WO2008043259A1 - Procédé, dispositifs et terminal utilisateur pour attribution et indication des ressources d'interface radio - Google Patents

Procédé, dispositifs et terminal utilisateur pour attribution et indication des ressources d'interface radio Download PDF

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Publication number
WO2008043259A1
WO2008043259A1 PCT/CN2007/002789 CN2007002789W WO2008043259A1 WO 2008043259 A1 WO2008043259 A1 WO 2008043259A1 CN 2007002789 W CN2007002789 W CN 2007002789W WO 2008043259 A1 WO2008043259 A1 WO 2008043259A1
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WIPO (PCT)
Prior art keywords
group
resource allocation
resource
air interface
allocation information
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PCT/CN2007/002789
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English (en)
Chinese (zh)
Inventor
Lian Yang
Yi Bao
Wei Pan
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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 WO2008043259A1 publication Critical patent/WO2008043259A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • Air interface resource allocation indication method device and user terminal
  • the present invention relates to the field of wireless mobile communications, and in particular, to an air interface resource allocation indication method, apparatus, and user terminal. Background technique
  • the quality of service required for voice and data services is significantly different.
  • voice services high real-time performance is required to ensure that the caller can communicate smoothly.
  • the service is relatively average in time.
  • the user terminal usually talks before hanging up, and the rate of voice service is relatively low. Solid, the uplink and downlink rates are symmetrical. ,
  • the user terminal can wait for the response of the network slightly in activities such as browsing, downloading, and sending emails. Meanwhile, the initiation of some data services is sudden, and each time the service is transmitted, after the user is finished, The terminal has an untimely reading time. During the course of the service, the user terminal wants to obtain the highest possible data transmission rate and reduce the data transmission time.
  • This kind of data service has a sudden strong IP domain feature, so that in the wireless air interface, it is often necessary to dynamically allocate physical resources according to traffic changes.
  • the existing wireless air interface protocol standards such as IEEE802.16e are designed accordingly. .
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDMA is a combination of an OFDM (Orthogonal Frequency Division Multiplexing) technology and a FDMA (Frequency Division Multiple Access) multiple access method.
  • the OFDM technique divides a given channel into a number of orthogonal subcarriers in the frequency domain, and each subcarrier modulates and transmits data in parallel.
  • An OFDMA system generally divides all subcarriers of an OFDM system into more than one subcarrier group, each subcarrier group includes multiple subcarriers, and maps each of the subcarrier groups into one logical subchannel, each subchannel passing through a subchannel Index to identify.
  • the resource is allocated, the user terminal is allocated one or more subchannels according to the bandwidth requirement of the user terminal, and the OFDMA system can change the allocation of the subchannels of each mobile user terminal in real time according to the current channel environment, bandwidth allocation and other factors. Situation, to achieve higher spectrum utilization.
  • the OFDMA system uses the subchannel as the smallest unit of frequency domain resource allocation, that is, one or more subchannels can be allocated according to the bandwidth requirement of the user terminal, and the user terminal uses all the corresponding subchannels allocated thereto.
  • Subcarrier transmission data is the subcarrier transmission data.
  • each OFDMA frame needs to properly allocate the wireless resources of the system according to the bandwidth requirements of the user terminal, and pass The broadcast message in each frame broadcasts the radio resource allocation of the current frame to each user terminal, where the radio resource also includes two aspects as well as other systems: time domain resources and frequency domain resources.
  • FIG. 1 shows a frame structure of a time division duplex mode of an OFDMA system defined by IEEE802.16.
  • the radio resource allocated for the user terminal is a two-dimensional resource composed of a time domain and a frequency domain, wherein the time domain corresponds to an OFDMA symbol, where k, k+1.. ... k+28 denotes an index of each OFDMA symbol transmitted in chronological order; and the frequency domain corresponds to each subchannel, where s, s+1, s+L denotes that the OFDMA system allocates to the user terminal Each subchannel index.
  • the downlink burst data packets 1 to 5 and the uplink burst data packets 1 to 5 in the figure respectively represent downlink and uplink burst data of different user terminals transmitted in the frame, and the initial access subchannel in the uplink subframe is A random access channel reserved for the terminal.
  • OFDMA system through the downlink and uplink In the broadcast message, a time-frequency two-dimensional resource block is defined for each user terminal having data transmission to allocate symbol resources and subchannel resources used by each user terminal, and each user terminal uses the allocated subchannels in the allocated symbol time. transfer data.
  • the time-frequency two-dimensional resource block can be defined by four parameters: symbol offset, subchannel offset, number of symbols, and number of subchannels, and the user terminal is notified in a downlink broadcast message.
  • the time-frequency two-dimensional resource block allocated by the OFDMA system for the data packet is a symbol index from k+5 to k+15, and the subchannel index is from s to s+4.
  • the resource block can be defined in the downlink broadcast message by four parameters: symbol offset 5, symbol number 11, subchannel offset 0, and subchannel number 5.
  • the user terminal transmitting the downlink burst data packet 3 transmits the downlink burst data packet 3 using the subchannel s to the subchannel s+4 within the symbol time of k+5 to k+15.
  • the user terminal allocates the downlink data according to the resource allocation information allocated to itself according to the four parameters defined in the downlink broadcast message, and uses the corresponding subchannel in the corresponding symbol time.
  • the time-frequency two-dimensional minimum resource unit may be uniformly numbered according to the symbol offset and the sub-channel offset, such as the minimum resource unit corresponding to the sub-channel offset 0 and the OFDMA symbol offset 17 is 0, and then The subchannel is offset by 0 in the horizontal direction, the minimum resource unit number of the OFDMA symbol offset 18 ⁇ 28 is 1 ⁇ 11 , the subchannel offset 1 corresponds to the minimum resource unit numbered 12 ⁇ 23, and so on.
  • the allocation of the first uplink resource block may be allocated by the start number and the duration length, and at the same time, the end point of one resource block above each resource block is the starting point, and the resources of the entire data interval.
  • the allocation only needs to know the initial starting number and the duration of each burst, and notifies the user terminal in the uplink broadcast message.
  • the starting point corresponding to the uplink burst packet 1 in FIG. 1 is the subchannel offset 0 and the OFDMA symbol offset 17, and the duration is 34, and the corresponding end point is the subchannel offset 3, and the symbol offset 26
  • the user terminal that sends the uplink burst packet 1 is informed according to the uplink broadcast message and is in the resource.
  • the upper data is transmitted in the subchannel and symbol time corresponding to the block.
  • the starting point corresponding to the uplink burst data packet 2 is the end point of the uplink burst data packet 1.
  • the user terminal allocates downlink data according to the resource allocation information allocated to itself according to the four parameters defined in the downlink broadcast message, and uses the corresponding subchannel in the corresponding symbol time.
  • the frame structure of the air interface includes resource allocation information re-allocated for each user terminal having data transmission in the broadcast message of each frame, which may be different data frames for the same user terminal.
  • the data transmitted in the middle allocates different subchannel resources and OFDMA symbol resources. It has the characteristics of flexible frame structure and resource allocation per frame update.
  • the data service has a sudden strong feature
  • part of the data service and the voice service have characteristics of long duration and constant rate, and the air interface resources of the part of the service at this time. It will remain unchanged for a long time, and the duration of the continuous frame will be longer. At this time, if resources are re-allocated for such services in the broadcast message of each frame, it is obviously a waste of broadcast messages.
  • the number of bits required for the sub-channel offset and sub-symbol offset of the description of the resource unit will be more and more.
  • IEEE802.16e uses 8-bit bits to separate Indicator offset, subchannel offset, number of symbols, and number of subchannels.
  • the increase of bandwidth will also result in a large number of users supporting simultaneously in the same frame. Therefore, the broadcast message indicated for each frame per user contains a large amount of resource allocation information, and even occupies frame resources. More than 10%, this ratio is obviously too big.
  • the frame structure of the air interface has better support for bursty data services, but the too flexible frame structure is not efficient, but wastes limited air interface resources in repeated resource allocation. And the indication, the effective data throughput is reduced; and when the rate of the data service is relatively constant and the duration is long, the frame structure is less efficient. Summary of the invention
  • the embodiment of the present invention provides an air interface resource allocation indication method, device, and user terminal, which are used to solve the problem that the resource allocation information in the prior art occupies a large number of air interface resources, thereby reducing the effective number. According to the throughput problem.
  • an air interface resource allocation indication method including:
  • the base station groups the air interface resources, and forms a plurality of air interface resource packets, and indicates the first level resource allocation information to the terminal, where the first level resource allocation information includes the identifier information of the air interface resource group;
  • the base station When the terminal initiates or receives the current service, the base station notifies the air interface resource group identification information corresponding to the current service type of the terminal, allocates an air interface resource to the terminal in the air interface resource group, and indicates to the terminal the second level of the resource allocation result in the group. Resource allocation information.
  • the embodiment of the present invention further provides an air interface resource allocation indication device, which is located at a base station, where the device includes a grouping module, a second level allocation module, and a sending module, where:
  • the grouping module groups the air interface resources to form a plurality of air interface resource groups, and notifies the second level allocation module of the group identification information, and indicates the first level resource allocation information to the terminal by using the sending module, where the The first-level resource allocation information includes the identifier information of the air interface resource group; the second-level allocation module notifies the air interface resource group identifier information corresponding to the current service type of the terminal when the terminal initiates or accepts the current service, where the air interface resource The air resource is allocated to the terminal in the packet, and the second module resource allocation information of the resource allocation result in the group is indicated by the sending module to the terminal.
  • the embodiment of the present invention further provides a user terminal, including a receiving module and a processing module, where the user terminal further includes a storage unit, where:
  • the processing module parses the identifier of the group carried in the notification and saves the identifier to the storage unit;
  • the processing module parses the first-level resource allocation information and/or the second-level resource allocation information, and allocates the first-level resource allocation information and/or the second-level resource allocation. Information is saved to the storage unit.
  • the base station groups the air interface resources to form a plurality of air interface resource packets, and indicates the first level resource allocation information to the terminal, where the first level resource allocation information includes the identifier information of the air interface resource group; Notify the terminal of the current service class when initiating or receiving the current service
  • the air interface resource group identification information corresponding to the type, the air interface resource is allocated to the terminal in the air interface resource group, and the second level resource allocation information of the resource allocation result in the group is indicated to the terminal. Because the technical solution of the embodiment of the present invention is adopted, the first-level resource allocation information and the second-level resource allocation information may not be broadcasted every frame. Therefore, the air interface resource occupied by the resource allocation information may be reduced.
  • the base station broadcasts the second-level resource allocation information of the group only when the intra-group service initially occurs or changes or when the intra-group resources are re-allocated for other reasons, the information amount of the broadcast message can be greatly reduced, thereby reducing the amount of information.
  • the air interface resource occupied by the resource allocation information increases the throughput of the effective data.
  • FIG. 1 is a schematic diagram of a frame structure of an OFDMA system time division duplex mode defined by IEEE802.16;
  • FIG. 2 is a schematic structural diagram of an OFDMA frame in an example of the present invention.
  • FIG. 3 is a flowchart of broadcasting first-level resource allocation information in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a group separately numbering time domain and frequency domain resources in an example of the present invention
  • FIG. 5 is a flowchart of a process after a terminal receives a broadcast message including a second-level resource allocation information according to an embodiment of the present invention
  • FIG. 6 is a block diagram of an apparatus for transmitting broadcast resource allocation information on a base station according to an embodiment of the present invention
  • FIG. 7 is a block diagram of an apparatus for broadcasting resource allocation information on a base station according to an embodiment of the present invention
  • FIG. 8 is a block diagram of a user terminal according to an embodiment of the present invention. detailed description
  • the base station uses a two-level resource allocation indication method to broadcast the air interface resources allocated for each service, where:
  • the base station groups the air interface resources to form a plurality of air interface resource packets, and indicates the first level resource allocation information to the terminal, where the first level resource allocation information includes the identifier information of the air interface resource group;
  • the base station notifies the air interface resource group identifier information corresponding to the current service type of the terminal, allocates an air interface resource to the terminal in the air interface resource group, and indicates to the terminal the second resource allocation result in the group.
  • Level resource allocation information is
  • the terminal obtains the air interface resources allocated by the base station according to the first-level resource allocation information and the second-level resource allocation information obtained by the terminal, and uses the air interface resource to send or receive data.
  • the above group of resources refers to all the air interface resources occupied by one group; the intra-group resources refer to the air interface resources in one group, and the resources in the group are some or all groups of resources.
  • the base station may adopt a broadcast mode or a direct indication manner when indicating resource allocation information to the terminal, and the purpose is to notify the terminal of the resource allocation information, instead of using a method.
  • the resource allocation information is indicated to the terminal.
  • a common broadcast mode is used to indicate to the terminal as an example. However, those skilled in the art are aware that the implementation is not limited to the use of the broadcast mode.
  • the base station uses the two-level resource allocation indication method to broadcast the air interface resources allocated for each service, which are broadcasts of the first-level resource allocation information and the second-level resource allocation information, where:
  • the base station groups the air interface resources and broadcasts the first level resource allocation information, where the first level resource allocation information includes the identification information of each group and the group resource location indication information of the packet.
  • the base station can be grouped according to the type of service, and/or the principle of halving the air interface resources. That is, when the air interface resources are grouped, the base station can divide the air interface resources evenly for each group, and can also arbitrarily divide the air interface resources according to the service type corresponding to the air interface resource group and other needs, and a group or Multiple sets of air interface resources can be assigned to the same service type.
  • the grouping of the air interface resources is coarse granularity, that is, the divided resource blocks are large, and the number of groups is small relative to the number of services, therefore, only a small number of bits is needed.
  • the resource blocks obtained by the group division can be clearly described, so that the air interface resources that need to be occupied by the first-level resource allocation information are small.
  • the downlink service group message with the first-level resource allocation information only needs to describe the resource blocks occupied by the downlink groups 1 to 4, and the uplink service group message only needs to describe the resource blocks occupied by the uplink groups 1 to 4, respectively.
  • the example uses the absolute position indication method in the description, and the downlink group 2 is described by four parameters: symbol offset 2, symbol number 8, subchannel offset 0, and subchannel number 10. This description method is the same as in the prior art.
  • the grouping of the air interface resources is coarse-grained, there may be a case where re-grouping is not performed for a long time, and therefore, the first-level resource allocation information including the result of the grouping is broadcast only after re-grouping, which can be reduced. The amount of resource allocation information that needs to be broadcast.
  • the first-level resource allocation "content" may be broadcasted multiple times after re-grouping.
  • the first-level resource allocation information needs to occupy a small amount of air interface resources, even if each frame is broadcasted: it will occupy too many resources, and this processing can be used to re-group the air interface resources without simplification of broadcasting.
  • the processing flow of the level resource allocation information is not limited to a small amount of air interface resources, even if each frame is broadcasted: it will occupy too many resources, and this processing can be used to re-group the air interface resources without simplification of broadcasting.
  • the periodic broadcast combines the re-allocation of the group resources to broadcast the first-level resource allocation information; the method is a compromise method of the foregoing two methods, which can avoid the user-in-channel caused by broadcasting the first-level resource allocation information only after re-grouping. In the case of bad conditions, the first-level resource allocation information cannot be correctly received, and the amount of resource allocation information that needs to be broadcasted can be reduced.
  • the first-level resource allocation information may also be periodically broadcasted under the condition that the length of the period does not make the user feel obvious waiting, but correspondingly, the broadcast of the second-level resource allocation information also needs to be adjusted accordingly.
  • Step S101 The base station groups the air interface resources according to the service type.
  • Step S102 The base station broadcasts first-level resource allocation information.
  • the first level resource allocation information includes identification information of each packet and group resource location indication information included in the packet.
  • Step S103 After receiving the broadcast message, the terminal parses and saves the broadcast of the second-level resource allocation information of the first-level resource allocation information:
  • the air interface resource block to which the service is allocated is described by the first level resource allocation information and the second level resource allocation information.
  • the identification information of each group and the The group resource location indication information included in the packet describes the grouping result of the air interface resource of the base station, that is, the resource block that each group can occupy.
  • the base station notifies the terminal of the identification information of the group allocated by the terminal.
  • the identifier information remains unchanged during the service duration, and in the second-level resource allocation information, the allocation result of the resources in the group is described, and therefore, the grouping result, the group identification information, and the group resource are combined.
  • the allocation result can make the terminal know the air interface resource allocated by the base station.
  • the base station separately numbers the time domain and the frequency domain resources in each group, and describes each group according to the time domain and frequency domain resources of each group separately numbered.
  • FIG. 4 shows the intra-group resource description method of the downlink group 2 in the above example.
  • the downlink group 2 occupies the symbol offset 2, the symbol number 8, and the subchannel bias.
  • S, S, and +9 are used in the frequency domain, but in the time domain. , using k, ⁇ k, +7 to describe.
  • the air interface resource allocated to the downlink burst data packet 6 is a resource unit defined from the time domain k, and the frequency domain S, the defined resource unit to the time domain k, +6, and the frequency domain S, +2, and the duration is 20, using the relative position indication method, using the three parameters of symbol offset 0, sub-channel offset 0, and length 20 to describe the air interface resources occupied by the downlink burst data packet 6.
  • the air interface resource actually allocated by the downlink burst data packet 6 is the resource unit defined by the time domain k+2 and the frequency domain S until the time domain k. +8 and frequency domain
  • the resources in the group can be greatly described in the above manner. Reduce the amount of information of the second level resource allocation information. After the terminal obtains the second-level resource allocation information, the first-level resource allocation information is used to learn the allocated air interface resources.
  • the base station When the number of services in one of the air interface resource packets changes, that is, if the service initiates or accepts the service and the base station allocates the group for the service, the base station re-allocates the intra-group resources of the air interface resource group, and the broadcast includes redistribution.
  • the second level of resource allocation information for the result When one of the services in one of the air resource groups changes, the base station may also re-allocate the intra-group resources of the group, and broadcast the second-level resource allocation information including the intra-group resource allocation result of the group.
  • the base station When the base station re-groups the air interface resources, the group resources of each group change. At this time, the base station can reallocate the intra-group resources of each group, but the description of the resources in the group is independent of the resource blocks occupied by the group. If the group resource occupied by a group changes, but the occupied group resource size remains unchanged, the group resources of the group may not be reallocated. If the intra-group resources of the group are not reallocated, the final result is that the group is relocated, and the terminal can learn the current allocation to the new first-level resource allocation information and the saved second-level resource allocation information. Air interface resources.
  • the base stations are grouped according to the service type. Therefore, in some groups, all services are long in service duration and/or bandwidth requirements are stable, and resource requirements of each service may be compared. For a long period of time, for such a group, it is only necessary to broadcast a second-level resource allocation including the base station re-allocating the intra-group resources of the group when the service initially occurs or changes occur in the group.
  • the information may be, in order to improve the probability that the user correctly receives the second-level resource allocation information in the case of a bad channel, etc., the second-level resource allocation information may be continuously broadcasted multiple times, but no service initially occurs or changes occur in the group.
  • the second-level resource allocation information is not required to be broadcast, the resources occupied by the broadcast message are saved for most of the service, and the effective use of the air interface resources is improved.
  • Step S201 The terminal parses and saves the second-level resource allocation information.
  • Step S202 The terminal, according to the identifier information of the group notified by the base station, combines the first-level resource allocation information and the locally-stored second-level resource allocation information to obtain the air interface resource allocated by the base station.
  • the first-level resource allocation information in this step is locally saved, and the second-level broadcast first-level resource allocation information is used.
  • the method that is, when each frame is broadcast, the first-level resource allocation information in this step is received by the frame.
  • the terminal uses the air interface resource to send or receive data until the next broadcast message including the first level resource allocation information and/or the second level resource allocation information is received.
  • the base station may indicate to the terminal.
  • the total number of bits required for the resource block used to locate the service in the group when using the two-level resource allocation indication method in this embodiment should be equivalent to the number of bits required for the primary positioning in the prior art.
  • the 8-bit bit description resource information is used for the positioning.
  • the 3-bit bit can be used to describe the first-level resource allocation information
  • the 5-bit bit is used to describe the second-level resource allocation information.
  • the two-level resource allocation indication method in this embodiment when used, once a part of the service has a long duration and the bandwidth requirement is stable, the group in which the part of the service is located only initially occurs in the service of the group. Or, when the change occurs, the second-level resource allocation information is broadcasted, and the resource allocation information of each service is not broadcasted frame by frame, and the amount of resource allocation information required can be reduced.
  • the method for broadcasting the first-level resource allocation information is periodic broadcast, if the base station re-groups the air interface resources and re-allocates the resources of a group, the new resource allocation information is broadcasted at the first level. Before the grouping situation, the base station temporarily does not broadcast the second-level resource allocation information. The new second-level resource allocation information is broadcasted while the base station broadcasts the first-level resource allocation information according to the period.
  • the base station indicates the corresponding resource allocation information of the service.
  • the base station does not need to indicate the resource allocation information corresponding to the service.
  • the method of indicating the resource allocation information by the base station is the same as the start position and the end position, or is set to a certain value.
  • the absolute location indication method or the relative location indication method may be separately adopted as needed, as long as the used location is identified in the corresponding resource allocation information.
  • the method is indicated.
  • the method for the specific indication information in the broadcast message is not limited by the present invention.
  • the base station may allocate a resource block in the group to which the service belongs to the service to continue to occupy, and allocate resources to the service to continue to occupy the time, and need to allocate information in the second level of the group.
  • the resources that join the service continue to possess information and broadcast. That is, the base station periodically allocates a resource block in a group to a certain service in the group for a set period of time, and adds the resource continuous occupation time information of the service to the second-level resource allocation information of the group.
  • Periodically notifying the terminal and omitting the resource allocation information of the service in the second-level resource allocation information of the group when the resource in the group of the group changes or the set time expires or the service changes
  • the resource allocation information of the service may be omitted in the second-level resource allocation information of the group, thereby further reducing the information amount of the second-level resource allocation information, and saving air interface resources.
  • the new resource allocation information of the service may be added to the second-level resource allocation information of the group.
  • the base station may allocate a resource block in the group to which the service belongs to the service for a set time, and continuously allocate the resource to the service for a set time.
  • the resource persistent possession time information of the service needs to be added and broadcasted. Since other resources in the group initially occur or change during the period in which the service continues to occupy the resource block, the resources occupied by the service are not affected.
  • the resource allocation information of the service may be omitted in the second-level resource allocation information of the group, thereby further reducing the information amount of the second-level resource allocation information, and saving air interface resources.
  • the new resource allocation information of the service may be added to the second-level resource allocation information of the group.
  • the flag may be set in the corresponding uplink group resource allocation table and/or the downlink group resource allocation table to indicate whether the group adopts a resource allocation indication method in which resources are continuously occupied or resources are continuously occupied for a certain period of time.
  • the downlink service group message and the uplink service group message respectively carry the allocation indication information for the downlink resource and the allocation indication information for the uplink resource in the first-level resource allocation information; each downlink group resource allocation table and the uplink group resource allocation table respectively carry the second The allocation indication information of the downlink resources in the group and the allocation indication information of the uplink resources in the group resource allocation information.
  • the reset flag is set at the start position FIH of the frame, so that all the terminals that read the reset flag bit will read the book. Ben All the broadcast messages of the frame, including the uplink service group message, the downlink service group message, the uplink group resource allocation table, and the downlink group resource allocation table, so as to correctly know the resources allocated to the terminal.
  • the base station may actively redistribute the group resources and/or the intra-group resources in other situations. For example, when the group resource allocation or other reasons cause too many fragments in the total air interface resources, the base station may Group resources and/or intra-group resources are redistributed.
  • the allocation indication information for the downlink resource and the allocation indication information for the uplink resource in the first-level resource allocation information are used to describe the grouping of the air interface resource,
  • the resource blocks are divided by solid lines to represent the resource blocks allocated for each group.
  • the uplink service group message and the downlink service group message can adopt two methods of relative position and absolute position. It can be seen that after the preamble and the FIH are sent in the frame, the uplink service group message and the next service group message are sent to broadcast the first level resource allocation information.
  • Each of the downlink group resource allocation table and the uplink group resource allocation table respectively carries the allocation indication information of the intra-group downlink resources of the group in the second-level resource allocation information and the allocation indication information of the upper-> resources; the uplink group resource allocation table and the downlink
  • the length of the group resource allocation table is indefinite, and is used to describe the resource allocation result of each group.
  • the resource blocks are divided by dotted lines to represent resource blocks allocated for burst data packets of different services.
  • the uplink group resource allocation table and The downlink group resource allocation table may also adopt two methods: a relative location and an absolute location. When no service initially occurs or changes occur in a group of a group, resources of the services in the group remain stable, and resource allocation information in the group resource allocation table Can be omitted, does not occupy air interface resources for broadcasting.
  • the downlink and uplink group resource allocation tables including the second-level resource allocation information are broadcasted at the beginning of the resources allocated for each group, in order to facilitate understanding of the second-level resource allocation information, however,
  • the location of the group resource allocation table is not limited thereto, and for example, the second-level resource allocation information of all groups may be broadcasted immediately after the first-level resource allocation information.
  • the apparatus for transmitting broadcast resource allocation information on the base station in this embodiment includes a grouping module 101, a second level allocation module 102, and a sending module 103, where:
  • the grouping module 101 may group the air interface resources to form a plurality of air interface resource groups, and notify the second level allocation module 102 of the identification information of the group, and indicate the first level resource allocation information to the terminal through the sending module 103, the first level
  • the resource allocation information includes identifier information of the air interface resource group and group resource location indication information included in the air interface resource group;
  • the second-level allocating module 102 notifies the air interface resource group identification information corresponding to the current service type of the terminal when the terminal initiates or accepts the current service, allocates an air interface resource to the terminal in the air interface resource group, and indicates the group to the terminal by using the sending module 103.
  • the second level of resource allocation information of the internal resource allocation result is notifies.
  • the second-level allocating module 102 in order to implement corresponding processing when the terminal initiates or accepts the service, as shown in FIG. 7, may further include a monitoring unit 104 and a second-level allocating unit 105, where: the monitoring unit 104 is discovering one of the When the number of services in the air interface resource group changes, or one of the services changes, the second level allocation unit 105 is notified;
  • the second level allocating unit 105 re-allocates the intra-group resources of the air interface resource group, and instructs the terminal to indicate the second-level resource allocation information including the re-allocation result through the transmitting module 103.
  • the apparatus for broadcasting resource allocation information in this embodiment further includes a control module 106, where:
  • the control module 106 When the grouping module 101 regroups the air interface resources and/or the second level allocation module 102 reallocates a group of intra-group resources, the control module 106 is notified;
  • Control module 106 sets a reset flag at the determined location.
  • the user terminal needs to know the air interface resource allocated by the base station for its service according to the air interface resource grouping result in the first-level resource allocation information, the intra-group allocation result in the second-level resource allocation information, and the group identification information notified by the base station.
  • the user terminal in this embodiment includes a receiving module 201, a processing module 202, and a storage unit 203, where:
  • the processing module 202 parses the identifier of the group carried in the notification and saves it to the storage unit 203; After receiving the notification message, the processing module 202 parses the first-level resource allocation information and/or the second-level resource allocation information, and saves the first-level resource allocation information and/or the second-level resource allocation information to the storage. Unit 203.
  • the user terminal in this embodiment since the user terminal in this embodiment should be able to determine whether it is necessary to read all broadcast messages of the frame according to the reset flag bit in the FIH in the OFDMA frame, thereby ensuring that the terminal in the power saving mode or other conditions can be correct. Know the air interface resources allocated to it. Therefore, the user terminal in this embodiment further includes a determining module 204, configured to determine whether the reset location is received by the receiving module 201, and if so, the notification processing module 202 obtains all the indication messages; otherwise, the processing is not performed. .
  • a determining module 204 configured to determine whether the reset location is received by the receiving module 201, and if so, the notification processing module 202 obtains all the indication messages; otherwise, the processing is not performed.
  • the air interface resource allocated by the service is described by the first level resource allocation information and the second level resource allocation information.
  • the base station reserves a part of the air interface resources, and only groups the remaining air interface resources, and describes the remaining air interfaces to which the service is allocated by using the first-level resource allocation information and the second-level resource allocation information. Resources. For the reserved air interface resources, the base station can directly allocate services to certain services, such as services with short service duration and/or unstable bandwidth requirements, and use the first-level resource allocation information for the air interface resources allocated to the services. broadcast. Such modifications of the invention are intended to be included within the scope of the invention.

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

Abstract

L'invention concerne un procédé, un dispositif et un terminal utilisateur pour l'attribution et l'indication des ressources d'interface radio, afin d'apporter une solution aux problèmes liés à la réduction de la transmission de données valides en raison de la place occupée par les informations d'attribution dans les ressources interface de radio. La station de base divise les ressources d'interface radio en plusieurs groupes et transmet au terminal utilisateur des informations d'attribution de ressources de premier niveau, ces informations d'attribution de ressources d'un premier niveau contenant des informations d'identification du groupe de ressources d'interface radio. Lorsque le terminal utilisateur active ou reçoit des services courants, la station de base notifie au terminal utilisateur les informations d'identification du groupe de ressources d'interface radio correspondant au type de services courants, attribue au terminal utilisateur des ressources d'interface radio comprises dans le groupe de ressources, et transmet au terminal utilisateur des informations d'attribution de ressources du second niveau se rapportant au résultat de l'attribution des ressources à l'intérieur du groupe, ce qui permet de réduire l'occupation des ressources d'interface radio par les informations d'attribution de ressources.
PCT/CN2007/002789 2006-09-22 2007-09-21 Procédé, dispositifs et terminal utilisateur pour attribution et indication des ressources d'interface radio WO2008043259A1 (fr)

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CN2007101456651A CN101159975B (zh) 2006-09-22 2007-09-10 一种空口资源分配指示方法、装置和用户终端
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