CN101677462B - A bandwidth allocation method and device - Google Patents

Abstract

A bandwidth allocation method, specifically comprising: obtaining a bandwidth request of a mobile station; obtaining information on a service connection relationship of the mobile station corresponding to the bandwidth request, where the service connection information of the mobile station indicates that the mobile station has a service connection relationship with the mobile station The mobile station: according to the bandwidth request of the mobile station, and the information of the service connection relationship with the mobile station, allocate bandwidth to the mobile station and the mobile station having the service connection relationship with it. The embodiment of the present invention also provides a bandwidth allocation device, because the device provided by the embodiment of the present invention adopts a one-stop bandwidth allocation strategy, thereby reducing the signaling delay.

Description

A bandwidth allocation method and device

technical field

The present invention relates to the technical field of mobile communication, in particular to a bandwidth allocation method and device.

Background technique

In the existing bandwidth allocation mode, the mobile station requests bandwidth allocation, and if the RS (relay station) or BS (base station) where the mobile station is located has bandwidth, the bandwidth is allocated to the mobile station. For example, there are MS1 (MS, Mobile Station, mobile station) and MS2 within the coverage of the RS, and the data between MS1 and MS2 is forwarded through the RS. When MS1 or MS2 requests bandwidth, the BS or RS allocates bandwidth to the mobile station requesting the bandwidth, but does not allocate bandwidth to other mobile stations that have a service connection relationship with the mobile station.

In the process of realizing the present invention, the inventor found that at least the following problems existed in the prior art:

Because in the prior art, the downlink bandwidth is allocated to the mobile station only when there is data to be transmitted, the signaling delay is relatively large.

Contents of the invention

Embodiments of the present invention provide a bandwidth allocation method and device, thereby improving the efficiency of bandwidth allocation.

A bandwidth allocation method, characterized in that the method comprises:

Obtain the bandwidth request of the mobile station;

Obtain information about a service connection relationship of the mobile station corresponding to the bandwidth request, where the information about the service connection relationship of the mobile station indicates a mobile station that has a service connection relationship with the mobile station;

According to the bandwidth request of the mobile station, the information of the service connection relationship with the mobile station allocates bandwidth for the mobile station and the mobile stations having the service connection relationship with it.

A bandwidth allocation device, characterized in that the device comprises:

The request obtaining module is used to obtain the bandwidth request of the mobile station;

An information acquisition module, configured to obtain information on a service connection relationship of the mobile station corresponding to the bandwidth request, where the information on the service connection relationship of the mobile station indicates a mobile station that has a service connection relationship with the mobile station;

A bandwidth allocation module, configured to assign bandwidth requests to the mobile station and mobile stations that have service connection relationships with it according to the bandwidth request of the mobile station obtained by the request acquisition module and the information on the service connection relationship of the mobile station obtained by the information acquisition module. bandwidth.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that in the embodiments of the present invention, after the mobile station requests bandwidth, the bandwidth allocation device will allocate bandwidth to both the mobile station and the mobile stations that have a service connection relationship with it, In this way, one-stop bandwidth allocation is realized, and signaling delay is reduced.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a processing process provided by Application Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a processing process provided by Application Embodiment 2 of the present invention;

Fig. 4 is a schematic diagram of a processing process provided by the third application embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a device provided by an embodiment of the present invention.

Detailed ways

In the embodiment of the present invention, the bandwidth allocation method may specifically include: acquiring the bandwidth request of the mobile station; the mobile station with which the mobile station has a service connection relationship; according to the bandwidth request of the mobile station, and the information of the service connection relationship with the mobile station, allocate bandwidth to the mobile station and the mobile station with which it has a service connection. Allocating bandwidth to the mobile station and mobile stations having a service connection with it specifically includes allocating uplink bandwidth to the mobile station, and allocating downlink bandwidth to mobile stations having a service connection relationship with the mobile station. Wherein, the service connection relationship specifically refers to the corresponding relationship between the source address and the destination address of the service flow transmitted between the mobile stations. For example, the mobile station requesting bandwidth sends uplink data to other mobile stations, and the uplink The relationship between the source address and the destination address of the data is the service connection relationship of the mobile station, and the service connection relationship information can be specifically represented by a CID (ConnectionIdentifier, connection identifier). The mobile station that has a service connection relationship with the mobile station may be one mobile station or multiple mobile stations.

The apparatus for performing bandwidth allocation in the above embodiments of the present invention may specifically be a relay station or a base station.

When the device for performing bandwidth allocation is a relay station, obtaining the information on the service connection relationship of the mobile station corresponding to the bandwidth request includes: the relay station obtains the information on the service connection relationship of the mobile station from the base station, that is, the relay station sends the information to the base station Request the information of the service connection relationship of the mobile station, the base station returns the information of the service connection relationship of the mobile station according to the information stored by itself, and the relay station receives the information of the service connection relationship of the mobile station returned by the base station; this operation is for the described The operation of allocating bandwidth between the mobile station and the mobile station with which it has a service connection relationship is completed before. Since the relay station not only allocates the uplink bandwidth to the mobile station, but also allocates the downlink bandwidth to the mobile station having service connection with it, therefore, the relay station RS does not need to wait until the downlink data arrives before allocating the downlink bandwidth, and the data transmission processing process can specifically be Yes: If the data transmission between the mobile stations is relayed through the relay station, after the relay station receives the data sent by the mobile station (the data is sent in the form of uplink data), according to the information about the service connection relationship of the mobile station, Use the allocated downlink bandwidth to forward the data to the mobile station that has a service connection with the mobile station; or, if the data transmission between the mobile stations does not need to be relayed by a relay station, the mobile station uses the allocated uplink bandwidth to send For data (the data is sent in the form of uplink data), the mobile station having a service connection with the mobile station receives the data at the allocated downlink bandwidth and demodulates the data.

When the device for performing bandwidth allocation is a base station, the base station itself stores the information on the service connection relationship of the mobile station, therefore, the base station obtains the information on the service connection relationship of the mobile station from itself without obtaining the mobile station Information about the business connection relationship of the station. The operation of obtaining the bandwidth request of the mobile station in the above processing may specifically include: receiving the bandwidth request sent by the mobile station (that is, the mobile station directly sends the bandwidth request to the base station); or, obtaining the bandwidth request of the mobile station forwarded by the relay station (that is, The mobile station sends the bandwidth request to the relay station, and the relay station forwards the bandwidth request to the base station). Since the base station not only allocates the uplink bandwidth to the mobile station, but also allocates the downlink bandwidth to the mobile station with which it has a service connection, the base station BS does not need to wait for the downlink data to arrive before allocating the downlink bandwidth, and the specific data transmission process can be Yes: If the base station obtains the bandwidth request sent by the mobile station, the mobile station uses the allocated uplink bandwidth to send data (the data is transmitted in the form of uplink data), and the mobile station that has a service connection with the mobile station is in the allocated downlink bandwidth. Receive the data at the bandwidth and demodulate the data; if the base station obtains the bandwidth request of the mobile station forwarded by the relay station, the relay station receives the data sent by the mobile station (the data is transmitted in the form of uplink data) , forwarding the data to a mobile station having a service connection with the mobile station by using the allocated downlink bandwidth according to the information of the service connection relationship of the mobile station.

The specific implementation manner of the embodiment of the present invention in the actual application process will be described in detail below.

Application Example 1

In the network architecture shown in Figure 1, there are MS3 and MS4 within the coverage of RS3, and the data communication between MS3 and MS4 is relayed through RS3 instead of BS and core network. MS3 needs to request bandwidth from RS3 before sending data to MS4. When RS3 adopts the centralized scheduling mode, the specific implementation of bandwidth allocation as shown in Figure 2 may include the following operations:

11. MS3 sends an uplink bandwidth request to RS3;

12. RS3 forwards the uplink bandwidth request of MS3 to the BS;

13. According to the bandwidth request of MS3 and the service connection relationship between MS3 and MS4 (such as CID and other information), the BS allocates the uplink bandwidth to MS3 through the UL_MAP message, allocates the downlink bandwidth to MS4 through the DL_MAP, and allocates the bandwidth through RS3 Results are forwarded to MS3 and MS4.

After the bandwidth allocation is completed, MS3 sends data to MS4. The specific process is: MS3 uses the allocated uplink bandwidth to send data to RS3 (the data is sent in the form of uplink data), and after RS3 receives the data, according to MS3 and The service connection relationship of MS4, using the allocated downlink bandwidth to send the data to MS4.

In the first application embodiment of the present invention, if the mobile station that has a service connection relationship with MS3 is not only MS4, but multiple mobile stations, the BS will, according to the bandwidth request of the MS3, and the relationship between MS3 and the multiple mobile stations The service connection relationship allocates uplink bandwidth to MS3, and allocates downlink bandwidth to the multiple mobile stations that have a service connection relationship with MS3.

During the above processing, one-stop bandwidth allocation is realized. However, the downlink bandwidth allocation scheme in the prior art is flow/service rate driven, that is, the downlink bandwidth is allocated only when there is data to be transmitted (that is, the bandwidth is allocated to the mobile station that has a service connection relationship with the mobile station). Compared with the bandwidth allocation scheme in the prior art, the bandwidth allocation scheme provided by the application embodiment 1 of the present invention has the following beneficial effects: since the downlink bandwidth is allocated in advance, there is no need to wait until there is data transmission before the RS forwards the downlink bandwidth request and bandwidth allocation, Therefore, the signaling delay caused by the relay is partially compensated, thereby further reducing the overall system delay.

Application Example 2

In the network architecture shown in Figure 1, there are MS3 and MS4 within the coverage of RS3, and the data communication between MS3 and MS4 is relayed through RS3 instead of BS and core network. MS3 needs to request bandwidth from RS3 before sending data to MS4, when RS3 adopts the distributed scheduling mode, the specific implementation of bandwidth allocation as shown in Figure 3 may include the following operations:

21. MS3 makes an uplink bandwidth request;

22. RS3 allocates uplink bandwidth for MS3 through UL_MAP message and downlink bandwidth for MS4 through DL_MAP message according to the uplink bandwidth request of MS3 and the service connection relationship between MS3 and MS4 (such as CID information, etc.).

After the bandwidth allocation is completed, MS3 sends data to MS4. The specific process is: MS3 uses the allocated uplink bandwidth to send data to RS3 (the data is sent in the form of uplink data), and after RS3 receives the data, according to MS3 and The service connection relationship of MS4 will use the allocated downlink bandwidth to send the data to MS4. Wherein, the service connection relationship between MS3 and MS4 may be specifically notified by the BS to RS3 actively, or RS3 may request the service connection relationship between MS3 and other mobile stations from the BS.

In the second application embodiment of the present invention, if the mobile station that has a service connection relationship with MS3 is not only MS4, but multiple mobile stations, RS3 will according to the bandwidth request of MS3, and the relationship between MS3 and the multiple mobile stations The service connection relationship allocates uplink bandwidth to MS3, and allocates downlink bandwidth to the multiple mobile stations that have a service connection relationship with MS3.

During the above processing, one-stop bandwidth allocation is realized. However, the downlink bandwidth allocation scheme in the prior art is flow/service rate driven, that is, the downlink bandwidth is allocated only when there is data to be transmitted (that is, the bandwidth is allocated to the mobile station that has a service connection relationship with the mobile station). Compared with the bandwidth allocation scheme in the prior art, the bandwidth allocation scheme provided by the application embodiment 2 of the present invention has the following beneficial effects: since the downlink bandwidth is allocated in advance, there is no need to wait until there is data transmission before the RS forwards the downlink bandwidth request and bandwidth allocation, Therefore, the signaling delay caused by the relay is partially compensated, thereby further reducing the overall system delay.

Application Example Three

In the network architecture shown in Figure 1, data communication is directly performed between MS6 and MS7, and control signaling is sent by BS or RS (when MS6 and MS7 are controlled by RS). MS6 needs to request bandwidth to BS or RS before sending data to MS7, and the specific implementation mode of bandwidth allocation as shown in Figure 4 can include the following operations:

31. MS6 makes an uplink bandwidth request;

32. The BS or RS allocates the uplink bandwidth UL_MAP for MS6 and the downlink bandwidth DL_MAP for MS7 according to the uplink bandwidth request of MS6 and the service connection relationship between MS6 and MS7.

In the above 32, if the RS allocates bandwidth for the mobile station, the BS may actively notify the RS of the service connection relationship between MS6 and MS7, or the RS may request the BS for the service connection relationship between MS6 and other mobile stations.

After the bandwidth allocation is completed, MS6 sends data to MS7. The specific process is: MS6 uses the allocated uplink bandwidth to send data to MS7 (the data is sent in the form of uplink data), and MS7 uses the allocated downlink bandwidth to receive the data and decode it. Tune.

In the above process, the bandwidth allocation strategy of the point-to-point mode under the cellular architecture is adopted, while in the prior art, if the communication between MSs adopts the point-to-point mode, the bandwidth allocation strategy is to coordinate bandwidth allocation between MS6 and MS7. Compared with the prior art, the technical solution provided by the application embodiment 3 of the present invention has the following advantages: because centralized control is used for bandwidth allocation, it is more conducive to interference control and resource reuse of the entire network, and is beneficial to coordinated allocation of network resources.

All or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, the steps including the above-mentioned method embodiments are executed; The aforementioned storage medium includes various media capable of storing program codes such as ROM, RAM, magnetic disk or optical disk.

The embodiment of the present invention also provides a device for bandwidth allocation, the implementation structure of which is shown in Figure 5, and the specific implementation structure may include:

The request acquisition module 1 is used to acquire the bandwidth request of the mobile station;

An information acquisition module 2, configured to obtain information on a service connection relationship of the mobile station corresponding to the bandwidth request, where the information on the service connection relationship of the mobile station indicates a mobile station that has a service connection relationship with the mobile station;

The bandwidth allocation module 3 is configured to obtain the bandwidth request of the mobile station obtained by the request obtaining module 1, and the information of the service connection relationship of the mobile station obtained by the information obtaining module 2 is the mobile station and the mobile station that has a service connection with it. Allocating bandwidth to a station specifically includes allocating uplink bandwidth to the mobile station, and allocating downlink bandwidth to mobile stations that have a service connection relationship with the mobile station. The information of the service connection relationship is used to describe the service connection relationship between the mobile station and other mobile stations, and the service connection relationship specifically refers to the relationship between the source address and the destination address of the service flow transmitted between the mobile stations. Corresponding relationship, for example, the mobile station requesting bandwidth sends uplink data to other mobile stations, then the relationship between the source address and destination address of the uplink data is the service connection relationship of the mobile station, and the service connection relationship information can specifically be Represented by CID (Connection Identifier, connection identifier).

The device provided by the above-mentioned embodiments of the present invention may be a relay station. Correspondingly, the information acquisition module 2 is specifically configured to obtain information about the service connection relationship of the mobile station from the base station, that is, request the base station for the service connection relationship of the mobile station The base station returns the information of the service connection relationship of the mobile station according to the information stored by itself, and the information acquisition module 2 receives the information of the service connection relationship of the mobile station returned by the base station. In addition, the device also includes a data processing module 4, configured to receive the data sent by the mobile station after the bandwidth allocation module 2 completes the bandwidth allocation (the mobile station uses the allocated uplink bandwidth to send data in the form of uplink data) ), and according to the information of the service connection relationship of the mobile station, forward the data to the mobile station that has a service connection relationship with the mobile station (the data is forwarded to the mobile station that has a service connection relationship with the mobile station in the form of downlink data The mobile station in the service connection relationship, and the mobile station in the service connection relationship with the mobile station receives the data using the allocated downlink bandwidth).

The device provided by the above-mentioned embodiments of the present invention may also be a base station. Correspondingly, the information acquisition module 2 is specifically configured to acquire the stored information on the service connection relationship of the mobile station from the base station itself; the request acquisition module 1 is used to acquire the mobile station The bandwidth request sent by the station, or obtain the bandwidth request of the mobile station forwarded by the relay station.

Since the device provided by the embodiment of the present invention allocates the downlink bandwidth in advance, the RS does not need to wait until there is data transmission before the RS forwards the downlink bandwidth request and bandwidth allocation, thereby partially compensating for the signaling delay caused by the relay, and further reducing the the overall delay of the system.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. A bandwidth allocation method, characterized in that the method comprises: Obtain the bandwidth request of the mobile station; Obtain information about a service connection relationship of the mobile station corresponding to the bandwidth request, where the information about the service connection relationship of the mobile station indicates a mobile station that has a service connection relationship with the mobile station; Allocating bandwidth to the mobile station and mobile stations having a service connection relationship with it according to the bandwidth request of the mobile station and the information on the service connection relationship with the mobile station; Wherein, after the bandwidth is allocated to the mobile station and the mobile station having a service connection relationship with it, the method further includes: After receiving the data sent by the mobile station, the relay station forwards the data to the mobile station that has a service connection with the mobile station according to the service connection relationship information of the mobile station; Or, the mobile station sends data; a mobile station having a service connection with the mobile station receives the data at the bandwidth allocated to it and demodulates the data. 2. The method according to claim 1, wherein the information of the service connection relationship is a connection identifier (CID). 3. The method according to claim 1 or 2, wherein the obtaining the information of the service connection relationship of the mobile station corresponding to the bandwidth request comprises: the relay station obtains the information of the service connection relationship of the mobile station from the base station information. 4. The method according to claim 1 or 2, wherein the operation of obtaining the bandwidth request of the mobile station comprises: receiving a bandwidth request sent by the mobile station; or, Obtain the bandwidth request of the mobile station forwarded by the relay station. 5. The method according to claim 4, characterized in that, after the base station allocates bandwidth for the mobile station and the mobile station having a service connection relationship with it, the method further comprises: If the base station obtains the bandwidth request sent by the mobile station, the mobile station sends data, and the mobile station having a service connection with the mobile station receives the data at the bandwidth allocated to it and demodulates the data; If the base station obtains the bandwidth request of the mobile station forwarded by the relay station, after receiving the data sent by the mobile station, the relay station forwards the data to the mobile station that has a service connection with the mobile station according to the information about the service connection relationship of the mobile station mobile station. 6. A bandwidth allocation device, characterized in that the device comprises: The request obtaining module is used to obtain the bandwidth request of the mobile station; An information acquisition module, configured to obtain information on a service connection relationship of the mobile station corresponding to the bandwidth request, where the information on the service connection relationship of the mobile station indicates a mobile station that has a service connection relationship with the mobile station; A bandwidth allocation module, configured to assign bandwidth requests to the mobile station and mobile stations that have service connection relationships with it according to the bandwidth request of the mobile station obtained by the request acquisition module and the information on the service connection relationship of the mobile station obtained by the information acquisition module. bandwidth; The device also includes: A data processing module, configured to receive the data sent by the mobile station after the bandwidth allocation is completed by the bandwidth allocation module, and forward the data to the mobile station according to information about the service connection relationship of the mobile station A mobile station with a service connection relationship. 7 . The device according to claim 6 , wherein the device is a relay station, and the information obtaining module is specifically configured to obtain information about the service connection relationship of the mobile station from a base station. 8. The device according to claim 6, wherein the device is a base station, and the request obtaining module is configured to obtain the bandwidth request sent by the mobile station, or obtain the bandwidth request of the mobile station forwarded by the relay station.

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