CN101677462B - Method and device of bandwidth allocation - Google Patents
Method and device of bandwidth allocation Download PDFInfo
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- CN101677462B CN101677462B CN200810222353A CN200810222353A CN101677462B CN 101677462 B CN101677462 B CN 101677462B CN 200810222353 A CN200810222353 A CN 200810222353A CN 200810222353 A CN200810222353 A CN 200810222353A CN 101677462 B CN101677462 B CN 101677462B
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Abstract
The invention discloses a method of bandwidth allocation, comprising the following steps: acquiring a bandwidth request of a mobile station; acquiring information of business connection relation of the mobile station corresponding to the bandwidth request; indicating mobile stations having business connection relation with the mobile station by the business connection information of the mobile station; and allocating bandwidth for the mobile station and the mobile stations having the business connection relation therewith according to the bandwidth request of the mobile station and the information of the business connection relation of the mobile station. The embodiment of the invention provides s device of bandwidth allocation. As a one-stop type bandwidth allocation strategy is adopted in the device provided by the embodiment of the invention, the signaling delay is reduced.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a bandwidth allocation method and apparatus.
Background
The existing bandwidth allocation mode is that a mobile station requests bandwidth allocation, and if an RS (relay station) or a BS (base station) in which the mobile station is located has bandwidth, the mobile station is allocated the bandwidth. For example, there are MS1(MS, Mobile Station) and MS2 in RS coverage, and data between MS1 and MS2 is forwarded through RS. When the MS1 or MS2 requests bandwidth, the BS or RS allocates bandwidth to the mobile station requesting bandwidth, and does not allocate bandwidth to other mobile stations having a traffic connection relationship with the mobile station.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
in the prior art, the downlink bandwidth is allocated to the mobile station only when data needs to be transmitted, so that the signaling delay is large.
Disclosure of Invention
The embodiment of the invention provides a bandwidth allocation method and device, so that the bandwidth allocation efficiency is improved.
A method of bandwidth allocation, the method comprising:
acquiring a bandwidth request of a mobile station;
obtaining information of a service connection relation of the mobile station corresponding to the bandwidth request, wherein the information of the service connection relation of the mobile station indicates the mobile station having the service connection relation with the mobile station;
and allocating the bandwidth to the mobile station and the mobile station with the service connection relation according to the bandwidth request of the mobile station and the information of the service connection relation of the mobile station.
A bandwidth distribution apparatus, the apparatus comprising:
a request acquisition module, configured to acquire a bandwidth request of a mobile station;
an information obtaining module, configured to obtain information of a service connection relationship of a mobile station corresponding to the bandwidth request, where the information of the service connection relationship of the mobile station indicates a mobile station having a service connection relationship with the mobile station;
and the bandwidth allocation module is used for allocating bandwidth to the mobile station and the mobile station with service connection relation according to the bandwidth request of the mobile station acquired by the request acquisition module and the information of the service connection relation of the mobile station acquired by the information acquisition module.
It can be seen from the technical solutions provided in the embodiments of the present invention that, in the embodiments of the present invention, after the mobile station requests the bandwidth, the bandwidth allocation apparatus allocates the bandwidth to both the mobile station and the mobile station having a service connection relationship with the mobile station, thereby implementing one-stop bandwidth allocation and reducing signaling delay.
Drawings
FIG. 1 is a diagram illustrating a network architecture according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a process according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a processing procedure according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a processing procedure provided in a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In this embodiment of the present invention, the bandwidth allocation method may specifically include: acquiring a bandwidth request of a mobile station; obtaining information of a service connection relation of the mobile station corresponding to the bandwidth request, wherein the information of the service connection relation of the mobile station indicates the mobile station having the service connection relation with the mobile station; and allocating the bandwidth for the mobile station and the mobile station with service connection according to the bandwidth request of the mobile station and the information of the service connection relation of the mobile station. Allocating bandwidth to the mobile station and the mobile station having service connection with the mobile station specifically includes allocating uplink bandwidth to the mobile station and allocating downlink bandwidth to the mobile station having service connection with the mobile station. The service connection relationship specifically refers to a correspondence between a source address and a destination address of a service flow transmitted between mobile stations, for example, if the mobile station requesting bandwidth sends uplink data to another mobile station, a relationship between the source address and the destination address of the uplink data is a service connection relationship of the mobile station, and the service connection relationship information may be specifically represented by a CID (connection identifier). The mobile station having a service connection relationship with the mobile station may be one mobile station or a plurality of mobile stations.
The apparatus for performing bandwidth allocation in the foregoing embodiment of the present invention may specifically be a relay station, and may also be a base station.
When the apparatus for performing bandwidth allocation is a relay station, the obtaining information of the service connection relationship of the mobile station corresponding to the bandwidth request includes: the relay station acquires the information of the service connection relation of the mobile station from the base station, namely the relay station requests the information of the service connection relation of the mobile station from the base station, the base station returns the information of the service connection relation of the mobile station according to the information stored by the base station, and the relay station receives the information of the service connection relation of the mobile station returned by the base station; this is done prior to the operation of allocating bandwidth to the mobile station and the mobile stations with which the service connection exists. Because 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 the relay station, the relay station RS does not need to wait until downlink data arrives and then reallocate the downlink bandwidth, and the data transmission processing procedure specifically may be: if the data transmission between the mobile stations is transferred through the relay station, after receiving the data sent by the mobile stations (the data is sent in an uplink data mode), the relay station forwards the data to the mobile stations which are in service connection with the mobile stations by using the allocated downlink bandwidth according to the information of the service connection relation of the mobile stations; or, if data transmission between mobile stations does not need to be relayed through a relay station, the mobile station transmits data by using the allocated uplink bandwidth (the data is transmitted in an uplink data manner), and the mobile station in service connection with the mobile station receives the data at the allocated downlink bandwidth and demodulates the data.
When the apparatus performing bandwidth allocation is a base station, the base station itself holds information of a service connection relationship of a mobile station, and therefore, the base station obtains the information of the service connection relationship of the mobile station from itself without obtaining the information of the service connection relationship of the mobile station from the outside. The operation of acquiring the bandwidth request of the mobile station in the processing procedure may specifically include: receiving a bandwidth request sent by a mobile station (namely, the mobile station directly sends the bandwidth request to a base station); or, the bandwidth request of the mobile station forwarded by the relay station is acquired (i.e. 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 having service connection with the base station, the base station BS does not need to wait for the downlink data to arrive and then reallocate the downlink bandwidth, and the specific data transmission processing procedure may be: if the base station acquires a bandwidth request sent by the mobile station, the mobile station sends data by using the allocated uplink bandwidth (the data is transmitted in an uplink data mode), and the mobile station which is in service connection with the mobile station receives the data at the allocated downlink bandwidth and demodulates 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 an uplink data mode), and forwards the data to the mobile station which is in service connection with the mobile station by using the allocated downlink bandwidth according to the information of the service connection relation of the mobile station.
The following is a detailed description of specific implementations of embodiments of the present invention in a practical application.
Application embodiment 1
In the network architecture shown in fig. 1, there are MS3 and MS4 in the coverage of RS3, and data communication between MS3 and MS4 is relayed through RS3 without passing through the BS and the core network. The MS3 needs to request bandwidth from RS3 before transmitting data to MS4, and when RS3 adopts the centralized scheduling mode, the specific implementation of bandwidth allocation as shown in fig. 2 may include the following operations:
11. the MS3 sends an uplink bandwidth request to the RS 3;
12. the RS3 forwards the uplink bandwidth request of the MS3 to the BS;
13. the BS allocates uplink bandwidth to MS3 through UL _ MAP message according to the bandwidth request of MS3 and the service connection relationship (e.g. CID, etc.) between MS3 and MS4, allocates downlink bandwidth to MS4 through DL _ MAP, and forwards the bandwidth allocation result to MS3 and MS4 through RS 3.
After completing bandwidth allocation, the MS3 sends data to the MS4, and the specific processing procedure is as follows: the MS3 transmits data to the RS3 by using the allocated uplink bandwidth (the data is transmitted in the form of uplink data), and after receiving the data, the RS3 transmits the data to the MS4 by using the allocated downlink bandwidth according to the service connection relationship between the MS3 and the MS 4.
In a first embodiment of the present invention, if the MS having a service connection relationship with the MS3 is not only the MS4 but also multiple mobile stations, the BS allocates an uplink bandwidth to the MS3 according to the bandwidth request of the MS3 and the service connection relationship between the MS3 and the multiple mobile stations, and allocates downlink bandwidths to the multiple mobile stations having a service connection relationship with the MS3, respectively.
In the above processing procedure, 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 data needs to be transmitted (that is, the bandwidth is allocated to the mobile station having 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 first application embodiment of the invention has the following beneficial effects: because the downlink bandwidth is allocated in advance, the RS does not need to forward the downlink bandwidth request and allocate the bandwidth until data transmission exists, the signaling delay caused by the relay is partially compensated, and the overall delay of the system is further reduced.
Application example two
In the network architecture shown in fig. 1, there are MS3 and MS4 in the coverage of RS3, and data communication between MS3 and MS4 is relayed through RS3 without passing through the BS and the core network. The MS3 needs to request bandwidth from RS3 before transmitting data to MS4, and when RS3 adopts the distributed scheduling mode, the specific implementation of bandwidth allocation as shown in fig. 3 may include the following operations:
21. the MS3 makes an uplink bandwidth request;
22. RS3 allocates uplink bandwidth to MS3 through UL _ MAP message and allocates downlink bandwidth to MS4 through DL _ MAP message according to the uplink bandwidth request of MS3 and the service connection relationship (e.g. CID information) between MS3 and MS 4.
After completing bandwidth allocation, the MS3 sends data to the MS4, and the specific processing procedure is as follows: the MS3 transmits data to the RS3 by using the allocated uplink bandwidth (the data is transmitted in the form of uplink data), and after receiving the data, the RS3 transmits the data to the MS4 by using the allocated downlink bandwidth according to the service connection relationship between the MS3 and the MS 4. The service connection relationship between the MS3 and the MS4 may be specifically notified to the RS3 by the BS, or requested by the RS3 to the BS for the service connection relationship between the MS3 and another mobile station.
In the second embodiment of the present invention, if the MS having a service connection relationship with the MS3 is not only the MS4 but also multiple mobile stations, the RS3 allocates the uplink bandwidth to the MS3 according to the bandwidth request of the MS3 and the service connection relationship between the MS3 and the multiple mobile stations, and allocates the downlink bandwidth to the multiple mobile stations having a service connection relationship with the MS 3.
In the above processing procedure, 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 data needs to be transmitted (that is, the bandwidth is allocated to the mobile station having 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 second application embodiment of the invention has the following beneficial effects: because the downlink bandwidth is allocated in advance, the RS does not need to forward the downlink bandwidth request and allocate the bandwidth until data transmission exists, the signaling delay caused by the relay is partially compensated, and the overall delay of the system is further reduced.
Application example three
In the network architecture shown in fig. 1, data communication is directly between MS6 and MS7, and control signaling is sent by the BS or RS (when MS6 and MS7 are controlled by the RS). The MS6 needs to request bandwidth from the BS or RS before transmitting data to the MS7, and a specific implementation of the bandwidth allocation shown in fig. 4 may include the following operations:
31. the MS6 makes an uplink bandwidth request;
32. and the BS or the RS allocates an uplink bandwidth UL _ MAP for the MS6 and allocates a downlink bandwidth DL _ MAP for the MS7 according to the uplink bandwidth request of the MS6 and the service connection relation between the MS6 and the MS 7.
In the above 32, if the RS allocates the bandwidth to the mobile station, the BS may actively notify the RS of the service connection relationship between the MS6 and the MS7, or the RS requests the BS for the service connection relationship between the MS6 and another mobile station.
After completing bandwidth allocation, the MS6 sends data to the MS7, and the specific processing procedure is as follows: the MS6 transmits data to the MS7 using the allocated uplink bandwidth (the data is transmitted as uplink data), and the MS7 receives the data using the allocated downlink bandwidth and demodulates the data.
In the above process, a bandwidth allocation strategy in a peer-to-peer mode in a cellular architecture is adopted, whereas in the prior art, if the MSs use peer-to-peer mode for communication, the bandwidth allocation strategy is to coordinate bandwidth allocation between the MS6 and the MS 7. Compared with the prior art, the technical scheme provided by the third application embodiment of the invention has the following advantages: because the centralized control is adopted to carry out bandwidth allocation, the method is more favorable for interference control and resource reuse of the whole network and is favorable for coordination allocation of network resources.
All or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
An embodiment of the present invention further provides a bandwidth allocation apparatus, and an implementation structure of the apparatus is shown in fig. 5, where the implementation structure may include:
a request acquiring module 1, configured to acquire a bandwidth request of a mobile station;
an information obtaining module 2, configured to obtain information of a service connection relationship of the mobile station corresponding to the bandwidth request, where the information of the service connection relationship of the mobile station indicates a mobile station having a service connection relationship with the mobile station;
a bandwidth allocating module 3, configured to allocate bandwidths to the mobile station and the mobile station in service connection with the mobile station according to the bandwidth request of the mobile station acquired by the request acquiring module 1 and the information of the service connection relationship of the mobile station acquired by the information acquiring module 2, specifically including allocating an uplink bandwidth to the mobile station and allocating a downlink bandwidth to the mobile station in service connection with the mobile station. The information of the service Connection relationship is used to describe a service Connection relationship between the mobile station and another mobile station, where the service Connection relationship specifically refers to a corresponding relationship between a source address and a destination address of a service flow transmitted between the mobile stations, for example, if the mobile station requesting bandwidth transmits uplink data to another mobile station, a relationship between the source address and the destination address of the uplink data is a service Connection relationship of the mobile station, and the service Connection relationship information may be specifically represented by a CID (Connection Identifier).
The apparatus provided in the foregoing embodiment of the present invention may be a relay station, and correspondingly, the information obtaining module 2 is specifically configured to obtain, from a base station, information of a service connection relationship of the mobile station, that is, to request the base station for 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 information stored in the base station, and the information obtaining module 2 receives the information of the service connection relationship of the mobile station returned by the base station. In addition, the apparatus further includes a data processing module 4, configured to receive data sent by the mobile station after the bandwidth allocation module 2 completes bandwidth allocation (the mobile station sends data in an uplink data manner by using the allocated uplink bandwidth), and forward the data to the mobile station having a service connection relationship with the mobile station according to the information of the service connection relationship of the mobile station (the data is forwarded to the mobile station having a service connection relationship with the mobile station in a downlink data manner, and the mobile station having a service connection relationship with the mobile station receives the data by using the allocated downlink bandwidth).
The apparatus provided in the foregoing embodiment of the present invention may also be a base station, and correspondingly, the information obtaining module 2 is specifically configured to obtain, from the base station itself, stored information of the service connection relationship of the mobile station; the request obtaining module 1 is configured to obtain a bandwidth request sent by a mobile station, or obtain a bandwidth request of the mobile station forwarded by a relay station.
The device provided by the embodiment of the invention allocates the downlink bandwidth in advance, and does not need to forward the downlink bandwidth request and allocate the bandwidth by the RS when data transmission exists, so that the signaling delay caused by relay is partially compensated, and the overall delay of the system is further reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A method of bandwidth allocation, the method comprising:
acquiring a bandwidth request of a mobile station;
obtaining information of a service connection relation of the mobile station corresponding to the bandwidth request, wherein the information of the service connection relation of the mobile station indicates the mobile station having the service connection relation with the mobile station;
according to the bandwidth request of the mobile station and the information of the service connection relation of the mobile station, allocating bandwidth for the mobile station and the mobile station with the service connection relation;
after allocating the bandwidth to the mobile station and the mobile station having a service connection relationship with the mobile station, the method further includes:
after receiving the data sent by the mobile station, the relay station forwards the data to the mobile station with service connection with the mobile station according to the information of the service connection relation of the mobile station;
or, the mobile station transmits data; a mobile station having a service connection with the mobile station receives the data and demodulates the data at its allocated bandwidth.
2. The method of claim 1, wherein the information about the service connection relationship is a connection identifier CID.
3. The method according to claim 1 or 2, wherein the obtaining information of the service connection relationship of the mobile station corresponding to the bandwidth request comprises: and the relay station acquires the information of the service connection relation of the mobile station from the base station.
4. The method of claim 1 or 2, wherein the operation of obtaining a bandwidth request of a mobile station comprises:
receiving a bandwidth request sent by a mobile station; or,
and acquiring the bandwidth request of the mobile station forwarded by the relay station.
5. The method of claim 4, wherein after the base station allocates the bandwidth for the mobile station and the mobile station having a service connection relationship with the mobile station, the method further comprises:
if the base station acquires a bandwidth request sent by a mobile station, the mobile station sends data, and the mobile station which is in service connection with the mobile station receives the data at the bandwidth allocated to the mobile station and demodulates the data;
if the base station obtains the bandwidth request of the mobile station forwarded by the relay station, the relay station forwards the data to the mobile station with service connection with the mobile station according to the information of the service connection relation of the mobile station after receiving the data sent by the mobile station.
6. A bandwidth distribution apparatus, the apparatus comprising:
a request acquisition module, configured to acquire a bandwidth request of a mobile station;
an information obtaining module, configured to obtain information of a service connection relationship of a mobile station corresponding to the bandwidth request, where the information of the service connection relationship of the mobile station indicates a mobile station having a service connection relationship with the mobile station;
a bandwidth allocation module, configured to allocate bandwidth to the mobile station and the mobile station having a service connection relationship with the mobile station according to the bandwidth request of the mobile station acquired by the request acquisition module and the information of the service connection relationship of the mobile station acquired by the information acquisition module;
the device further comprises:
and the data processing module is used for receiving the data sent by the mobile station after the bandwidth allocation module completes the bandwidth allocation, and forwarding the data to the mobile station with the service connection relation with the mobile station according to the information of the service connection relation of the mobile station.
7. The apparatus according to claim 6, wherein the apparatus is a relay station, and the information obtaining module is specifically configured to obtain the information of the service connection relationship of the mobile station from a base station.
8. The apparatus of claim 6, wherein the apparatus is a base station, and the request obtaining module is configured to obtain a bandwidth request sent by a mobile station or obtain a bandwidth request of the mobile station forwarded by a relay station.
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| CN200810222353A CN101677462B (en) | 2008-09-17 | 2008-09-17 | Method and device of bandwidth allocation |
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| CN200810222353A CN101677462B (en) | 2008-09-17 | 2008-09-17 | Method and device of bandwidth allocation |
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| CN101677462B true CN101677462B (en) | 2012-10-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620036A (en) * | 2003-11-20 | 2005-05-25 | 华为技术有限公司 | Method of distributing ABIS interface band width resource |
| CN1941666A (en) * | 2005-09-30 | 2007-04-04 | 华为技术有限公司 | Method and system for realizing bandwith distribution and dispatch management |
| CN1949728A (en) * | 2005-10-13 | 2007-04-18 | 华为技术有限公司 | Method for initiating capacity confering requesting in terminal access |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620036A (en) * | 2003-11-20 | 2005-05-25 | 华为技术有限公司 | Method of distributing ABIS interface band width resource |
| CN1941666A (en) * | 2005-09-30 | 2007-04-04 | 华为技术有限公司 | Method and system for realizing bandwith distribution and dispatch management |
| CN1949728A (en) * | 2005-10-13 | 2007-04-18 | 华为技术有限公司 | Method for initiating capacity confering requesting in terminal access |
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