CN101420791A - Resource scheduling method for link between base station and relay station - Google Patents
Resource scheduling method for link between base station and relay station Download PDFInfo
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- CN101420791A CN101420791A CNA2008102274299A CN200810227429A CN101420791A CN 101420791 A CN101420791 A CN 101420791A CN A2008102274299 A CNA2008102274299 A CN A2008102274299A CN 200810227429 A CN200810227429 A CN 200810227429A CN 101420791 A CN101420791 A CN 101420791A
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Abstract
Wide-area continuous coverage and transmission support at a higher rate are required in the development of the wireless communication in the future. The relay technology, as an emerging one, attracts wider and wider attention, while the resource scheduling problem in the relay network arises in the wireless resource management after the relay station is introduced, wherein, a link between a base station and the relay station is known as a relay link. In the existing proposal, the base station is in full charge of the resource management of the relay link, and the relay station needs to report the CQI (Channel Quality Indication) information of all the channels in a downlink relay link to the base station. The invention provides a method for scheduling the resources of the link between the base station and the relay station, the method is characterized in that the relay station only needs to report the resource analog allocation result of the downlink relay link and part of the CQI information of the downlink relay link in better condition to the base station, the reported information is far less than the CQI information of all the channels in the downlink relay link, thereby reducing the signaling overhead of the downlink relay link.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the resource regulating method of link between a kind of base station and the relay station.
Background technology
The demand for development of following radio communication realizes that wide area covers continuously, supports the higher rate transmission.Relaying technique has caused attention more and more widely as a kind of emerging technology.Because relaying technique can increase power system capacity and covering, this has opened up wide prospect for the application of relaying technique, also wireless communication technology has been proposed new challenge simultaneously.Use after the relay station in network, also can bring a series of problem, the user in the relay domain need could be connected with the base station through double bounce, has not only increased the time delay of communication, also can increase intrasystem signaling consumption.
Resource scheduling in the junction network is a new problem of RRM behind the introducing relay station.In junction network, the link between base station and the relay station is called repeated link, and the link between base station and the travelling carriage is called access link, and the link between relay station and the travelling carriage is also referred to as access link.Fig. 1 is a junction network Linktype schematic diagram in the existing scheme.
In the existing scheme, the scheduling of resource of repeated link is responsible for fully by the base station, relay station need comprise following two parts to the information that the base station reports: the 1. CQI of all channels of repeated link (Channel QualityIndication, channel quality indication) information; 2. the business information of travelling carriage, promptly second jump link scheduling good after, according to the difference of the user business type that has been dispatched to, add up the data volume of every kind of service needed.What of repeated link data volume are the business information of the travelling carriage that the base station reports according to relay station can add up, and can realize that according to CQI information optimized distribution uses minimum resource to satisfy the requirement of repeated link.But this scheme relay station need report the CQI information of all channels of repeated link to the base station in FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) system, and signaling consumption is bigger.
Summary of the invention
The present invention proposes the resource regulating method of link between a kind of base station and the relay station, to reduce the signaling consumption of repeated link in the FDD system.
The CQI information of relay station statistics downlink relay link;
Relay station is simulated the resource allocation of downlink relay link according to the CQI information of downlink relay link and the business information of travelling carriage;
Relay station with downlink relay link resource simulation distribution result and downlink relay link channel condition preferably the CQI information of a part of channel report the base station;
The result that the base station reports according to relay station gives each relay station with the resource allocation of downlink relay link.
When adopting distributed scheduling, the business information of travelling carriage is after resource that relay station uses the base station to distribute for oneself is dispatched the second jumping link, and the travelling carriage that has been dispatched to is classified, added up and obtain by class of business;
When adopting centralized scheduling, to be the base station jump after link dispatches second the business information of travelling carriage, the travelling carriage that has been dispatched to is classified, add up and obtain by class of business, the base station with the notification of business information of travelling carriage to relay station.
When adopting distributed scheduling, simulate distribution result, the downlink relay link channel condition CQI information of a part of channel preferably except the downlink relay link resource, relay station also will report the base station to the business information of travelling carriage;
When adopting centralized scheduling, because second jumps link by base station scheduling, so relay station does not need the business information of travelling carriage is reported the base station, only need with downlink relay link resource simulation distribution result, downlink relay link channel condition preferably the CQI information of a part of channel report the base station.
The base station judges according to the information that relay station reports whether the downlink relay link resource simulation distribution result of each relay station clashes;
When the downlink relay link resource of each relay station simulation distribution result when no conflict occurred, relay station is given with the resource allocation that the relay station simulation distributes in the base station;
When the downlink relay link resource simulation distribution result of each relay station clashed, the base station judged whether MCS (Modulation and Coding Scheme, modulation and the coded system) grade of relay station on this resource that clashes be identical;
When the MCS grade of the relay station that clashes on this resource was inequality, the high relay station of MCS grade was preferentially given with resource allocation in the base station;
When the MCS grade of the relay station that clashes on this resource was identical, the base station judged whether the traffic carrying capacity of the relay station that clashes is identical;
When the traffic carrying capacity of the relay station that clashes was inequality, the big relay station of traffic carrying capacity was preferentially given with resource allocation in the base station;
When the traffic carrying capacity of the relay station that clashes was identical, wherein any one relay station was given with this resource allocation in the base station.
In the process of scheduling,, at this time need append and distribute a considerable amount of resources by the channel information that the base station reports according to relay station because the conflict in the resource allocation of simulation downlink relay link causes certain part relay station unallocated to enough resources.
The embodiment of the invention provides the resource regulating method of link between a kind of base station and the relay station, relay station is according to the business information of the channel information and the travelling carriage of downlink relay link, the resource allocation of simulation downlink relay link, to simulate afterwards distribution result, channel condition preferably the CQI information etc. of a part of channel report the base station, dispatch repeated link according to the information that relay station reports the base station.Relay station to the information that the base station reports with respect to the CQI information of all channels, to lack many, therefore can reduce the signaling consumption of repeated link.
Description of drawings
Fig. 1 is a junction network Linktype schematic diagram in the existing scheme;
Fig. 2 is the resource regulating method of link between base station and the relay station in the embodiment of the invention;
Fig. 3 is the method that relay station obtains the business information of travelling carriage in the embodiment of the invention;
Fig. 4 be in the embodiment of the invention relay station to the method for base station reporting information;
Fig. 5 is the method that the resource allocation of downlink relay link is given each relay station in the base station in the embodiment of the invention.
Embodiment
The invention provides the resource regulating method of link between a kind of base station and the relay station.
As shown in Figure 2, the scheduling of resource of link mainly comprises the steps: between base station and the relay station
The CQI information of S201, relay station statistics downlink relay link;
S202, relay station are simulated the resource allocation of downlink relay link according to the CQI information of downlink relay link and the business information of travelling carriage;
S203, relay station with downlink relay link resource simulation distribution result and downlink relay link channel condition preferably the CQI information of a part of channel report the base station;
The result that S204, base station report according to relay station gives each relay station with the resource allocation of downlink relay link.
As shown in Figure 3, the business information of relay station acquisition travelling carriage mainly comprises the steps:
S301, judge whether to adopt distributed scheduling, if, then carry out S302, if not, promptly adopt centralized scheduling, then carry out S303;
The resource that S302, relay station use the base station to distribute for oneself is jumped link to second dispatches, and the business information that obtains travelling carriage is classified, added up to the travelling carriage that has been dispatched to by class of business;
S303, base station are classified, are added up the business information that obtains travelling carriage with the travelling carriage that has been dispatched to by class of business, and give relay station with the notification of business information of travelling carriage after the second jumping link is dispatched.
As shown in Figure 4, relay station mainly comprises the steps: to the base station reporting information
S401, judge whether to adopt distributed scheduling, if, then carry out S402, if not, promptly adopt centralized scheduling, then carry out S403;
S402, relay station will the CQI information of a part of channel and the business information of travelling carriage report the base station preferably downlink relay link resource simulation distribution result, downlink relay link channel condition;
S403, owing to second jump link by base station scheduling, so relay station does not need the business information of travelling carriage is reported the base station, only need with downlink relay link resource simulation distribution result and downlink relay link channel condition preferably the CQI information of a part of channel report the base station.
As shown in Figure 5, the base station mainly comprises the steps: to each relay station the resource allocation of downlink relay link
S501, base station judge that according to the information that relay station reports whether each relay station downlink relay link resource simulation distribution result clashes, and if not, then carries out S502, if then carry out S503;
Relay station is given with the resource allocation that the relay station simulation distributes in S502, base station;
S503, base station judge whether the MCS grade of relay station on this resource that clashes be identical, if not, then carries out S504, if then carry out S505;
The high relay station of MCS grade is preferentially given with resource allocation in S504, base station;
S505, base station judge whether the traffic carrying capacity of the relay station that clashes is identical, if not, then carries out S506, if then carry out S507;
The big relay station of traffic carrying capacity is preferentially given with resource allocation in S506, base station;
Wherein any one relay station is given with this resource allocation in S507, base station.
S508, in the process of scheduling because the conflict in the simulation downlink relay link resource allocation causes certain part relay station unallocated to enough resources, at this time need append and distribute a considerable amount of resources by the channel information that the base station reports according to relay station.
Innovative point explanation of the present invention:
1, when the dispatching of relays link, carries out the simulation of downlink relay link resource by relay station and distribute and will simulate distribution result and report the base station, as the reference information of base station scheduling in the mode of advising.
2, when each relay station simulation distribution clashes, the best relay station of channel condition is preferentially given with resource allocation in the base station, if channel condition is best a plurality of relay stations are arranged, then distribute, preferentially give the big relay station of traffic carrying capacity channel allocation according to the size of each relay station traffic carrying capacity.
Relay station need report the CQI information of all channels of repeated link to the base station in the existing scheme, but in the present invention, relay station only needs to report the resource Simulation result of downlink relay link and the downlink relay link channel condition CQI information of a part of channel preferably to the base station, it is many that these will lack with respect to the CQI information of all channels, therefore can reduce the signaling consumption of repeated link.
It should be noted last that: above embodiment is the unrestricted technological thought of the present invention in order to explanation only, does not break away from any modification or partial replacement of spirit of the present invention and method scope, and it all is encompassed in the middle of the claim scope of the present invention.
Claims (5)
1, the resource regulating method of link between a kind of base station and the relay station is characterized in that, comprising:
The CQI of relay station statistics downlink relay link (Channel Quality Indication, channel quality indication) information;
Relay station is simulated the resource allocation of downlink relay link according to the CQI information of downlink relay link and the business information of travelling carriage;
Relay station with downlink relay link resource simulation distribution result and downlink relay link channel condition preferably the CQI information of a part of channel report the base station;
The result that the base station reports according to relay station gives each relay station with the resource allocation of downlink relay link.
2, the method for claim 1 is characterized in that, also comprises:
When adopting distributed scheduling, the business information of travelling carriage is after resource that relay station uses the base station to distribute for oneself is dispatched the second jumping link, and the travelling carriage that has been dispatched to is classified, added up and obtain by class of business;
When adopting centralized scheduling, to be the base station jump after link dispatches second the business information of travelling carriage, the travelling carriage that has been dispatched to is classified, add up and obtain by class of business, the base station with the notification of business information of travelling carriage to relay station.
3, the method for claim 1 is characterized in that, also comprises:
When adopting distributed scheduling, simulate distribution result, the downlink relay link channel condition CQI information of a part of channel preferably except the downlink relay link resource, relay station also will report the base station to the business information of travelling carriage;
When adopting centralized scheduling, because second jumps link by base station scheduling, so relay station does not need the business information of travelling carriage is reported the base station, only need with downlink relay link resource simulation distribution result and downlink relay link channel condition preferably the CQI information of a part of channel report the base station.
4, the method for claim 1 is characterized in that, also comprises:
The base station judges according to the information that relay station reports whether the downlink relay link resource simulation distribution result of each relay station clashes;
When the downlink relay link resource of each relay station simulation distribution result when no conflict occurred, relay station is given with the resource allocation that the relay station simulation distributes in the base station;
When the downlink relay link resource simulation distribution result of each relay station clashed, the base station judged whether MCS (Modulation and Coding Scheme, modulation and the coded system) grade of relay station on this resource that clashes be identical;
When the MCS grade of the relay station that clashes on this resource was inequality, the high relay station of MCS grade was preferentially given with resource allocation in the base station;
When the MCS grade of the relay station that clashes on this resource was identical, the base station judged whether the traffic carrying capacity of the relay station that clashes is identical;
When the traffic carrying capacity of the relay station that clashes was inequality, the big relay station of traffic carrying capacity was preferentially given with resource allocation in the base station;
When the traffic carrying capacity of the relay station that clashes was identical, wherein any one relay station was given with this resource allocation in the base station.
5, method as claimed in claim 4 is characterized in that, also comprises:
In the process of scheduling,, at this time need append and distribute a considerable amount of resources by the channel information that the base station reports according to relay station because the conflict in the resource allocation of simulation downlink relay link causes certain part relay station unallocated to enough resources.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102274299A CN101420791A (en) | 2008-11-26 | 2008-11-26 | Resource scheduling method for link between base station and relay station |
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| CNA2008102274299A CN101420791A (en) | 2008-11-26 | 2008-11-26 | Resource scheduling method for link between base station and relay station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139110A1 (en) * | 2009-06-02 | 2010-12-09 | 华为技术有限公司 | Method, corresponding device and communication system for resource scheduling |
| CN102065560A (en) * | 2011-01-11 | 2011-05-18 | 电信科学技术研究院 | Method and equipment for processing CSI (Channel State Information) reporting collision |
| CN102098147A (en) * | 2011-02-01 | 2011-06-15 | 上海华为技术有限公司 | CQI adjustment method, user equipment, base station and system |
| CN103384406A (en) * | 2012-05-03 | 2013-11-06 | 普天信息技术研究院有限公司 | Dispatching method of relay system |
| CN103828280A (en) * | 2012-08-01 | 2014-05-28 | 华为技术有限公司 | Uplink control information reporting method and terminal, and base station |
-
2008
- 2008-11-26 CN CNA2008102274299A patent/CN101420791A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139110A1 (en) * | 2009-06-02 | 2010-12-09 | 华为技术有限公司 | Method, corresponding device and communication system for resource scheduling |
| CN102450068B (en) * | 2009-06-02 | 2014-03-26 | 华为技术有限公司 | Method, corresponding device and communication system for resource scheduling |
| CN102065560A (en) * | 2011-01-11 | 2011-05-18 | 电信科学技术研究院 | Method and equipment for processing CSI (Channel State Information) reporting collision |
| CN102065560B (en) * | 2011-01-11 | 2013-07-31 | 电信科学技术研究院 | Method and equipment for processing CSI (Channel State Information) reporting collision |
| CN102098147A (en) * | 2011-02-01 | 2011-06-15 | 上海华为技术有限公司 | CQI adjustment method, user equipment, base station and system |
| CN102098147B (en) * | 2011-02-01 | 2013-06-12 | 上海华为技术有限公司 | CQI adjustment method, user equipment, base station and system |
| CN103384406A (en) * | 2012-05-03 | 2013-11-06 | 普天信息技术研究院有限公司 | Dispatching method of relay system |
| CN103384406B (en) * | 2012-05-03 | 2016-05-11 | 普天信息技术研究院有限公司 | A kind of dispatching method of relay system |
| CN103828280A (en) * | 2012-08-01 | 2014-05-28 | 华为技术有限公司 | Uplink control information reporting method and terminal, and base station |
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Open date: 20090429 |