WO2009086664A1 - 用于资源分配请求和分配的方法与装置 - Google Patents

用于资源分配请求和分配的方法与装置 Download PDF

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Publication number
WO2009086664A1
WO2009086664A1 PCT/CN2007/003948 CN2007003948W WO2009086664A1 WO 2009086664 A1 WO2009086664 A1 WO 2009086664A1 CN 2007003948 W CN2007003948 W CN 2007003948W WO 2009086664 A1 WO2009086664 A1 WO 2009086664A1
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WIPO (PCT)
Prior art keywords
resource allocation
allocation request
time
mobile terminal
information
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PCT/CN2007/003948
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English (en)
French (fr)
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WO2009086664A8 (zh
Inventor
Xiaobing Leng
Wei Ni
Dongyao Wang
Jimin Liu
Original Assignee
Alcatel Shanghai Bell Company, Ltd.
Alcatel Lucent
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.)
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Publication date
Application filed by Alcatel Shanghai Bell Company, Ltd., Alcatel Lucent filed Critical Alcatel Shanghai Bell Company, Ltd.
Priority to PCT/CN2007/003948 priority Critical patent/WO2009086664A1/zh
Priority to CN200780101678.7A priority patent/CN101878670B/zh
Publication of WO2009086664A1 publication Critical patent/WO2009086664A1/zh
Publication of WO2009086664A8 publication Critical patent/WO2009086664A8/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a method and apparatus for requesting and allocating communication resources in the field of wireless communication, and more particularly to a method and apparatus for requesting resource allocation in a mobile terminal, a method and apparatus for controlling resource allocation in a base station, and a method for using the relay station in a relay station A method and apparatus for assisting in controlling resource allocation.
  • the request and allocation of wireless communication resources is an important issue, and in various communication modes, their respective methods for wireless communication resource allocation requests and allocations have been developed.
  • the request and allocation of wireless communication resources are performed by means of Demand Assigned Multiple Access (DAMA).
  • DAMA Demand Assigned Multiple Access
  • a mobile terminal needs to transmit service data to a base station, it must first send a bandwidth request (Bandwidth Request) to the base station.
  • Bandwidth Request bandwidth request
  • the IEEE 802.16 open standard 802.16d/e and draft 802.16j provide two DAMA mechanisms: a contention based CDMA bandwidth request and a poll based bandwidth request.
  • the mobile terminal uses a Bandwidth Request Header to carry its bandwidth request and sends the bandwidth request header to the base station.
  • the contention-based CDMA bandwidth request is that the mobile terminal uses a Ranging sub-channel or a dedicated resource request subchannel to request a bandwidth from the base station to transmit its bandwidth request header, and the subchannel is moved by multiple The terminal competes. Once the collision occurs, the bandwidth request of the mobile terminal is not successfully sent to the next hop network device, and the mobile terminal uses the truncated binary exponential backoff algorithm to perform backoff, and waits for a certain time delay to retry;
  • the bandwidth request of the query is that the base station sequentially polls all mobile terminals to detect whether there is a bandwidth request.
  • the mobile terminal If the mobile terminal has a bandwidth request, it sends the request to the next hop network device, and finally reaches the base station. After receiving the bandwidth request header, the base station allocates bandwidth to the mobile terminal according to the channel capacity and the bandwidth request.
  • the published 802.16d/e standard and the 802.16j draft define five bandwidth request headers, including the incremental bandwidth request header (802.16d), the aggregate bandwidth request header (802.16d), and the bandwidth + uplink.
  • the bandwidth request header structure defined by a typical 802.16d and its field meaning are as shown in FIG. 1. Through these header information, the mobile terminal can inform the base station of the connection identifier and bandwidth size of its bandwidth request.
  • the header information cannot reflect the time urgency of the requested service data to be transmitted, such as the waiting delay of the service data, and the waiting delay includes a possible bandwidth request message buffer.
  • the delay, the bandwidth request message sending the collision avoidance delay, and the processing delay of the relay station may also include the waiting delay of resending the resource allocation request message after the mobile terminal waits for a period of time because the current bandwidth request is rejected. If the base station does not consider this information, it will allocate resources indiscriminately for requests that have been delayed by the conflict and those that are not delayed. This allocation strategy is unreasonable and does not provide a short service delay. And better system fairness. In relay-based multi-hop networks, this problem is particularly acute due to the potential for longer buffering, relaying and propagation delays, and more resource conflicts. Summary of the invention
  • the present invention provides a technical solution for resource allocation request and allocation.
  • the base station according to certain criteria, according to time urgency information of service data to be transmitted in multiple mobile terminals, in a certain order Allocating resources to individual mobile terminals provides a more average service delay and better system fairness.
  • the time urgency information of the service data to be transmitted in the mobile terminal is carried in the resource allocation request of the mobile terminal, where the time information indicates the time urgency of the service data to be transmitted of the mobile terminal, for example, the generation time of the service data or Waiting for delay.
  • the relay station incorporates the time consumed by the relay station into the time urgency information of the service data according to the forwarding process of the resource allocation request for the service data.
  • a method for controlling resource allocation in a base station of a wireless communication network comprising the steps of: i. receiving a resource allocation request from a mobile terminal; ii. The resource allocation request from the mobile terminal, the urgency information with time information of the resource allocation request of the mobile terminal is obtained; wherein the method further comprises the following steps: iii. based on the predetermined rule, according to the plurality of mobile terminals The urgency information with time information of the plurality of resource allocation requests to allocate resources to the plurality of mobile terminals in order.
  • a method for requesting resource allocation in a mobile terminal of a wireless communication network comprising the steps of: generating a resource allocation request including urgency information, the urgency The information carries time information; the resource allocation request is initiated to the next hop network device.
  • a method for assisting control resource allocation in a relay station of a wireless communication network comprising the steps of: a. receiving a resource allocation request from a mobile terminal, The resource allocation request includes urgency information with time information; b. processing delay of the resource allocation request by the relay station, and updating time information of the urgency information in the resource allocation request to obtain an update. Resource allocation request; c. Send the updated resource allocation request to the next hop network device.
  • a control apparatus for controlling resource allocation in a base station of a wireless communication network including: a first receiving apparatus, configured to receive a resource allocation request from a mobile terminal a first obtaining means, configured to acquire, according to the received resource allocation request from the mobile terminal, the urgency information with time information of the resource allocation request of the mobile terminal; wherein, the method further includes: a resource allocation device, configured to: The plurality of mobile terminals are allocated resources in order based on the urgency information with time information of the plurality of resource allocation requests from the plurality of mobile terminals based on the predetermined rule.
  • a requesting apparatus for requesting resource allocation in a mobile terminal of a wireless communication network, characterized by: generating means for generating a resource allocation request including urgency information The urgency information carries time information.
  • the first sending device is configured to initiate the resource allocation request to the next hop network device.
  • An advantage of the present invention over the prior art is that the time information of the mobile terminal's service data to be transmitted is added to the resource allocation request of the mobile terminal to express a certain degree of urgency of the service data to be transmitted, and the existing base station is overcome.
  • the resources are allocated for a plurality of mobile terminals according to the resource allocation request, the urgency of the time urgency of the mobile terminal service data cannot be known, and the resource allocation requests with different urgency levels can be distinguished and the multiple mobile terminals can be allocated according to predetermined rules.
  • the order of the resources is then allocated to provide a more average service delay and improve the performance of the wireless communication network.
  • FIG. 2 is a schematic diagram of a two-hop network topology in which a mobile terminal requests a base station to allocate resources through a relay station according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a system method for a mobile terminal to send a resource allocation request, a relay station to forward the resource allocation request, and a base station to allocate resources for a plurality of mobile terminals according to a resource allocation request, according to an embodiment of the present invention
  • Delay 4 is a schematic diagram of a frame structure of an enhanced resource allocation request header carrying a resource allocation request including time urgency information according to an embodiment of the present invention, where the time urgency information is an average waiting time of the mobile terminal to be transmitted service data.
  • Delay 5 is a schematic diagram of a contention-based CDMA resource allocation request and allocation mechanism in the prior art IEEE 802.16;
  • FIG. 6 is a flowchart of another system in which a mobile terminal sends a resource allocation request, a relay update, and forwards the resource request, and a system method for the base station to allocate resources for multiple mobile terminals according to a resource allocation request.
  • FIG. 7 is a diagram showing an example of a mobile terminal calculating an average waiting delay according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a three-hop network topology in which a mobile terminal requests a base station to allocate resources through two relay stations according to an embodiment of the present invention
  • FIG. 9 is a structural block diagram of a requesting device requesting resource allocation in a mobile terminal of a communication network according to an embodiment of the present invention.
  • FIG. 10 is a block diagram showing the structure of an auxiliary control device for assisting control resource allocation in a relay station of a communication network according to an embodiment of the present invention
  • FIG. 11 is a structural block diagram of a control device for controlling resource allocation in a base station of a communication network according to an embodiment of the present invention
  • Figure 12 is a block diagram showing another structure of a first obtaining means in a control device for controlling resource allocation in a base station of a communication network according to an embodiment of the present invention. detailed description
  • FIG. 2 is a schematic diagram of a two-hop network topology for a mobile terminal M to request a base station B to allocate resources to a base station B via a relay station R according to an embodiment of the present invention.
  • 3 is a flow chart of a system method for a mobile terminal M to send a resource allocation request to request a resource, a relay station R to forward a resource allocation request, and a base station B to allocate resources for a plurality of mobile terminals according to a resource allocation request, in accordance with an embodiment of the present invention.
  • the method of the present invention will now be described in detail with reference to Figures 2 and 3.
  • the time information in this embodiment is the flat of the service data to be transmitted in the mobile terminal M.
  • the time is generated, the mobile terminal sends a resource allocation request including the average generation time of its service data, and the relay station R directly performs relaying, and the base station B averages the service data included in the resource allocation request from the plurality of mobile terminals under its jurisdiction.
  • the generation of the time is allocated for resources that are communicated with the respective mobile terminals. The specific process is shown in Figure 3.
  • step S10 the mobile terminal M generates a resource allocation request including the average generation time of the service data to be transmitted.
  • the service data to be transmitted includes multiple batches of service data with different generation times, and the generation time of the service data to be transmitted is the arithmetic mean of the generation times of the plurality of batches of service data.
  • the average generation time is updated, that is, the average generation time is updated in real time as the business data changes.
  • the resource allocation request is carried by the enhanced resource allocation request header.
  • the resource allocation request is a bandwidth request
  • MAC General Media Intervention Control
  • Time information (6 bits): used to affirm the average generation time of the task data to the base station; resource allocation request (12 bits): how much resource is requested, such as the size of the bandwidth; connection identifier (16 bits): used to indicate the request Is the bandwidth of which connection is requested; Header check sequence (8 bits): Same as the header check sequence in 802.16.
  • the average generation time information of the 6-bit service data to be transmitted is absent in the six resource allocation request headers defined in the published IEEE 802.16d/e standard and the IEEE 802.16j draft. It should be understood by those skilled in the art that the data length for identifying the time information is not limited to 6 bits, and may be different according to the service delay requirement of the wireless communication system. And make adjustments.
  • the time length of the general TDD frame is 5 ms, and the time unit is 10 ms, that is, 1 means 10 ms, 2 means 20 ms, and 6 bits can represent 630 ms at most, corresponding to 126 frame time. length.
  • 6 bits are sufficient to represent the average generation time of the service data of each mobile terminal.
  • a plurality of time reference zeros need to be agreed in advance between the base station and the mobile terminal.
  • the bit length of the time information shown in FIG. 4 needs to be determined according to the length representing the absolute time measure.
  • step S11 the mobile terminal M transmits the resource allocation request to the relay station.
  • the transmission mechanism of the enhanced resource allocation request header is based on a contention-based CDMA resource allocation request sending mechanism that has been adopted in IEEE 802.16.
  • the mechanism for CDMA resource allocation request and allocation based on competition is shown in Figure 5.
  • the transmission mechanism of the CDMA resource allocation request is as described in the background, the mobile terminal M requests a base station to transmit a bandwidth using a ranging sub-channel or a dedicated resource request subchannel. Resource allocation request header. The subchannel is competed by all mobile terminals. Once the mobile terminal M sends a resource allocation code, the mobile terminal M uses the truncated binary exponential backoff algorithm to perform backoff.
  • the mobile terminal M After a delay, it retry to send the resource allocation code, if received, The CDMA allocation information element from the base station B responding to the resource allocation code, the mobile terminal M then transmits the enhanced resource allocation request header as shown in FIG. Then, the base station B transmits information such as time-frequency information, modulation mode, and the like of the resource allocated to the mobile terminal M to the mobile terminal M in the uplink allocated slot table. Then, the mobile terminal M transmits the service data to be transmitted, that is, the MAC protocol data unit, on the time-frequency resource allocated by the base station B.
  • the poll-based resource allocation request sending mechanism when it is the turn of the mobile terminal M to transmit the resource allocation request, the mobile terminal issues the resource allocation request message. Then, the base station B transmits information such as time-frequency information, modulation mode, and the like of the resource allocated to the mobile terminal M to the mobile terminal M in the uplink allocated slot table. Then, the mobile terminal M transmits the service data to be transmitted, that is, the number of MAC protocols, on the time-frequency resource allocated by the base station B. According to the unit.
  • the disclosed 802.16 protocol fully describes the sending mechanism of the resource allocation request, and the details of the sending mechanism need not be further described herein. It should be understood by those skilled in the art that the request sending process is not limited to the two sending modes, and other request mechanisms may be adopted.
  • the resource allocation request is forwarded to the base station via the relay station R.
  • the relay station R does not update the received resource allocation request from the mobile terminal, i.e., the relay station R implements the simple relay function in the prior art.
  • step S20 the relay station R receives the resource allocation request containing the generation time of the service data to be transmitted.
  • step S21 the relay station R forwards the request to the base station.
  • the base station ⁇ receives the resource allocation request of the mobile terminal ⁇ forwarded by the relay station R, acquires urgency information with time information according to the resource allocation request, and performs emergency according to resource allocation requests of multiple mobile terminals.
  • the degree information allocates resources for the plurality of mobile terminals in order based on certain rules.
  • step S30 the base station ⁇ receives a resource allocation request from the mobile terminal that contains the time of generation of the service data to be transmitted.
  • step S31 the base station acquires, from the resource allocation request, an average generation time of the to-be-transmitted service data of the mobile terminal.
  • step S32 the base station generates a time sequence based on the to-be-transmitted service data in each mobile terminal included in each resource allocation request based on a predetermined rule. Allocating resources to each mobile terminal in order.
  • the time information of the urgency information included in the resource allocation request generated by the mobile terminal is an average waiting delay of the service data to be transmitted, that is, the service data to be transmitted from the mobile terminal ⁇ is generated.
  • the average time interval between when the secondary resource allocation request is issued.
  • FIG. 6 is a flowchart showing a system method for a mobile terminal M to transmit a resource allocation request, a relay station R to update and forward a resource allocation request, and a base station B to allocate resources for a plurality of mobile terminals according to a resource allocation request, according to a second embodiment of the present invention. .
  • the method of the present invention will now be described in detail with reference to Figures 2 and 6 of the accompanying drawings.
  • step S10 the mobile terminal M generates a resource allocation request including urgency information, and the time information carried by the urgency information is an average waiting delay of the service data to be transmitted in the mobile terminal M, that is, from the mobile terminal M.
  • the average time interval between the service data to be transmitted and the current resource allocation request is sent.
  • the service data to be transmitted includes multiple batches of service data with different waiting delays, and the average waiting delay of the data to be transmitted is the arithmetic mean of the waiting delays of the plurality of batches of service data. Whenever new service data is generated or a part of the service data is sent, the average waiting delay is updated, that is, the average waiting delay is updated in real time as the business data changes.
  • the calculation of the average waiting delay is as shown in FIG. 7.
  • a certain time point is used as the reference time zero of the system.
  • the reference time zero can be synchronized by the base station with each mobile terminal.
  • the mobile terminal M is a burst service request resource of an existing 8 data packets.
  • the average generation time of the burst services of the 8 packets is an average of 50 ms of their generation time with respect to the reference time zero.
  • the base station B After the nth polling, the base station B allocates a certain resource to the mobile terminal M according to the resource allocation request described above, and four of the eight data packets of the mobile terminal M are transmitted. However, due to insufficient resources allocated by base station B, there are still 4 data packets not transmitted. Then, the average generation time of the four existing data packets to be transmitted is an average of 60 ms of their generation time with respect to the reference time zero.
  • a burst service of 8 data packets is newly generated in the mobile terminal M, and the resource allocation request is retransmitted as an existing resource request resource for all the to-be-transmitted services.
  • the average generation time of the existing 12 packets is their generation relative to the reference time zero.
  • the average value of time is 133.3ms.
  • the transmission time used for calculating the processing delay is not the actual time for the resource allocation request to be sent, but according to the mobile terminal M.
  • the resource allocation request may be carried by a header (as shown in FIG. 4) similar to the enhanced resource allocation request in the first embodiment described above.
  • the 6-bit time information in the enhanced resource allocation request header is average waiting delay information indicating the service data.
  • the unit of the waiting delay can be set by the base station during system initialization, and the default value can be 10ms. At this time, the 6-bit waiting delay information can indicate a waiting delay of up to 630ms.
  • the average waiting delay of the 6-bit service data to be transmitted is absent in the six resource allocation request headers defined in the published IEEE 802.16d/e standard and the IEEE 802.16j draft.
  • step Sir the mobile terminal M sends the resource allocation request to the relay station.
  • the sending mechanism of the request is the same as the first embodiment, and the contention-based CDMA resource allocation request sending mechanism adopted in IEEE 802.16 may be adopted, or the polling-based resource allocation request sending mechanism may be adopted.
  • the resource allocation request is updated by the relay station R and forwarded to the base station.
  • step S20 the relay station R receives a resource allocation request from the mobile terminal M containing an average waiting delay of the service data to be transmitted.
  • the average waiting delay is the average time interval emanating from the mobile terminal M from the generation of the service data to be transmitted to the resource allocation request.
  • the relay station R updates the average waiting delay in the resource allocation request to reflect the time interval from the generation of the service data to be transmitted in the mobile terminal M to the resource allocation request from the relay station. Specifically, the relay station extracts, from the resource allocation request, an average waiting delay in the mobile terminal M to the service to be transmitted in the mobile terminal M, and It adds the processing delay to the resource allocation request of the relay station, and updates the resource allocation request with the new average waiting delay as the traffic data to be transmitted in the mobile terminal M.
  • the processing delay of the relay station R to the resource allocation request refers to a time interval at which the relay station R transmits the updated resource allocation request and the relay station R receives the resource allocation request.
  • the time for calculating the resource allocation request for processing the delay is not the resource allocation request forwarding. Actual time, but an estimate based on the a priori processing delay of the relay station R.
  • the relay station R forwards the resource allocation request to the base station.
  • the base station B receives the resource allocation request of the mobile terminal M forwarded by the relay station R, and acquires the mobile terminal M according to the resource allocation request.
  • the average waiting delay of the service data to be transmitted is allocated resources for the plurality of mobile terminals in sequence according to the average waiting delay of the service data to be transmitted in the plurality of mobile terminals.
  • step S30 the base station B receives the resource allocation request from the mobile terminal M containing the average waiting delay of the data to be transmitted.
  • step S31 the base station B extracts the urgency of the resource allocation request of the mobile terminal M with the average waiting delay of the service data to be transmitted according to the received resource allocation request from the mobile terminal M.
  • the information that is, when the resource allocation request arrives at the base station B, the average waiting delay of the service data to be transmitted in the mobile terminal M is called a waiting delay outside the base station B, and is saved.
  • the base station B After the base station B receives the resource allocation request from the plurality of mobile terminals under its jurisdiction, in step S32, the base station will press according to the predetermined rule according to the total waiting delay of the service data to be transmitted in each mobile terminal.
  • the resources are allocated in sequence for a plurality of mobile terminals. For example, the mobile terminal that has a large total waiting delay for the service data to be transmitted is preferentially allocated resources.
  • the waiting delay of the to-be-transmitted service of the mobile terminal is the waiting delay and the resource allocation of the base station B to be transmitted in the mobile terminal when the resource allocation request sent by the mobile terminal arrives at the base station B. The sum of the processing delays requested in base station B.
  • the resource allocation request processes the delay in the base station B to the time interval between the current resource allocation time and the time when the base station B receives the resource allocation request.
  • the transmission rate of the radio wave carrying the service data is very processing delay, the elapsed time of the service data on the transmission path is short and can be ignored. Therefore, the time that the resource allocation request is sent from the network device is approximately equal to the time the request arrives at the next hop network device.
  • the delay of the service data on the transmission path may be calculated according to the distance between the mobile terminal, the relay station and the base station, and the attribute of the radio wave carrying the service data, and included in the average waiting delay of the service data. .
  • the need for the allocation request includes the average generation time or average waiting time of all the service data to be transmitted when the current resource allocation request is sent.
  • Delay that is, batches that do not distinguish between business data.
  • the business data of different service types is divided into different batches of business data; the business data of the same service type can also be divided into multiple batches, and the business data with smaller time difference is formed to constitute the business data of the same batch.
  • the average generation time only calculates the average generation time of these newly arrived services.
  • the number of requested resources and the average service generation time or average waiting delay are for the same group of pending service data.
  • the resource The urgency information with time information included in the allocation request is the above average generation time. If the same batch of service data is not all sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, the mobile terminal M is the remaining part of the batch service data (may also be the batch) All of the service data is a retransmission resource allocation request, and the retransmission resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the information indicating the retransmission can be represented by the reserved word of the extended type in the frame structure of FIG.
  • the relay station R does not perform any update processing on the received resource allocation request, and directly forwards it to the base station 8.
  • the base station B receives the resource allocation request sent by the mobile terminal M and contains the average generation time of the service data to be transmitted, that is, after the mobile terminal sends the resource allocation request for the first time of the service data of the batch, the base station B The average generation time is recorded.
  • the base station B determines that the retransmitted resource allocation request includes the information indicating the retransmission. After the resource allocation request is a retransmission request, the average generation time of the service data of the corresponding batch of the retransmission request may be found from the record.
  • the base station B performs resource allocation in the average generation time.
  • the base station B since the average generation time of the data service is only carried by the resource allocation request that the mobile terminal M transmits to the base station B for the first time and is recorded by the base station B. Then, upon receiving the retransmission resource allocation request, the base station B uses the average generation time of the data service recorded as the average generation time of part or all of the same batch of service data to be transmitted, and thus sends the service data part. In the case of the remaining part of the completion, this embodiment can only be used to roughly estimate the average generation time of the remaining service data. In order to solve the problem, preferably, in a case where the service data portion of the same batch is transmitted, the mobile terminal M recalculates the average generation time of the remaining portion of the service data, and puts the average generation time into the batch. In the remaining part of the resource allocation request for retransmission of the service data, the base station B then allocates resources for the remaining part of the service data according to the average generation time.
  • the resource The urgency information with time information included in the allocation request is the average waiting time between the generation time of the batch of service data to be transmitted and the time when the resource allocation request is issued. If the same batch of service data is not all sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, the mobile terminal M is the remaining part of the batch service data (may also be the batch) All of the service data) a retransmission resource allocation request, the retransmitted resource allocation request includes information indicating retransmission, up to the service of the batch The data is sent. Then do the same for the next batch of business data.
  • the relay station R processes the processing delay of the first resource allocation request and the service data to be transmitted in the first resource allocation request.
  • the waiting delay is added to obtain a waiting delay of the new service data to be transmitted, and the first resource allocation request is updated with the waiting delay of the new service data to be transmitted.
  • the updated first resource allocation request is then forwarded to the base station B.
  • the base station B determines whether the resource allocation request is the first transmission according to the retransmission information in the resource allocation request. If the resource allocation request is sent for the first time, the base station B obtains, from the resource allocation request, an average waiting delay of the service data to be transmitted in the mobile terminal M when the resource allocation request arrives at the base station B, which is called a waiting delay outside the base station. And save it.
  • the base station B acquires the time difference between the time when the resource allocation request arrives at the base station B and the time when the first resource allocation request arrives at the base station B, and the time difference is compared with the saved corresponding movement.
  • the average waiting delay of the service data to be transmitted in the terminal is added as a new average waiting delay of the service data to be transmitted, that is, the waiting delay outside the base station.
  • the processing delay of the base station B based on the service data to be transmitted among the plurality of mobile terminals under its jurisdiction and the corresponding resource allocation request from the mobile terminal in the base station B (called The size of the sum of the waiting delays in the base station is used to allocate resources for a plurality of mobile terminals under its jurisdiction.
  • the manner in which the base station B obtains the time difference between the time when the retransmitted resource allocation request arrives at the base station B and the time when the first time the resource allocation request arrives at the base station B includes at least the following two methods:
  • the base station records the time each time a resource allocation request sent by the mobile terminal M is received. At this time, the relay station R does not perform any update on the retransmitted resource allocation request, and directly forwards the retransmitted resource allocation request to the base station B.
  • the time information carried in the urgency information in the resource allocation request retransmitted by the mobile terminal M is the time interval between the sending time of the retransmitted resource allocation request and the sending time of the last transmitted resource allocation request.
  • the request for the resent resource allocation request When R forwards the retransmitted resource allocation request, R adds its processing delay to the above time interval.
  • the time information carried in the urgency information in the retransmitted resource allocation request message is the time interval between the transmission time of the retransmitted resource allocation request and the transmission time of the last transmitted resource allocation request, the base station B is in each case.
  • the existing base station outer waiting delay is added to the time interval in the retransmitted resource allocation request, and the added result is saved, and the added result is called the new base station.
  • the outer waiting delay is used as the base station outside waiting delay used when the base station B processes the next retransmission resource allocation request from the mobile terminal M.
  • the time information carried in the urgency information in the retransmitted resource allocation request message is the time interval between the transmission time of the retransmitted resource allocation request and the transmission time of the first transmission resource allocation request, and the base station B receives each time.
  • the existing base station outer waiting delay is added to the time interval in the retransmitted resource allocation request as a new base station outer waiting delay.
  • the mobile terminal M when the mobile terminal M first transmits the resource allocation request for the batch.
  • the urgency information with time information included in the resource allocation request is an average waiting time between the generation time of the batch of service data to be transmitted and the time when the resource allocation request is issued. If the same batch of service data is not all sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, the mobile terminal M is the remaining part of the batch service data (may also be the batch) All of the service data is a retransmission resource allocation request, and the retransmitted resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the relay station R upon receiving the resource allocation request from the mobile terminal M, the time at which the resource allocation request is received is saved.
  • the relay station R determines whether the resource allocation request is the first transmission, and obtains the waiting delay outside the station, and the obtaining process is related to the judgment result.
  • the relay station R acquires, from the resource allocation request, the service data to be transmitted in the mobile terminal M when the resource allocation request arrives at the relay station R.
  • the average waiting delay is called waiting for delay outside the relay station and is saved.
  • the relay station R acquires the time difference between the time when the resource allocation request arrives at the relay station R and the time when the first resource allocation request arrives at the relay station R, and the time difference is compared with the saved movement.
  • the average waiting delay of the service data to be transmitted in the terminal is added as a new average waiting delay of the service data to be transmitted, that is, the waiting delay outside the relay station.
  • the relay station R adds the processing delay for processing the resource allocation request to the acquired waiting delay outside the relay station, and then forwards the updated retransmitted resource allocation request to the base station B.
  • the relay station R adds the existing time interval between the waiting delay of the existing relay station and the resource allocation request of the retransmission after each receiving the resource allocation request of the retransmission, and saves the addition. As a result, the result of the addition is called the new relay station and the like.
  • the delay is to be used as the relay station waiting delay for the relay station R to process the next retransmission resource allocation request from the mobile terminal M.
  • the time information carried in the urgency information in the retransmitted resource allocation request message is the time interval between the transmission time of the retransmitted resource allocation request and the transmission time of the first transmission resource allocation request, and the relay station After each receiving the retransmitted resource allocation request, R adds the existing out-of-relay delay and the time interval in the retransmitted resource allocation request as the new waiting time outside the relay.
  • the relay station R records the time each time the resource allocation request transmitted by the mobile terminal M is received.
  • the resource allocation request current arrival time is subtracted from the first arrival time, and the difference is added to the existing waiting delay outside the relay station to wait for the new relay station to wait for the delay.
  • the relay station R forwards the updated resource allocation request to the base station B.
  • the processing performed by the base station B is exactly the same as in the second embodiment described above.
  • the base station B or the relay station R uses the average waiting delay of the data service recorded as the average waiting delay of part or all of the same batch of service data to be transmitted. For the remaining part of the part of the service data transmission, the average waiting delay of the remaining service data will change. This embodiment can only be used to roughly estimate the average waiting delay of the remaining service data.
  • the time interval is based on the waiting delay of the remaining partial service data. Certain corrections to reflect changes in the average latency of the remaining business data.
  • the mobile terminal M can merge the remaining service data of the batch into the next batch of service data, and calculate the time information of the next batch of service data (including the average generation time or the average waiting delay). And then sending a resource allocation request for the next batch of service data, the resource allocation request is sent for the first time.
  • the mobile terminal M uses the methods as described in the first to fifth embodiments for each connected service data to respectively request resources for each connected service data.
  • the same batch in the third to fifth embodiments refers to one burst of data of the same connected service, and one burst of data blocks is a group of data packets continuously generated by the service source. The time of generation of different bursts is quite different.
  • the urgency information with time information in the resource allocation request sent by each mobile terminal further includes QoS information
  • the predetermined rule includes time information according to the urgency information and combined
  • the QoS information is used to sequentially perform resource allocation for the plurality of mobile terminals.
  • resource allocation requests include the following four categories: Active Grant Service (UGS), Real-Time Polling Service (rtPS), Non-Real-Time Polling Service (nrtPS), and Best-effort Service (BE).
  • UGS Active Grant Service
  • rtPS Real-Time Polling Service
  • nrtPS Non-Real-Time Polling Service
  • BE Best-effort Service
  • rtPS has the highest priority
  • nrtPS is the second
  • BE has the lowest priority.
  • the base station first allocates the highest priority request for the total waiting delay of the service data to be transmitted or the earliest generation time.
  • the above five embodiments detail the case where the resource allocation request is sent by the mobile terminal M and forwarded to the base station B via the relay station R.
  • the present invention is not limited to the network topology shown in FIG.
  • the topology of the wireless communication network without the relay station that is, the resource allocation request is directly sent by the mobile terminal to the base station
  • the topology of the multi-hop relay wireless communication network that is, the resource allocation request is sent to the base station via multiple relay stations
  • the method of the invention is equally applicable.
  • FIG. 8 is a schematic diagram of a three-hop network topology in which a mobile terminal requests resources from a base station through two relay stations.
  • the mobile terminal M does not directly provide the total waiting delay of the service data in the case of retransmission, as described in the fourth embodiment, the total waiting delay can be calculated by the base station B, The calculation can be performed by any of the relay stations R and R as described in the fifth embodiment.
  • FIG. 9 is a block diagram showing the structure of a requesting device requesting resource allocation in a mobile terminal of a communication network in accordance with an embodiment of the present invention.
  • the requesting device 10 includes a generating device 11 and a first transmitting device 12.
  • the generating means 11 generates a resource allocation request containing urgency information with time information.
  • the first transmitting device 12 transmits the generated resource allocation request message to the relay station R.
  • the time information includes an average generation time or an average waiting delay of all the service data to be transmitted in the mobile terminal M.
  • the band included in the resource allocation request is the above average generation time. If the same batch of service data is not sent after the mobile terminal M sends the resource allocation request for the first time If all of the data can be sent to the base station B, the mobile terminal M retransmits the resource allocation request for the remaining part of the batch of service data (and possibly all of the batch of service data), and the retransmitted resource allocation request includes There is information indicating retransmission until the batch of business data is sent. Then do the same for the next batch of business data.
  • the band included in the resource allocation request is the band included in the resource allocation request.
  • the urgency information with time information is the average waiting time between the generation time of the batch of service data to be transmitted and the time when the resource allocation request is issued. If the same batch of service data is not sent to the base station B after the mobile terminal M first sends the resource allocation request, the mobile terminal M is the remaining part of the batch service data (may also be the batch) All of the service data is a retransmission resource allocation request, and the retransmitted resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the retransmitted resource allocation request may further include a time interval between the time when the current resource allocation request is sent and the time when the resource allocation request is sent last time or the first time.
  • FIG 10 is a block diagram showing the construction of an auxiliary control device 20 for assisting control resource allocation in a relay station of a communication network in accordance with an embodiment of the present invention.
  • the auxiliary control device 20 includes a second receiving device 21, an updating device 22, and a second transmitting device 23.
  • the updating device 22 may further include a third judging device 221, a sixth obtaining device 222, and a seventh obtaining device 223.
  • the network topology shown in FIG. 2 is taken as an example, and the process for assisting the control resource allocation by the auxiliary control device 20 located in the relay station R will be described in detail.
  • the second receiving device 21 receives a resource allocation request from the mobile terminal M, and the resource allocation request includes urgency information with time information.
  • the updating means 22 updates the resource allocation request based on the processing delay of the resource allocation request.
  • the second transmitting device 23 transmits the request to the base station B.
  • the update process of the update device 202 includes three scenarios. The following will be respectively Explain these three situations.
  • the situation 1.1 is based on the premise that the time information carried in the urgency information in the resource allocation request sent by the mobile terminal M is the average waiting delay of the service data to be transmitted in the mobile terminal M, that is, from the generation of the service data to be transmitted. The time interval between the mobile terminal M transmitting the resource allocation request.
  • the updating device 22 updates the average waiting delay in the resource allocation request to reflect the time interval from the generation of the to-be-transmitted service in the mobile terminal M to the resource allocation request from the relay station.
  • the update device 22 extracts, from the resource allocation request, an average waiting delay in the mobile terminal M to the service to be transmitted in the mobile terminal M, and adds it to the processing delay of the resource allocation request by the relay station, The result of the addition is used as a new average waiting delay of the traffic data to be transmitted in the mobile terminal M to update the resource allocation request.
  • Case 1.2 is based on the premise that, in consideration of the case where the service data to be transmitted is batched, for the same batch of service data, when the mobile terminal M first transmits a resource allocation request for the batch, the resource allocation request is The included urgency information with time information is the waiting delay for the batch.
  • the same batch of service data cannot be sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, and the mobile terminal M is the remaining part of the batch service data (may also be the service of the batch)
  • All of the data is a retransmission resource allocation request, and the retransmitted resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the retransmitted resource allocation request may further include a time interval between the time when the current resource allocation request is sent and the time when the last time or the first time the resource allocation request is sent.
  • the updating means 222 For the resource allocation request transmitted for the first time, the updating means 222 performs the operation as described in the case 1.1.
  • the updating means 222 extracts the time interval from the resource allocation request, and adds it to the processing delay of the resource allocation request by the relay station, and adds the result as a new time. Interval to update the resource allocation request.
  • Case 1.3 is based on the premise that, in consideration of the case where the service data to be transmitted is batched, for the same batch of service data, when the mobile terminal M first sends a resource allocation request for the batch, the resource allocation request is
  • the included urgency information with time information is the average waiting time between the generation time of the batch of service data to be transmitted and the time when the resource allocation request is issued.
  • the same batch of service data cannot be sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, and the mobile terminal M is the remaining part of the batch service data (may also be the service of the batch)
  • All of the data is a retransmission resource allocation request, and the retransmitted resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the retransmitted resource allocation request may further include a time interval between the time when the current resource allocation request is sent and the time when the last time or the first time the resource allocation request is sent
  • the judging means 221 judges whether or not the resource allocation request is the first transmission based on the retransmission information included in the resource allocation request.
  • the sixth obtaining device 222 acquires, from the resource allocation request, the service data to be transmitted in the mobile terminal M when the resource allocation request arrives at the relay station R.
  • the average waiting delay is saved and saved; and the sum of the average waiting delay and the processing delay of the relay station R to the resource allocation request is substituted for the service data to be transmitted in the mobile terminal M when the resource allocation request arrives at the relay station R.
  • the average wait latency is to obtain a new resource allocation request.
  • the seventh obtaining means 223 acquires the time difference between the time when the retransmitted resource allocation request arrives at the relay station R and the time when the first resource allocation request arrives at the relay station R, and Adding the time difference value to the saved average waiting delay of the service data to be transmitted in the corresponding mobile terminal as a new average waiting delay when the service data to be transmitted arrives at the relay station; The sum of the new average waiting delay and the processing delay of the relay station for the resource allocation request is placed in the office. In the resource allocation request, the new resource allocation request is obtained.
  • the seventh obtaining means 223 acquires the retransmitted resource allocation request to the relay station, and includes the following three types:
  • the first method is applicable to the case where the urgency information in the retransmission resource allocation request message carries the time information of the retransmission resource allocation request transmission time and the transmission time of the last transmission resource allocation request.
  • the seventh obtaining means 223 will save the existing one after the second receiving means 21 receives the retransmitted resource allocation request.
  • the time difference of the time of R is added to the time interval in the retransmitted resource allocation request, and the added result is saved, and the result of the addition is said to be the time when the new resource allocation request of the retransmission arrives at the relay station R and the first time.
  • the time difference of the time when the resource allocation request arrives at the relay station R as the time when the relay station R processes the resource allocation request for the next retransmission from the mobile terminal M, and the time when the resource allocation request arrives at the relay station R and the first resource
  • the time interval of the transmission time of the transmitted resource allocation request is the time difference between the time when the retransmitted resource allocation request arrives at the relay station R and the time when the first resource allocation request arrives at the relay station R.
  • the seventh obtaining means 223 records the time each time the resource allocation request transmitted by the mobile terminal M is received.
  • the current resource allocation request arrival time is subtracted from the first arrival time as the time difference between the time when the new resource allocation request of the retransmission arrives at the relay station R and the time when the first resource allocation request arrives at the relay station R.
  • FIG. 11 is a block diagram showing the structure of a control device 30 for controlling resource allocation in a base station of a wireless communication network in accordance with an embodiment of the present invention.
  • the control device 30 package The first receiving device 31, the first obtaining device 32, the resource allocating device 33, and the second obtaining device 34 are included.
  • the first obtaining device 32 further includes a first determining device 3211, a third obtaining device 3212, and a searching device 3213.
  • optional sub-devices in many preferred embodiments are shown in FIG. 11, and those skilled in the art will understand from the teachings of the present invention that only the first receiving device 31, the first obtaining device 32, and the resources are
  • the dispensing device 33 is a device necessary to practice the invention, and the other sub-devices are optional devices.
  • the network topology shown in FIG. 2 is taken as an example, and the process of controlling the resource allocation by the control device 30 located in the base station B is described in detail.
  • the first receiving device 31 receives a resource allocation request from the mobile terminal M forwarded by the relay station R, and the resource allocation request includes urgency information with time information.
  • the first obtaining means 32 acquires the urgency information with time information of the resource allocation request of the mobile terminal M based on the received resource allocation request from the mobile terminal M.
  • the resource allocating means 33 allocates the plurality of mobile terminals under its jurisdiction in order based on the urgency information with time information of the plurality of resource allocation requests from the plurality of mobile terminals under its jurisdiction based on the predetermined rule. Resources.
  • the operation procedures of the first obtaining means 32 and the resource allocating means 33 will be described in detail in four cases in accordance with the specific types of urgency information.
  • the situation is based on the premise that the time information carried in the urgency information in the resource allocation request sent by the mobile terminal M is the average generation time of all the data to be transmitted in the mobile terminal M.
  • the first obtaining means 32 acquires an average generation time of the service data to be transmitted in the mobile terminal M from the resource allocation request.
  • the resource allocating means 33 allocates resources for each mobile terminal in order according to the order of the average generation time of the service data to be transmitted in each mobile terminal.
  • the situation is based on the premise that the resource allocation request sent by the mobile terminal M
  • the time information carried in the urgency information is the average waiting delay of all the data to be transmitted in the mobile terminal M.
  • the first obtaining device 32 obtains, from the resource allocation request, an average waiting delay of the service data to be transmitted in the mobile terminal M, where the average waiting delay is the time from the generation of the service data to be transmitted to the resource allocation request to the base station B. interval.
  • the resource allocating means 33 allocates resources for each mobile terminal in order according to the size of the total waiting delay of the service data to be transmitted in each mobile terminal.
  • the total waiting delay of the to-be-transmitted service of the mobile terminal is the average waiting delay of the to-be-transmitted service data acquired by the first acquiring device 32 from the resource allocation request, and the processing of the resource allocation request in the base station B. Delayed sum.
  • the second obtaining means 34 obtains the processing delay of the resource allocation request in the base station B, and the processing delay refers to the time interval between the resource allocation time and the time when the base station B receives the resource allocation request.
  • the situation is based on the premise that, in consideration of the case where the service data to be transmitted is batched, for the same batch of service data, when the mobile terminal M first sends a resource allocation request for the batch, the resource allocation
  • the urgency information with time information contained in the request is the average generation time. If the same batch of service data is not all sent to the base station B after the mobile terminal M sends the resource allocation request for the first time, the mobile terminal M is the remaining part of the batch service data (may also be the batch) All of the service data is a retransmission resource allocation request, and the retransmission resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next transaction data.
  • the first judging means 3211 judges whether or not the resource allocation request is the first transmission based on the retransmission information.
  • the third obtaining device 3212 acquires the average generation time of the service data to be transmitted in the mobile terminal M from the resource allocation request, and saves;
  • the searching means 3213 searches for the average generation time of the saved service data to be transmitted in the mobile terminal M corresponding to the retransmission resource allocation request. Then, the operation performed by the resource allocating device 33 is the same as in the case 2.1.
  • the situation is based on the premise that, in consideration of the case where the service data to be transmitted is batched, for the same batch of service data, when the mobile terminal first sends a resource allocation request for the batch, the resource allocation
  • the urgency information with time information contained in the request is the average waiting time between the generation time of the batch of service data to be transmitted and the time when the resource allocation request is issued.
  • the same batch of service data is not sent to the base station after the mobile terminal sends the resource allocation request for the first time, and the mobile terminal is the remaining part of the batch service data (may also be the service of the batch)
  • All of the data is a retransmission resource allocation request, and the retransmitted resource allocation request includes information indicating retransmission until the service data of the batch is transmitted. Then do the same for the next batch of business data.
  • the retransmitted resource allocation request may further include a time interval between the time when the current resource allocation request is sent and the time when the resource allocation request was sent last time or the first time.
  • the first obtaining means 32 includes a second judging means 3221, a fourth obtaining means 3222 and a fifth obtaining means 3223.
  • the judging means 3221 judges whether or not the resource allocation request is the first transmission based on the retransmission information included in the resource allocation request.
  • the fourth obtaining unit 3222 acquires, from the resource allocation request, the service data to be transmitted in the mobile terminal when the resource allocation request arrives at the base station. The average wait latency is saved.
  • the fifth obtaining means 3223 obtains the time difference between the time when the retransmitted resource allocation request arrives at the local base station and the time when the first resource allocation request arrives at the base station, And adding the time difference value to the saved average waiting delay of the service data to be transmitted in the corresponding mobile terminal ⁇ as the new average waiting delay of the service data to be transmitted.
  • the fifth obtaining means 3223 acquires at least the time difference between the time when the retransmitted resource allocation request arrives at the base station and the time when the first resource allocation request arrives at the base station. It includes the following two types:
  • the fifth obtaining means 3223 records the time each time the resource allocation request transmitted by the mobile terminal M is received. At this time, the relay station R does not perform any update on the retransmitted resource allocation request, and directly forwards the retransmitted resource allocation request to the base station B.
  • the time information carried in the urgency information in the resource allocation request retransmitted by the mobile terminal M is the time interval between the sending time of the retransmitted resource allocation request and the sending time of the last transmitted resource allocation request. Or the time interval between the sending time of the retransmitted resource allocation request and the sending time of the first-time resource allocation request.
  • the relay station R forwards the retransmitted resource allocation request, it adds its processing delay to the above time interval.
  • the fifth obtaining device 3223 after each receiving device 31 receives the retransmitted resource allocation request, adding the existing base station waiting delay and the time interval in the retransmitted resource allocation request, and saving the added result,
  • the result of the addition is a new base station waiting delay, that is, the time difference between the time when the retransmitted resource allocation request arrives at the base station B and the time when the first resource allocation request arrives at the base station B, and is processed as the fifth obtaining means 3223.
  • the fifth obtaining means 3223 is Each time the first receiving device 31 receives the retransmitted resource allocation request, the existing base station outer waiting delay is added to the time interval in the retransmitted resource allocation request as a new base station waiting delay. That is, the time difference between the time when the retransmitted resource allocation request arrives at the base station B and the time when the first resource allocation request arrives at the base station B
  • the operation performed by the resource allocating device 33 is the same as in the case 2.2.
  • the urgency information with time information in the resource allocation request sent by each mobile terminal further includes QoS information
  • the predetermined rule includes time information according to the urgency information and is sequentially combined with the QoS information. Entering the plurality of mobile terminals The order in which the rows are allocated.
  • resource allocation requests include the following four categories: Active Grant Service (UGS), Real-Time Polling Service (rtPS), Non-Real-Time Polling Service (nrtPS), and Best-effort Service (BE).
  • UGS Active Grant Service
  • rtPS Real-Time Polling Service
  • nrtPS Non-Real-Time Polling Service
  • BE Best-effort Service
  • rtPS has the highest priority
  • nrtPS is the second
  • BE has the lowest priority.
  • the resource allocating means 33 first allocates the highest priority request for the maximum waiting delay or the average generation time of the to-be-transmitted service data.
  • the manner of obtaining the total waiting delay of the service data to be transmitted in the mobile terminal is various and is not limited by the manners listed in the present specification.
  • the time information is not limited to the average waiting delay or average generation time described above, and may include other forms.
  • the present invention has been described above by taking WiMAX as an example, and those skilled in the art should understand that the present invention is equally applicable to other wireless communication networks.

Description

用于资源分配请求和分配的方法与装置 技术领域
本发明涉及无线通信领域用于请求和分配通信资源的方法与装置, 尤其涉及移动终端中用于请求资源分配的方法及装置, 基站中用于控制 资源分配的方法及装置, 以及中继站中用于辅助控制资源分配的方法及 装置。 背景技术
在无线通信领域中, 无线通信资源的请求和分配是一个重要的问 题, 在各种通信方式下, 发展出了其各自用于无线通信资源分配请求和 分配的方法。 例如在 WiMAX系统中, 无线通信资源的请求和分配采用 按需多址接入 ( DAMA, Demand Assigned Multiple Access ) 方式进行。 在 DAMA方式下, 当移动终端需要向基站发送业务数据时, 它必须将 首先向基站发出带宽请求( Bandwidth Request )。 IEEE 802.16的公开标 准 802.16d/e及草案 802.16j提供了两种 DAMA机制:基于竟争的 CDMA 带宽请求与基于轮询的带宽请求。 这两种方案中, 移动终端都使用带宽 请求头部 ( Bandwidth Request Header )来承载其带宽请求, 并将此带宽 请求头部发送给基站。 其中, 基于竟争的 CDMA 带宽请求是移动终端 使用测距子信道( Ranging sub-channel )或专用的资源请求子信道向基站 请求一段带宽以发送其带宽请求头部, 该子信道由多个移动终端竟争, 一旦冲突发生, 移动终端的带宽请求没有成功发送至下一跳网络设备, 该移动终端则使用截断二进制指数退避(Backoff)算法进行退避, 在等 待一定时延后重试; 基于轮询的带宽请求是基站对所有移动终端进行依 次轮询, 以检测其是否有带宽请求, 若该移动终端有带宽请求, 则其将 该请求发送至下一跳网络设备, 最终到达基站。 基站收到带宽请求头部 后, 将按照信道容量与带宽请求为移动终端分配带宽。 已公开的 802.16d/e标准与 802.16j草案定义了五种带宽请求头部, 其中包括增量 带宽请求头部(802.16d )、 聚集带宽请求头部(802.16d )、 带宽 +上行发 射功率报告头部 ( 802.16e )、 带宽 +载波与干扰和噪声比报告头部 ( 802.16e )、 带宽 +上行休眠控制头部(802.16e )和中继站带宽请求头部 ( 802.16j )。 其中, 典型的 802.16d定义的带宽请求头部结构及其字段意 义如附图 1所示。 通过这些头部信息, 移动终端可以将其带宽请求的连 接标识和带宽大小告知基站。
但是, 在现有技术中, 这些头部信息都不能反映该请求的待传输的 业务数据的时间紧急程度, 比如该业务数据的等待时延, 该已等待时延 包括可能存在的带宽请求消息緩沖时延、 带宽请求消息发送沖突回避时 延和中继站处理时延等, 也可能包括由于当次带宽请求被拒绝, 移动终 端等待一段时间后重新发送该资源分配请求消息的等待时延。 如果基站 不考虑这些信息, 那它就会对已受沖突影响而延迟的请求和那些未延迟 的请求不加区别地分配资源, 这种分配策略是不合理的, 它不能提供较 短的服务延迟和较好的系统公平性。 在基于中继的多跳网络中, 由于可 能出现更长的緩沖、 中继和传播延时及更多的资源竟争冲突, 这一问题 尤其严重。 发明内容
为了解决现有技术的上述缺点, 本发明提出了一种用于资源分配请 求和分配的技术方案, 基站基于一定准则, 根据多个移动终端中待传输 业务数据的时间紧急程度信息, 按一定顺序为各个移动终端分配资源, 从而提供较平均的服务延迟和较好的系统公平性。 在移动终端的资源分 配请求中承载该移动终端中待传输的业务数据的时间紧急程度信息, 该 时间信息指示了该移动终端的待传输的业务数据的时间紧急程度, 例如 业务数据的生成时间或等待时延。 中继站根据其对该业务数据的资源分 配请求的转发处理, 将其所耗的时间纳入到该业务数据的时间紧急程度 信息中。 基站对多个移动终端进行资源分配时, 能够对各个时间紧急程 度不同的资源分配请求加以区别并按预定规则, 决定对该多个移动终端 分配资源的顺序继而进行资源分配, 以降低系统的平均服务延时, 提高 无线通信网络的性能表现。 根据本发明的第一个方面, 提供了一种在无线通信网络的基站中用 于控制资源分配的方法, 该方法包括如下步骤: i.接收来自移动终端的 资源分配请求; ii.根据所接收的来自移动终端的资源分配请求, 获取所 述移动终端的资源分配请求的带有时间信息的紧急程度信息; 其中, 该 方法还包括以下步骤: iii.基于预定规则,根据来自多个移动终端的多个 资源分配请求的带有时间信息的紧急程度信息, 来按顺序为所述多个移 动终端分配资源。
根据本发明的第二个方面 , 提供了一种在无线通信网络的移动终端 中用于请求资源分配的方法, 其特征在于, 包括如下步骤: 生成包含紧 急程度信息的资源分配请求, 该紧急程度信息带有时间信息; 将所述资 源分配请求发起给下一跳网络设备。
根据本发明的第三个方面, 提供了一种在无线通信网络的中继站中 用于辅助控制资源分配的方法, 其特征在于, 该方法包括如下步骤: a. 接收来自移动终端的资源分配请求, 该资源分配请求中包含带有时 间信息的紧急程度信息; b. 居中继站对该资源分配请求的处理时延, 更新所述资源分配请求中的紧急程度信息的时间信息, 以获得一个更新. 后的资源分配请求; c. 将所述更新后的资源分配请求发送给下一跳网 络设备。
根据本发明的第四个方面, 提供了一种在无线通信网络的基站中用 于控制资源分配的控制装置, 其特征在于, 包括: 第一接收装置, 用于 接收来自移动终端的资源分配请求; 第一获取装置, 用于根据所接收的 来自移动终端的资源分配请求, 获取所述移动终端的资源分配请求的带 有时间信息的紧急程度信息; 其中, 还包括: 资源分配装置, 用于基于 预定规则, 根据来自多个移动终端的多个资源分配请求的带有时间信息 的紧急程度信息, 来按顺序为所述多个移动终端分配资源。
根据本发明的第五个方面, 提供了一种在无线通信网络的移动终端 中用于请求资源分配的请求装置, 其特征在于, 包括: 生成装置, 用于 生成包含紧急程度信息的资源分配请求, 该紧急程度信息带有时间信 息; 第一发送装置, 用于将所述资源分配请求发起给下一跳网络设备。 根据本发明的第六个方面, 提供了一种在无线通信网络的中继站中 用于辅助控制资源分配的辅助控制装置, 其特征在于, 包括: 第二接收 装置, 用于接收来自移动终端的资源分配请求, 该资源分配请求中包含 带有时间信息的紧急程度信息; 更新装置, 用于根据中继站对该资源分 配请求的处理时延, 更新所述资源分配请求中的紧急程度信息的时间信 息, 以获得一个更新后的资源分配请求; 第二发送装置, 用于将所述更 新后的资源分配请求发送给下一跳网络设备。
本发明相对于现有技术的优点在于, 在移动终端的资源分配请求中 加入了该移动终端的待传输业务数据的时间信息, 以表达待传输业务数 据一定的紧急程度, 克服了现有的基站根据资源分配请求为多个移动终 端分配资源时无法了解移动终端业务数据时间紧急程度的缺陷, 能够对 各个时间紧急程度不同的资源分配请求加以区别并按预定规则, 决定对 该多个移动终端分配资源的顺序继而进行资源分配, 以提供较平均服务 的延时, 提高无线通信网络的性能。 附图说明
通过参照附图阅读以下所作的对非限制性实施例的详细描述, 本发 明的其它特征、 目的和优点将会变得更明显。 在附图中, 相同和相似的 附图标记代表相同或相似的装置或方法步骤。 示意图;
图 2为才艮据本发明一个具体实施例, 移动终端经过一个中继站请求 基站为其分配资源的两跳网络拓朴示意图;
图 3为根据本发明一个具体实施例, 移动终端发送资源分配请求、 中继站转发该资源分配请求和基站根据资源分配请求为多个移动终端 分配资源的系统方法的流程图;
图 4为根据本发明一个具体实施例, 承载包含时间紧急程度信息的 资源分配请求的增强型资源分配请求头部的帧结构示意图, 该时间紧急 程度信息为移动终端的待传输业务数据的平均等待时延; 图 5为现有技术 IEEE 802.16中 , 基于竟争的 CDMA资源分配请求 和分配机制的示意图;
图 6为 居本发明一个具体实施例的另一个系统流程图, 移动终端 发送资源分配请求、 中继器更新并转发该资源请求和基站根据资源分配 请求为多个移动终端分配资源的系统方法的流程图;
图 7为根据本发明一个具体实施例, 移动终端计算平均等待时延的 示例图;
图 8为 居本发明一个具体实施例, 移动终端经过两个中继站请求 基站为其分配资源的三跳网络拓朴示意图;
图 9为根据本发明一个具体实施例, 在通信网络的移动终端中请 求资源分配的请求装置的结构框图;
图 10为根据本发明一个具体实施例, 在通信网络的中继站中辅 助控制资源分配的辅助控制装置的结构框图;
图 11 为根据本发明一个具体实施例, 在通信网络的基站中控制 资源分配的控制装置的结构框图;
图 12 为根据本发明一个具体实施例, 在通信网络的基站中控制 资源分配的控制装置中的第一获取装置的另一个结构框图。 具体实施方式
下面将参照图 2至图 8, 从系统方法的角度对本发明的多个具体实 施例进行详述。
第一实施例
图 2为根据本发明一个具体实施例, 移动终端 M经过中继站 R向 基站 B请求基站 B为其分配资源的两跳网络拓朴示意图。图 3为根据本 发明的一个具体实施例,移动终端 M发送资源分配请求以请求资源、 中 继站 R转发资源分配请求和基站 B根据资源分配请求为多个移动终端分 配资源的系统方法的流程图。 下面将参照附图 2和附图 3, 对本发明的 方法进行详述。
本实施例中所述时间信息为移动终端 M 中待传输的业务数据的平 均生成时间, 移动终端发送包含其业务数据平均生成时间的资源分配请 求, 中继站 R直接进行中继, 基站 B根据来自其所辖的多个移动终端的 资源分配请求中所包含的业务数据的平均生成时间的先后分配用于与 各个移动终端通信的资源。 具体的流程如图 3所示。
首先,在步骤 S10中,移动终端 M生成包含其待传输的业务数据的 平均生成时间的资源分配请求。
待传输的业务数据包括多批生成时间不同的业务数据, 待传输业务 数据的生成时间为该多批业务数据生成时间的算术平均值。 每当有新的 业务数据生成时或者发送完一部分业务数据后, 平均生成时间就进行更 新, 即平均生成时间随着业务数据的变化而进行实时更新。
在本实施例中, 该资源分配请求通过增强型资源分配请求头部承 载。 以 WiMAX无线通信系统为例, 资源分配请求即是带宽请求, 该增 强型资源分配请求头部的帧结构如图 4所示, 其中各部分说明如下: 头部类型(1 比特): 0=—般媒体介入控制 (MAC ) 头部, 1=资源分 配请求头部;
加密控制(1比特): 0=负荷未加密, 1=负荷已加密;
类型(1 比特): 用于 II 类媒体介入控制信令头部的类型域编码 (HT/EO0bll), 0=反馈头部, 1=扩展 II类媒体介入控制信令头部; 扩展类型 (3比特): 用于 II类媒体介入控制信令头部的扩展类型域 编码, 0=中继站资源分配请求头, 1=中继站上行专用信道(UL— DCH ) 请求头, 2=扩展资源分配请求头, 3-7保留;
时间信息 (6比特): 用于向基站申明该任务数据的平均生成时间; 资源分配请求 (12比特): 请求资源的多少, 例如带宽的大小; 连接标识 (16比特): 用于表明该请求是在请求哪个连接的带宽; 头部校验序列(8比特): 与 802.16中的头部校验序列作用相同。 该 6 比特的待传输的业务数据的平均生成时间信息在已公开的 IEEE 802.16d/e标准和 IEEE 802.16j草案中定义的 6种资源分配请求头 部中都是没有的。 本领域的普通技术人员应能理解, 用于标识时间信息 的数据长度不限于 6bit, 可以根据无线通信系统的服务延时要求的不同 而进行调整。 对于现有的 WiMAX无线通信系统而言, 一般 TDD帧的 时间长度为 5ms, 设时间单位为 10ms, 即 1表示 10ms, 2表示 20ms, 则 6个 bit最多可以表示 630ms,对应 126个帧的时间长度。对于基站 B 为其所辖的多个移动终端进行资源分配时, 6个 bit已足够表示各个移动 终端业务数据的平均生成时间。 当然此时基站和移动终端之间需要事先 约定多个时间参考零点。 当然, 如果平均生成时间采用绝对时间量度, 则图 4中所示的时间信息的 bit长度需要根据表示绝对时间量度的长度 而定。
然后,在步骤 S11中,移动终端 M将该资源分配请求发送给中继站
R。
具体的, 在本实施例中, 该增强型资源分配请求头部的发送机制基 于 IEEE 802.16中已采用的基于竟争的 CDMA资源分配请求发送机制。 基于竟争的 CDMA资源分配请求和分配的机制如图 5所示。 在请求过. 程中, CDMA资源分配请求的发送机制如背景技术中所述,移动终端 M 使用测距子信道(Ranging Sub-channel )或专用的资源请求子信道向基 站请求一段带宽以发送其资源分配请求头部。 该子信道由所有移动终端, 竟争, 一旦在移动终端 M发送资源分配码时发生沖突, 移动终端 M使 用截断二进制指数退避算法进行退避, 延迟一段时间后重新尝试发送资 源分配码, 如果接收到来自基站 B发来的响应资源分配码的 CDMA分 配信息单元,则移动终端 M随后发送如图 4所示增强型资源分配请求头 部。 然后基站 B在上行链路分配时隙表中将为移动终端 M分配的资源 的时频信息、 调制方式等信息发送给移动终端 M。 然后移动终端 M在 基站 B分配的时频资源上发送其中待传输的业务数据, 即 MAC协议数 据单元。
在另一种情况下, 在基于轮询的资源分配请求发送机制中, 当轮到 移动终端 M发送资源分配请求时, 移动终端将该资源分配请求消息发 出。 然后基站 B在上行链路分配时隙表中将为移动终端 M分配的资源 的时频信息、 调制方式等信息发送给移动终端 M。 然后移动终端 M在 基站 B分配的时频资源上发送其中待传输的业务数据, 即 MAC协议数 据单元。 , 已公开的 802.16协议中对资源分配请求的发送机制做了充分的说 明, 本说明书在此对发送机制的细节不需进行更深入的描述。 本领域的 普通技术人员应能理解, 该请求发送过程并不限于这两发送方式, 可以 采用其他的请求机制。
在本实施例中, 该资源分配请求经中继站 R转发至基站 Μ。 中继站 R对接收到的来自移动终端 Μ的资源分配请求不作更新处理, 即中继站 R实现现有技术中的简单中继功能。
具体地, 在步骤 S20中, 中继站 R接收到该含有待传输业务数据的 生成时间的资源分配请求。
然后, 在步骤 S21中, 中继站 R将该请求转发给基站 Β。
在本实施例中, 基站 Β接收到中继站 R转发的移动终端 Μ的资源 分配请求, 根据该资源分配请求获取其带有时间信息的紧急程度信息, 并根据多个移动终端的资源分配请求的紧急程度信息基于一定规则按 顺序为该多个移动终端分配资源。
具体的, 在步骤 S30中, 基站 Β接收到来自移动终端 Μ的含有待 传输业务数据生成时间的资源分配请求。
在步骤 S31中,基站从该资源分配请求中获取移动终端 Μ的待传输 业务数据的平均生成时间。
在基站为其所辖的多个移动终端分配通信资源时, 在步骤 S32中, 基站将基于预定规则, 根据各个资源分配请求中包含的各个移动终端中 的待传输业务数据生成时间的先后, 来按顺序为各个移动终端分配资 源。
第二实施例
在第二实施例中, 移动终端 Μ生成的资源分配请求中所包含的紧急 程度信息的时间信息为其中待传输业务数据的平均等待时延, 即从移动 终端 Μ 中待传输的业务数据产生到当次资源分配请求发出之间的平均 时间间隔。 在基站 Β为其所辖的各个移动终端分配资源时, 根据此时各 个移动终端中待传输业务数据的平均等待时延的大小来按顺序为各个 移动终端分配资源。
图 6示出了根据本发明的第二实施例,移动终端 M发送资源分配请 求、中继站 R更新并转发資源分配请求和基站 B根据资源分配请求为多 个移动终端分配资源的系统方法的流程图。下面将参照附图 2和附图 6 , 对本发明的方法进行详述。
首先, 在步骤 S10,中, 移动终端 M生成包含紧急程度信息的资源 分配请求, 该紧急程度信息带有的时间信息为移动终端 M中待传输业务 数据的平均等待时延,即从移动终端 M中待传输的业务数据产生到当次 资源分配请求发出之间的平均时间间隔。
待传输的业务数据包括多批等待时延不同的业务数据, 待传输业务 数据的平均等待时延为该多批业务数据等待时延的算术平均值。 每当有 新的业务数据生成时或者发送完一部分业务数据后, 平均等待时延就进 行更新, 即平均等待时延随着业务数据的变化而进行实时更新。
具体的, 该平均等待时延的计算如图 7所示。 其中, 以某个时间点 作为系统的参考时间零点。 该参考时间零点可以由基站与各个移动终端 同步协定。
在第 n次轮询时,移动终端 M为现有的一个 8个数据包的突发业务 请求资源。 该 8数据包的突发业务的平均生成时间为它们相对于参考时 间零点的生成时间的平均值 50ms。该第 n次轮询时资源分配请求的发送 时间为 130ms,则移动资源 M发送的资源分配请求中的业务数据的平均 等待时延为 130ms-50ms=80ms。
在第 n次轮询后, 基站 B为移动终端 M按上述资源分配请求分配 资源了一定的资源,移动终端 M的 8个数据包中的 4个得以传输。但是, 由于基站 B分配的资源不足, 仍然有 4个数据包没有得到传输。 则该 4 个现有的待传输的数据包的平均生成时间为它们相对于参考时间零点 的生成时间的平均值 60ms。
在第 n+1次轮询时,移动终端 M中又新产生了一个 8个数据包的突 发业务, 资源分配请求重次发送为现有的所有待传输业务请求资源。 该 现有的 12 个数据包的平均生成时间为它们相对于参考时间零点的生成 时间的平均值 133.3ms。 该第 n+1次轮询时资源分配请求的发送时间为 240ms, 则移动资源 M发送的资源分配请求中的业务数据的平均等待时 延为 240ms-133.3ms=106.7ms。
在此, 需要指出的是, 由于在资源分配请求发送前就需要使用发送 时间进行计算, 因此, 计算处理时延时所用的发送时间并非是资源分配 请求发送的实际时间, 而是根据移动终端 M的先验的估计值。在本实施 例中, 该资源分配请求通过可以由类似上述第一实施例中的增强型资源 分配请求头部 (如图 4所示)承载。 其中, 上述增强型资源分配请求头 部中的 6比特的时间信息为表示业务数据的平均等待时延信息。 该等待 时延的单位可以由基站在系统初始化时设置,默认值可以是 10ms,此时 6比特的等待时延信息可以表示最多 630ms的等待时延。
该 6比特的待传输的业务数据的平均等待时延在已公开的 IEEE 802.16d/e标准和 IEEE 802.16j草案中定义的 6种资源分配请求头部中都 是没有的。
然后,在步骤 Sir中,移动终端 M将该资源分配请求发送给中继站
R。
具体的, 该请求的发送机制同第一实施例, 可以采用 IEEE 802.16 中已采用的基于竟争的 CDMA 资源分配请求发送机制, 也可以采用基 于轮询的资源分配请求发送机制。
在本实施例中, 该资源分配请求经中继站 R进行更新并转发至基站
M。
具体地, 首先, 在步骤 S20,中, 中继站 R接收到来自移动终端 M 的含有其中待传输业务数据的平均等待时延的资源分配请求。 该平均等 待时延是至从待传输业务数据从生成至该资源分配请求从移动终端 M 中发出的平均时间间隔。
然后, 在步骤 S21,中, 中继站 R更新该资源分配请求中的平均等待 时延,以体现移动终端 M中的待传输业务数据从生成至该资源分配请求 从中继站中发出的时间间隔。 具体地, 中继站从该资源分配请求里提取 到移动终端 M中待传输业务的在移动终端 M中的平均等待时延, 并将 其与中继站对该资源分配请求的处理时延相加, 将其和作为移动终端 M 中的待传输业务数据新的平均等待时延来更新该资源分配请求。 这里, 中继站 R对该资源分配请求的处理时延是指中继站 R发送更新后的资源 分配请求与中继站 R接收到该资源分配请求的时间间隔。
在此, 需要指出的是, 由于在资源分配请求更新与转发前就需要计 算出中继站 R的处理时延, 因此, 计算处理时延时所用的资源分配请求 转发的时间并非是资源分配请求转发的实际时间, 而是根据中继站 R的 先验的处理时延所作的估计值。
最后, 在步骤 S23,中, 中继站 R将该资源分配请求转发给基站^ 在本实施例中, 基站 B接收到中继站 R转发的移动终端 M的资源 分配请求,根据该资源分配请求获取移动终端 M中待传输业务数据的平 均等待时延, 根据多个移动终端中待传输业务数据的平均等待时延的大 小, 按顺序为该多个移动终端分配资源。
具体的, 在步骤 S30,中, 基站 B接收到来自移动终端 M的含有待. 传输业务数据平均等待时延的资源分配请求。
然后, 在步骤 S31,中, 基站 B根据所接收的来自移动终端 M的资.. 源分配请求,从中提取所述移动终端 M的资源分配请求的带有待传输业 务数据平均等待时延的紧急程度信息,即该资源分配请求到达基站 B时, 移动终端 M中的待传输业务数据的平均等待时延, 称之为基站 B外的 等待时延, 并保存之。
在基站 B接收到来自所辖多个移动终端的资源分配请求后, 在步骤 S32,中, 基站将基于预定规则, 根据各个移动终端中的待传输业务数据 的总等待时延的大小, 来按顺序为多个移动终端分配资源。 例如, 为待 传输的业务数据的总等待时延大的移动终端优先分配资源。 其中, 某个 移动终端的待传输业务的总等待时延为该移动终端发送的资源分配请 求到达基站 B时,该移动终端中的待传输业务数据的基站 B外的等待时 延与该资源分配请求在基站 B中的处理时延之和。 该资源分配请求在基 站 B中处理时延为当前资源分配时间与基站 B接收到该资源分配请求的 时间的时间间隔。 在此, 需要说明的是, 由于承载业务数据的无线电波的传输速率很 处理时延, 业务数据在传输路径上所经过的时间很短, 可以忽略不计。 因此 , 资源分配请求从网络设备发出的时间与该请求到达下一跳网络设 备的时间近似相等。 当然, 为了精确起见, 也可以根据移动终端、 中继 站和基站之间的距离以及承载业务数据的无线电波的属性来计算业务 数据在传输路径上的时延, 并纳入业务数据的平均等待时延中。
以上对本发明的第一实施例和第二实施例进行了详细的描述, 需要 分配请求中, 都包含有截止到当次资源分配请求发送时, 其中所有待传 输业务数据的平均生成时间或者平均等待时延, 即不区分业务数据的批 次。 不同业务类型的业务数据分为不同批次的业务数据; 相同的业务类 型的业务数据也可以分成多个批次, 生成时间差别较小的业务数据构成 同一批次的业务数据。
作为第一、 二实施例的一种变形, 如果资源分配请求只为新到达的 未请求过资源的业务数据请求资源, 而不为那些已经请求过资源的待传:. 输业务数据请求资源, 则平均生成时间只计算这些新到达业务的平均生 成时间。 在一个增强型资源分配请求消息中, 请求的资源的多少和业务 平均生成时间或者平均等待时延是针对同一组待传业务数据的。
第三实施例
作为上述第一实施例的变化例, 在考虑到待传输的业务数据分批次 的情形,对于同一批次的业务数据,在移动终端 M第一次为该批次发送 资源分配请求时, 资源分配请求中所包含的带有时间信息的紧急程度信 息为上述平均生成时间。若该同一批次业务数据在移动终端 M第一次发 送资源分配请求后未能全部发送给基站 B,则移动终端 M为该批次业务 数据中剩下的部分(也可能是该批次的业务数据的全部)重发资源分配 请求, 该重发的资源分配请求中包含有指示重发的信息, 直至该批次的 业务数据发送完毕。然后为下一批次的业务数据进行同样的操作。其中, 指示重发的信息可以利用图 4帧结构中的扩展类型的保留字表示。 同第一实施例, 中继站 R对接收到的资源分配请求不做任何更新处 理, 直接转发给基站8。
基站 B在接收到移动终端 M发送的含有其待传输的业务数据的平 均生成时间的资源分配请求, 即移动终端为某批次的业务数据第一次发 送的资源分配请求后, 基站 B将其中的平均生成时间记录下来; 基站 B 在接收到移动终端 M 为同一批次业务数据的部分或者全部重新发送的 资源分配请求时, 根据重发的资源分配请求中包含有指示重发的信息判 断出该资源分配请求为重发请求后, 可以从记录中查找到该重发请求对 应批次的业务数据的平均生成时间; 基站 B在进行资源分配时, 居该 平均生成时间先后进行资源分配。
在本实施例中, 由于该数据业务的平均生成时间仅由该移动终端 M 第一次向基站 B发送的资源分配请求承载并由基站 B记录。而后在接收 到重发的资源分配请求时,基站 B都将上述记录的该数据业务的平均生 成时间作为同一批次的待传输业务数据的部分或全部的平均生成时间 , 因而对于业务数据部分发送完毕部分剩余的情形, 该实施例只能用于大 概地估计剩余业务数据的平均生成时间。 为了解决该问题, 优选地, 在 同一批次的业务数据部分发送完毕的情形下,移动终端 M重新计算剩下 的部分业务数据的平均生成时间, 并将该平均生成时间放入该批次的业 务数据剩下的部分重发的资源分配请求中,基站 B然后根据该平均生成 时间为剩下的部分业务数据分配资源。
第四实施例
作为上述第二实施例的变化例, 在考虑到待传输的业务数据分批次 的情形,对于同一批次的业务数据,在移动终端 M第一次为该批次发送 资源分配请求时, 资源分配请求中所包含的带有时间信息的紧急程度信 息为该批次待传输业务数据从生成时间到当此资源分配请求发出时间 之间的平均等待时延。若该同一批次业务数据在移动终端 M第一次发送 资源分配请求后未能全部发送给基站 B,则移动终端 M为该批次业务数 据中剩下的部分(也可能是该批次的业务数据的全部)重发资源分配请 求, 该重发的资源分配请求包含有指示重发的信息, 直至该批次的业务 数据发送完毕。 然后为下一批次的业务数据进行同样的操作。
具体的,在本实施例中,若该资源分配请求是移动终端 M首次发送 的, 则中继站 R将处理该首次的资源分配请求的处理时延与该首次的资 源分配请求中的待传输业务数据的等待时延相加得到新的待传输业务 数据的等待时延, 并用该新的待传输业务数据的等待时延更新该首次的 资源分配请求。 而后将该更新过的首次的资源分配请求转发给基站 B。
基站 B根据资源分配请求中重发信息判断资源分配请求是否为首 次发送。 如果资源分配请求是首次发送, 基站 B从该资源分配请求中获 取当该资源分配请求到达基站 B时移动终端 M中待传输的业务数据的 平均等待时延, 称之为基站外等待时延, 并进行保存。
如果资源分配请求不是首次发送,基站 B获取该资源分配请求到达 基站 B的时间与首次发送的资源分配请求到达基站 B的时间的时间差 值, 并将该时间差值与所保存的对应的移动终端中待传输的业务数据的 平均等待时延相加后作为该待传输的业务数据的新的平均等待时延, 即 基站外等待时延。
在基站 B进行资源分配时,基于其所辖的多个移动终端中待传输的 业务数据的基站外等待时延与对应的来自该移动终端的资源分配请求 在基站 B中的处理时延(称之为基站内等待时延)之和的大小, 来按顺 序为其所辖的多个移动终端分配资源。
具体地, 上述基站 B获取重发的资源分配请求到达基站 B的时间 与首次发送的资源分配请求到达基站 B的时间的时间差值的方式至少包 括以下两种方式:
一种方式是基站记录每次接收到由移动终端 M发送的资源分配请 求的时间。此时,则本中继站 R不对该重发的资源分配请求做任何更新, 直接将该重发的资源分配请求转发至基站 B。
另一种方式是在移动终端 M重发的资源分配请求中的紧急程度信 息带有的时间信息为重发的资源分配请求的发送时间与上一次发送的 资源分配请求的发送时间的时间间隔, 或者为重发的资源分配请求的发 R在转发重发的资源分配请求时,将其处理时延加入到上述时间间隔中。 对于重发的资源分配请求消息中的紧急程度信息带有的时间信息 为重发的资源分配请求的发送时间与上一次发送的资源分配请求的发 送时间的时间间隔的情形中,基站 B在每次接收到重发的资源分配请求 后, 将已存的基站外等待时延与重发的资源分配请求中的时间间隔相 加, 并保存相加的结果, 称相加的结果为新的基站外等待时延, 以作为 基站 B处理来自移动终端 M的下一个重发的资源分配请求时的所用的 基站外等待时延。
对于重发的资源分配请求消息中的紧急程度信息带有的时间信息 为重发的资源分配请求的发送时间与首次发送的资源分配请求的发送 时间的时间间隔的情形, 基站 B在每次接收到重发的资源分配请求后, 将已存的基站外等待时延与重发的资源分配请求中的时间间隔相加, 以 作为新的基站外等待时延。
第五实施例
作为上述第二实施例的变化例 , 在考虑到待传输的业务数据分批次 . 的情形,对于同一批次的业务数据,在移动终端 M第一次为该批次发送. 资源分配请求时, 资源分配请求中所包含的带有时间信息的紧急程度信 息为该批次待传输业务数据从生成时间到当此资源分配请求发出时间 之间的平均等待时延。若该同一批次业务数据在移动终端 M第一次发送 资源分配请求后未能全部发送给基站 B,则移动终端 M为该批次业务数 据中剩下的部分(也可能是该批次的业务数据的全部)重发资源分配请 求, 该重发的资源分配请求包含有指示重发的信息, 直至该批次的业务 数据发送完毕。 然后为下一批次的业务数据进行同样的操作。
具体的, 在中继站 R中, 在接收到来自移动终端 M的资源分配请 求, 保存接收到该资源分配请求的时间。
然后, 中继站 R判断该资源分配请求是否为首次发送, 并获取其中 继站外等待时延, 获取过程与判断结果有关。
如果资源分配请求是首次发送,中继站 R从该资源分配请求中获取 当该资源分配请求到达中继站 R时移动终端 M中待传输的业务数据的 平均等待时延, 称之为中继站外等待时延, 并进行保存。
如果资源分配请求不是首次发送, 中继站 R获取该资源分配请求到 达中继站 R的时间与首次发送的资源分配请求到达中继站 R的时间的时 间差值, 并将该时间差值与所保存的对应的移动终端中待传输的业务数 据的平均等待时延相加后作为该待传输的业务数据的新的平均等待时 延, 即中继站外等待时延。
中继站 R将处理该资源分配请求的处理时延与上述获取到的中继站 外等待时延相加,而后将该更新过的重发的资源分配请求转发给基站 B。 三种: 、' " ' 、 一种方式是对于重发的资源分配请求消息中的紧急程度信息带有 的时间信息为重发的资源分配请求的发送时间与上一次发送的资源分 配请求的发送时间的时间间隔的情形中, 中继站 R在每次接收到重发的 资源分配请求后, 将已存的中继站外等待时延与重发的资源分配请求中 的时间间隔相加, 并保存相加的结果, 称相加的结果为新的中继站外等. 待时延, 以作为中继站 R处理来自移动终端 M的下一个重发的资源分 配请求时的所用的中继站外等待时延。
另一种方式是对于重发的资源分配请求消息中的紧急程度信息带 有的时间信息为重发的资源分配请求的发送时间与首次发送的资源分 配请求的发送时间的时间间隔的情形, 中继站 R在每次接收到重发的资 源分配请求后, 将已存的中继站外等待时延与重发的资源分配请求中的 时间间隔相加, 以作为新的中继站外等待时延。
还有一种方式是中继站 R记录每次接收到由移动终端 M发送的资 源分配请求的时间。 将资源分配请求当次到达时间与首次到达时间相 减, 将该差值与已存的中继站外等待时延相加, 以作为新的中继站外等 待时延。
最后, 中继站 R将该更新过的资源分配请求转发给基站 B。
而后基站 B进行的处理与上述第二实施例中完全一样。
在第四和第五实施例中, 由于该数据业务的平均等待时延仅由该移 动终端 M第一次向基站 B或中继站 R发送的资源分配请求承载并由基 站 B或中继站 R记录。 而后在接收到重发的资源分配请求时, 基站 B 或中继站 R都将上述记录的该数据业务的平均等待时延作为同一批次的 待传输业务数据的部分或全部的平均等待时延, 因而对于业务数据部分 发送完毕部分剩余的情形, 剩余业务数据的平均等待时延将发生变化, 该实施例只能用于大概地估计剩余业务数据的平均等待时延。
本领域的普通技术人员可以理解, 如果将重发的资源分配请求中带 有的该重发的资源分配请求从上次发送到本次发送的时间间隔根据剩 余的部分业务数据的等待时延进行一定的修正, 以体现出剩余业务数据 的平均等待时延的变化。
作为对第三至第五实施例中所述的移动终端 M 中的待传输业务数 据分批次的情形的一种扩展, 在某个批次的业务数据中的部分数据(优 选地, 大部分数据)发送完毕后, 移动终端 M可以将该批次剩下的业务 数据合并到下一批业务数据中, 并计算该下一批业务数据的时间信息 (包括平均生成时间或平均等待时延), 然后为该下一批业务数据发送 资源分配请求, 该资源分配请求为首次发送。
对于 WiMAX无线通信系统, 移动终端 M与基站 B之间可能存在 多个连接, 不同的连接可能对应于不同的 QoS信息。 移动终端 M对每 个连接的业务数据分别使用如第一实施例至第五实施例中所述的方法 以分别为每个连接的业务数据请求资源。 此时, 第三至第五实施例中的 同一批次是指同一连接的业务的一次突发数据块, 一次突发数据块是业 务源连续产生的一组数据包。 不同突发数据块生成的时间差别较大。
优选地, 在以上各个实施例中, 各个移动终端所发送的资源分配请 求里带有时间信息的紧急程度信息还包括 QoS信息,所述预定规则包括 根据所述紧急程度信息带有的时间信息并结合所述 QoS 信息来按顺序 为所述多个移动终端进行资源分配的顺序。
例如, 在 WiMAX中, 资源分配请求包括如下 4类: 主动给与服务 ( UGS ), 实时轮询服务(rtPS ), 非实时轮询服务(nrtPS )和尽力而为 服务(BE )。 除了 UGS之外, rtPS, nrtPS和 BE都需要经过带宽请求。 这三种类型的请求具有不同的优先级, rtPS优先级最高, nrtPS 次之, BE优先级最低。 在进行资源分配时, 基站对最高优先级的, 待传输业 务数据总等待时延最大或平均生成时间最早的请求首先进行分配。
以上 5个实施例详述了资源分配请求由移动终端 M发出,经中继站 R转发至基站 B的情形。 本领域的普通技术人员应能理解本发明的不限 于图 2所示的网络拓朴结构。 对于没有中继站的无线通信网络的拓朴结 构, 即资源分配请求由移动终端直接发送给基站, 或者多跳中继无线通 信网络的拓朴结构, 即资源分配请求经由多个中继站发送至基站, 本发 明的方法同样适用。
图 8为移动终端经过两个中继站向基站请求资源的三跳网络拓朴示 意图。在这种情形下, 若移动终端 M在重发情况下不直接提供的业务数 据的总等待时延, 如上述的第四实施例所述, 该总等待时延可以由基站 B进行计算, 也可以如第五实施例所述, 由中继站 R和 R,中的任一个进 行计算。
图 9示出了根据本发明的一个具体实施例在通信网络的移动终端 中请求资源分配的请求装置的结构框图。 该请求装置 10 包括生成装 置 11和第一发送装置 12。
下面将参照附图 2与图 9, 对位于移动终端 M中的请求装置 100用 于向基站 B请求为其分配资源的过程进行详细说明。
首先, 生成装置 11 生成包含紧急程度信息的资源分配请求, 该紧 急程度信息带有时间信息。
然后, 第一发送装置 12将生成的资源分配请求消息发送给中继 站 R。
优选地, 上述时间信息包括移动终端 M 中所有待传输业务数据 的平均生成时间或者平均等待时延。
优选地, 在考虑到待传输的业务数据分批次的情形, 对于同一批次 的业务数据,在移动终端 M第一次为该批次发送资源分配请求时, 资源 分配请求中所包含的带有时间信息的紧急程度信息为上述平均生成时 间。若该同一批次业务数据在移动终端 M第一次发送资源分配请求后未 能全部发送给基站 B ,则移动终端 M为该批次业务数据中剩下的部分(也 可能是该批次的业务数据的全部) 重发资源分配请求, 该重发的资源分 配请求中包含有指示重发的信息, 直至该批次的业务数据发送完毕。 然 后为下一批次的业务数据进行同样的操作。
优选地, 在考虑到待传输的业务数据分批次的情形, 对于同一批次 的业务数据,在移动终端 M第一次为该批次发送资源分配请求时, 资源 分配请求中所包含的带有时间信息的紧急程度信息为该批次待传输业 务数据从生成时间到当此资源分配请求发出时间之间的平均等待时延。 若该同一批次业务数据在移动终端 M 第一次发送资源分配请求后未能 全部发送给基站 B, 则移动终端 M为该批次业务数据中剩下的部分(也 可能是该批次的业务数据的全部) 重发资源分配请求, 该重发的资源分 配请求包含有指示重发的信息, 直至该批次的业务数据发送完毕。 然后 为下一批次的业务数据进行同样的操作。 该重发的资源分配请求中还可 以包含本次资源分配请求发送的时间与上一次或者首次发送的资源分 配请求的发送的时间的时间间隔。
图 10示出了根据本发明的一个具体实施例在通信网絡的中继站 中辅助控制资源分配的辅助控制装置 20的结构框图。 该辅助控制装 置 20包括第二接收装置 21、 更新装置 22和第二发送装置 23。 优选 地, 更新装置 22还可以进一步包括第三判断装置 221、 第六获取装置 222和第七获取装置 223。
这里仍以图 2所示的网络拓朴结构为例,对位于中继站 R中的辅 助控制装置 20用于辅助控制资源分配的过程进行详细说明。
首先, 第二接收装置 21接收来自移动终端 M的资源分配请求, 该资源分配请求中包含有带有时间信息的紧急程度信息。
然后, 更新装置 22根据对该资源分配请求的处理时延, 更新该 资源分配请求。
最后, 在获得更新后的资源分配请求后, 第二发送装置 23将该 请求发送给基站 B。
具体的, 更新装置 202的该更新过程包括三种情形。 下面将分别 对这三种情形进行说明。
情形 1.1 :
情形 1.1基于的前提是,移动终端 M发送的资源分配请求中的紧 急程度信息带有的时间信息是移动终端 M 中待传输业务数据的平均 等待时延, 即从待传输业务数据从生成起到移动终端 M发送该资源 分配请求之间的时间间隔。
此时, 更新装置 22更新该资源分配请求中的平均等待时延, 以体 现移动终端 M 中的待传输业务从生成至该资源分配请求从中继站中发 出的时间间隔。
具体地, 更新装置 22从该资源分配请求里提取到移动终端 M中待 传输业务的在移动终端 M中的平均等待时延,并将其与中继站对该资源 分配请求的处理时延相加,将相加的结果作为移动终端 M中的待传输业 务数据新的平均等待时延来更新该资源分配请求。
情形 1.2
情形 1.2基于的前提是,在考虑到待传输的业务数据分批次的情形, 对于同一批次的业务数据,在移动终端 M第一次为该批次发送资源分配 请求时, 资源分配请求中所包含的带有时间信息的紧急程度信息为该批 均等待时延。该同一批次业务数据在移动终端 M第一次发送资源分配请 求后未能全部发送给基站 B,则移动终端 M为该批次业务数据中剩下的 部分(也可能是该批次的业务数据的全部)重发资源分配请求, 该重发 的资源分配请求包含有指示重发的信息, 直至该批次的业务数据发送完 毕。 然后为下一批次的业务数据进行同样的操作。 该重发的资源分配请 求中还可以包含本次资源分配请求发送的时间与上一次或者首次发送 的资源分配请求的发送的时间的时间间隔。
对于首次发送的资源分配请求, 更新装置 222执行如情形 1.1 中所 述的操作。
对于重发的资源分配请求, 如果该资源分配请求中的紧急程度信息 还包括有本次资源分配请求发送的时间与上一次或者首次发送的资源 分配请求的发送的时间的时间间隔, 更新装置 222从该资源分配请求里 提取上述时间间隔, 并将其与中继站对该资源分配请求的处理时延相 加, 将相加的结果作为新的时间间隔来更新该资源分配请求。
情形 1.3
情形 1.3基于的前提是,在考虑到待传输的业务数据分批次的情形, 对于同一批次的业务数据,在移动终端 M第一次为该批次发送资源分配 请求时, 资源分配请求中所包含的带有时间信息的紧急程度信息为该批 次待传输业务数据从生成时间到当此资源分配请求发出时间之间的平 均等待时延。该同一批次业务数据在移动终端 M第一次发送资源分配请 求后未能全部发送给基站 B,则移动终端 M为该批次业务数据中剩下的 部分(也可能是该批次的业务数据的全部)重发资源分配请求, 该重发 的资源分配请求包含有指示重发的信息, 直至该批次的业务数据发送完 毕。 然后为下一批次的业务数据进行同样的操作。 该重发的资源分配请 求中还可以包含本次资源分配请求发送的时间与上一次或者首次发送 的资源分配请求的发送的时间的时间间隔。
首先, 判断装置 221根据资源分配请求中所包含的重发信息判断 该资源分配请求是否为首次发送。
如果判断装置 221的判断结果为该资源分配请求是移动终端 M首 次发送的, 第六获取装置 222从该资源分配请求中获取当该资源分配请 求到达中继站 R时移动终端 M中待传输的业务数据的平均等待时延, 并进行保存; 并将该平均等待时延与中继站 R对该资源分配请求的处理 时延之和来替代该资源分配请求到达中继站 R时移动终端 M中待传输 的业务数据的平均等待时延, 以获得新的资源分配请求。
如果判断装置 221的判断结果为该资源分配请求不是首次发送,第 七获取装置 223获取该重发的资源分配请求到达中继站 R的时间与首次 资源分配请求到达中继站 R的时间的时间差值, 并将该时间差值与所保 存的对应的移动终端中待传输的业务数据的平均等待时延相加后作为 该待传输的业务数据的到达本中继站时的新的平均等待时延; 并将该新 的平均等待时延与中继站对该资源分配请求的处理时延之和放入到所 述资源分配请求中, 以获得所述新的资源分配请求。
具体地,第七获取装置 223获取该重发的资源分配请求到达中继站 少包括以下三种:
第一种方式适用于重发的资源分配请求消息中的紧急程度信息带 有的时间信息为重发的资源分配请求的发送时间与上一次发送的资源 分配请求的发送时间的时间间隔的情形,该请情形下,第七获取装置 223 在第二接收装置 21 每次接收到重发的资源分配请求后, 将已存的该重
R的时间的时间差值与重发的资源分配请求中的时间间隔相加, 并保存 相加的结果, 称相加的结果为新的该重发的资源分配请求到达中继站 R 的时间与首次资源分配请求到达中继站 R的时间的时间差值, 以作为中 继站 R处理来自移动终端 M的下一个重发的资源分配请求时的所用的 该重发的资源分配请求到达中继站 R的时间与首次资源分配请求到达中 继站 R的时间的时间差值。
另一种方式是对于重发的资源分配请求消息中的紧急程度信息带 配请求的发送时间的时间间隔的情形。 第七获取装置 223在第二接收装 置 21 每次接收到重发的资源分配请求后, 将重发的资源分配请求消息 中的紧急程度信息带有的重发的资源分配请求的发送时间与首次发送 的资源分配请求的发送时间的时间间隔作为该重发的资源分配请求到 达中继站 R的时间与首次资源分配请求到达中继站 R的时间的时间差 值。
还有一种方式是第七获取装置 223记录每次接收到由移动终端 M发 送的资源分配请求的时间。 将当次资源分配请求到达时间与首次到达时 间相减, 以作为新的该重发的资源分配请求到达中继站 R的时间与首次 资源分配请求到达中继站 R的时间的时间差值。
图 11 示出了根据本发明的一个具体实施例在无线通信网络的基 站中用于控制资源分配的控制装置 30的结构框图。 该控制装置 30包 括第一接收装置 31、 第一获取装置 32和资源分配装置 33、 第二获取装 置 34。 其中第一获取装置 32进一步包括第一判断装置 3211、 第三获取 装置 3212和查找装置 3213。 这里为了简明起见, 图 11 中示出了许多 优选实施例中的可选子装置, 本领域技术人员根据本发明的教导, 应 能理解其中仅第一接收装置 31、 第一获取装置 32和资源分配装置 33 是实施本发明所必要的装置, 其他子装置为可选装置。
这里仍以图 2所示的网络拓朴结构为例,对位于基站 B中的控制 装置 30用于控制资源分配的过程进行详细描述。
首先, 第一接收装置 31接收中继站 R转发的来自移动终端 M的 资源分配请求, 该资源分配请求中包含有带有时间信息的紧急程度信 息。
然后, 第一获取装置 32根据所接收的来自移动终端 M的资源分配 请求, 获取移动终端 M 的资源分配请求的带有时间信息的紧急程度信 息。
最后, 资源分配装置 33基于预定规则, 根据来自其所辖的多个移 动终端的多个资源分配请求的带有时间信息的紧急程度信息, 来按顺序' 为其所辖的多个移动终端分配资源。
根据紧急程度信息的具体种类, 以下分四种情形对第一获取装置 32和资源分配装置 33的操作过程进行详细说明。
情形 2.1
首先, 该情形基于的前提是, 移动终端 M发送的资源分配请求 中的紧急程度信息带有的时间信息为移动终端 M 中所有待传输业务 数据的平均生成时间。
第一获取装置 32从该资源分配请求中获取移动终端 M中的待传输 业务数据的平均生成时间。
然后, 资源分配装置 33 根据各个移动终端中的待传输业务数据平 均生成时间的先后, 来为按顺序各个移动终端分配资源。
情形 2.2
首先, 该情形基于的前提是, 移动终端 M发送的资源分配请求 中的紧急程度信息带有的时间信息为移动终端 M 中所有待传输业务 数据的平均等待时延。
第一获取装置 32从该资源分配请求中获取移动终端 M中的待传输 业务数据的平均等待时延, 该平均等待时延为待传输的业务数据从生 成到该资源分配请求到达基站 B的时间间隔。
然后, 资源分配装置 33根据各个移动终端中的待传输业务数据总 等待时延的大小, 来为按顺序各个移动终端分配资源。 其中, 某个移动 终端的待传输业务的总等待时延为第一获取装置 32从该资源分配请求 中获取的待传输业务数据的平均等待时延与该资源分配请求在基站 B 中的处理时延之和。 其中, 第二获取装置 34 获取该资源分配请求在基 站 B中处理时延,该处理时延是指资源分配时间与基站 B接收到该资源 分配请求的时间的时间间隔。
情形 2.3
首先, 该情形基于的前提是, 在考虑到待传输的业务数据分批次的 情形,对于同一批次的业务数据,在移动终端 M第一次为该批次发送资 源分配请求时, 资源分配请求中所包含的带有时间信息的紧急程度信息, 为平均生成时间。若该同一批次业务数据在移动终端 M第一次发送资源 分配请求后未能全部发送给基站 B,则移动终端 M为该批次业务数据中 剩下的部分(也可能是该批次的业务数据的全部)重发资源分配请求, 该重发的资源分配请求中包含有指示重发的信息, 直至该批次的业务数 据发送完毕。 然后为下一扯次的业务数据进行同样的操作。
第一判断装置 3211根据所述重发信息判断所述资源分配请求是否 为首次发送。
如果判断装置 3211 的判断结果为该资源分配请求为首次发送, 第 三获取装置 3212从该资源分配请求中获取移动终端 M中的待传输的业 务数据的平均生成时间, 并进行保存;
如果判断装置 3211的判断结果为该资源分配请求为重发,查找装置 3213查找已保存的与该重发资源分配请求对应的移动终端 M中的待传 输业务数据的平均生成时间。 然后, 资源分配装置 33所进行的操作同情形 2.1。
情形 2.4
首先, 该情形基于的前提是, 在考虑到待传输的业务数据分批次 的情形,对于同一批次的业务数据,在移动终端 Μ第一次为该批次发送 资源分配请求时 , 资源分配请求中所包含的带有时间信息的紧急程度信 息为该批次待传输业务数据从生成时间到当此资源分配请求发出时间 之间的平均等待时延。该同一批次业务数据在移动终端 Μ第一次发送资 源分配请求后未能全部发送给基站 Β,则移动终端 Μ为该批次业务数据 中剩下的部分(也可能是该批次的业务数据的全部)重发资源分配请求, 该重发的资源分配请求包含有指示重发的信息, 直至该批次的业务数据 发送完毕。 然后为下一批次的业务数据进行同样的操作。 该重发的资源 分配请求中还可以包含本次资源分配请求发送的时间与上一次或者首 次发送的资源分配请求的发送的时间的时间间隔。
在该情形下, 作为第一获取装置 32的一个变形, 第一获取装置 32, 的结构框图如图 12所示。 该第一获取装置 32,包括第二判断装置 3221、 第四获取装置 3222和第五获取装置 3223。
首先, 判断装置 3221 根据资源分配请求中所包含的重发信息判 断该资源分配请求是否为首次发送。
如果判断装置 3221 的判断结果为该资源分配请求是移动终端 Μ 首次发送的, 第四获取装置 3222从该资源分配请求中获取当该资源分 配请求到达基站 Β时移动终端 Μ中待传输的业务数据的平均等待时延, 并进行保存。
如果判断装置 3221的判断结果为该资源分配请求是重发的, 第五 获取装置 3223 获取该重发的资源分配请求到达本基站的时间与首次资 源分配请求到达本基站的时间的时间差值, 并将该时间差值与所保存的 对应的移动终端 Μ 中待传输的业务数据的平均等待时延相加后作为该 待传输的业务数据的新的平均等待时延。
具体地, 第五获取装置 3223获取该重发的资源分配请求到达基站 Β的时间与首次资源分配请求到达基站 Β的时间的时间差值的方式至少 包括以下两种:
一种方式是第五获取装置 3223记录每次接收到由移动终端 M发送 的资源分配请求的时间。 此时, 中继站 R不对该重发的资源分配请求做 任何更新, 直接将该重发的资源分配请求转发至基站 B。
另一种方式是在移动终端 M重发的资源分配请求中的紧急程度信 息带有的时间信息为重发的资源分配请求的发送时间与上一次发送的 资源分配请求的发送时间的时间间隔, 或者为重发的资源分配请求的发 送时间与首次发送的资源分配请求的发送时间的时间间隔。 中继站 R在 转发重发的资源分配请求时, 将其处理时延加入到上述时间间隔中。
对于重发的资源分配请求消息中的紧急程度信息带有的时间信息 为重发的资源分配请求的发送时间与上一次发送的资源分配请求的发 送时间的时间间隔的情形中, 第五获取装置 3223 在每次第一接收装置 31接收到重发的资源分配请求后,将已存的基站外等待时延与重发的资 源分配请求中的时间间隔相加, 并保存相加的结果, 称相加的结果为新 的基站外等待时延, 即该重发的资源分配请求到达基站 B的时间与首次 资源分配请求到达基站 B 的时间的时间差值, 并以作为第五获取装置 3223处理来自移动终端 M的下一个重发的资源分配请求时的所用的基 站外等待时延。
对于重发的资源分配请求消息中的紧急程度信息带有的时间信息 为重发的资源分配请求的发送时间与首次发送的资源分配请求的发送 时间的时间间隔的情形, 第五获取装置 3223在每次第一接收装置 31接 收到重发的资源分配请求后, 将已存的基站外等待时延与重发的资源分 配请求中的时间间隔相加, 以作为新的基站外等待时延, 即该重发的资 源分配请求到达基站 B的时间与首次资源分配请求到达基站 B的时间的 时间差值
然后, 资源分配装置 33所进行的操作同情形 2.2。
优选地, 各个移动终端所发送的资源分配请求里带有时间信息的紧 急程度信息还包括 QoS信息,所述预定规则包括根据所述紧急程度信息 带有的时间信息并结合所述 QoS 信息来按顺序为所述多个移动终端进 行资源分配的顺序。
例如, 在 WiMAX中, 资源分配请求包括如下 4类: 主动给与服务 ( UGS ), 实时轮询服务(rtPS ), 非实时轮询服务(nrtPS )和尽力而为 服务(BE )。 除了 UGS之外, rtPS, nrtPS和 BE都需要经过带宽请求。 这三种类型的请求具有不同的优先级, rtPS 优先级最高, nrtPS 次之, BE优先级最低。在进行资源分配时,资源分配装置 33对最高优先级的, 待传输业务数据总等待时延最大或平均生成时间最早的请求首先进行 分配。
需要说明的是, 本领域的普通技术人员应能理解, 移动终端中的待 传输业务数据的总等待时延获取的方式是多种多样的, 不受本说明书中 所列举的方式所限。 另外, 时间信息也不限于上文所述的平均等待时延 或者平均生成时间, 还可能包括其他的形式。 另外需要说明的是, 以上 虽以 WiMAX为例, 对本发明进行了说明, 本领域的普通技术人员应能 理解, 对于其它的无线通信网络, 本发明同样适用。
以上对本发明的具体实施方式进行了描述。 需要理解的是, 本发 明并不局限于上述特定实施方式, 本领域技术人员可以在所附权利要 求的范围内做出各种变形或修改。

Claims

权 利 要 求 书
1. 一种在无线通信网络的基站中用于控制资源分配的方法, 其 特征在于, 包括如下步骤:
1. 接收来自移动终端的资源分配请求;
ii. 根据所接收的来自移动终端的资源分配请求, 获取所述移 动终端的资源分配请求的带有时间信息的紧急程度信息;
其中, 还包括以下步骤:
iii. 基于预定规则, 根据来自多个移动终端的多个资源分配请 求的带有时间信息的紧急程度信息, 来按顺序为所述多个移动终端 分配资源。
2. 根据权利要求 1所述的控制方法, 其特征在于, 所述的资源 分配请求紧急程度信息带有的时间信息包括所述移动终端中待传输 的业务数据的平均生成时间, 所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的平均生成时间 的先后, 来按顺序为所述多个移动终端分配资源。
3. 根据权利要求 1所述的控制方法, 其特征在于, 所述的资源 分配请求中的紧急程度信息带有的时间信息包括所述资源分配请求 到达本基站时,所述移动终端中待传输的业务数据的平均等待时延, 该方法还包括以下步骤:
- 获取所述资源分配请求在本基站中的处理时延;
所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的平均等待时延 与对应的来自该移动终端的资源分配请求在本基站中的处理时延之 和的大小, 来按顺序为所述多个移动终端分配资源。
4. 根据权利要求 2所述的控制方法, 其特征在于, 所述紧急程 度信息还包括所述资源分配请求的重发信息, 其中, 所述步骤 ii还 包括以下步骤: - 根据所述重发信息判断所述资源分配请求是否为首次发送; - 如果所述资源分配请求是首次发送, 则从该资源分配请求中 获取所述移动终端中的待传输的业务数据的平均生成时间, 并进行 保存;
- 如果所述资源分配请求不是首次发送, 则查找已保存的所述 资源分配请求对应的移动终端中的待传输业务数据的平均生成时 间。
5. 根据权利要求 3所述的控制方法, 其特征在于, 所述紧急程 度信息还包括所述资源分配请求的重发信息, 其中, 所述步骤 ii还 包括以下步骤:
- 根据所述重发信息判断所述资源分配请求是否为首次发送;
- 如果所述资源分配请求是首次发送, 从该资源分配请求中获 取当该资源分配请求到达本基站时所述移动终端中待传输的业务数 据的平均等待时延, 并进行保存;
- 如果所述资源分配请求不是首次发送, 获取该资源分配请求 到达本基站的时间与首次发送的资源分配请求到达本基站的时间的 时间差值, 并将该时间差值与所保存的对应的移动终端中待传输的 业务数据的平均等待时延相加后作为该待传输的业务数据的新的平 均等待时延; 所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的新的平均等待 时延与对应的来自该移动终端的资源分配请求在本基站中的处理时 延之和的大小, 来按顺序为所述多个移动终端分配资源。
6. 根据权利要求 2-5中任一项所述的控制方法, 其特征在于, 所述带有时间信息的紧急程度信息还包括 QoS信息, 所述预定规则 包括:
- 根据所述紧急程度信息带有的时间信息并结合所述 QoS信息 来按顺序为所述多个移动终端进行资源分配的顺序。
7. —种在无线通信网络的移动终端中用于请求资源分配的方 法, 其特征在于, 包括如下步骤: - 生成包含紧急程度信息的资源分配请求, 该紧急程度信息带 有时间信息;
- 将所述资源分配请求发起给下一跳网络设备。
8. 根据权利要求 7 所述的请求方法, 其特征在于, 所述时间 信息包括以下任一项:
- 该移动终端中待传输的业务数据的平均生成时间;
- 该移动终端中待传输的业务数据的平均等待时延。
9. 根据权利要求 7 所述的请求方法, 其特征在于, 所述时间 信息包括所述资源分配请求的重发信息, 若所述资源分配请求消息 为首次发送, 所述时间信息还包括以下任一项:
- 该移动终端中待传输的业务数据的平均生成时间;
- 该移动终端中待传输的业务数据的平均等待时延;
若所述资源分配请求消息为重新发送, 所述时间信息包括: - 当前重新发送的资源分配请求消息的发送时间与前一次或者 首次发送的资源分配请求消息的发送时间的时间差值。
10. —种在无线通信网络的中继站中用于辅助控制资源分配的 方法, 其特征在于, 该方法包括如下步驟:
a. 接收来自移动终端的资源分配请求,该资源分配请求中包含 带有时间信息的紧急程度信息;
b. 根据中继站对该资源分配请求的处理时延, 更新所述资源 分配请求中的紧急程度信息的时间信息, 以获得一个更新后的资源 分配请求;
c. 将所述更新后的资源分配请求发送给下一跳网络设备。
11. 根据权利要求 10所述的辅助控制方法, 其特征在于, 所述 的资源分配请求中的紧急程度信息带有的时间信息包括所述资源分 配请求到达本中继站时, 所述移动终端中待传输的业务数据的平均 等待时延,所述紧急程度信息还包括所述资源分配请求的重发信息, 其中, 所述步骤 b还包括以下步骤:
-根据所述重发信息判断所述资源分配请求是否为首次发送; - 如果所述资源分配请求是首次发送, 从该资源分配请求中获 取当该资源分配请求到达本中继站时所述移动终端中待传输的业务 数据的平均等待时延, 并进行保存; 并将该平均等待时延与中继站 对该资源分配请求的处理时延之和来替代该资源分配请求到达本中 继站时所述移动终端中待传输的业务数据的平均等待时延, 以荻得 所述新的资源分配请求;
- 如果所述资源分配请求不是首次发送, 获取该资源分配请求 到达本中继站的时间与首次资源分配请求到达本中继站的时间的时 间差值, 并将该时间差值与所保存的对应的移动终端中待传输的业 务数据的平均等待时延相加后作为该待传输的业务数据的到达本中 继站时的新的平均等待时延; 并将该新的平均等待时延与中继站对 该资源分配请求的处理时延之和放入到所述资源分配请求中, 以获 得所述新的资源分配请求。
12. 一种在无线通信网络的基站中用于控制资源分配的控制装 置, 其特征在于, 包括:
- 第一接收装置, 用于接收来自移动终端的资源分配请求;
- 第一获取装置, 用于根据所接收的来自移动终端的资源分配 请求, 获取所述移动终端的资源分配请求的带有时间信息的紧急程 度信息;
其中, 还包括:
-资源分配装置, 用于基于预定规则, 根据来自多个移动终端 的多个资源分配请求的带有时间信息的紧急程度信息, 来按顺序为 所述多个移动终端分配资源。
13. 根据权利要求 12所述的控制装置, 其特征在于, 所述的资 源分配请求紧急程度信息带有的时间信息包括所述移动终端中待传 输的业务数据的平均生成时间, 所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的平均生成时间 的先后, 来按顺序为所述多个移动终端分配资源。
14. 根据权利要求 12所述的控制装置, 其特征在于, 所述的资 源分配请求中的紧急程度信息带有的时间信息包括所述资源分配请 求到达本基站时, 所述移动终端中待传输的业务数据的平均等待时 延, 所述控制装置还包括:
第二获取装置, 用于获取所述资源分配请求在本基站中的处理 时延;
所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的平均等待时延 与对应的来自该移动终端的资源分配请求在本基站中的处理时延之 和的大小, 来按顺序为所述多个移动终端分配资源。
15. 根据权利要求 13所述的控制装置, 其特征在于, 所述紧急 程度信息还包括所述资源分配请求的重发信息, 其中, 所述第一获 取装置还包括:
第一判断装置, 用于根据所述重发信息判断所述资源分配请求 是否为首次发送;
第三获取装置, 用于如果所述资源分配请求是首次发送, 则从 : 该资源分配请求中获取所述移动终端中的待传输的业务数据的平均 生成时间, 并进行保存;
查找装置, 用于如果所述资源分配请求不是首次发送, 则查找 已保存的所述资源分配请求对应的移动终端中的待传输业务数据的 平均生成时间。
16. 根据权利要求 14所述的控制装置, 其特征在于, 所述紧急 程度信息还包括所述资源分配请求的重发信息, 其中, 所述第一获 取装置还包括:
第二判断装置, 用于才艮据所述重发信息判断所述资源分配请求 是否为首次发送;
第四获取装置, 用于如果所述资源分配请求是首次发送, 从该 资源分配请求中荻取当该资源分配请求到达本基站时所述移动终端 中待传输的业务数据的平均等待时延, 并进行保存;
第五获取装置, 用于如果所述资源分配请求不是首次发送, 获 取该资源分配请求到达本基站的时间与首次资源分配请求到达本基 站的时间的时间差值, 并将该时间差值与所保存的对应的移动终端 中待传输的业务数据的平均等待时延相加后作为该待传输的业务数 据的新的平均等待时延;
所述预定规则包括:
- 基于所述多个移动终端中待传输的业务数据的新的平均等待 时延与对应的来自该移动终端的资源分配请求在本基站中的处理时 延之和的大小, 来按顺序为所述多个移动终端分配资源。
17. 根据权利要求 13至 16中任一项所述的控制装置, 其特征 在于, 所述带有时间信息的紧急程度信息还包括 QoS信息, 所述预 定规则包括:
- 根据所述紧急程度信息带有的时间信息并结合所述 QoS信息 来按顺序为所述多个移动终端进行资源分配的顺序。
18. 一种在无线通信网络的移动终端中用于请求资源分配的请 求装置, 其特征在于, 包括:
生成装置, 用于生成包含紧急程度信息的资源分配请求, 该紧 急程度信息带有时间信息;
第一发送装置, 用于将所述资源分配请求发起给下一跳网络设 备。
19. 根据权利要求 18 所述的请求装置, 其特征在于, 所述时 间信息包括以下任一项:
- 该移动终端中待传输的业务数据的平均生成时间;
- 该移动终端中待传输的业务数据的平均等待时延。
20. 根据权利要求 18 所述的请求装置, 其特征在于, 所述时 间信息包括所述资源分配请求的重发信息, 若所述资源分配请求消 息为首次发送, 所述时间信息还包括以下任一项:
- 该移动终端中待传输的业务数据的平均生成时间;
- 该移动终端中待传输的业务数据的平均等待时延;
若所述资源分配请求消息为重新发送, 所述时间信息包括: - 当前重新发送的资源分配请求消息的发送时间与前一次或者 首次发送的资源分配请求消息的发送时间的时间差值。
21. 一种在无线通信网络的中继站中用于辅助控制资源分配的 辅助控制装置, 其特征在于, 包括:
第二接收装置, 用于接收来自移动终端的资源分配请求, 该资 源分配请求中包含带有时间信息的紧急程度信息;
更新装置, 用于根据中继站对该资源分配请求的处理时延, 更 新所述资源分配请求中的紧急程度信息的时间信息, 以获得一个更 新后的资源分配请求;
第二发送装置, 用于将所述更新后的资源分配请求发送给下一 跳网络设备。
22. 根据权利要求 21所述的辅助控制装置, 其特征在于, 所述 的资源分配请求中的紧急程度信息带有的时间信息包括所述资源分 配请求到达本中继站时, 所述移动终端中待传输的业务数据的平均 等待时延,所述紧急程度信息还包括所述资源分配请求的重发信息,. 其中, 所述第一更新装置还包括:
第三判断装置, 用于根据所述重发信息判断所述资源分配请求 是否为首次发送;
第六获取装置, 用于如果所述资源分配请求是首次发送, 从该 资源分配请求中获取当该资源分配请求到达本中继站时所述移动终 端中待传输的业务数据的平均等待时延, 并进行保存; 并将该平均 等待时延与中继站对该资源分配请求的处理时延之和来替代该资源 分配请求到达本中继站时所述移动终端中待传输的业务数据的平均 等待时延, 以获得所述新的资源分配请求;
第七获取装置, 用于如果所述资源分配请求不是首次发送, 获 取该资源分配请求到达本中继站的时间与首次资源分配请求到达本 中继站的时间的时间差值, 并将该时间差值与所保存的对应的移动 务数据的到达本中继站时的新的平均等待时延; 并将该新的平均等 待时延与中继站对该资源分配请求的处理时延之和放入到所述资源 分配请求中, 以获得所述新的资源分配请求。
23. 一种无线通信网络中的基站, 其特征在于, 包括如权利要 求 12至 17中任一项所述的控制装置。
24. —种无线通信网络中的移动终端, 其特征在于, 包括如权 利要求 18至 20中任一项所述的请求装置。
25. 一种无线通信网络中的中继站, 其特征在于, 包括如权利 要求 21或 22所述的辅助控制装置。
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