CN103379648A - Relay coordination scheduling method and device - Google Patents
Relay coordination scheduling method and device Download PDFInfo
- Publication number
- CN103379648A CN103379648A CN2012101052235A CN201210105223A CN103379648A CN 103379648 A CN103379648 A CN 103379648A CN 2012101052235 A CN2012101052235 A CN 2012101052235A CN 201210105223 A CN201210105223 A CN 201210105223A CN 103379648 A CN103379648 A CN 103379648A
- Authority
- CN
- China
- Prior art keywords
- relaying
- resource
- scheduling
- base station
- channel quality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a relay coordination scheduling method and a device. The method comprises a relay, based on subband channel quality information measured and reported by UE which is covered by the relay, determines resources which are used during scheduling the UE covered by the relay; the relay, by utilizing the subband channel quality information which needs to be fed back to a host base station, notifies the host base station that the resources cannot be used in relay scheduling; and the host base station, based on the received subband channel quality information, performs scheduling on the relay in other available resources except the resources at corresponding scheduling time. Through the relay coordination scheduling method and the device, interference coordination between a Un interface and a Uu interface on a relay side can be effectively realized, and consumption of air interface resources between the relay and the host base station is small.
Description
Technical field
The present invention relates to the dispatching technique in the mobile communication system, particularly relate to a kind of relaying coordinated scheduling method and device.
Background technology
In the middle of the follow-up mobile communication system of 3G, along with the increase of user for the demand of system bandwidth, the frequency range that mobile communication system adopts is had to higher frequency range development, as adopting frequency range that surpasses 3GHz etc., this moment, the reduction of radio wave transmissions distance caused dwindling of base station range; The simultaneously increase of user capacity is so that the researcher has to seek the method that can enlarge network capacity on the framework basis of cellular network, and the introducing of relay has caused in the industry more and more concern gradually like this.The introducing of relaying relatively was typically in the middle of the WiMAX system, and IEEE802.16J formulated the standard of junction network since 2006, and standard is finished in expectation in June, 2008; In the middle of the IMT-Advanced, the introducing of clear and definite relaying is an one key character; At present, the formulation of LTE-Advanced standard is finished, and wherein also will introduce relaying (RN) and overcome coverage that LTE may exist and the defective on the capacity.
The trunk type of supporting among the R10 has three kinds, and Outband relaying, inband also need the relaying of resource division, inband not to need resource division.And whether the physical layer characteristic (such as frame structure and physical channel) that the difference of this three classes relaying is mainly reflected in Un interface (being the interface between base station and the relaying) is and the Uu interface (interface between the UE of relaying and its covering, be the RN-UE interface) different, other functional characteristic is identical.
The frequency resource of using when RN-UE interface and Un mouth not simultaneously, this relaying is the outband relaying.Because the Outband relaying will use different frequencies on Uu and Un interface, therefore can not cause in the transmitting-receiving of trunk side and disturb, therefore at the Outband relay system, Uu interface between Un interface and the RN-UE will be divided by the resource of frequency range, the physical layer characteristic of Un interface will with the Uu interface be identical.
For the Inband relaying, according to whether needs carry out resource division to Un mouth and RN-UE interface, the Inband relaying is divided into two kinds.A kind of is to need resource division, and the RN-UE interface uses identical resource with the Un interface, by the mode of time division multiplexing (TDM), avoids the transmitting-receiving of via node to disturb.This class relaying the physical layer characteristic of Un mouth will with the Uu interface on different.Another kind is not need resource division, and the RN-UE interface uses identical resource with the Un interface, but by the performance of raising via node duplexer or the isolation of RN dual-mode antenna, reduces the transmitting-receiving of via node and disturb.This class relaying the physical layer characteristic of Un interface will with the Uu interface be identical.
Introducing relaying in wireless communication system is a necessary process of network Development.And the introducing of via node has brought larger impact to the allocation of radio resources of system with scheduling.From the angle of allocation of radio resources, the base station not only will be the access link Resources allocation, also will be newly-increased interface repeated link Resources allocation.And from scheduling, generally have dual mode, a kind of is that the scheduling that interior all nodes of multihop cell comprise the UE that relaying and relaying cover is responsible in the base station, is called as the centralized dispatching mode; Another is that the base station only is responsible for repeated link and is transmitted the namely scheduling of relay itself, and the UE of relaying covering finishes scheduled transmission by relaying, and this mode is called as distributed scheduling.The dispatching method of R10 regulation is distributed scheduling at present.
For the Inband relaying that does not need resource division, need to utilize isolation on the space to carry out two interface Un of relay connection and the interference of Uu interface is avoided.
Fig. 1 is the network diagram that an arrangement has relaying, trunking is by ustomer premises access equipment (Customer Premises Equipment as shown in Figure 1, CPE) and eNB (base station equipment) serial connection form, CPE receives the data of DeNB, is transmitted to the BBU of eNB by optical fiber or cable.BBU finishes covering by the air interface of self.The Radio Resource that adopts of the DeNB on the left side and the covering of the right BBU is identical in principle, and this scheme wishes to utilize CPE to carry out the Un interface to the isolation of Uu interface to the isolation that exists between the radiofrequency signal of the right RRU.
Pass through generally speaking detailed prospecting, exist CPE to receive the scene that the DeNB signal is better than the right RRU signal 10 several dB, but be limited to actual environment, this situation might not find easily.Therefore the signal (Uu interface) of the antenna transmission of the right RRU may produce serious interference for the reception (Un interface) of CPE.
At present, for above-mentioned interference problem, can only carry out avoiding of co-channel interference by the interference coordination algorithm of X2 interface (this interface is the interface between the base station) between the responsible coverage cell of trunk side BBU and host base station (DeNB), it is mutual that but the disturbance coordination method between this adjacent base station needs to carry out between relaying and the host base station a large amount of space interface signalings, will take a large amount of interface-free resources like this, affect the proper communication between relaying and the host base station.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of relaying coordinated scheduling method and device, can effectively realize the interference coordination between trunk side Un and the Uu interface, and the interface-free resources expense between relaying and the host base station is little.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of relaying coordinated scheduling method, the method may further comprise the steps:
A, relaying be according to the sub-band channel quality information Subband CQI that the UE measurement of its covering reports, employed resource when determining UE that this relaying of scheduling covers;
B, described relaying utilization need to the described sub-band channel quality information of host's base station feedback, be to be not useable for the resource notification of relay scheduling to described host base station with described resource;
The scheduling of relaying in correspondence scheduling time section, in other available resources scopes except described resource, is carried out according to the described sub-band channel quality information that receives in c, described host base station.
A kind of relaying coordinated scheduling device, this device comprises:
The relay scheduling unit is used for relaying according to the sub-band channel quality information Subband CQI that UE measurements of its covering reports, employed resource when determining the UE of this relaying of scheduling covering;
Notification unit, being used for described relaying utilization need to the described sub-band channel quality information of host's base station feedback, be to be not useable for the resource notification of relay scheduling to described host base station with described resource;
The base station scheduling unit is used for described host base station according to the described sub-band channel quality information that receives, and in correspondence scheduling time section, in other available resources scopes except described resource, carries out the scheduling of relaying.
In sum, the relaying coordinated scheduling method that the present invention proposes, at first determined to dispatch the resource of UE by relaying, by the sub-band channel quality information (Subband CQI) to host's base station feedback, trigger the host base station and do not recycle the row scheduling of going on of these resource centerings, thereby can reduce the interference of using same asset to produce owing to relaying and host base station, and then can realize interference coordination between trunk side Un and the Uu interface, and can additionally not produce the interface-free resources between relaying and the host base station.
Description of drawings
Fig. 1 is the network diagram that an arrangement has relaying;
Fig. 2 is the method flow schematic diagram of the embodiment of the invention one;
Fig. 3 is the apparatus structure schematic diagram of the embodiment of the invention one.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is: take relaying as the main coordinated scheduling that carries out, namely at first determined to dispatch the resource of employing by relaying, then by in the sub-band channel quality information of host's base station feedback, these resources being designated as disabled resource, make the host base station not recycle the go on row scheduling of these resource centerings, thereby can reduce the interference between trunk side Un and the Uu interface, and owing to the new Signalling exchange that does not need between relaying and the host base station, therefore can additionally not produce the interface-free resources expense between relaying and the host base station.
Fig. 2 is the method flow diagram of the embodiment of the invention one, and as shown in Figure 2, the method may further comprise the steps:
Here need to prove that in existing system, relaying will act on the allocation of radio resources of relaying coverage cell simultaneously to the sub-band channel quality information (Subband CQI) of host's base station feedback.
In actual applications, equally with existing system can obtain sub-band channel quality information by the UE of the Base Band Unit in the described relaying (BBU) by institute's coverage cell.
Particularly, inner at relaying, BBU can use state information (CSI) by channel, employed resource during UE that determined this relaying of scheduling is covered, and notice is to CPE.
Preferably, after described BBU has determined described resource, can pass through UDP/IP protocol data bag, use state information to send to CPE in the described relaying channel, described CSI carries determined resource, in order to give CPE in the described relaying with determined resource notification.
Carry channel in the described packet and use the content of state information and the type information (the CSI type namely) that described channel uses state information.Concrete form can be as shown in table 1.
Table 1
In this step, by utilizing the sub-band channel quality information that needs in the existing system to host's base station feedback, notifying the described resource in host base station is the resource that is not useable for relay scheduling, can guarantee in the interference coordination of realizing between trunk side Un and the Uu interface, can additionally not produce the interface-free resources expense between relaying and the host base station.
Here, the specific implementation of this step can for: when described relaying need to feed back to the host base station with described sub-band channel quality information, in described sub-band channel quality information, described resource identification is the resource that can not use.Like this, the employed resource of relay scheduling UE will be avoided using in the host base station, thereby can realize interference coordination.
Preferably, with described resource identification for the concrete grammar of the resource that can not use can be: the channel quality information of the subband that described resource is corresponding (CQI) value be set to 0.
In existing system, be set to 0 the corresponding resource of subband for the CQI value, the host base station will not be used further in the scheduling of relaying, therefore, adopt said method can effectively impel the host base station to avoid using the employed resource of relay scheduling UE.
Preferably, in order to strengthen the compatibility of the present invention and existing system, can be the same with existing system in this step, by described CPE to the described sub-band channel quality information of described host's base station feedback.
The scheduling of relaying in correspondence scheduling time section, in other available resources scopes except described resource, is carried out according to the described sub-band channel quality information that receives in step 203, described host base station.
Here, described correspondence scheduling time section is the time period that relaying utilizes described resource to dispatch.
As previously mentioned, the host base station can be avoided owing to the employed resource of relay scheduling UE and the identical interference that causes of the employed resource of host's base station scheduling relaying by not dispatching in the employed resource of relay scheduling UE in this step.
Fig. 3 is the relaying coordinated scheduling apparatus structure schematic diagram corresponding with said method, and this device comprises as shown in Figure 3:
The relay scheduling unit is used for relaying according to the sub-band channel quality information Subband CQI that user equipment (UE) measurements of its covering reports, employed resource when determining the UE of this relaying of scheduling covering;
Notification unit, being used for described relaying utilization need to the described sub-band channel quality information of host's base station feedback, be to be not useable for the resource notification of relay scheduling to described host base station with described resource;
The base station scheduling unit is used for described host base station according to the described sub-band channel quality information that receives, and in correspondence scheduling time section, in other available resources scopes except described resource, carries out the scheduling of relaying.
Preferably, described notification unit is further used for when described relaying need to feed back to the host base station with described sub-band channel quality information, in described sub-band channel quality information described resource identification is the resource that can not use.
Preferably, described notification unit is further used for adopting channel quality information (CQI) value of subband corresponding to described resource to be set to 0 method, with the resource of described resource identification for using.
Preferably, described relay scheduling unit is located among the Base Band Unit BBU in the described relaying.
Preferably, described notification unit is located among the CPE in the described relaying;
Described relay scheduling unit is further used for by UDP/IP protocol data bag, uses state information CSI to send to CPE in the described relaying channel, and described CSI carries determined resource.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. relaying coordinated scheduling method is characterized in that the method may further comprise the steps:
A, relaying be according to the sub-band channel quality information Subband CQI that the user equipment (UE) measurement of its covering reports, employed resource when determining UE that this relaying of scheduling covers;
B, described relaying utilization need to the described sub-band channel quality information of host's base station feedback, be to be not useable for the resource notification of relay scheduling to described host base station with described resource;
The scheduling of relaying in correspondence scheduling time section, in other available resources scopes except described resource, is carried out according to the described sub-band channel quality information that receives in c, described host base station.
2. method according to claim 1 is characterized in that, described step b comprises:
When described relaying need to feed back to the host base station with described sub-band channel quality information, in described sub-band channel quality information, described resource identification is the resource that can not use.
3. method according to claim 2 is characterized in that, among the described step b with described resource identification for the resource that can not use is:
The channel quality information CQI value of the subband that described resource is corresponding is set to 0.
4. method according to claim 1 is characterized in that, carries out the reception of described Subband CQI by the Base Band Unit BBU in the described relaying among the described step a and describedly determines.
5. method according to claim 4 is characterized in that, further comprises among the described step a:
Described BBU is by UDP/IP protocol data bag, uses state information CSI to send to ustomer premises access equipment CPE in the described relaying channel, and described CSI carries determined resource;
Among the described step b by described CPE to the described sub-band channel quality information of described host's base station feedback.
6. relaying coordinated scheduling device is characterized in that this device comprises:
The relay scheduling unit is used for relaying according to the sub-band channel quality information Subband CQI that user equipment (UE) measurements of its covering reports, employed resource when determining the UE of this relaying of scheduling covering;
Notification unit, being used for described relaying utilization need to the described sub-band channel quality information of host's base station feedback, be to be not useable for the resource notification of relay scheduling to described host base station with described resource;
The base station scheduling unit is used for described host base station according to the described sub-band channel quality information that receives, and in correspondence scheduling time section, in other available resources scopes except described resource, carries out the scheduling of relaying.
7. device according to claim 6, it is characterized in that, described notification unit is further used for when described relaying need to feed back to the host base station with described sub-band channel quality information, in described sub-band channel quality information described resource identification is the resource that can not use.
8. device according to claim 7 is characterized in that, described notification unit is further used for adopting the channel quality information CQI value of subband corresponding to described resource to be set to 0 method, with the resource of described resource identification for using.
9. device according to claim 6 is characterized in that, described relay scheduling unit is located among the Base Band Unit BBU in the described relaying.
10. device according to claim 9 is characterized in that, described notification unit is located among the ustomer premises access equipment CPE in the described relaying;
Described relay scheduling unit is further used for by UDP/IP protocol data bag, uses state information CSI to send to CPE in the described relaying channel, and described CSI carries determined resource.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105223.5A CN103379648B (en) | 2012-04-11 | 2012-04-11 | Relaying coordinated scheduling method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105223.5A CN103379648B (en) | 2012-04-11 | 2012-04-11 | Relaying coordinated scheduling method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103379648A true CN103379648A (en) | 2013-10-30 |
| CN103379648B CN103379648B (en) | 2016-03-09 |
Family
ID=49464072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210105223.5A Expired - Fee Related CN103379648B (en) | 2012-04-11 | 2012-04-11 | Relaying coordinated scheduling method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103379648B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015074270A1 (en) * | 2013-11-25 | 2015-05-28 | 华为技术有限公司 | Resource scheduling, user equipment coordination scheduling method, device and system |
| WO2016184296A1 (en) * | 2015-05-15 | 2016-11-24 | 电信科学技术研究院 | Resource coordination method and device |
| WO2023087186A1 (en) * | 2021-11-17 | 2023-05-25 | 北京小米移动软件有限公司 | Channel measurement method and apparatus therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206536A (en) * | 2006-12-22 | 2008-06-25 | 财团法人工业技术研究院 | Inertia sensing six axial direction input device and usage method thereof |
| CN102237989A (en) * | 2010-05-04 | 2011-11-09 | 中兴通讯股份有限公司 | Data transmission method and system |
-
2012
- 2012-04-11 CN CN201210105223.5A patent/CN103379648B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206536A (en) * | 2006-12-22 | 2008-06-25 | 财团法人工业技术研究院 | Inertia sensing six axial direction input device and usage method thereof |
| CN102237989A (en) * | 2010-05-04 | 2011-11-09 | 中兴通讯股份有限公司 | Data transmission method and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015074270A1 (en) * | 2013-11-25 | 2015-05-28 | 华为技术有限公司 | Resource scheduling, user equipment coordination scheduling method, device and system |
| WO2016184296A1 (en) * | 2015-05-15 | 2016-11-24 | 电信科学技术研究院 | Resource coordination method and device |
| CN106304373A (en) * | 2015-05-15 | 2017-01-04 | 电信科学技术研究院 | A kind of method and apparatus of resource coordination |
| TWI612835B (en) * | 2015-05-15 | 2018-01-21 | 電信科學技術研究院 | Method and device for resource coordination |
| WO2023087186A1 (en) * | 2021-11-17 | 2023-05-25 | 北京小米移动软件有限公司 | Channel measurement method and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103379648B (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sui et al. | Moving cells: a promising solution to boost performance for vehicular users | |
| US7756519B2 (en) | Interference mitigation technique | |
| US7756482B2 (en) | Scheduling method for wireless multihop relay communication systems and system thereof | |
| Guo et al. | Relay deployment in cellular networks: Planning and optimization | |
| CN102917448B (en) | System, device and method for transmitting cell information | |
| US20090286465A1 (en) | Scheduling methods and systems for multi-hop relay in wireless communications | |
| JP5763767B2 (en) | Method of cooperative operation with relocatable wireless node and macrocell wireless access point | |
| KR101904591B1 (en) | Methods and network nodes for communication between a first network node and a second network node over a twisted pair wire | |
| US9425914B2 (en) | Method and device for relay deployment in a TDD communication network | |
| US9686007B2 (en) | Wireless communication network using frequency conversion of MIMO signals | |
| CN102202406B (en) | Method for suppressing interference | |
| RU2510574C2 (en) | Relay device for wireless communication and communication method for relay device for wireless communication with base station and terminal | |
| EP2298018A1 (en) | Wireless backhaul | |
| US20080274746A1 (en) | Scheduling Methods and Systems for Wireless Multi-Hop Relay Communications | |
| CN102883438A (en) | Honeycomb and end-to-end mixed network interference coordinating method | |
| CN103002467A (en) | Pre-configuration method, pre-configuration system and access points for return link resources | |
| CN102711124A (en) | Power allocation method for femtocell in double-layer network | |
| CN106465223A (en) | Data transmission method and base station | |
| US9584194B2 (en) | Method and apparatus for cancelling interference | |
| CN103379648B (en) | Relaying coordinated scheduling method and device | |
| Mastrosimone et al. | A comparative analysis of mmWave vs LTE technology for 5G moving networks | |
| CN103369693B (en) | Relaying coordinated scheduling method and device | |
| CN105792229B (en) | Small cellular base station return transmission method and system based on distributed antennas | |
| Seo et al. | Relay performance analysis of TTR and STR relay modes in IEEE 802.16 j MMR system | |
| CN103369540B (en) | Relaying coordinated scheduling method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |