CN102076089B - Method and device for allocating carrier resources to user equipment (UE) - Google Patents
Method and device for allocating carrier resources to user equipment (UE) Download PDFInfo
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- CN102076089B CN102076089B CN200910238242.3A CN200910238242A CN102076089B CN 102076089 B CN102076089 B CN 102076089B CN 200910238242 A CN200910238242 A CN 200910238242A CN 102076089 B CN102076089 B CN 102076089B
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Abstract
The invention provides a method and a device for allocating carrier resources to user equipment (UE). The method comprises the following steps that: a base station divides component carriers into different path loss measuring groups; and when allocating the carrier resources to the UE, the base station allocates the carrier resources to the UE in the same path loss measuring group, and the UE is needed to feed only a path loss measuring value shared by all carriers back to the base station at the time. In the method, the path loss measuring groups are arranged, so that the superiority of carrier aggregation is ensured, the number of path loss measuring feedback values is reduced, and system overhead is effectively reduced.
Description
Technical field
The present invention relates to carrier aggregation technology, relating in particular in a kind of carrier aggregation is method and the device of user terminal distributing carrier wave resource.
Background technology
In follow-on broadband wireless communication network, how solve in cordless communication network and support larger bandwidth under the bandwidth in current wireless communication system, become and improve a key factor of inter-cell user terminal (UE, UserEquipment) throughput and user terminal average throughput and be faced with formidable challenges.At present, long-term technology evolution (LTE in third generation partner program (3GPP), Long TermEvolution) in, all proposed to adopt the mode of carrier aggregation, carry out effectively in current wireless communication system, to support larger bandwidth, to meet the demand to indexs such as throughput, peak rates in new generation of wireless standard.
Carrier aggregation is in future broadband wireless communication systems, support the key technology of larger bandwidth, by the component carrier to different, carry out polymerization, form the carrier wave of larger bandwidth, in the bandwidth after polymerization, support to have the UE of stronger ability, for example, the bandwidth that surpasses 100MHz in LTE-Advanced.It is inconsistent that in carrier aggregation, maximum problem is exactly the situations such as the path loss that experiences of the carrier wave of polymerization, propagation conditions, cause base station when carrying out scheduling of resource, to be difficult to unified judgement, that is to say, certain judgment condition is suitable for the path loss of a certain type, the carrier wave of propagation conditions, and and the path loss of other types that is not suitable for carrying out carrier aggregation, the carrier wave of propagation conditions.
At present, the carrier aggregation of discussing in LTE-Advanced is not considered the impact of the presence of intercell interference that minizone UE throughput and UE average throughput are played an important role, when being user terminal distributing carrier wave resource, to select in all component carriers from polymerization, like this, if the carrier wave of polymerization is partly subjected to serious presence of intercell interference, so, even if obtained larger bandwidth, also can make because of serious presence of intercell interference to use throughput and the rate capability degradation of the UE of this partially polymerized carrier wave, thereby offset the benefit that carrier aggregation is brought.
Summary of the invention
In view of this, it is method and the device of user terminal distributing carrier wave resource that main purpose of the present invention is to provide a kind of, can guarantee the superiority of carrier aggregation, effectively reduces overhead simultaneously.
For achieving the above object, technical scheme of the present invention is achieved in that
Be a method for user terminal distributing carrier wave resource, comprise:
Base station is divided into different path loss measurement groups by component carrier;
When base station is user terminal distributing carrier wave resource, in same path loss measurement group, be user terminal distributing carrier wave resource.
If described component carrier in same path loss measurement group can not meet the bandwidth demand of UE, the method also comprises: described base station is UE selection carrier resource from a plurality of path loss measurement groups.
Describedly component carrier is divided into different path loss measurement groups comprises: according to the index condition of different component carriers, component carrier is divided into different path loss measurement groups.
Described index condition comprises propagation conditions, and/or performance requirement.
Described propagation conditions comprises line-of-sight transmission or non line of sight transmission;
Described performance requirement comprises disturbance regime and/or speed and/or throughput.
Be a device for user terminal distributing carrier wave resource, at least comprise module and distribution module are set, wherein,
Module is set, for component carrier being divided into different path loss measurement groups;
Distribution module, while being used to user terminal distributing carrier wave resource, is user terminal distributing carrier wave resource in the same path loss measurement group in module is set.
Described distribution module also for, from a plurality of (two or more) path loss measurement group, be that UE selects carrier resource.
Described device is arranged in base station.
Describedly component carrier is divided into different path loss measurement groups comprises: according to the index condition of different component carriers, component carrier is divided into different path loss measurement groups.
Described index condition comprises propagation conditions, and/or performance requirement, and described propagation conditions comprises line-of-sight transmission or non line of sight transmission; Described performance requirement comprises disturbance regime and/or speed and/or throughput.
The technical scheme providing from the invention described above can be found out, the present invention includes base station component carrier is divided into different path loss measurement groups; When base station is user terminal distributing carrier wave resource, in same path loss measurement group, be user terminal distributing carrier wave resource.Now, UE need to only feed back the public path loss measured value of all carrier wave to base station.In the inventive method, the setting of organizing by path loss measurement, has guaranteed the superiority of carrier aggregation, has reduced the number that path loss is measured value of feedback, has effectively reduced overhead.
Further, if the component carrier in same path loss measurement group can not meet the bandwidth demand of UE, so, base station from a plurality of path loss measurement groups for UE selects carrier resource to meet its bandwidth demand.Now, allocation of carriers is measured Zu Wei unit with path loss, and each path loss measurement group at selected component carrier place is fed back respectively a public path loss measured value to base station.Can find out, due to the setting that the present invention organizes by path loss measurement, reduce the number of path loss measurement value of feedback, effectively reduce overhead.And, the division of path loss measurement group, the flexibility while having improved base station scheduling carrier resource.
Accompanying drawing explanation
Fig. 1 is that the present invention is the flow chart of the method for user terminal distributing carrier wave resource;
Fig. 2 is that the present invention is the composition structural representation of the device of user terminal distributing carrier wave resource;
Fig. 3 is that the present invention is the schematic flow sheet of the embodiment of user terminal distributing carrier wave resource.
Embodiment
Fig. 1 is that the present invention is the flow chart of the method for user terminal distributing carrier wave resource, as shown in Figure 1, comprises the following steps:
Step 100: base station is divided into different path loss measurement groups by component carrier.
Due to when the carrier aggregation, can there are a plurality of different component carriers, this step comprises: according to the index condition of different component carriers, such as propagation conditions is as line-of-sight transmission or non line of sight transmission etc., and/or performance requirement is as disturbance regime and/or speed and/or throughput etc., and component carrier is divided into a plurality of different path loss measurement groups.That is to say the similar or identical user terminal of path loss situation in same path loss measurement group has comprised all user terminals.
Step 101: when base station is user terminal distributing carrier wave resource, be user terminal distributing carrier wave resource in same path loss measurement group.Now, UE only need to feed back the public path loss measured value of all carrier wave to base station.Distribution concrete methods of realizing in this step belongs to those skilled in the art's conventional techniques means, repeats no more here, emphasizes here, carries out choosing of component carrier in the scope necessarily setting in advance.
In the inventive method, the setting of organizing by path loss measurement, is divided in the similar or identical component carrier of path loss situation in same path loss measurement group, has guaranteed to greatest extent the superiority of carrier aggregation, the number that has reduced path loss measurement value of feedback, has reduced overhead effectively.
Further, the inventive method also comprises: if the component carrier in same path loss measurement group can not meet the bandwidth demand of UE, so, base station from a plurality of path loss measurement groups for UE selects carrier resource to meet its bandwidth demand.Now, allocation of carriers is measured Zu Wei unit with path loss, and each path loss measurement group at selected component carrier place is fed back respectively a public path loss measured value to base station.Can find out, due to the setting that the present invention organizes by path loss measurement, reduce the number of path loss measurement value of feedback, effectively reduce overhead.And, because specific resource is used for each path loss measurement group in base station, that is to say, be provided with a plurality of resource groups, during base station scheduling, only need corresponding different path loss measurement group to find specific resource, and need in all resources, not find, flexibility when therefore, the division of Road of the present invention loss measurement group has improved base station scheduling carrier resource.
If base station is the bandwidth demand that meets UE, each component carrier of selection is the different path loss measurement group of correspondence respectively, and so, a path loss measured value of each component carrier feedback is to base station.
Fig. 2 is that the present invention is the composition structural representation of the device of user terminal distributing carrier wave resource, as shown in Figure 2, at least comprises module and distribution module is set, wherein,
Module is set, for component carrier being divided into different path loss measurement groups.
Distribution module, while being used to user terminal distributing carrier wave resource, is user terminal distributing carrier wave resource in the same path loss measurement group in module is set.
Described distribution module is also for, the carrier resource of selecting for UE from a plurality of (two or more) path loss measurement group.
Apparatus of the present invention can be arranged in base station.
Wherein, in apparatus of the present invention, describedly component carrier is divided into different path loss measurement groups comprises: according to the index condition of different component carriers, component carrier is divided into different path loss measurement groups.Described index condition comprises propagation conditions, and/or performance requirement, and described propagation conditions comprises line-of-sight transmission or non line of sight transmission; Described performance requirement comprises disturbance regime and/or speed and/or throughput.
Fig. 3 is that the present invention is the schematic flow sheet of the embodiment of user terminal distributing carrier wave resource, comprising:
Step 300: the division threshold value of path loss measurement group is determined in base station according to index conditions such as propagation conditions and/or performance requirements.
Step 301: base station is divided threshold value according to path loss measurement group all component carriers are divided into groups.
Step 302～step 303: base station is according to the bandwidth of UE and performance requirement, and the carrier resource that first selection satisfies the demands from a path loss measurement group, if carrier resource satisfies the demands, enters step 304; Otherwise, enter step 305.
Step 304: more carrier resource is selected in base station from other path loss measurement group, to meet the demand of UE.
Step 305: the carrier resource of selecting for UE from path loss measurement group is determined in base station.
Step 306: the path loss measurement feedback that represents whole carrier waves that each path loss measurement group at selecteed component carrier place is had is to base station.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. be a method for user terminal UE distributing carrier wave resource, it is characterized in that, comprising:
According to the index condition of different component carriers, base station is divided into different path loss measurement groups by component carrier;
When base station is user terminal distributing carrier wave resource, in same path loss measurement group, be UE distributing carrier wave resource, the public path loss measured value of all carrier waves of UE feedback is to base station;
If described component carrier in same path loss measurement group can not meet the bandwidth demand of UE, the method also comprises: described base station is for UE selects carrier resource from a plurality of path loss measurement groups, and UE will feed back respectively a public path loss measured value to base station according to each path loss measurement group at selected component carrier place.
2. method according to claim 1, is characterized in that, described index condition comprises propagation conditions, and/or performance requirement.
3. method according to claim 2, is characterized in that, described propagation conditions comprises line-of-sight transmission or non line of sight transmission;
Described performance requirement comprises disturbance regime and/or speed and/or throughput.
4. be a device for user terminal distributing carrier wave resource, it is characterized in that, at least comprise module and distribution module are set, wherein,
Module is set, for according to the index condition of different component carriers, component carrier is divided into different path loss measurement groups;
Distribution module, while being used to user terminal distributing carrier wave resource, is user terminal distributing carrier wave resource in the same path loss measurement group in module is set; Also for receiving the public path loss measured value of all carrier waves being fed back by UE;
Described distribution module also for, from a plurality of (two or more) path loss measurement group, be that UE selects carrier resource; Also for receiving the public path loss measured value being fed back respectively according to each path loss measurement group at selected component carrier place by UE.
5. device according to claim 4, is characterized in that, described device is arranged in base station.
6. device according to claim 4, is characterized in that, described index condition comprises propagation conditions, and/or performance requirement, and described propagation conditions comprises line-of-sight transmission or non line of sight transmission; Described performance requirement comprises disturbance regime and/or speed and/or throughput.
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| CN102065455A (en) * | 2010-12-02 | 2011-05-18 | 中兴通讯股份有限公司 | Link loss composite measurement method and device for uplink power control in carrier aggregation |
| CN110461000B (en) * | 2019-04-29 | 2022-04-01 | 中国联合网络通信集团有限公司 | Method and device for predicting network capacity of 5G cell |
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| CN1469570A (en) * | 2002-07-20 | 2004-01-21 | 深圳市中兴通讯股份有限公司 | Multiple carrier load balancing method |
| CN101272371A (en) * | 2008-02-25 | 2008-09-24 | 上海瀚讯无线技术有限公司 | Frequency hopping transmission method based on DFT spread-spectrum generalized multi-carrier transmission system |
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| MY172741A (en) * | 2001-08-30 | 2019-12-11 | Ntt Docomo Inc | Radio transmission system and method, and transmitter apparatus and receiver apparatus used in the radio transmission system |
| WO2007038955A1 (en) * | 2005-09-30 | 2007-04-12 | Telecom Italia S.P.A. | Method for planning a cellular mobile telecommunications network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469570A (en) * | 2002-07-20 | 2004-01-21 | 深圳市中兴通讯股份有限公司 | Multiple carrier load balancing method |
| CN101272371A (en) * | 2008-02-25 | 2008-09-24 | 上海瀚讯无线技术有限公司 | Frequency hopping transmission method based on DFT spread-spectrum generalized multi-carrier transmission system |
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