CN102647770B - A kind of method of communication, equipment and base station - Google Patents
A kind of method of communication, equipment and base station Download PDFInfo
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Abstract
The invention discloses a kind of method of communication, equipment and base station, main contents to include：Receive PMI and interference parameter that terminal reports, according to the correspondence between PMI and interference threshold, judge whether the interference parameter that terminal reports is more than the corresponding interference thresholds of PMI reported, when the interference parameter is more than the corresponding interference threshold of the PMI that reports, determine that the channel that the PMI that terminal reports is determined is not suitable for current communication environment, and redefine the PMI that corresponding interference threshold is not less than interference parameter, and determining PMI is sent to terminal, instruction terminal is communicated using the PMI of the determination channels determined；It avoids base station and is disturbed larger problem when being communicated with terminal, improve the communication quality between base station and terminal.
Description
Technical Field
The present invention relates to wireless communication networks, and in particular, to a communication method, device and base station.
Background
With the development of wireless communication technology, in an LTE (Long Term Evolution) communication system, a communication process between a base station and a terminal is divided into two stages: the first phase is the reporting phase; the second phase is the signal transmission phase. The communication mode between the terminal and the base station in each stage specifically includes:
in the first stage, a terminal performs channel estimation on a downlink common channel for signal transmission, determines a PMI (Precoding Matrix Index) message representing the characteristics of the current channel, and transmits the PMI message to a base station by being carried in a measurement report.
The PMI message is obtained by selecting a precoding matrix by the terminal according to the measured signal quality of the base station side antenna, reporting the index of the precoding matrix to the base station as the PMI message, and precoding the transmission signal by the base station by using the precoding matrix corresponding to the received precoding matrix index to achieve the purpose of selecting the antenna for communication between the base station and the terminal.
And in the second stage, the base station determines a signal channel for signal transmission between the terminal and the base station according to the PMI message reported by the terminal, so as to realize communication between the base station and the terminal.
In the process of realizing communication between the base station and the terminal, the following defects exist:
firstly, the method comprises the following steps: the base station can not determine the interference information of the adjacent cell edge terminal adjacent to the terminal reporting the PMI message according to the PMI message reported by the terminal. With the increase of the number of the edge terminals of the neighboring cell, the interference signal generated by the edge terminal of the neighboring cell is continuously enhanced, and the quality of communication between the terminal reporting the PMI message and the base station is further affected, but since the PMI message reported by the terminal is reported after being measured for the communication of the terminal, interference information generated by the edge terminal of the neighboring cell to the terminal reporting the PMI message is not involved, and therefore the base station cannot predict the signal interference condition possibly suffered by the terminal reporting the PMI message when the terminal uses the signal channel determined by the PMI message for communication, a result of communication failure is likely to exist, that is, since the signal interference of the edge terminal of the neighboring cell exists, the signal channel determined by the PMI message currently reported by the terminal is not suitable for the communication between the current terminal and the base station.
Secondly, the method comprises the following steps: interference information is not easily eliminated after being generated. Due to the dynamic and spatial characteristics of signal interference, the generated interference information cannot be easily predicted by statistical measurement of interference levels, and it is difficult to eliminate the interference information. In the prior art, the communication between terminals in a base station may implement PMI message cooperation by the base station negotiating the PMI message required by each terminal, but for the communication between terminals in the base station, to implement PMI message cooperation, it is necessary to use a wired interface between base stations, such as X2, or a frequency division multiplexing manner, etc., so that the overhead of a communication network system is significantly increased.
Therefore, the problem that the interference is large when the communication is carried out between the base station and the terminal in the prior art is solved.
Disclosure of Invention
The embodiment of the invention provides a communication method, equipment and a base station, which are used for solving the problem of larger interference when the base station and a terminal are communicated in the prior art.
A method of communication, the method comprising:
receiving a precoding matrix index PMI and an interference parameter reported by a terminal;
judging whether the received interference parameter is larger than the interference threshold corresponding to the received PMI or not according to the corresponding relation between the PMI and the interference threshold;
if not, the channel determined by the received PMI is used for communicating with the terminal;
and if so, determining that the corresponding interference threshold is not smaller than the PMI of the interference parameter, sending the determined PMI to the terminal, and indicating the terminal to communicate by using the channel determined by the determined PMI.
A communication device, the device comprising:
the receiving module is used for receiving the precoding matrix index PMI and the interference parameters reported by the terminal;
the judging module is used for judging whether the received interference parameters are larger than the interference threshold corresponding to the received PMI or not according to the corresponding relation between the PMI and the interference threshold;
the result execution module is used for communicating with the terminal by using the channel determined by the received PMI when the judgment module determines that the result is negative; or
And when the judgment module determines that the interference threshold is not smaller than the PMI of the interference parameter, the corresponding PMI is determined, the determined PMI is sent to the terminal, and the terminal is instructed to communicate by using the channel determined by the determined PMI.
A base station includes the above communication apparatus.
The method comprises the steps of receiving a PMI and an interference parameter reported by a terminal, judging whether the interference parameter reported by the terminal is larger than an interference threshold corresponding to the reported PMI or not according to the corresponding relation between the PMI and the interference threshold, determining that a channel determined by the PMI reported by the terminal is not suitable for a current communication environment when the interference parameter is larger than the interference threshold corresponding to the reported PMI, re-determining that the corresponding interference threshold is not smaller than the PMI of the interference parameter, sending the determined PMI to the terminal, and indicating the terminal to communicate by using the channel determined by the determined PMI; the problem that the base station is greatly interfered by the terminal during communication is solved, and the communication quality between the base station and the terminal is improved.
Drawings
Fig. 1 is a flowchart of a communication method according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a communication method according to a second embodiment;
fig. 3 is a schematic structural diagram of a communication device according to a third embodiment;
fig. 4 is a schematic structural diagram of a base station in the fourth embodiment.
Detailed Description
In order to achieve the object of the present invention, embodiments of the present invention provide a communication method, device, and base station, where a PMI and an interference parameter reported by a terminal are received, according to a correspondence between the PMI and the interference threshold, it is determined whether the interference parameter reported by the terminal is greater than an interference threshold corresponding to the reported PMI, and when the interference parameter is greater than the interference threshold corresponding to the reported PMI, a channel determined by the PMI reported by the terminal is determined to be unsuitable for a current communication environment, and the corresponding interference threshold is determined to be not less than the PMI of the interference parameter, and the determined PMI is sent to the terminal, so as to instruct the terminal to perform communication using the channel determined by the determined PMI.
Compared with the prior art, in the reporting stage of communication, the interference condition of the terminal is considered, and a new channel determined by the PMI is allocated to the terminal according to the severity of the interference, so that the problem of high interference when the base station and the terminal are in communication is avoided, and the communication quality between the base station and the terminal is improved.
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, it is a flowchart of a communication method in the first embodiment, where the method includes:
step 101: and receiving the PMI and the interference parameter reported by the terminal.
And the received PMI is determined by the terminal measuring the downlink channel according to the pilot signal.
In step 101, the terminal measures interference information of the terminal between the serving cell and the neighboring cell, determines the interference condition of the terminal, and reports the interference condition to the base station in the form of interference parameters.
Meanwhile, the terminal measures the downlink common channel according to the pilot signal issued by the base station, and reports the processed result to the base station as the PMI by combining with a processing algorithm stored by the terminal.
The PMI includes the number of data layers that can be supported by the lower link, index information of the precoding matrix, and the like.
Step 102: judging whether the received interference parameter is larger than the interference threshold corresponding to the received PMI or not according to the corresponding relation between the PMI and the interference threshold, and if not, executing the step 103; otherwise step 104 is performed.
In step 102, the corresponding relationship between the PMI and the interference threshold may be stored locally in the base station in advance, or the corresponding relationship between the PMI and the interference level and the corresponding relationship between the interference level and the interference threshold may be stored locally in the base station.
Specifically, it is determined whether the received interference parameter is greater than an interference threshold corresponding to the received PMI, where the method includes:
the first step is as follows: determining an interference threshold corresponding to the received PMI according to the corresponding relation between the PMI and the interference threshold;
specifically, if the corresponding relationship between the PMI and the interference level and the corresponding relationship between the interference level and the interference threshold are locally stored in the base station, determining the interference level received by the terminal corresponding to the received PMI according to the corresponding relationship between the PMI and the interference level; and determining the interference threshold corresponding to the determined interference level according to the corresponding relation between the interference level and the interference threshold.
The second step is that: comparing a magnitude relationship between the received interference parameter and the determined interference threshold.
Step 103: and when the received interference parameter is not greater than the interference threshold corresponding to the received PMI, communicating with the terminal by using the channel determined by the received PMI.
In step 103, when the comparison result between the received interference parameter and the interference threshold corresponding to the received PMI is that the former is not greater than the latter, it is determined that a channel determined by the PMI reported by the terminal is suitable for communication between the base station and the terminal, that is, the situation that the interference received during the communication process is large when the channel determined by the PMI is used for communication between the base station and the terminal does not occur, and the communication quality between the base station and the terminal can be ensured, so that the base station and the terminal communicate with each other by using the channel determined by the PMI.
Step 104: and determining the PMI of which the corresponding interference threshold is not less than the interference parameter, sending the determined PMI to the terminal, and indicating the terminal to communicate by using the channel determined by the determined PMI.
In step 104, when the comparison result between the received interference parameter and the interference threshold corresponding to the received PMI is that the former is greater than the latter, it is determined that the channel determined by the PMI reported by the terminal is not suitable for the communication between the base station and the terminal, that is, the situation that the interference received during the communication process is large may occur when the channel determined by the PMI is used for the communication between the base station and the terminal, and the communication quality between the base station and the terminal cannot be ensured, so that the base station needs to reallocate a new PMI to the terminal.
Specifically, the method for reallocating the new PMI to the terminal by the base station includes:
the first step is as follows: and determining an interference threshold not less than the interference parameter reported by the terminal.
Preferably, an interference threshold value identical to the interference parameter reported by the terminal is determined.
A second step; and determining the PMI corresponding to the interference threshold according to the relation between the PMI stored locally and the interference threshold.
According to the scheme of the embodiment, the PMI and the interference parameter reported by the terminal are received, whether the interference parameter reported by the terminal is larger than the interference threshold corresponding to the reported PMI or not is judged according to the corresponding relation between the PMI and the interference threshold, when the interference parameter is larger than the interference threshold corresponding to the reported PMI, the channel determined by the PMI reported by the terminal is determined to be not suitable for the current communication environment, the corresponding interference threshold is determined to be not smaller than the PMI of the interference parameter again, the determined PMI is sent to the terminal, the terminal is instructed to communicate by using the channel determined by the determined PMI, the problem that the base station and the terminal are greatly interfered when communicating is solved, and the communication quality between the base station and the terminal is improved.
Example two:
fig. 2 is a schematic flow chart of a communication method according to the second embodiment. The second embodiment is a detailed description of each step of the first embodiment, and the method includes:
step 201: and in a report phase period of the communication process, receiving a PMI and a plurality of interference parameters reported by a terminal.
In this step 201, the communication process between the base station and the terminal is divided into two phases, one phase is a reporting phase or a negotiation phase; the other phase is the transmit phase, otherwise known as the signal transmission phase. Generally, the communication procedure between the base station and the terminal may be divided into periods.
The plurality of interference parameters refers to at least one interference parameter.
In a report stage period, a terminal measures a downlink common channel according to a pilot signal issued by a base station, and determines a PMI to report to the base station; the base station needs to determine whether the reported PMI is suitable for communication between the base station and the terminal, and can require the terminal to report a plurality of interference parameters in a reporting phase period; or the terminal collects a plurality of interference parameters at different times and reports the determined PMI to the base station in a reporting phase period.
Step 202: and determining an interference threshold corresponding to the received PMI according to the corresponding relation between the PMI and the interference threshold.
Wherein, the interference threshold corresponding to the PMI is a set of values representing intervals.
In step 202, the base station determines an interference level corresponding to the received PMI according to a correspondence between the PMI and the interference level; and determining an interference threshold corresponding to the interference level, namely the interference threshold corresponding to the received PMI, according to the corresponding relation between the interference level and the interference threshold.
Step 203: sequentially judging whether each received interference parameter is greater than a determined interference threshold value, and executing the step 204 when the number of the interference parameters greater than the determined interference threshold value is greater than the threshold value; otherwise, step 205 is performed.
The threshold value is N, where N is a positive integer, and the size of N is determined according to actual needs, and is not specifically limited here.
In step 203, since the terminal collects a plurality of interference parameters at different times of the reporting phase in step 201, each collected interference parameter is compared with the determined interference threshold.
Specifically, when each interference parameter is compared with a determined interference threshold value for each terminal, it is determined whether the received interference parameter is greater than a maximum value in an interference threshold value interval corresponding to the received PMI; or, judging whether the received interference parameter is larger than the minimum value in the interference threshold interval corresponding to the received PMI; or, judging whether the received interference parameter is greater than a certain numerical value in an interference threshold interval corresponding to the received PMI, and recording the times that the interference parameter is greater than the determined interference threshold.
Step 204: when the number of the interference parameters greater than the determined interference threshold is greater than the threshold, it is determined that the received interference parameters are greater than the interference threshold corresponding to the received PMI, and step 206 is performed.
In step 204, since the number of the interference parameters greater than the determined interference threshold is greater than the threshold, it indicates that the interference situation suffered by the terminal is severe in the report phase period, and the PMI selected by the terminal is not suitable for the communication between the base station and the terminal.
Step 205: when the number of the interference parameters greater than the determined interference threshold is not greater than the threshold, it is determined that the received interference parameters are not greater than the interference threshold corresponding to the received PMI, and step 210 is executed.
In step 205, since the number of the interference parameters greater than the determined interference threshold is not greater than the threshold, it indicates that the interference situation suffered by the terminal is relatively slight in the reporting phase period, and the PMI selected by the terminal may be suitable for communication between the base station and the terminal.
Step 206: and determining that the corresponding interference threshold is not less than the PMI of the interference parameter.
In step 206, according to the corresponding relationship between the PMI and the interference level and the corresponding relationship between the interference level and the interference threshold, it is determined that the corresponding interference threshold is not less than the PMI of the interference parameter.
Step 207: judging whether the number of interfered terminals in the terminals reporting the same PMI and interference parameters reaches a set threshold value, if so, executing a step 208; otherwise, step 209 is performed.
The interfered terminal refers to a terminal with reported interference parameters larger than an interference threshold corresponding to the reported PMI.
In step 207, when it is determined that the number of interfered terminals in the terminals reporting the same PMI and interference parameters reaches the set threshold, the PMI policy of the interfered terminals may be switched in an overall switching manner, so that communication resources may be saved.
Step 208: when the number of interfered terminals reaches a set threshold value, PMIs meeting the requirements of interference parameters of all terminals are sent to all terminals reporting the same PMIs and the same interference parameters, a set period T is set, the terminals are indicated to report the interference parameters in the T, and when the reported interference parameters are not larger than the interference threshold value corresponding to the PMI sent to the terminals, a channel determined by the determined PMI is used for communication.
The set threshold may be determined according to the current operating state of the base station, or may be set according to actual experience, and the size of the specific set threshold is not limited.
In step 208, when the base station determines that the number of interfered terminals reaches the set threshold, it indicates that the terminals currently reporting the same PMI are interfered more severely, and allocates PMIs corresponding to interference parameters of each terminal and a set period T to the terminals reporting the same PMI according to different interference parameters.
The PMI meeting the requirement of the interference parameters of each terminal is a PMI which determines that the corresponding interference threshold is not less than the interference parameters according to the corresponding relation between the PMI and the interference threshold.
When a PMI is assigned to a terminal, the same PMI may be assigned to different terminals, and the assignment result is not particularly limited as long as the requirement of the interference parameter of each terminal is satisfied.
The base station allocates PMI for the terminal and allocates a set period T for different terminals, wherein T may be the same or different, and aims to verify whether the PMI allocated to the terminal by the base station is suitable for communication between the base station and the terminal, and the specific method comprises the following steps:
the first step is as follows: and indicating the terminal to report the M interference parameters in the T period.
The set period T is determined according to the communication requirement, and the length of the period T is not particularly limited.
And M is a positive integer and represents the number of interference parameters acquired by the terminal in the T period.
Specifically, the terminal divides the T period into M time periods, and acquires interference received by the terminal in each time period as an interference parameter when the time period reaches.
The second step is that: and determining an interference threshold corresponding to the allocated PMI according to the corresponding relation between the allocated PMI and the interference threshold.
The third step: sequentially judging whether the interference parameters reported in the T period are larger than a determined interference threshold value, and continuing to execute the step 204 when the number of the interference parameters larger than the determined interference threshold value is larger than the threshold value; otherwise, the channel determined by the determined PMI is utilized for communication.
Step 209: and when the number of the interfered terminals does not reach the set threshold, sending the determined PMI and a set period T to the interfered terminals, indicating the interfered terminals to report interference parameters in the T, and when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the interfered terminals, utilizing the determined channel determined by the determined PMI to carry out communication.
In step 209, when the base station determines that the number of the interfered terminals does not reach the set threshold, it indicates that all terminals currently reporting the same PMI are not particularly interfered, and only needs to allocate the determined PMI and the set period T to the interfered terminals; the subsequent operations are the same as step 208 and will not be described.
The difference from step 208 is that in step 209, the adjustment of the PMI of the individual interfered terminal is implemented.
Step 210: and communicating with the terminal by using the channel determined by the received PMI.
Example three:
as shown in fig. 3, which is a schematic structural diagram of a communication device in a third embodiment, the device includes: a receiving module 31, a judging module 32 and a result executing module 33, wherein:
a receiving module 31, configured to receive a precoding matrix index PMI and an interference parameter reported by a terminal;
a determining module 32, configured to determine whether the received interference parameter is greater than an interference threshold corresponding to the received PMI according to a correspondence between the PMI and the interference threshold;
a result executing module 33, configured to communicate with the terminal using the channel determined by the received PMI when the determination result of the determining module is negative; or
And when the judgment module determines that the interference threshold is not smaller than the PMI of the interference parameter, the corresponding PMI is determined, the determined PMI is sent to the terminal, and the terminal is instructed to communicate by using the channel determined by the determined PMI.
Specifically, the receiving module 31 is specifically configured to receive, in a reporting phase period of a communication process, one PMI and a plurality of interference parameters reported by a terminal;
the determining module 32 specifically includes an interference threshold determining subunit 321, a comparing subunit 322, and a determination result subunit 323, where:
an interference threshold determining subunit 321, configured to determine, according to a correspondence between the PMI and the interference threshold, an interference threshold corresponding to the received PMI;
a comparing subunit 322, configured to sequentially determine whether each received interference parameter is greater than a determined interference threshold;
a determining result subunit 323, configured to determine that the received interference parameter is greater than the interference threshold corresponding to the received PMI when the number of the interference parameters greater than the determined interference threshold is greater than the threshold; otherwise, determining that the received interference parameter is not greater than the interference threshold corresponding to the received PMI.
The result execution module 33 further includes a quantity judgment subunit 331, where:
a quantity judgment subunit 331, configured to judge, before sending the determined PMI to the terminal, whether the quantity of interfered terminals in terminals reporting the same PMI and interference parameters reaches a set threshold, where an interfered terminal is a terminal whose reported interference parameters are greater than an interference threshold corresponding to the reported PMI;
the result execution module 33 is specifically configured to send PMIs and a set period T that satisfy the requirement of interference parameters of each terminal to all terminals that report the same PMI and interference parameters when the number of interfered terminals reaches a set threshold, instruct the terminals to report the interference parameters in the T, and communicate using a channel determined by the determined PMI when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the terminal; or,
and when the number of the interfered terminals does not reach the set threshold, sending the determined PMI and a set period T to the interfered terminals, indicating the interfered terminals to report interference parameters in the T, and when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the interfered terminals, utilizing the determined channel determined by the determined PMI to carry out communication.
Example four:
as shown in fig. 4, which is a schematic structural diagram of a base station in the fourth embodiment, the base station includes: a communication device 41, wherein:
the communication device 41 is configured to receive a precoding matrix index PMI and an interference parameter reported by a terminal, determine whether the received interference parameter is greater than an interference threshold corresponding to the received PMI according to a correspondence between the PMI and the interference threshold, if not, communicate with the terminal using a channel determined by the PMI, if so, determine that the corresponding interference threshold is not less than the PMI of the interference parameter, and send the determined PMI to the terminal, so as to instruct the terminal to communicate using the channel determined by the determined PMI;
specifically, the communication device 41 is specifically configured to receive, in a report phase cycle of a communication process, a PMI and a plurality of interference parameters reported by a terminal, determine an interference threshold corresponding to the received PMI according to a correspondence between the PMI and the interference threshold, and sequentially determine whether each received interference parameter is greater than the determined interference threshold;
when the number of the interference parameters larger than the determined interference threshold is larger than the threshold, determining that the received interference parameters are larger than the interference threshold corresponding to the received PMI; otherwise, determining that the received interference parameter is not greater than the interference threshold corresponding to the received PMI.
The communication device 41 is further configured to determine, before sending the determined PMI to the terminal, whether the number of interfered terminals in the terminals reporting the same PMI and interference parameters reaches a set threshold, where the interfered terminals refer to terminals whose reported interference parameters are greater than an interference threshold corresponding to the reported PMI.
The communication device 41 is specifically configured to, when the number of interfered terminals reaches a set threshold, send PMIs and a set period T that satisfy the requirements of interference parameters of each terminal to all terminals that report the same PMI and interference parameters, instruct the terminals to report the interference parameters in the T, and perform communication using a channel determined by the determined PMI when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the terminals; or,
and when the number of the interfered terminals does not reach the set threshold, sending the determined PMI and a set period T to the interfered terminals, indicating the interfered terminals to report interference parameters in the T, and when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the interfered terminals, utilizing the determined channel determined by the determined PMI to carry out communication.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method of communication, the method comprising:
receiving a precoding matrix index PMI and an interference parameter reported by a terminal;
judging whether the received interference parameter is larger than the interference threshold corresponding to the received PMI or not according to the corresponding relation between the PMI and the interference threshold;
if not, the channel determined by the received PMI is used for communicating with the terminal;
if so, determining that the corresponding interference threshold is not smaller than the PMI of the interference parameter, sending the determined PMI to the terminal, and indicating the terminal to communicate by using a channel determined by the determined PMI;
wherein, the interference threshold corresponding to the PMI is a set of values representing intervals;
judging whether the received interference parameter is greater than an interference threshold corresponding to the received PMI, specifically including: judging whether the received interference parameter is larger than the maximum value in the interference threshold interval corresponding to the received PMI; or, judging whether the received interference parameter is larger than the minimum value in the interference threshold interval corresponding to the received PMI.
2. The method of claim 1, wherein receiving the PMI and the interference parameter reported by the terminal specifically includes:
receiving a PMI and a plurality of interference parameters reported by a terminal in a report phase period of a communication process;
according to the corresponding relationship between the PMI and the interference threshold, judging whether the received interference parameter is greater than the interference threshold corresponding to the received PMI, specifically including:
determining an interference threshold corresponding to the received PMI according to the corresponding relation between the PMI and the interference threshold;
sequentially judging whether each received interference parameter is larger than a determined interference threshold value;
when the number of the interference parameters larger than the determined interference threshold is larger than the threshold, determining that the received interference parameters are larger than the interference threshold corresponding to the received PMI; otherwise, determining that the received interference parameter is not greater than the interference threshold corresponding to the received PMI.
3. The method of claim 1, wherein prior to sending the determined PMI to the terminal, the method further comprises:
judging whether the number of interfered terminals in terminals reporting interference parameters and the same PMI reaches a set threshold value or not, wherein the interfered terminals refer to terminals of which the reported interference parameters are greater than the interference threshold value corresponding to the reported PMI;
sending the determined PMI to the terminal specifically includes:
when the number of interfered terminals reaches a set threshold value, sending PMIs meeting the requirements of interference parameters of all terminals and a set period T to all terminals reporting the interference parameters and the same PMI, indicating the terminals to report the interference parameters in the T, and when the reported interference parameters are not more than the interference threshold value corresponding to the PMI sent to the terminals, utilizing a channel determined by the determined PMI to carry out communication;
and when the number of the interfered terminals does not reach the set threshold, sending the determined PMI and a set period T to the interfered terminals, indicating the interfered terminals to report interference parameters in the T, and when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the interfered terminals, utilizing the determined channel determined by the determined PMI to carry out communication.
4. The method of claim 1, wherein the PMI reported by the terminal is determined by the terminal through measurement of a downlink channel according to a pilot signal.
5. A communication device, characterized in that the device comprises:
the receiving module is used for receiving the precoding matrix index PMI and the interference parameters reported by the terminal;
the judging module is used for judging whether the received interference parameters are larger than the interference threshold corresponding to the received PMI or not according to the corresponding relation between the PMI and the interference threshold;
the result execution module is used for communicating with the terminal by using the channel determined by the received PMI when the judgment module determines that the result is negative; or
And when the judgment module determines that the interference threshold is not smaller than the PMI of the interference parameter, the corresponding PMI is determined, the determined PMI is sent to the terminal, and the terminal is instructed to communicate by using the channel determined by the determined PMI.
6. The apparatus of claim 5,
the receiving module is specifically configured to receive a PMI and a plurality of interference parameters reported by a terminal in a reporting phase period of a communication process;
the judging module specifically includes:
the interference threshold determining subunit is configured to determine, according to a correspondence between the PMI and the interference threshold, an interference threshold corresponding to the received PMI;
a comparing subunit, configured to sequentially determine whether each received interference parameter is greater than a determined interference threshold;
a determining result subunit, configured to determine that the received interference parameter is greater than the interference threshold corresponding to the received PMI when the number of the interference parameters greater than the determined interference threshold is greater than the threshold; otherwise, determining that the received interference parameter is not greater than the interference threshold corresponding to the received PMI.
7. The apparatus of claim 5, wherein the result execution module further comprises:
the number judgment subunit is configured to judge whether the number of interfered terminals in a terminal reporting the same PMI and interference parameters reaches a set threshold before sending the determined PMI to the terminal, where the interfered terminal is a terminal whose reported interference parameters are greater than an interference threshold corresponding to the reported PMI;
the result execution module is specifically used for sending PMIs meeting the requirements of interference parameters of all terminals to report the same PMIs and interference parameters and a set period T to all terminals when the number of interfered terminals reaches a set threshold, indicating the terminals to report the interference parameters in the T, and utilizing a channel determined by the determined PMIs to carry out communication when the reported interference parameters are not greater than the interference threshold corresponding to the PMIs sent to the terminals; or,
and when the number of the interfered terminals does not reach the set threshold, sending the determined PMI and a set period T to the interfered terminals, indicating the interfered terminals to report interference parameters in the T, and when the reported interference parameters are not greater than the interference threshold corresponding to the PMI sent to the interfered terminals, utilizing the determined channel determined by the determined PMI to carry out communication.
8. A base station comprising the apparatus of any of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210137880.8A CN102647770B (en) | 2012-05-07 | 2012-05-07 | A kind of method of communication, equipment and base station |
Applications Claiming Priority (1)
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| CN101911539A (en) * | 2007-12-31 | 2010-12-08 | Lg电子株式会社 | Method for reducing inter-cell interference |
| WO2011013965A2 (en) * | 2009-07-27 | 2011-02-03 | Samsung Electronics Co., Ltd. | Downlink pmi coordination based on base station antenna configuration |
| CN102077494A (en) * | 2008-06-25 | 2011-05-25 | 三星电子株式会社 | Downlink wireless transmission schemes with inter-cell interference mitigation |
| CN102077637A (en) * | 2008-06-25 | 2011-05-25 | 三星电子株式会社 | Inter-cell interference avoidance for downlink transmission |
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| US8615198B2 (en) * | 2009-08-27 | 2013-12-24 | Samsung Electronics Co., Ltd. | Method and apparatus for triggering multicell MIMO schemes in multiple antenna system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911539A (en) * | 2007-12-31 | 2010-12-08 | Lg电子株式会社 | Method for reducing inter-cell interference |
| CN102077494A (en) * | 2008-06-25 | 2011-05-25 | 三星电子株式会社 | Downlink wireless transmission schemes with inter-cell interference mitigation |
| CN102077637A (en) * | 2008-06-25 | 2011-05-25 | 三星电子株式会社 | Inter-cell interference avoidance for downlink transmission |
| WO2011013965A2 (en) * | 2009-07-27 | 2011-02-03 | Samsung Electronics Co., Ltd. | Downlink pmi coordination based on base station antenna configuration |
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