CN101159985B - Overload control method and device for control channel of wireless communication system - Google Patents
Overload control method and device for control channel of wireless communication system Download PDFInfo
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- CN101159985B CN101159985B CN2007101767152A CN200710176715A CN101159985B CN 101159985 B CN101159985 B CN 101159985B CN 2007101767152 A CN2007101767152 A CN 2007101767152A CN 200710176715 A CN200710176715 A CN 200710176715A CN 101159985 B CN101159985 B CN 101159985B
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Abstract
The invention discloses an overload control method and a device of controlling channel in a wireless communication system, which is used in overload control for sector message. The method includes: an overload judgment processing step, in which prior cell control channel judges whether the overall length of the sector message exceeds maximum message length borne by the control channel; if exceed,select common-frequency neighboring cell configuration message to construct a first forward queue in the sector message, according to common-frequency neighboring cell configuration message priority principle and send out the sector message according to the first forward queue. The invention realizes reasonable control and selection for the sector message according to certain overload control algorithm, when the sector message to be sent by AN on the control channel exceeds the control channel bearing capability, and AT can acquire the sector configuration message of the prior cell AN as muchas possible.
Description
Technical field
The present invention relates to wireless communication system, particularly relate to the overload controlling method and the device thereof of control channel in a kind of wireless communication system.
Background technology
CDMA2000 1X EVDO technology is a branch of CDMA2000 standard series, provides support for the high speed wireless data business specially.Can with the common networking of CDMA2000 1X network that speech business and low-speed data service are provided, use the bandwidth under the different frequent points.Wherein CDMA is (CodeDivision Multiple Access) code division multiple access, and EVDO is (Evolution Data Only/EvolutionData Optimized, the data, services of evolution, optimization).
CDMA2000 1X EVDO forward channel adopts time division way, and all users share the forward direction time slot of this sector in the sector.Wherein control channel is the common signal channel of all users in the sector, the control channel in a sector.Two kinds of important messages of control channel carrying:
1) a kind of is Overhead Message, and accessing terminal, (Access Terminate AT) is known access network (Access Network, basic configuration information AN) by Overhead Message;
2) a kind of is user-dependent service messages such as beep-page message, traffic-channel assignment message.
Overhead Message comprises synchronization message, quick configuration messages, inserts message, sector message, reverse rate restriction of message and broadcast overhead messages, and these Overhead Messages are to go out every certain synchronization control channel cycle timed sending.
The sector message content comprises this cell configuration message, homogeneous-frequency adjacent-domain configuration messages and alien frequencies neighbor cell configuration message.The length of sector message increases very fast with the neighbor cell configuration message of current area, because the forward direction time slot of control channel is limited, can cause like this to send long sector message.Processing mode one according to present system is to abandon this sector message, and can cause can't upgrade in time the information of base station access network AN of access terminal AT like this; Mode two is not selected, and can send length according to maximum, discards the message that can not send, and the problem of this processing mode is that important homogeneous-frequency adjacent-domain configuration messages may be dropped, and has sent the lower alien frequencies neighbor cell configuration message of importance.
Summary of the invention
Technical problem to be solved by this invention is to provide the overload controlling method and the device thereof of control channel in a kind of wireless communication system, be used to realize when sector message that access network AN needs to send on control channel surpasses the bearing capacity of control channel, sector message is rationally controlled and selected, make the access terminal AT sector configuration information of knowing current area access network AN as much as possible.
To achieve these goals, the invention provides the overload controlling method of control channel in a kind of wireless communication system, be used for sector message is transshipped control, it is characterized in that, comprising:
The overload judgment processing steps, judge by the control channel of current area whether message total length in sector surpasses the maximum message length that described control channel can carry, if surpass, then from the message of described sector, select the homogeneous-frequency adjacent-domain configuration messages to construct first transmit queue, and described sector message is sent according to described first transmit queue according to homogeneous-frequency adjacent-domain configuration messages priority principle.
The overload controlling method of control channel in the described wireless communication system wherein, before described overload judgment processing steps, further comprises: the step of being carried out system initialization by described wireless communication system.
The overload controlling method of control channel in the described wireless communication system, wherein, before described overload judgment processing steps, further comprise: when described current area being increased or delete neighbor cell configuration message, notify described current area to upgrade the step of the neighbor cell configuration message of sector by described wireless communication system, described neighbor cell configuration message comprises described homogeneous-frequency adjacent-domain configuration messages, described alien frequencies neighbor cell configuration message.
The overload controlling method of control channel in the described wireless communication system, wherein, in the described overload judgment processing steps, the maximum message length that described control channel can carry is determined according to the rate configuration of described control channel.
The overload controlling method of control channel in the described wireless communication system, wherein, in the described overload judgment processing steps, further comprise: when message total length in described sector surpasses the maximum message length that described control channel can carry, abandon step because of the alien frequencies neighbor cell configuration message that can't send above length.
The overload controlling method of control channel in the described wireless communication system wherein, in the described overload judgment processing steps, describedly specifically comprises the step that described sector message sends according to described first transmit queue:
According to described first transmit queue described sector message is broadcast to the step that accesses terminal in the described wireless communication system by airlink.
The overload controlling method of control channel in the described wireless communication system, wherein, in the described overload judgment processing steps, further comprise: when message total length in described sector surpasses the maximum message length that described control channel can carry, directly according to described sector message constructing second transmit queue, and the step that described sector message is sent according to described second transmit queue.
The overload controlling method of control channel in the described wireless communication system wherein, in the described overload judgment processing steps, describedly specifically comprises the step that described sector message sends according to described second transmit queue:
According to described second transmit queue described sector message is broadcast to the step that accesses terminal in the described wireless communication system by airlink.
To achieve these goals, the present invention also provides the overloading control device of control channel in a kind of wireless communication system, is used for sector message is transshipped control, it is characterized in that this device comprises:
The overload judge module is used for judging by the control channel of current area whether message total length in sector surpasses the maximum message length that control channel can carry;
The overload processing module, connect described overload judge module, be used for when message total length in described sector surpasses the maximum message length that described control channel can carry, from the message of described sector, selecting the homogeneous-frequency adjacent-domain configuration messages to construct first transmit queue according to homogeneous-frequency adjacent-domain configuration messages priority principle; And
Message transmission module connects described overload processing module, is used for according to described first transmit queue described sector message being sent.
The overloading control device of control channel in the described wireless communication system, wherein, when message total length in described sector surpasses the maximum message length that described control channel can carry, described overload processing module is directly according to described sector message constructing second transmit queue, and described sector message sent according to described second transmit queue by described message transmission module.
The resource of the forward control channel of the present invention by effectively utilizing EVDO, realized when access network AN needs the sector message that sends to surpass the control channel bearing capacity on control channel, can rationally control sector message and select according to certain overload control algolithm, thereby make access terminal AT can as much as possiblely know the sector configuration information of current area access network AN.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the overload controlling method flow chart of sector of the present invention message;
Fig. 2 is the overloading control device structure chart of sector of the present invention message.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is made further more detailed description.
As shown in Figure 1, be the overload controlling method flow chart of sector of the present invention message.In Fig. 1, wireless communication system is realized the overload control to sector message by neighbor cell configuration message is filtered selection.In the practical application, because the adjacent sub-district frequently and the co-frequency cell of complicated wireless communication system list cell configuration may be a lot, even surpass the ability that the control channel packing can carry, so be necessary to transship and control and preferentially select important homogeneous-frequency adjacent-domain message to send.
This overload controlling method is a kind of overload controlling method of preferentially selecting the sector message of homogeneous-frequency adjacent-domain configuration messages from the message of sector, runs on access network AN, the corresponding control algolithm copy of sector control channel.Particularly, when the maximum that surpasses control channel when the total length of sector message can send length, the homogeneous-frequency adjacent-domain configuration messages that is comprised from sector message, preferential selection homogeneous-frequency adjacent-domain configuration messages as much as possible sends in the alien frequencies neighbor cell configuration message, selects alien frequencies neighbor cell configuration message to send and then.Make access terminal AT know the homogeneous-frequency adjacent-domain situation of current area access network AN as much as possible like this, be beneficial to switch.
Step 101, CDMA 1X EVDO communication system is carried out system initialization;
Step 102, the active user increases the sub-district or deletes neighbor cell configuration message when operation, and the notifications respective cell is upgraded the neighbor cell configuration information of sector;
In this step, neighbor cell configuration message comprises with frequency configuration messages, alien frequencies configuration messages;
In this step, the maximum message length that control channel can carry is different because of the rate configuration of control channel.
Step 104, if sector message is not transshipped, then structure enters and waits for constantly directly according to the transmit queue of message constructing sector, sector message, after the wait delivery time arrives, according to transmit queue sector message is sent to airlink;
Step 105, if sector message overload, then from the message of sector, select the homogeneous-frequency adjacent-domain configuration messages according to homogeneous-frequency adjacent-domain configuration messages priority principle, the transmit queue of structure sector message, and abandon because of surpassing the alien frequencies neighbor cell configuration message that length can't send, constructed transmit queue after, enter wait state, after waiting for that delivery time arrives, sector message is broadcast to access terminal AT by airlink according to transmit queue; And
As shown in Figure 2, be the overloading control device structure chart of sector of the present invention message.This device 200 comprises access terminal AT 24, also comprises:
Wherein, the maximum message length that can carry of control channel is determined according to the rate configuration of control channel.
The overload controlling method of the control channel that the present invention proposes also is specially adapted in the wireless telecommunication system of time division way, and all users share the scene of down-chain resource in the group by the forward direction time-derived channel.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the overload controlling method of control channel in the wireless communication system is used for sector message is transshipped control, it is characterized in that, comprising:
The overload judgment processing steps, judge by the control channel of current area whether message total length in sector surpasses the maximum message length that described control channel can carry, if surpass, then from the message of described sector, select the homogeneous-frequency adjacent-domain configuration messages to construct first transmit queue, and described sector message is sent according to described first transmit queue according to homogeneous-frequency adjacent-domain configuration messages priority principle.
2. the overload controlling method of control channel is characterized in that in the wireless communication system according to claim 1, before described overload judgment processing steps, further comprises: the step of being carried out system initialization by described wireless communication system.
3. the overload controlling method of control channel in the wireless communication system according to claim 2, it is characterized in that, before described overload judgment processing steps, further comprise: when described current area being increased or delete neighbor cell configuration message, notify described current area to upgrade the step of the neighbor cell configuration message of sector by described wireless communication system, described neighbor cell configuration message comprises described homogeneous-frequency adjacent-domain configuration messages, alien frequencies neighbor cell configuration message.
4. according to the overload controlling method of control channel in claim 1, the 2 or 3 described wireless communication systems, it is characterized in that, in the described overload judgment processing steps, the maximum message length that described control channel can carry is determined according to the rate configuration of described control channel.
5. according to the overload controlling method of control channel in claim 1, the 2 or 3 described wireless communication systems, it is characterized in that, in the described overload judgment processing steps, further comprise: when message total length in described sector surpasses the maximum message length that described control channel can carry, abandon step because of the alien frequencies neighbor cell configuration message that can't send above length.
6. according to the overload controlling method of control channel in claim 1, the 2 or 3 described wireless communication systems, it is characterized in that, in the described overload judgment processing steps, describedly the step that described sector message sends is specifically comprised according to described first transmit queue:
According to described first transmit queue described sector message is broadcast to the step that accesses terminal in the described wireless communication system by airlink.
7. according to the overload controlling method of control channel in claim 1, the 2 or 3 described wireless communication systems, it is characterized in that, in the described overload judgment processing steps, further comprise: when message total length in described sector surpasses the maximum message length that described control channel can carry, directly according to described sector message constructing second transmit queue, and the step that described sector message is sent according to described second transmit queue.
8. the overload controlling method of control channel is characterized in that in the wireless communication system according to claim 7, in the described overload judgment processing steps, describedly according to described second transmit queue step that described sector message sends is specifically comprised:
According to described second transmit queue described sector message is broadcast to the step that accesses terminal in the described wireless communication system by airlink.
9. the overloading control device of control channel in the wireless communication system is used for sector message is transshipped control, it is characterized in that this device comprises:
The overload judge module is used for judging by the control channel of current area whether message total length in sector surpasses the maximum message length that control channel can carry;
The overload processing module, connect described overload judge module, be used for when message total length in described sector surpasses the maximum message length that described control channel can carry, from the message of described sector, selecting the homogeneous-frequency adjacent-domain configuration messages to construct first transmit queue according to homogeneous-frequency adjacent-domain configuration messages priority principle; And
Message transmission module connects described overload processing module, is used for according to described first transmit queue described sector message being sent.
10. the overloading control device of control channel in the wireless communication system according to claim 9, it is characterized in that, when message total length in described sector surpasses the maximum message length that described control channel can carry, described overload processing module is directly according to described sector message constructing second transmit queue, and described sector message sent according to described second transmit queue by described message transmission module.
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| CN2007101767152A CN101159985B (en) | 2007-11-01 | 2007-11-01 | Overload control method and device for control channel of wireless communication system |
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| CN2007101767152A CN101159985B (en) | 2007-11-01 | 2007-11-01 | Overload control method and device for control channel of wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774126A (en) * | 2004-11-08 | 2006-05-17 | 华为技术有限公司 | Method for selecting non-common frequency measurement neighbouring region to make measurement |
| CN1863406A (en) * | 2006-04-17 | 2006-11-15 | 华为技术有限公司 | System and method for processing missed configuration neighborhood in wireless access network |
| CN101022589A (en) * | 2007-03-07 | 2007-08-22 | 华为技术有限公司 | System message cutting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1774126A (en) * | 2004-11-08 | 2006-05-17 | 华为技术有限公司 | Method for selecting non-common frequency measurement neighbouring region to make measurement |
| CN1863406A (en) * | 2006-04-17 | 2006-11-15 | 华为技术有限公司 | System and method for processing missed configuration neighborhood in wireless access network |
| CN101022589A (en) * | 2007-03-07 | 2007-08-22 | 华为技术有限公司 | System message cutting method |
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