CN102065455A - Link loss composite measurement method and device for uplink power control in carrier aggregation - Google Patents
Link loss composite measurement method and device for uplink power control in carrier aggregation Download PDFInfo
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- CN102065455A CN102065455A CN2010105703448A CN201010570344A CN102065455A CN 102065455 A CN102065455 A CN 102065455A CN 2010105703448 A CN2010105703448 A CN 2010105703448A CN 201010570344 A CN201010570344 A CN 201010570344A CN 102065455 A CN102065455 A CN 102065455A
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Abstract
The invention provides a link loss composite measurement method and a link loss composite measurement device for uplink power control in carrier aggregation. The link loss composite measurement method for the uplink power control in the carrier aggregation comprises the following steps of: dividing a plurality of different composition carriers into a plurality of link loss measurement groups according to the propagation conditions and the performance requirements of the different composition carriers; and when a base station distributes the composition carriers to a client, selecting the carriers in the same link loss measurement group, and feeding back a link loss measurement value shared by all the carriers to the base station by the client. Compared with the prior art, by setting the link loss measurement groups, the number of link loss measurement feedback values is reduced, and the overhead of a system is effectively reduced. Meanwhile, by division of the link loss measurement groups, the flexibility of dispatching the carrier resources by the station is improved.
Description
Technical field
The present invention relates to wireless communication technology field, more specifically, relate to the path loss combined measurement method and the device of up-link power control in the carrier aggregation.
Background technology
In follow-on broadband wireless communication network, solve and how under the bandwidth of current wireless communication system, to support bigger bandwidth to become a key factor that improves inter-cell user terminal throughput and user terminal average throughput in the cordless communication network 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 at present the carrier aggregation of discussing among the LTE-Advanced is not considered the influence of the presence of intercell interference that inter-cell user terminal throughput and user terminal average throughput are played an important role, if the carrier wave of polymerization partly is subjected to serious presence of intercell interference, so, even obtained bigger bandwidth, make also and can use the throughput and the rate capability of the user terminal of this partially polymerized carrier wave seriously to descend, thereby offset the benefit that carrier aggregation is brought because of serious presence of intercell interference.Therefore, need in carrier aggregation, carry out effective path loss and measure, reduce the interference of the carrier wave that uses in the carrier aggregation by measurement result.But how carrying out effective path loss measurement is the difficult problem that industry need be captured.
Summary of the invention
The objective of the invention is to propose the path loss combined measurement method and the device of up-link power control in a kind of carrier aggregation, so that the path loss of up-link power control in the carrier aggregation is more efficiently measured.
For achieving the above object, the present invention proposes the path loss combined measurement method of up-link power control in a kind of carrier aggregation, it comprises: to a plurality of different composition carrier waves, to form carrier wave according to the propagation conditions of different composition carrier waves and performance requirement and be divided into a plurality of path loss measurement groups, when the base station is user side distribution composition carrier wave, select the carrier wave in the same path loss measurement group, the public path loss measured value of all carrier waves of client feeds back is given the base station.
Further, if described carrier wave in same path loss measurement group does not satisfy the demand of user side, then the base station selects suitable carrier resource to give user side to satisfy bandwidth demand from a plurality of path loss measurement groups.
Further, be unit with path loss measurement group when described path loss is measured, public path loss measured value of each path loss measurement group feedback is given the base station.
Further, if described base station is the bandwidth demand that satisfies user side, each of selection formed the corresponding path loss measurement group of carrier wave, and then each forms path loss measured value of carrier wave feedback to the base station.
Further, described propagation conditions comprises line-of-sight transmission, non line of sight transmission, and described performance requirement comprises disturbance regime, speed, throughput.
In addition, the present invention also proposes the path loss duplex measurement device of up-link power control in a kind of carrier aggregation, and it is characterized in that: described device comprises threshold determination module, grouping module and feedback module;
Described threshold determination module is determined the division threshold value of path loss measurement group according to propagation conditions, performance requirement index;
Described grouping module is divided threshold value according to path loss measurement group all carrier resources is divided into groups;
Described feedback module is given the base station with the path loss measurement feedback that has the whole carrier waves of representative in each path loss measurement group.
Further, described propagation conditions comprises line-of-sight transmission, non line of sight transmission, and described performance requirement comprises disturbance regime, speed, throughput.
Further, described device also comprises judge module, described judge module judges whether carrier resource satisfies the demands, the proper carrier wave resource is at first selected, if carrier resource satisfies the demands according to the bandwidth and the performance requirement of user side in the base station from a path loss measurement group, then the carrier resource for the user side selection is determined from path loss measurement group in the base station, otherwise more carrier resource is selected in the base station from other path loss measurement group, to satisfy the demands.
Further, described device also comprises the selection module, and described selection module is selected more carrier resource from other path loss measurement group, to satisfy the demands.
Further, described device also comprises the carrier resource determination module, the definite carrier resource of selecting for user side from path loss measurement group of described carrier resource determination module.
Beneficial effect of the present invention: compared with prior art,, reduced the number of path loss measurement value of feedback, reduced overhead effectively by the setting of path loss measurement group.Simultaneously, the division of path loss measurement group improves the flexibility of base station when scheduling carrier wave resources.
Description of drawings
Fig. 1 is the path loss combined measurement method schematic flow sheet of up-link power control in the carrier aggregation of the present invention;
Fig. 2 is that the path loss duplex measurement device of up-link power control in the carrier aggregation of the present invention is formed schematic diagram.
Embodiment
Technical solution of the present invention is when carrier aggregation, to a plurality of different composition carrier waves, according to the propagation conditions of different composition carrier waves (such as, line-of-sight transmission, non line of sight transmission etc.), performance requirement (such as, disturbance regime, speed, throughput etc.) etc. will form carrier wave and be divided into a plurality of path loss measurement groups, as base station (Base Station, when BS) distributing the composition carrier wave for user side, at first select the carrier wave in the same path loss measurement group, at this moment, user side only feeds back a public path loss measured value of all carrier waves and gives the base station, if the carrier wave in same path loss measurement group does not satisfy the demand of user side, so, the base station selects suitable carrier resource to give user side to satisfy bandwidth demand from a plurality of path loss measurement groups, simultaneously, be unit with path loss measurement group when path loss is measured, public path loss measured value of each path loss measurement group feedback is given the base station, if the base station is the bandwidth demand that satisfies user side, each that select formed the corresponding path loss measurement group of carrier wave, so, each forms path loss measured value of carrier wave feedback to the base station.By the setting of path loss measurement group, reduced the number of path loss measurement value of feedback, reduced overhead effectively.Simultaneously, the division of path loss measurement group improves the flexibility of base station when scheduling carrier wave resources.
Below in conjunction with drawings and Examples technical solution of the present invention is done detailed description.
Please refer to shown in Figure 1ly, is the path loss combined measurement method schematic flow sheet of up-link power control in the carrier aggregation of the present invention, and it comprises the steps:
Step S101: the division threshold value of path loss measurement group is determined in the base station according to indexs such as propagation conditions, performance requirements;
Step S102: the base station is divided threshold value according to path loss measurement group all carrier resources is divided into groups;
According to the propagation conditions of different composition carrier waves (such as, line-of-sight transmission, non line of sight transmission etc.), performance requirement (such as, disturbance regime, speed, throughput etc.) etc. will form carrier wave and be divided into a plurality of path loss measurement groups.
Step S103: judge whether carrier resource satisfies the demands;
The proper carrier wave resource is at first selected according to the bandwidth and the performance requirement of user side in the base station from a path loss measurement group, if carrier resource satisfies the demands, then forward step S105 to, otherwise, forward step S104 to.
Step S104: more carrier resource is selected in the base station from other path loss measurement group, to satisfy the demands;
Step S105: the definite carrier resource of from path loss measurement group, selecting in base station for user side;
Step S106: have the path loss measured value of the whole carrier waves of representative in each path loss measurement group, and feed back to the base station.
Please refer to shown in Figure 2ly, is that the path loss duplex measurement device of up-link power control in the carrier aggregation of the present invention is formed schematic diagram, and it comprises threshold determination module, grouping module, judge module, selection module, carrier resource determination module and feedback module.
Described threshold determination module is determined the division threshold value of path loss measurement group according to indexs such as propagation conditions, performance requirements.
Described grouping module is divided threshold value according to path loss measurement group all carrier resources is divided into groups.
According to the propagation conditions of different composition carrier waves (such as, line-of-sight transmission, non line of sight transmission etc.), performance requirement (such as, disturbance regime, speed, throughput etc.) etc. will form carrier wave and be divided into a plurality of path loss measurement groups.
Described judge module judges whether carrier resource satisfies the demands.
The base station is according to the bandwidth and the performance requirement of user side, at first from a path loss measurement group, select the proper carrier wave resource, if carrier resource satisfies the demands, then the carrier resource for the user side selection is determined from path loss measurement group in the base station, otherwise, more carrier resource is selected in the base station from other path loss measurement group, to satisfy the demands.
Described selection module is selected more carrier resource from other path loss measurement group, to satisfy the demands.
The definite carrier resource of from path loss measurement group, selecting of described carrier resource determination module for user side.
Described feedback module is given the base station with the path loss measurement feedback that has the whole carrier waves of representative in each path loss measurement group.
By the setting of path loss measurement group, reduced the number of path loss measurement value of feedback, reduced overhead effectively.Simultaneously, the division of path loss measurement group improves the flexibility of base station (BS) when scheduling carrier wave resources.
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. the path loss combined measurement method of up-link power control in the carrier aggregation, it is characterized in that: to a plurality of different composition carrier waves, to form carrier wave according to the propagation conditions of different composition carrier waves and performance requirement and be divided into a plurality of path loss measurement groups, when the base station is user side distribution composition carrier wave, select the carrier wave in the same path loss measurement group, the public path loss measured value of all carrier waves of client feeds back is given the base station.
2. the method for claim 1 is characterized in that: if described carrier wave in same path loss measurement group does not satisfy the demand of user side, then the base station selects suitable carrier resource to give user side to satisfy bandwidth demand from a plurality of path loss measurement groups.
3. method as claimed in claim 2 is characterized in that: be unit with path loss measurement group when described path loss is measured, public path loss measured value of each path loss measurement group feedback is given the base station.
4. method as claimed in claim 2 is characterized in that: if described base station is the bandwidth demand that satisfies user side, each of selection formed the corresponding path loss measurement group of carrier wave, and then each forms path loss measured value of carrier wave feedback to the base station.
5. the method for claim 1 is characterized in that: described propagation conditions comprises line-of-sight transmission, non line of sight transmission, and described performance requirement comprises disturbance regime, speed, throughput.
6. the path loss duplex measurement device of up-link power control in the carrier aggregation, it is characterized in that: described device comprises threshold determination module, grouping module and feedback module;
Described threshold determination module is determined the division threshold value of path loss measurement group according to propagation conditions, performance requirement index;
Described grouping module is divided threshold value according to path loss measurement group all carrier resources is divided into groups;
Described feedback module is given the base station with the path loss measurement feedback that has the whole carrier waves of representative in each path loss measurement group.
7. device as claimed in claim 6 is characterized in that: described propagation conditions comprises line-of-sight transmission, non line of sight transmission, and described performance requirement comprises disturbance regime, speed, throughput.
8. device as claimed in claim 6, it is characterized in that: described device also comprises judge module, described judge module judges whether carrier resource satisfies the demands, the proper carrier wave resource is at first selected, if carrier resource satisfies the demands according to the bandwidth and the performance requirement of user side in the base station from a path loss measurement group, then the carrier resource for the user side selection is determined from path loss measurement group in the base station, otherwise more carrier resource is selected in the base station from other path loss measurement group, to satisfy the demands.
9. device as claimed in claim 6 is characterized in that: described device also comprises the selection module, and described selection module is selected more carrier resource from other path loss measurement group, to satisfy the demands.
10. device as claimed in claim 6 is characterized in that: described device also comprises the carrier resource determination module, the definite carrier resource of selecting for user side from path loss measurement group of described carrier resource determination module.
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| CN105264976A (en) * | 2014-05-09 | 2016-01-20 | 华为技术有限公司 | Method for controlling power of carrier signal, user equipment and base station |
| US9408163B2 (en) | 2011-08-30 | 2016-08-02 | Huawei Technologies Co., Ltd. | Power control method, activation management method, user equipment, and base station |
| CN111953468A (en) * | 2014-12-26 | 2020-11-17 | 北京三星通信技术研究有限公司 | Method and device for configuring uplink and downlink carriers |
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Application publication date: 20110518 |