CN101984708A - Method and device for configuring search interval of physical downlink control channels - Google Patents
Method and device for configuring search interval of physical downlink control channels Download PDFInfo
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- CN101984708A CN101984708A CN2010105404268A CN201010540426A CN101984708A CN 101984708 A CN101984708 A CN 101984708A CN 2010105404268 A CN2010105404268 A CN 2010105404268A CN 201010540426 A CN201010540426 A CN 201010540426A CN 101984708 A CN101984708 A CN 101984708A
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Abstract
The invention provides a method and a device for configuring search interval of physical downlink control channels, and the method comprises the following steps: leading a base station to reserve carrier resources from different types of the physical downlink control channels; leading the base station to determine the search interval of the physical downlink control channels of the carrier resources; leading the base station to select a composition carrier from the reserved carrier resources for the physical downlink control channels according to parameter information on the user side; and leading the base station to authorize the passing of the composition carrier determined by the user side. In the technical scheme, the base station considers the compromise of blind decoding load reduction and common signaling flexibility reduction when distributing the reserved resources with different types of the search interval for the user side. Simultaneously, the reversed resources can be flexibly deployed by the base station according to the demands of a system, thereby further improving the utilization rate of the resources.
Description
Technical field
The present invention relates to moving communicating field, more specifically, relate to a kind of physical downlink control channel scouting interval collocation method and device.
Background technology
In follow-on broadband wireless communication network, how to solve in the cordless communication network and to support bigger bandwidth to become a key factor that improves inter-cell user terminal throughput and user terminal average throughput under the bandwidth in current wireless communication system and be faced with formidable challenges.
At present, long-term technology evolution (Long Term Evolution in third generation partner program, LTE) all propose to adopt the mode of carrier aggregation to come in current wireless communication system, to support effectively bigger bandwidth in, to satisfy in the new generation of wireless standard demand to indexs such as throughput, peak rates.Carrier aggregation is to support the key technology of bigger bandwidth in the future broadband wireless communication systems, by different carrier waves is carried out polymerization, form the carrier wave of bigger bandwidth, user terminal (the User Equipment that support has stronger ability on the bandwidth after the polymerization, UE), for example, the bandwidth that surpasses 100MHz among the LTE-Advanced.But regulation is authorized separately coding based on the DCI form to each DL distribution and UL that forms carrier wave to the single carrier that may have extra 0-3bit carrier wave indicating device at present, (Physical Downlink Control CHannel PDCCH) has the relation of scouting interval and signaling flexibility and blind decoding load in backward compatibility and the non-backward compatible system at the same time and do not consider physical downlink control channel.
Summary of the invention
The objective of the invention is to propose a kind of physical downlink control channel scouting interval collocation method and device.
For achieving the above object, the present invention proposes a kind of physical downlink control channel scouting interval collocation method, and carrier resource is reserved from dissimilar physical downlink control channels in the base station; The scouting interval of the physical downlink control channel of carrier resource is determined in the base station; The base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the parameter information of user side; The composition carrier wave of determining by user side is authorized in the base station.
Further, described base station is reserved carrier resource according to the backward compatibility characteristic of user side from dissimilar physical downlink control channels.
Further, described reservation carrier resource comprises backward compatibility reserved resource and non-backward compatible reserved resource; Described backward compatibility reserved resource and non-backward compatible reserved resource use the scouting interval of dissimilar physical downlink control channels.
Further, the base station is at first distributed from dissimilar physical downlink control channel reserved resources according to the backward compatibility characteristic of user side and is formed carrier resource, determines the scouting interval simultaneously; Secondly, other composition carrier wave is distributed in the base station according to the parameter information of user side.
Further, carrier resource can be formed for user side only distributes in the base station from reserved resource, and also the difference that can use for user side is according to demand formed the dissimilar carrier wave of allocation of carriers.
In addition, the present invention also proposes a kind of physical downlink control channel scouting interval inking device, and described device comprises: resource reservation module, scouting interval are determined mould, form carrier wave selection module and authorization module.
Described resource reservation module is reserved carrier resource from dissimilar physical downlink control channels;
Described scouting interval module is determined the scouting interval of the physical downlink control channel of carrier resource;
It is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the parameter information of user side that described composition carrier wave is selected module;
The composition carrier wave that described authorization module mandate is determined by user side.
Further, described resource reservation module is reserved carrier resource according to the backward compatibility characteristic of user side from dissimilar physical downlink control channels.
Further, described reservation carrier resource comprises backward compatibility reserved resource and non-backward compatible reserved resource; Described backward compatibility reserved resource and non-backward compatible reserved resource use the scouting interval of dissimilar physical downlink control channels.
Further, described device also comprises the bandwidth ability determination module, and described bandwidth ability determination module is determined the bandwidth ability of user side.
Further, described device also comprises judge module, described judge module determines according to feedback whether the parameter information of user side changes, if change, then the base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the performance requirement of user side again; If do not change, the composition carrier wave determined by user side by uplink grant of base station then.
The present invention has following technique effect: in the technical solution of the present invention, when the base station is the reserved resource of the different scouting interval types of user side distribution, consider the compromise that blind decoding load reduction and common signaling flexibility reduce, simultaneously, reserved resource is allocated by the base station flexibly according to system requirements, has further improved resource utilization.
Description of drawings
Fig. 1 is a physical downlink control channel scouting interval collocation method schematic flow sheet in the embodiment of the invention;
Fig. 2 is a physical downlink control channel scouting interval inking device module diagram of the present invention.
Embodiment
The present invention relates to cordless communication network, refer more particularly to Physical Cell Identifier distribution method new in the carrier aggregation.Technical solution of the present invention mainly comprises following content:
The base station is according to the backward compatibility characteristic of user side, remain for physical downlink control channel (Physical Downlink Control CHannel, resource PDCCH), and be divided into two classes in advance, one class is the backward compatibility reserved resource, and an other class is the non-backward compatible reserved resource.Use the scouting interval of dissimilar physical downlink control channels on the two class resources.The base station is at first distributed from dissimilar physical downlink control channel reserved resources according to the backward compatibility characteristic of user side and is formed carrier resource, determines the scouting interval simultaneously; Secondly, the base station is according to other composition carrier wave of information distribution such as the bandwidth of user side, performance requirement, and all of base station assigns are formed the carrier wave demand that carrier waves satisfy user side.Carrier resource can be formed for user side only distributes in the base station from reserved resource, also the difference that can use for user side is according to demand formed the dissimilar carrier wave of allocation of carriers.Because non-backward compatible is reserved the scouting interval of the scouting interval of carrier wave more than or equal to backward compatibility reservation carrier wave, therefore, the use that non-backward compatible is reserved carrier wave can effectively reduce the load of user side blind decoding, but can reduce the flexibility of common signaling simultaneously.Then just opposite to the use of compatibility reservation carrier wave.So, when the base station is the reserved resource of the different scouting interval types of user side distribution, consider the compromise that blind decoding load reduction and common signaling flexibility reduce.Simultaneously, reserved resource can be allocated by the base station flexibly according to system requirements, with further raising resource utilization.
Below in conjunction with drawings and Examples technical solution of the present invention is described in further detail.
Please refer to shown in Figure 1ly, be physical downlink control channel scouting interval collocation method schematic flow sheet in the embodiment of the invention;
May further comprise the steps:
S101: carrier resource is reserved according to the backward compatibility characteristic of user side in the base station;
The base station remains for the resource of physical downlink control channel in advance according to the backward compatibility characteristic of user side, and is divided into two classes, and a class is the backward compatibility reserved resource, and an other class is the non-backward compatible reserved resource.
S102: the scouting interval of the physical downlink control channel of reservation carrier resource is determined in the base station;
Use the scouting interval of dissimilar physical downlink control channels on the two class resources.The base station is at first distributed from dissimilar physical downlink control channel reserved resources according to the backward compatibility characteristic of user side and is formed carrier resource, determines the scouting interval simultaneously.
S103: the bandwidth ability of user side is determined in the base station;
The base station obtains the bandwidth ability of user side by monitoring,
S104: the base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to parameters such as the bandwidth of user side, performance requirements;
The base station is according to other composition carrier wave of information distribution such as the bandwidth of user side, performance requirement, and all of base station assigns are formed the carrier wave demand that carrier waves satisfy user side.
S105: remaining composition carrier wave is selected for user side in the base station from other carrier resources, and satisfies the bandwidth demand of user side;
Carrier resource can be formed for user side only distributes in the base station from reserved resource, also the difference that can use for user side is according to demand formed the dissimilar carrier wave of allocation of carriers.
S106: the base station determines according to feedback whether the bandwidth ability or the performance requirement of user side change, if change, then forward step S104 to, otherwise, forward step S107 to;
The base station determines according to feedback whether the bandwidth ability or the performance requirement of user side change, if change, then the base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the performance requirement of user side again; If do not change, then forward step S107 to.
S107: the composition carrier wave that the base station is determined by user side by uplink grant;
For the composition carrier wave of determining by user side, the base station is by the described composition carrier wave of uplink grant.
S108: the composition carrier communication that user side uses the base station to determine.
For the composition carrier wave of base station by uplink grant, user side uses the composition carrier wave of these mandates to communicate.
Please refer to shown in Figure 2, be physical downlink control channel of the present invention scouting interval inking device module diagram, it comprises that resource reservation module, scouting interval determine mould, bandwidth ability determination module, form carrier wave and select module, judge module and authorization module.
Described resource reservation module is reserved carrier resource according to the backward compatibility characteristic of user side.
The described scouting interval is determined definite scouting interval of reserving the physical downlink control channel of carrier resource of mould.
Described bandwidth ability determination module is determined the bandwidth ability of user side.
It is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the performance requirement of user side that described composition carrier wave is selected module.
Described judge module determines according to feedback whether the bandwidth ability or the performance requirement of user side change, if change, then the base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the performance requirement of user side again; If do not change, the composition carrier wave determined by user side by uplink grant of base station then.
The composition carrier wave that described authorization module is determined by user side by uplink grant.
Because non-backward compatible is reserved the scouting interval of the scouting interval of carrier wave more than or equal to backward compatibility reservation carrier wave, therefore, the use that non-backward compatible is reserved carrier wave can effectively reduce the load of user side blind decoding, but can reduce the flexibility of common signaling simultaneously.Then just opposite to the use of compatibility reservation carrier wave.So, when the base station is the reserved resource of the different scouting interval types of user side distribution, consider the compromise that blind decoding load reduction and common signaling flexibility reduce.Simultaneously, reserved resource can be allocated by the base station flexibly according to system requirements, with further raising resource utilization.
Certainly; the present invention also can have numerous embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes or variation according to the present invention; in every case any modification of being done within the spirit and principles in the present invention, be equal to replacements, improvement, all should be included within protection scope of the present invention.
Claims (10)
1. physical downlink control channel scouting interval collocation method, carrier resource is reserved from dissimilar physical downlink control channels in the base station; The scouting interval of the physical downlink control channel of carrier resource is determined in the base station; The base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the parameter information of user side; The composition carrier wave of determining by user side is authorized in the base station.
2. method according to claim 1 is characterized in that: described base station is reserved carrier resource according to the backward compatibility characteristic of user side from dissimilar physical downlink control channels.
3. method according to claim 2 is characterized in that: described reservation carrier resource comprises backward compatibility reserved resource and non-backward compatible reserved resource; Described backward compatibility reserved resource and non-backward compatible reserved resource use the scouting interval of dissimilar physical downlink control channels.
4. method according to claim 3 is characterized in that: the base station is at first distributed from dissimilar physical downlink control channel reserved resources according to the backward compatibility characteristic of user side and is formed carrier resource, determines the scouting interval simultaneously; Secondly, other composition carrier wave is distributed in the base station according to the parameter information of user side.
5. according to each described method of claim 1 to 4, it is characterized in that: carrier resource can be formed for user side only distributes in the base station from reserved resource, also the difference that can use for user side is according to demand formed the dissimilar carrier wave of allocation of carriers.
6. physical downlink control channel scouting interval inking device is characterized in that described device comprises: resource reservation module, scouting interval determine mould, form carrier wave selects module and authorization module.
Described resource reservation module is reserved carrier resource from dissimilar physical downlink control channels;
Described scouting interval module is determined the scouting interval of the physical downlink control channel of carrier resource;
It is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the parameter information of user side that described composition carrier wave is selected module;
The composition carrier wave that described authorization module mandate is determined by user side.
7. device according to claim 6 is characterized in that: described resource reservation module is reserved carrier resource according to the backward compatibility characteristic of user side from dissimilar physical downlink control channels.
8. device according to claim 6 is characterized in that: described reservation carrier resource comprises backward compatibility reserved resource and non-backward compatible reserved resource; Described backward compatibility reserved resource and non-backward compatible reserved resource use the scouting interval of dissimilar physical downlink control channels.
9. device according to claim 6 is characterized in that: described device also comprises the bandwidth ability determination module, and described bandwidth ability determination module is determined the bandwidth ability of user side.
10. device according to claim 6, it is characterized in that: described device also comprises judge module, described judge module determines according to feedback whether the parameter information of user side changes, if change, then the base station is that physical downlink control channel selects to form carrier wave from reserve carrier resource according to the performance requirement of user side again; If do not change, the composition carrier wave determined by user side by uplink grant of base station then.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113660728A (en) * | 2016-02-05 | 2021-11-16 | 松下电器（美国）知识产权公司 | Base station, terminal and communication method |
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Application publication date: 20110309 |