CN101841819A - Dispatching method for reducing interference of PDCCH of a plurality of small areas of LTE system and device - Google Patents
Dispatching method for reducing interference of PDCCH of a plurality of small areas of LTE system and device Download PDFInfo
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- CN101841819A CN101841819A CN201010170846A CN201010170846A CN101841819A CN 101841819 A CN101841819 A CN 101841819A CN 201010170846 A CN201010170846 A CN 201010170846A CN 201010170846 A CN201010170846 A CN 201010170846A CN 101841819 A CN101841819 A CN 101841819A
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Abstract
The invention relates to a dispatching method for reducing the interference of PDCCH of a plurality of small areas of an LTE system and a device. The method comprises the following steps of: 1: averagely dividing a time-frequency resource for transmitting the PDCCH into N time-frequency resource sets in preset downward subframes; and 2. distributing respective time-frequency resource set to the plurality of small areas, wherein the plurality of small areas have identification numbers which are respectively different and are continuous positive integers, the identification number in any one of the small area is supposed to be M, t=Mmod N, the mod is mould taking computation, and the PDCCH of all users of the small area is transmitted with the time-frequency resource in a t time-frequency resource set. By distributing the transmission of the PDCCH in some downward subframs of each small area into the different time-frequency resources, the invention obviously reduces the PDCCH of an edge user due to interference, guarantees the performance of the edge user, and further improves the reliability of the transmission of the PDCCH of the user in a region with serious same-frequency interference.
Description
Technical field
The present invention relates to mobile communication LTE field, particularly relate to dispatching method and device that a kind of LTE of reduction a plurality of sub-district PDCCH of system disturb.
Background technology
For LTE (Long Term Evolution, Long Term Evolution) (EUTRA (the UMTS land wireless access of evolution)) system, the PDCCH of each sub-district (Physical Down control channel, downlink physical control channel) uses identical running time-frequency resource to carry out data and sends.User at cell edge can be subjected to bigger co-channel interference at PDCCH.Descendingly can carry out identical networking smoothly and guarantee the system spectrum utilance for making, standard code 4 kinds of CCE (Control Channel Element, the control channel unit) size is carried out the PDCCH transmission, promptly be respectively and use 8,4,2,1 CCE to transmit, wherein maximum can be carried out the transmission of a PDCCH with 8 CCE.But in the bigger zone of co-channel interference, the transmission of 8 CCE can not ensure the correct demodulation of user PDCCH fully.
Therefore, need a kind of dispatching method and device that can effectively reduce a plurality of sub-district PDCCH interference of LTE system.
Summary of the invention
At defective that exists in the prior art and deficiency, the objective of the invention is to propose a kind of dispatching method and device, can effectively reduce the interference of a plurality of sub-district PDCCH of LTE system.
In order to achieve the above object, the present invention proposes the dispatching method that a kind of LTE of reduction a plurality of sub-district PDCCH of system disturb, and comprising:
Step 1: in predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, and wherein, N is the positive integer more than or equal to 1;
Step 2: be the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
Preferred as technique scheme, the frequency of occurrences of described predetermined descending sub frame is the default time interval or time interval combination.
Preferred as technique scheme when can't the mean allocation running time-frequency resource in the described step 1, be given one or more sub-districts with remaining running time-frequency resource Random assignment.
A kind of dispatching device that reduces a plurality of sub-district PDCCH interference of LTE system comprises:
Distribute the running time-frequency resource module, be used at predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, and wherein, N is the positive integer more than or equal to 1;
Distribute the running time-frequency resource collection modules, be used to the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
Preferred as technique scheme also comprises presetting module, is used for the frequency of occurrences of default described predetermined descending sub frame, and the described frequency of occurrences is the default time interval or time interval combination.
Preferred as technique scheme in the time of can't the mean allocation running time-frequency resource in the described distribution running time-frequency resource module, be given one or more sub-districts with remaining running time-frequency resource Random assignment.
The dispatching method that the present invention proposes is assigned to different running time-frequency resources by the transmission with PDCCH in some descending sub frame of each sub-district and carries out, and the interference that makes the PDCCH of edge customer be subjected to obviously reduces, and has ensured the performance of edge customer.Further improved the serious regional user's of co-channel interference PDCCH transmission reliability.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.For the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the flow chart of the preferred embodiment of the management method of the M2M terminal equipment group of the present invention's proposition.
Embodiment
According to LTE agreement regulation, PDCCH is positioned at preceding 3 symbols of descending sub frame.A kind of dispatching method that reduces a plurality of sub-district PDCCH interference of LTE system that the present invention proposes as shown in Figure 1, comprising:
Step 1: in predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, that is to say, comprises the control channel unit of equal number in each running time-frequency resource set, and wherein, N is the positive integer more than or equal to 1;
Step 2: be the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
In the above-described embodiments, the frequency of occurrences of described predetermined descending sub frame is preset, and can be the default time interval or time interval combination.For example every 10ms occurs once, perhaps occurs repeatedly.
In addition, when can't the mean allocation running time-frequency resource in the described step 1, give one or more sub-districts with remaining running time-frequency resource Random assignment.
In the above-described embodiments, the value of N and the frequency of occurrences of predetermined descending sub frame can freely be set, to disturb the configuration of finding the best between the two in efficiency of transmission and reduction.
The dispatching method that the present invention proposes is assigned to different running time-frequency resources by the transmission with PDCCH in some descending sub frame of each sub-district and carries out, and the interference that makes the PDCCH of edge customer be subjected to obviously reduces, and has ensured the performance of edge customer.Further improved the serious regional user's of co-channel interference PDCCH transmission reliability.
Correspondingly, the present invention also proposes the dispatching device that a kind of LTE of reduction a plurality of sub-district PDCCH of system disturb, and comprising:
Distribute the running time-frequency resource module, be used at predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, comprises the control channel unit of equal number in each running time-frequency resource set, wherein, N is the positive integer more than or equal to 1;
Distribute the running time-frequency resource collection modules, be used to the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
Wherein, also comprise presetting module, be used for the frequency of occurrences of default described predetermined descending sub frame, the described frequency of occurrences is the default time interval or time interval combination.
When can't the mean allocation running time-frequency resource in the described distribution running time-frequency resource module, give one or more sub-districts with remaining running time-frequency resource Random assignment.
Though; the present invention clearly demonstrates by above embodiment and accompanying drawing thereof; yet under the situation that does not deviate from spirit of the present invention and essence thereof; the person of ordinary skill in the field works as can make various corresponding variations and correction according to the present invention, but these corresponding variations and correction all should belong to the protection range of claim of the present invention.
Claims (6)
1. one kind is reduced the dispatching method that a plurality of sub-district PDCCH of LTE system disturb, and it is characterized in that, comprising:
Step 1: in predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, and wherein, N is the positive integer more than or equal to 1;
Step 2: be the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
2. dispatching method according to claim 1 is characterized in that, the frequency of occurrences of described predetermined descending sub frame is the default time interval or time interval combination.
3. dispatching method according to claim 1 and 2 is characterized in that, when can't the mean allocation running time-frequency resource in the described step 1, gives one or more sub-districts with remaining running time-frequency resource Random assignment.
4. one kind is reduced the dispatching device that a plurality of sub-district PDCCH of LTE system disturb, and it is characterized in that, comprising:
Distribute the running time-frequency resource module, be used at predetermined descending sub frame, the running time-frequency resource that will be used for the PDCCH transmission is divided into N running time-frequency resource set, and wherein, N is the positive integer more than or equal to 1;
Distribute the running time-frequency resource collection modules, be used to the running time-frequency resource set separately of described a plurality of cell allocation, wherein, described a plurality of sub-districts have different separately and are the identification number of continuous positive integer, particularly:
Suppose that wherein the identification number of arbitrary sub-district is M, order:
T=M mod N, wherein mod is a modulo operation, stipulates that all users' of this sub-district PDCCH all uses t the running time-frequency resource transmission in the running time-frequency resource set.
5. dispatching device according to claim 4 is characterized in that, also comprises presetting module, is used for the frequency of occurrences of default described predetermined descending sub frame, and the described frequency of occurrences is the default time interval or time interval combination.
6. according to claim 4 or 5 described dispatching devices, it is characterized in that, in the time of can't the mean allocation running time-frequency resource in the described distribution running time-frequency resource module, give one or more sub-districts remaining running time-frequency resource Random assignment.
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| CN201010170846A CN101841819A (en) | 2010-05-06 | 2010-05-06 | Dispatching method for reducing interference of PDCCH of a plurality of small areas of LTE system and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055178A1 (en) * | 2010-10-28 | 2012-05-03 | 中兴通讯股份有限公司 | Method and apparatus for reducing co-existence interference between lte and ism of one equipment |
| CN102843694A (en) * | 2011-06-20 | 2012-12-26 | 普天信息技术研究院有限公司 | Control information sending method and device |
| WO2013071719A1 (en) * | 2011-11-15 | 2013-05-23 | 中兴通讯股份有限公司 | System, method and base station for coordinating power of downlink control channel |
| WO2014071615A1 (en) * | 2012-11-09 | 2014-05-15 | 华为技术有限公司 | Method and apparatus for information transmission |
| CN103858506A (en) * | 2012-12-27 | 2014-06-11 | 华为技术有限公司 | Method and device for resource allocation |
| TWI469548B (en) * | 2011-08-17 | 2015-01-11 | Alcatel Lucent | A method and apparatus for interference cancellation for enhanced downstream entity-specific control channels |
| CN105210398A (en) * | 2013-10-28 | 2015-12-30 | 华为技术有限公司 | Resource processing method and resource processing apparatus |
| CN108063654A (en) * | 2012-09-18 | 2018-05-22 | 华为技术有限公司 | Communication means and terminal, transfer point |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926786A (en) * | 2004-03-05 | 2007-03-07 | 三星电子株式会社 | Method and system for allocating frequency resources based on multiple frequency reuse factors in cellular communication systems |
| CN101179819A (en) * | 2006-09-30 | 2008-05-14 | 华为技术有限公司 | Sequence allocated method, system and device in multi-cell system |
| CN101388697A (en) * | 2007-09-10 | 2009-03-18 | 中兴通讯股份有限公司 | Method for randomizing neighborhood cell interference in OFDM system |
| WO2009099289A2 (en) * | 2008-02-04 | 2009-08-13 | Electronics And Telecommunications Research Institute | Interference mitigation method in cellular system based on orthogonal frequency division multiple access |
-
2010
- 2010-05-06 CN CN201010170846A patent/CN101841819A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926786A (en) * | 2004-03-05 | 2007-03-07 | 三星电子株式会社 | Method and system for allocating frequency resources based on multiple frequency reuse factors in cellular communication systems |
| CN101179819A (en) * | 2006-09-30 | 2008-05-14 | 华为技术有限公司 | Sequence allocated method, system and device in multi-cell system |
| CN101388697A (en) * | 2007-09-10 | 2009-03-18 | 中兴通讯股份有限公司 | Method for randomizing neighborhood cell interference in OFDM system |
| WO2009099289A2 (en) * | 2008-02-04 | 2009-08-13 | Electronics And Telecommunications Research Institute | Interference mitigation method in cellular system based on orthogonal frequency division multiple access |
Non-Patent Citations (1)
| Title |
|---|
| 《现代电信科技》 20100131 刘晓峰 LTE组网技术及测试浅析 61-64,72 1-6 , * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055178A1 (en) * | 2010-10-28 | 2012-05-03 | 中兴通讯股份有限公司 | Method and apparatus for reducing co-existence interference between lte and ism of one equipment |
| CN102843694B (en) * | 2011-06-20 | 2016-03-30 | 普天信息技术研究院有限公司 | A kind of sending method of control information and device |
| CN102843694A (en) * | 2011-06-20 | 2012-12-26 | 普天信息技术研究院有限公司 | Control information sending method and device |
| US10200141B2 (en) | 2011-08-17 | 2019-02-05 | Alcatel Lucent | Interference cancellation method and apparatus for enhanced physical downlink control channel |
| TWI469548B (en) * | 2011-08-17 | 2015-01-11 | Alcatel Lucent | A method and apparatus for interference cancellation for enhanced downstream entity-specific control channels |
| WO2013071719A1 (en) * | 2011-11-15 | 2013-05-23 | 中兴通讯股份有限公司 | System, method and base station for coordinating power of downlink control channel |
| CN108063654B (en) * | 2012-09-18 | 2023-06-16 | 北京禾怡管理咨询有限公司 | Communication method, terminal and transmission point |
| CN108063654A (en) * | 2012-09-18 | 2018-05-22 | 华为技术有限公司 | Communication means and terminal, transfer point |
| WO2014071615A1 (en) * | 2012-11-09 | 2014-05-15 | 华为技术有限公司 | Method and apparatus for information transmission |
| CN103975618B (en) * | 2012-11-09 | 2018-09-21 | 华为技术有限公司 | The method and apparatus for transmitting information |
| CN103975618A (en) * | 2012-11-09 | 2014-08-06 | 华为技术有限公司 | Method and apparatus for information transmission |
| CN103858506B (en) * | 2012-12-27 | 2017-08-18 | 华为技术有限公司 | Resource allocation methods and device |
| CN103858506A (en) * | 2012-12-27 | 2014-06-11 | 华为技术有限公司 | Method and device for resource allocation |
| CN105210398A (en) * | 2013-10-28 | 2015-12-30 | 华为技术有限公司 | Resource processing method and resource processing apparatus |
| CN105210398B (en) * | 2013-10-28 | 2019-10-18 | 华为技术有限公司 | Method for processing resource and resource processing unit |
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Application publication date: 20100922 |