WO2008000180A1 - Procédés et systèmes d'harmonisation de ressources de services de diffusion multimédia/multidiffusion dans des cellules avoisinantes - Google Patents

Procédés et systèmes d'harmonisation de ressources de services de diffusion multimédia/multidiffusion dans des cellules avoisinantes Download PDF

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Publication number
WO2008000180A1
WO2008000180A1 PCT/CN2007/070138 CN2007070138W WO2008000180A1 WO 2008000180 A1 WO2008000180 A1 WO 2008000180A1 CN 2007070138 W CN2007070138 W CN 2007070138W WO 2008000180 A1 WO2008000180 A1 WO 2008000180A1
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Prior art keywords
cell
mbms service
resource
base station
ordinating function
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PCT/CN2007/070138
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English (en)
Chinese (zh)
Inventor
Peng Lin
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008000180A1 publication Critical patent/WO2008000180A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to the field of multi-carrier technology, and in particular, to a method and system for coordinating multimedia broadcast/multicast service resources of adjacent cells. Background of the invention
  • Orthogonal Frequency Division Multiplexing (OFDM) technology is a relatively representative technique in multi-carrier technology. It divides a given channel into many orthogonal subchannels in the frequency domain and allows subcarrier frequency. Partially overlapping, the data signals can be separated from the aliased subcarriers as long as the subcarriers are orthogonal to each other.
  • a basic OFDM modulation and demodulation process is shown in Figure 1. Referring to Figure 1, in an OFDM system, user data is first subjected to channel coding and interleaving, and a modulation method such as two-phase phase shift keying (BPSK) is employed. ), four-phase phase shift keying (QPSK), quadrature amplitude modulation (QAM), etc.
  • BPSK phase shift keying
  • QPSK quadrature amplitude modulation
  • each data stream is passed through an inverse discrete Fourier transform (IDFT) or an inverse fast Fourier transform (IFFT).
  • IDFT inverse discrete Fourier transform
  • IFFT inverse fast Fourier transform
  • CP cyclic prefix
  • parallel/serial conversion the process of receiving data is the opposite of sending data, first removing the cyclic prefix and performing serial/parallel conversion, and then passing Discrete Fourier Transform (DFT) or Fast Fu A Fourier Transform (FFT) maps each subcarrier to a data stream separately for parallel/serial conversion.
  • OFDM technology greatly reduces or even eliminates inter-symbol interference and ensures orthogonality between channels, thereby greatly reducing inter-channel interference.
  • the third generation partner mobile communication global standardization organization proposed the multimedia broadcast/multicast service (MBMS) service of the mobile communication network, thereby providing one data from the mobile communication network.
  • the source sends multi-point services to multiple users, realizes network resource sharing, and improves the utilization of network resources, especially the air interface resources.
  • the MBMS proposed by MBS can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service multicast and broadcast. It is described in detail in R6 version using Wideband Code Division Multiple Access (WCDMA).
  • WCDMA Wideband Code Division Multiple Access
  • MBMS point-to-multipoint control channel MCCH
  • MMS point-to-multipoint Scheduling Channel MMS
  • MBMS point-to-multipoint transmission channel MBMS point-to-multipoint Traffic Channel, MTCH
  • the current 3G system adopts a code division multiple access (CDMA) system, and adjacent cells can have different MBMS services without air interface merging.
  • CDMA code division multiple access
  • LTE Long Term Evolution
  • LTE MBMS proposes to add a functional entity Co-ordinating Function in the network, but how to deal with a network device such as a base station
  • the Co-ordinating Function cooperates to adjust the neighboring cell MBMS service resources so that the neighboring cells use the same resource to transmit the same service, so as to solve the problem of cell edge air interface merging interference, and no specific solution has been given.
  • an embodiment of the present invention provides a method for coordinating MBMS service resources of a neighboring cell, where the method includes: sending an MBMS service resource request message to a first gateway to which the base station covering the first 'j, the area belongs Receiving, by the first Co-ordinating Function, a response message that includes a resource coordination result, where the resource coordination result is obtained by the first Co-ordinating Function according to a resource status of the first cell and the neighboring second cell; Adjust the MBMS service resources of the first cell.
  • the embodiment of the present invention further provides a system that can be used to coordinate MBMS service resources of a neighboring cell, where the system includes a first base station that covers the first cell, a first gateway to which the first cell belongs, and a first gateway corresponding to the first gateway. a second Co-ordinating Function corresponding to the second cell of the second cell adjacent to the first zone, the second gateway to which the second cell belongs, and a second Co-ordinating Function corresponding to the second gateway, where
  • the first base station is configured to send an MBMS service resource request message to the first Co-ordinating Function, and adjust an MBMS service resource of the first cell according to the response message from the first Co-ordinating Function;
  • the first Co-ordinating Function is configured to return the resource coordination result obtained according to the resource status of the first cell and the second cell to the first base station by using a response message.
  • the embodiment of the present invention adjusts the MBMS service resources of the neighboring cell by using the information exchange between the base station that covers the neighboring cell and the associated Co-ordinating Function, so that the neighboring cell is in the neighboring cell.
  • the MBMS service solves the interference problem in the case of air interface merging at the edge of a neighboring cell in the case of multiple MBMS services transmitted in a neighboring cell.
  • the present invention provides a variety of information interaction methods, which are very flexible to implement. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 2 is a schematic flow chart of a first embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a second embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a third embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a fourth embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a fifth embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a sixth embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a seventh embodiment of the present invention. Mode for carrying out the invention
  • the cell 1 and the cell 2 are adjacent to each other, and the system includes a first base station that covers the cell 1, a first gateway to which the cell 1 belongs, a first Co-ordinating Function corresponding to the first gateway, and a second base station that covers the cell 2.
  • the first base station may send an MBMS service resource request message to the first Co-ordinating Function through the first gateway, or may directly send an MBMS service resource request message to the first Co-ordinating Function, where the first Co-ordinating Function is based on the cell.
  • the resource coordination result obtained by the resource status of the cell 2 and the cell 2 is returned to the first base station through the response message, and the first base station adjusts the MBMS service resource of the cell 1 according to the response message from the first Co-ordinating Function.
  • the resource status of the cell 1 and the cell 2 in the embodiment of the present invention may include the MBMS service in the cell 1 and the cell 2 and the resources occupied by the cell.
  • the first gateway and the second gateway may be the same gateway, and the first Co-ordinating Function and the second Co-ordinating Function are the same Co-ordinating Function 0. If the first base station and the second base station are the same base station, A gateway and a second gateway are the same gateway, and the first Co-ordinating Function and the second Co-ordinating Function are the same Co-ordinating Function. At this time, the first Co-ordinating Function may be further used to return the resource coordination result to the second base station by using a response message, and the second base station is configured to adjust the MBMS service resource of the cell 2 by using the response message.
  • first gateway and the second gateway may be different gateways, and the first Co-ordinating Function and the second Co-ordinating Function are different Co-ordinating Functions, and the first base station and the second base station are different base stations.
  • the first Co-ordinating Function may be further used to send a synchronization message carrying the resource coordination result to the second Co-ordinating Function.
  • the second Co-ordinating Function may be further configured to send an indication message for adjusting the cell 2 MBMS service resource to the second base station, and the second base station is configured to adjust the MBMS service resource of the cell 2 according to the indication message.
  • the second Co-ordinating Function may also be used to return the adjusted resource coordination result to the first Co-ordinating Function, and the first Co-ordinating Function returns the adjusted resource coordination result to the first base station by using the response message.
  • the first Co-ordinating Function and the second Co-ordinating Function are in a parallel relationship. Further, in the system that can be used to coordinate the MBMS service resources of the neighboring cell in the embodiment of the present invention, the third Co-ordinating may be further included. Function, the third Co-ordinating Function may be composed of a single Co-ordinating Function, or may be composed of multiple Co-ordinating Functions.
  • the first Co-ordinating Function and/or the second Co-ordinating Function after receiving the MBMS service resource request message of the corresponding base station, the first Co-ordinating Function and/or the second Co-ordinating Function sends an MBMS resource coordination request to the third Co-ordinating Function, by The third Co-ordinating Function sends the resource coordination result to the first Co-ordinating Function and/or the second Co-ordinating Function, and then is returned to the first Co-ordinating Function and/or the second Co-ordinating Function through the response message.
  • Corresponding base station With this multiple Co-ordinating Function with hierarchical relationship, complex interactions between parallel Co-ordinating Functions can be avoided.
  • the third Co-ordinating Function may be located at its corresponding gateway, the base station, or located at the first gateway, the base station covering the first cell, the second gateway, the base station covering the second cell, or an independent device.
  • the above system may be located in a 3G network or a 3G LTE network, or may be located in other mobile communication networks.
  • the following embodiments illustrate the implementation of the present invention by taking an application in a 3G LTE network as an example.
  • each gateway corresponds to one or more Co-ordinating Functions
  • the Co-ordinating Function may be located on a corresponding gateway or a base station, or may be an independently existing device.
  • the message interaction between the base station and the Co-ordinating Function may be implemented by the gateway to which the base station belongs, that is, the base station sends a message to the Co-ordinating Function through the gateway, and the Co-ordinating Function sends the message through the gateway.
  • the base station may also directly perform message interaction without passing through the gateway to which the base station belongs.
  • the MBMS service resource request message may be a request message for applying for a new MBMS service resource of the cell 1.
  • the MBMS service resources of the neighboring cell 1 and the cell 2 may be coordinated as follows: 1) When there is an MBMS service that is the same as the new MBMS service in the cell 2, the same MBMS resource in the cell 2 as the new MBMS service is allocated for the new MBMS service; when the new MBMS service does not exist in the cell 2 When the same MBMS service is used, the new MBMS is allocated resources that are different from the existing MBMS services in the cell 1 and the cell 2;
  • the same new MBMS service in the cell 1 and the cell 2 is allocated the same. Resources, and/or allocate different resources for different new MBMS services in Cell 1 and Cell 2.
  • the MBMS service resource request message may also be a request message for releasing the MBMS service resource in the cell 1, and the resource coordination result is to release the MBMS service resource.
  • the MBMS service resource request message may also be a request message for temporarily suspending the MBMS service in the cell 1, and the resource coordination result is to reserve or release the MBMS service resource.
  • the first embodiment is: when the two adjacent cells apply for a new MBMS service resource, and the new MBMS service of the two cells has the same MBMS service and different MBMS services, the two adjacent cell MBMS service resources are coordinated according to the present invention. example.
  • the cell 1 and the cell 2 are adjacent to each other and belong to the same gateway. In this embodiment, the two cells are covered by the same base station. In cell 1, ⁇ 1, 2, 3, 4 ⁇ 4 MBMS services are to be added, and in cell 2, ⁇ 1, 2, 5, 6 ⁇ 4 MBMS services need to be added. Referring to FIG. 2, the flow of the first embodiment includes the following steps:
  • Step 101 The cell 1 and the cell 2 belong to the same base station, and the base station sends a request message for requesting the resource of the new MBMS service of the cell 1 and the cell 2 to the Co-ordinating Function through the gateway, where the MBMS service resource request message includes at least the cell 1 The identity of the new MBMS service and the identity of the new MBMS service for Cell 2.
  • Step 102 Co-ordinating Function ⁇
  • the new MBMS service of cell 1 and cell 2 obtains resource coordination result, that is, the same MBMS service ⁇ 1 , 2 ⁇ in the two cells occupy the same resource, and different MBMS services in the two cells ⁇ 3, 4, 5, 6 ⁇ should not occupy the same resources, and the coordination result is sent to the base stations covering cell 1 and cell 2 through the response message.
  • the resources herein may include frequency band resources, super frames, and sub-frame resources for transmitting MBMS services.
  • Step 103 The base station allocates resources according to a response message from the Co-ordinating Function.
  • Second Embodiment Mainly describes an example in which a cell temporarily suspends an MBMS service, and the present invention coordinates an MBMS service resource of two adjacent cells.
  • Step 201 The base station of the coverage cell 2 sends a request message for temporarily suspending the MBMS service ⁇ 1 ⁇ to the Co-ordinating Function through the gateway, where the MBMS service resource request message includes at least The identifier of the temporarily suspended MBMS service.
  • Step 202 After receiving the service resource request message, the Co-ordinating Function returns a resource coordination result to the base station of the coverage cell 2 to reserve or release the resource response step 203, and the base station of the coverage cell 2 responds according to the response message.
  • These resources are reserved in the cell 2 for the MBMS service ⁇ 1 ⁇ or the resources in the cell 2 for transmitting the MBMS service ⁇ 1 ⁇ are released.
  • the Co-ordinating Function also sends an indication message to the base station of the coverage cell 1, instructing it to adjust the resources occupied by the MBMS service in the cell 1, for example, adjusting the resources occupied by the MBMS service ⁇ 1 ⁇ in the cell 1 to Different resources, so that they will not be interfered by other MBMS services at the edge of the cell.
  • the base station covering the cell 1 adjusts the MBMS resources in the cell 1 according to the indication message.
  • Third Embodiment An example of coordinating MBMS service resources of two adjacent cells according to the present invention when a new MBMS service is added to a cell is mainly described.
  • Cell 1 and cell 2 are adjacent to each other and belong to the same gateway. Both the cell 1 and the cell 2 are transmitting the MBMS service ⁇ 1 , 2, 3, 4 ⁇ , and at this time, the new MBMS service ⁇ 7 ⁇ is added in the cell 1.
  • the flow of the third embodiment includes the following steps:
  • Step 301 The base station that covers the cell 1 sends a request message for applying for a new MBMS service resource to the Co-ordinating Function, and the MBMS service resource request message includes at least the identifier of the new MBMS service.
  • Step 302 Co-ordinating Function 2, whether there is the same MBMS service as the new MBMS of the cell 1 in the cell 2, and the resource coordination result is obtained, that is, if there is the same MBMS service in the cell 2, it is new in the cell 1.
  • the MBMS service allocates the same resources as the MBMS service in the cell 2, and if not, allocates resources different from the resources used by the cell 1 and the cell 2.
  • the cell 2 has ⁇ 1, 2, 3, 4 ⁇ four MBMS services, and if there is no MBMS service ⁇ 7 ⁇ requested by the cell 2, the new resource is allocated for the MBMS service ⁇ 7 ⁇ of the cell 1. This resource is different from the resources of the existing MBMS service ⁇ 1 , 2, 3, 4 ⁇ .
  • the Co-ordinating Function returns a response message carrying the resource coordination result to the base station covering the cell 1.
  • Step 303 The base station covering the cell 1 allocates resources different from the other four MBMS services to the MBMS service ⁇ 7 ⁇ according to the response message.
  • the resources herein may include frequency band resources, super frames, and subframe resources for transmitting MBMS services.
  • the fourth embodiment mainly describes an example of coordinating MBMS service resources of two adjacent cells according to the present invention when a higher priority MBMS service is added to a cell.
  • Cell 1 and cell 2 are adjacent to each other and belong to the same gateway. Both cell 1 and cell 2 are transmitting MBMS services ⁇ 1 , 2, 3, 4 ⁇ . At this time, cell 1 suddenly needs to transmit a higher priority MBMS service. Or a single wave (unicast) business.
  • the flow of the fourth embodiment includes the following steps:
  • Step 401 The base station of the coverage cell 1 sends a request message for requesting a resource of the new MBMS service to the Co-ordinating Function through the gateway, where the MBMS service resource request message includes at least the identifier of the new MBMS service.
  • Step 402 The Co-ordinating Function obtains a resource coordination result according to whether the current remaining resources are sufficient to transmit the MBMS service with a high priority, and returns the information to the base station of the coverage cell 1 by using the response message. That is: if the current remaining resources are sufficient to transmit MBMS with high priority
  • the service in the response message, indicates that the base station that covers the cell 1 allocates new resources to the MBMS service with a higher priority; if the current remaining resources are insufficient to transmit the resource with a high priority, the Co-ordinating Function follows a preset priority algorithm. It is determined that the original MBMS service is released first, and the part of the resource is allocated to the MBMS service with higher priority, and the base station covering the cell 1 is instructed to release the determined MBMS service and allocate resources for the new MBMS.
  • Step 403 The base station covering the cell 1 allocates resources to the MBMS service ⁇ 7 ⁇ according to the response message.
  • the resources herein may include frequency band resources, superframes, and subframe resources for transmitting MBMS services.
  • Fifth Embodiment When an MBMS service is added to one of two adjacent cells belonging to different gateways, an example of coordinating MBMS service resources of two adjacent cells according to the present invention is mainly described.
  • the cell 1 and the cell 2 are adjacent to each other and belong to different gateways. It may be assumed that the cell 1 belongs to the first gateway, the first gateway corresponds to the first Co-ordinating Function, the cell 2 belongs to the second gateway, and the second gateway corresponds to the second Co. -ordinating Function. Cell 1 transmits ⁇ 1, 2, 3, 4 ⁇ 4 MBMS services, and Cell 2 transmits ⁇ 1, 2, 3, 4, 5 ⁇ 5 MBMS services, at which time Cell 1 adds a new MBMS service ⁇ 5 ⁇ .
  • the flow of the fifth embodiment includes the following steps:
  • Step 501 The base station of the coverage cell 1 sends, by using the first gateway, a request message for requesting a resource of a new MBMS service to the first Co-ordinating Function, where the service resource request message includes at least an identifier of the new MBMS service.
  • Step 502 The first Co-ordinating Function sends a response message to the base station of the coverage cell 1 by using the first gateway, and in the response message, instructing to allocate a new resource different from the used resource for the MBMS service ⁇ 5 ⁇ , and to the second
  • the Co-ordinating Function sends a synchronization message, where the synchronization message carries the resource coordination result, including at least the identifier of the cell 1, the new MBMS industry.
  • the identity of the service and the new MBMS service ⁇ 5 ⁇ need to occupy MBMS resources.
  • Step 503 The base station covering the cell 1 allocates a new resource for the MBMS service ⁇ 5 ⁇ according to the response message.
  • the second Co-ordinating Function sends an indication message to the base station of the coverage cell 2 through the second gateway according to the resource occupied by the MBMS service ⁇ 5 ⁇ in the synchronization message, indicating the MBMS service in the cell 2.
  • the resource of the 5 ⁇ resource is scheduled, for example, it is adjusted to the same resource as the MBMS service ⁇ 5 ⁇ in the cell 1 to ensure that the MBMS service does not interfere with the air interface merging process of other MBMS services at the cell edge.
  • Step 505 The base station covering the cell 2 performs resource scheduling according to the indication message.
  • the first Co-ordinating Function sends an MBMS resource coordination request to the third Co-ordinating Function, and then the third Co-ordinating Function.
  • the ordinating function sends the resource coordination result to the first Co-ordinating Function and the second Co-ordinating Function.
  • the synchronization message carrying the resource coordination result is sent to the second Co-ordinating Function without the first Co-ordinating Function.
  • the cell 1 and the cell 2 are adjacent to each other and belong to different gateways. It may be assumed that the cell 1 belongs to the first gateway, the first gateway corresponds to the first Co-ordinating Function, the cell 2 belongs to the second gateway, and the second gateway corresponds to the second Co. -ordinating Function. Cell 1 transmits ⁇ 1, 2, 3, 4 ⁇ 4 MBMS services, and Cell 2 transmits ⁇ 1, 2, 3, 4, 5 ⁇ 5 MBMS services, at which time Cell 1 adds a new MBMS service ⁇ 5 ⁇ .
  • the flow of the sixth embodiment includes the following steps:
  • Step 601 The base station of the coverage cell 1 sends, by using the first gateway, a request message for requesting a resource of a new MBMS service to the first Co-ordinating Function, where the service resource request message includes at least an identifier of the new MBMS service.
  • Step 602 After receiving the resource request message of the base station that covers the cell 1, the first Co-ordinating Function sends a synchronization message to the second Co-ordinating Function, where the synchronization message carries the resource coordination result, and at least includes the identifier of the cell 1, and the new The identity of the MBMS service and the new MBMS service ⁇ 5 ⁇ need to occupy the MBMS resources.
  • Step 603 the second Co-ordinating Function, according to the resource that the cell 2 already has the MBMS service ⁇ 5 ⁇ , the MBMS resource occupied by the MBMS service ⁇ 5 ⁇ in the cell 1 is the same as the resource occupied by the MBMS service ⁇ 5 ⁇ in the cell 2. And returning the modified resource coordination result to the first Co-ordinating Function through the response message. If the MBMS service ⁇ 5 ⁇ is not transmitted in the cell 2, the second Co-ordinating Function returns a response message that does not change or does not return a response message.
  • Step 604 After receiving the response message of the second Co-ordinating Function, the first Co-ordinating Function sends the modified resource coordination result or the original coordination result to the base station of the coverage cell 1 by using the response message.
  • Step 605 The base station covering the cell 1 allocates resources to the MBMS service ⁇ 5 ⁇ according to the response message.
  • the resources herein may include frequency band resources, superframes, and subframe resources for transmitting MBMS services.
  • Step 602 to step 604 are changed to: after receiving the request message for requesting the resource of the new MBMS service sent by the base station of the cell 1, the first Co-ordinating Function sends an MBMS resource coordination request to the third Co-ordinating Function, and then Three Co-ordinating Function sends the resource coordination result to the first Co-ordinating The function and the second Co-ordinating Function, after receiving the resource coordination result from the third Co-ordinating Function, the first Co-ordinating Function sends the resource coordination result to the base station of the coverage cell 1 by using the response message.
  • the resource coordination result refers to an MBMS resource that is different from the used resources in the cell 1 and the cell 2.
  • the cell 1 and the cell 2 are adjacent to each other and belong to different gateways. It may be assumed that the cell 1 belongs to the first gateway, the first gateway corresponds to the first Co-ordinating Function, the cell 2 belongs to the second gateway, and the second gateway corresponds to the second Co. -ordinating Function.
  • Cell 1 transmits ⁇ 1 , 2, 3, 4 ⁇ 4 MBMS services, and cell 2 transmits ⁇ 1 , 2, 3 , 4 ⁇ 4 MBMS services. At this time, cell 1 stops transmitting MBMS service ⁇ 3 ⁇ . Referring to FIG.
  • Step 701 The base station of the coverage cell 1 sends a request message for releasing the resource of the MBMS service ⁇ 3 ⁇ to the first Co-ordinating Function by using the first gateway, where the service resource request message is sent. At least the identity of the MBMS service to be released is included.
  • Step 702 After receiving the resource release message of the base station that covers the cell 1, the first Co-ordinating Function sends a synchronization message to the second Co-ordinating Function, where the synchronization message carries the resource coordination result, including at least the identifier of the cell 1, the MBMS.
  • the service identity and the MBMS service ⁇ 3 ⁇ need to release the MBMS resources.
  • Step 703 The second Co-ordinating Function may allocate resources occupied by the MBMS service ⁇ 3 ⁇ to other MBMS services, or may keep the original resources unchanged. Take the original resource as an example.
  • the second Co-ordinating Function sends a response message to the first Co-ordinating Fimctiori.
  • Step 704 The first Co-ordinating Function returns a response message to the base station of the coverage cell 1 according to the response message from the second Co-ordinating Function.
  • Step 705 The base station releases the resource according to the response message.
  • the resources herein may include frequency band resources, super frames, and subframe resources for transmitting MBMS services.
  • the first Co-ordinating Function sends an MBMS resource coordination request to the third Co-ordinating Function, and then the third Co-ordinating Function, after receiving the resource release message sent by the base station covering the cell 1.
  • the resource coordination result is to release the resource of the MBMS service ⁇ 3 ⁇ in the cell 1, and retain the original of the MBMS service ⁇ 3 ⁇ in the cell 2.
  • the eighth embodiment is: When a new MBMS service is added to one of two adjacent cells belonging to different gateways, and the new MBMS service uses the existing MBMS service resources of the neighboring cell, the adjacent two cell MBMS service resources are coordinated according to the present invention. example of.
  • the cell 1 and the cell 2 are adjacent to each other and belong to the same gateway.
  • the cell 1 transmits the MBMS service ⁇ 1 , 2, 3 , 4 ⁇
  • the cell 2 transmits the MBMS service ⁇ 1 , 2, 3 , 4 ⁇ .
  • the UE Since the UE does not receive the MBMS service ⁇ 1 ⁇ temporarily in the cell 1, the resources occupied by the MBMS service ⁇ 1 ⁇ in the cell can be released, and at this time, the UE requests to transmit another MBMS service ⁇ 7 ⁇ , then the MBMS service ⁇ 7 ⁇
  • the soft frequency multiplexing technology can be used, and the base station transmits the power information of the MBMS service ⁇ 7 ⁇ to the Co-ordinating Function, Co-ordinating Function
  • the power of the MBMS service ⁇ 7 ⁇ will be obtained according to a predetermined algorithm to ensure that the power of the MBMS service transmitted by the neighboring cell is not excessively large, so that the MBMS service ⁇ 7 ⁇ and the MBMS service ⁇ 1 ⁇ at the cell edge do not interfere with each other.
  • the resource coordination result of the embodiment is: allocating the same resource to the other MBMS service existing in the cell 2 for the new MBMS service, and making the power of the new MBMS service at the cell edge smaller than the power capable of generating interference.
  • the Co-ordinating Function returns the resource coordination result to the base station through the response message, and the base station adjusts the resource of the MBMS service ⁇ 7 ⁇ according to the response message.
  • Ninth Embodiment An example of coordinating adjacent two-cell MBMS service resources according to the present invention is described mainly when an MBMS service further includes a program band.
  • the Co-ordinating Function can also be used to coordinate the transmission of such a specific MBMS service in the cell, such as a mobile TV service.
  • a specific MBMS service such as a mobile TV service.
  • the coordination of the MBMS service resources needs to include the coordination of the resources occupied by the program band, and the coordination of the resources occupied by the program band is the same as the coordination of the MBMS service resources in the previous embodiment, and the specific implementation process and the other
  • the embodiment is similar, that is, the same program band in the MBMS service to which the same resource is allocated is allocated the same resource, and details are not described herein again.
  • the tenth embodiment mainly describes an example of coordinating MBMS service resources of two adjacent cells according to the present invention when the bandwidth of two adjacent cells is inconsistent but the MBMS service occupies the same bandwidth resource.
  • the MBMS service needs to occupy the same bandwidth resource.
  • the specific implementation process is the same as that in the previous embodiment, and is not mentioned here.
  • adjacent cells 1 and 2 may belong to the same service area.
  • the so-called same service area refers to an area that uses the same time-frequency transmission of service content on the same geographical coverage.
  • cell 1 and cell 2 are preferably the largest synchronization area.
  • the synchronization area refers to an area in which all base stations can synchronize and perform multicast single frequency network (MBSFN) transmission.
  • MBSFN multicast single frequency network
  • the sync area can support one or more MBSFN areas. Also, at a given frequency level, the base station can only belong to one synchronization area.

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Abstract

L'invention concerne un procédé d'harmonisation de ressources de services MBMS dans des cellules avoisinantes, qui comprend les étapes de : envoi d'un message de demandes de ressources de services MBMS à la première fonction de coordination, qui correspond à la première passerelle à laquelle la station de base de la première cellule appartient; réception du message de réponse avec les résultats d'harmonisation de ressources acquis par la première fonction de coordination d'après l'état de ressources des deux cellules avoisinantes; et réglage des ressources des services MBMS dans la première cellule selon le message de réponse. L'invention utilise l'interaction entre les stations de base des cellules avoisinantes et la fonction de coordination correspondant à la passerelle pour régler les ressources des services MBMS dans les cellules avoisinantes, de manière que les mêmes services MBMS puissent être transmis selon les mêmes ressources dans les cellules avoisinantes afin d'éliminer l'interférence associée à la combinaison d'une interface air à la limite des cellules avoisinantes.
PCT/CN2007/070138 2006-06-20 2007-06-20 Procédés et systèmes d'harmonisation de ressources de services de diffusion multimédia/multidiffusion dans des cellules avoisinantes WO2008000180A1 (fr)

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CN200610093392.6 2006-06-20
CN2006100933926A CN101094216B (zh) 2006-06-20 2006-06-20 协调相邻小区多媒体广播/组播业务资源的方法及其系统

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