占用的完整时隙 信息, 和额外时隙上的码道信息, 在整个 TS1时隙和 TS2时隙第一码道上, 接 收 MBMS业务 1, 在 TS2时隙第二个码道和整个 TS3时隙上, 接收 MBMS业 务 2。
其中, UE也可以根据自己的需要只接收上述所发送的 MBMS业务中的某 些 MBMS业务, 比如只在 TS2时隙笫二个码道和整个 TS3时隙上接收 MBMS 业务 2。
为实现上述 MBMS业务的时隙共享发送及其接收处理方式, 需要 MBMS 业务发送设备中包括:
码道划分单元, 用于在用来承载多媒体广播组播业务的时隙内, 为待发送 的多媒体广播组播业务要借用的额外时隙划分码道;
发送单元, 用于将各待发送的多媒体广播组播业务承载到整数个用来承载 多媒体广播组播业务的时隙内, 以及借用的码道划分单元划分的一个额外时隙 内的码道上, 基于多媒体广播组播业务单频网模式发送给用户设备;
相应的, 需要 MBMS业务接收设备中包括:
承载信息获取单元, 基于各多媒体广播组播业务控制信息, 获取各多媒体 广播组播业务占用用于承载多媒体广播组播业务的完整时隙信息, 和额外时隙 上的码道信息;
接收单元, 用于基于承载信息获取单元获取的各多媒体广播组播业务占用 的完整时隙信息, 和额外时隙上的码道信息, 在用于承载各多媒体广播组播业 务的对应完整时隙上和额外时隙的相应码道上 , 接收各多媒体广播组播业务。
上述在 MBMS业务发送设备、 MBMS业务接收设备中为实现本发明 MBMS 的时隙共享发送及其接收方式所需增加的处理单元, 一方面可以基于软件程序 来实现。 另一方面也可以基于对现有的硬件进行改进升级来实现。
此外, MBMS发送方法还可以综合以上所述方法, 根据待发送 MBMS业 务的实际情况, 对其他方法进行综合使用。 明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要求及 其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
1、 一种多媒体广播组播业务发送方法, 其特征在于, 包括步骤: 时分双工***在用于承载多媒体广播组播业务的时隙上划分码道; 将各待发送的多媒体广播组播业务承载到划分出的相应码道上, 基于多媒 体广播组播业务单频网模式发送给用户设备。
2、如权利要求 1所述的方法, 其特征在于, 所述在用于承载多媒体广播组 播业务的时隙上划分码道的步骤具体包括:
确定待发送的多媒体广播组播业务数目 n;
如果 n=2y ( n,yeN ), 则对一个用于承载多媒体广播组播业务的时隙执行 n 个码分, 为每个待发送的多媒体广播组播业务分配一个码道;
如果 2y-l<n<2y, 则对一个用于承载多媒体广播组播业务的时隙执行 2y 个码分, 将 2y个码道分配给 n个待发送的多媒体广播组播业务。
3、如权利要求 1或 2所述的方法, 其特征在于, 用于承载各待发送多媒体 广播组播业务的码道数目不相等。
4、 如权利要求 1或 2所述的方法, 其特征在于, 基于相同的扰码 ID对同 一多媒体广播组播业务时隙中各码道上承载的多媒体广播组播业务进行调制。
5、 一种多媒体广播组播业务接收方法, 其特征在于, 包括步骤: 用户设备基于各多媒体广播组播业务控制信息, 获取各多媒体广播组播业 务占用用于承载多媒体广播组播业务的时隙上的码道信息; 以及
基于获取的各多媒体广播組播业务占用的码道信息, 在用于承载多媒体广 播组播业务的时隙的相应码道上, 接收对应的各多媒体广播组播业务。
6、 一种多媒体广播组播业务发送设备, 其特征在于, 包括:
码道划分单元, 用于在用于承载多媒体广播组播业务的时隙上划分码道; 发送单元, 用于将各待发送的多媒体广播组播业务, 承载到码道划分单元 划分出的相应码道上 , 基于多媒体广播组播业务单频网模式发送给用户设备。
7、 一种多媒体广播组播业务接收设备, 其特征在于, 包括: 码道信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取各多 媒体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信息; 接收单元, 用于基于码道信息获取单元获取的各多媒体广播组播业务占用 的码道信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接收对应 的各多媒体广播组播业务。
8、 一种多媒体广播组播业务发送方法, 其特征在于, 包括步骤:
时分双工***为各待发送多媒体广播组播业务分配重复调度间隔和重复调 度间隔内的用于承载多媒体广播组播业务的时隙, 用来承载各待发送多媒体广 播组播业务;
将各待发送多媒体广播组播业务承载到相应重复调度间隔内的相应时隙 上, 基于多媒体广播组播业务单频网模式发送给用户设备。
9、如权利要求 8所述的方法, 其特征在于, 所述时分双工***为各待发送 多媒体广播组播业务分配的重复调度间隔不连续。
10、 如权利要求 8所述的方法, 其特征在于, 所述时分双工***在用于承 载多媒体广播组播业务的时隙上划分码道, 将各待发送的多媒体广播组播业务 承载到划分出的相应码道上。
11、 如权利要求 10所述的方法, 其特征在于, 所述在用于承载多媒体广播 组播业务的时隙上划分码道的步驟具体包括:
确定待发送的多媒体广播组播业务数目 n;
如果 n=2y ( n,yeN ), 则对一个用于承载多媒体广播组播业务的时隙执行 n 个码分, 为每个待发送的多媒体广播组播业务分配一个码道;
如果 2y-l<n<2y, 则对一个用于承载多媒体广播组播业务的时隙执行 2y 个码分, 将 2y个码道分配给 n个待发送的多媒体广播组播业务。
12、 如权利要求 10或 11所述的方法, 其特征在于, 用于承载各待发送多 媒体广播组播业务的码道数目不相等。
13、 如权利要求 10或 11 所述的方法, 其特征在于, 基于相同的扰码 Π) 对同一多媒体广播组播业务时隙中各码道上承载的多媒体广播组播业务进行调 制。
14、 一种多媒体广播组播业务接收方法, 其特征在于, 包括步骤: 用户设备基于当前各多媒体广播组播业务控制信息 , 获取当前各多媒体广 播组播业务的传输调度参数, 所述传输调度参数用于指明各多媒体广播组播业 务所在的当前重复调度间隔、 所在重复调度间隔内的时隙以及各多媒体广播组 播业务所在的下一重复调度间隔; 以及
基于传输调度参数的指示, 在用于承载当前各多媒体广播组播业务的相应 重复调度间隔内的相应时隙上, 接收各多媒体广播组播业务, 并准备在承载各 多媒体广播组播业务的下一重复调度间隔内接收各多媒体广播组播业务。
15、如权利要求 14所述方法, 其特征在于, 所述用户设备基于非连续接收 方式接收各多媒体广播组播业务。
16、 如权利要求 14所述方法, 其特征在于, 还包括步骤:
用户设备基于各多媒体广播组播业务控制信息 , 获取各多媒体广播组播业 务占用用于承载多媒体广播組播业务的时隙上的码道信息; 以及
基于获取的各多媒体广播组播业务占用的码道信息, 在用于承载多媒体广 播组播业务的时隙的相应码道上, 接收对应的各多媒体广播组播业务。
17、 一种多媒体广播组播业务发送设备, 其特征在于, 包括:
承载资源分配单元, 用于为各待发送多媒体广播组播业务分配重复调度间 隔和重复调度间隔内的用于承载多媒体广播组播业务的时隙 , 用来承载各待发 送多媒体广播组播业务;
发送单元, 用于将各待发送多媒体广播组播业务, 承载到承载资源分配单 元分配的相应重复调度间隔内的相应时隙上, 基于多媒体广播组播业务单频网 模式发送给用户设备。
18、 如权利要求 17所述的设备, 其特征在于, 所述承载资源分配单元还包 括码道划分单元, 所述码道划分单元, 用于在用于承载多媒体广播组播业务的时隙上划分码 道; 且所述发送单元, 用于将各待发送的多媒体广播组播业务, 承载到码道划 分单元划分出的相应码道上, 基于多媒体广播组播业务单频网模式发送给用户 设备。
19、 一种多媒体广播组播业务接收设备, 其特征在于, 包括:
传输调度参数获取单元, 用于基于当前各多媒体广播组播业务控制信息, 获取当前各多媒体广播组播业务的传输调度参数, 所述传输调度参数用于指明 各多媒体广播组播业务所在的当前重复调度间隔、 所在重复调度间隔内的时隙 以及各多媒体广播组播业务所在的下一重复调度间隔;
接收单元, 用于基于传输调度参数的指示, 在用于承载当前各多媒体广播 组播业务的相应重复调度间隔内的相应时隙上, 接收各多媒体广播組播业务, 并准备在承载各多媒体广播组播业务的下一重复调度间隔内接收各多媒体广播 组播业务。
20、 如权利要求 19所述的设备, 其特征在于, 所述传输调度参数获取单元 还包括码道信息获取单元,
所述码道信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取 各多媒体广播组播业务占用用于承载多媒体广播组播业务的时隙上的码道信 息; 且所述接收单元, 用于基于码道信息获取单元获取的各多媒体广播组播业 务占用的码道信息, 在用于承载多媒体广播组播业务的时隙的相应码道上, 接 收对应的各多媒体广播组播业务。
21、 一种多媒体广播组播业务发送方法, 其特征在于, 包括步骤: 时分双工***在用来承载多媒体广播组播业务的时隙内 , 对待发送的多媒 体广播组播业务要借用的额外时隙划分码道;
将各待发送的多媒体广播组播业务承载到整数个用来承载多媒体广播组播 业务的时隙内, 以及借用的一个额外时隙内的码道上, 基于多媒体广播组播业 务单频网模式发送给用户设备。
22、如权利要求 21所述方法, 其特征在于, 所述对额外时隙划分码道的步 骤具体包括:
确定借用该额外时隙的待发送多媒体广播组播业务数目 n;
如果 n=2y ( n,yeN ), 则对该借用的额外时隙执行 n个码分, 为每个借用该 额外时隙的待发送多媒体广播组播业务分配一个码道;
如果 2y-l<n<2y, 则对该借用的额外时隙执行 2y个码分, 为 n个借用该额 外时隙的待发送多媒体广播组播业务分配 2y个码道。
23、如权利要求 21或 22所述的方法, 其特征在于, 在借用的额外时隙中, 用于承载各待发送多媒体广播组播业务的码道数目不相等。
24、 如权利要求 21或 22所述的方法, 其特征在于, 基于相同的扰码 ID 对借用的额外时隙中的码道上承载的同一多媒体广播组播业务进行调制; 以及 基于相同的扰码 ID对整数个完整时隙内承载的多媒体广播组播业务进行调制。
25、 一种多媒体广播组播业务接收方法, 其特征在于, 包括步骤: 用户设备基于各多媒体广播组播业务控制信息, 获取各多媒体广播组播业 务占用的用于承载多媒体广播组播业务的完整时隙信息, 和额外时隙上的码道 信息;
用户设备基于获取的各多媒体广播组播业务占用的完整时隙信息, 和额外 时隙上的码道信息, 在用于承载各多媒体广播组播业务的对应完整时隙上和额 外时隙的相应码道上, 接收各多媒体广播组播业务。
26、 一种多媒体广播组播业务发送设备, 其特征在于, 包括:
码道划分单元, 用于在用来承载多媒体广播组播业务的时隙内, 对待发送 的多媒体广播组播业务要借用的额外时隙划分码道;
发送单元, 用于将各待发送的多媒体广播组播业务承载到整数个用来承载 多媒体广播组播业务的时隙内, 以及码道划分单元划分的一个额外时隙内的码 道上, 基于多媒体广播组播业务单频网模式发送给用户设备。
27、 一种多媒体广播组播业务接收设备, 其特征在于, 包括: 承载信息获取单元, 用于基于各多媒体广播组播业务控制信息, 获取各多 媒体广播组播业务占用的用于承载多媒体广播组播业务的完整时隙信息, 和额 外时隙上的码道信息;
接收单元, 用于基于承载信息获取单元获取的各多媒体广播组播业务占用 的完整时隙信息, 和额外时隙上的码道信息, 在用于承载各多媒体广播组播业 务的对应完整时隙上和额外时隙的相应码道上, 接收各多媒体广播组播业^^
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US8755321B2 (en) 2014-06-17

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