CN107864493B - Method and device for coordinating interference between coexisting communication systems - Google Patents
Method and device for coordinating interference between coexisting communication systems Download PDFInfo
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Abstract
The invention discloses an interference coordination method and device between coexisting systems, which are used for reducing the interference between the systems on the premise of ensuring the capacity of each system. The method for coordinating the interference between the coexisting communication systems comprises the following steps: judging whether at least one of two coexisting communication systems has interference; if so, aiming at the interfered communication system with interference, gradually adjusting the transmitting power of the interference communication system causing the interference until the interfered communication system has no interference or reaches the lowest transmitting power of the interference communication system, or gradually adjusting the working frequency points of the interfered communication system until the interfered communication system has no interference or tries all the working frequency points of the interfered communication system.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for interference coordination between coexisting communication systems.
Background
The TD-LTE (Time Division Long Term Evolution) system Band40 is located at 2300-2400 MHz, and the WIFI (Wireless Fidelity) system working frequency range is 2400-2483.5 MHz. When the two systems work in the femtocell at the same time, the downlink of the TD-LTE system may interfere with the uplink of the WIFI system, and the downlink of the WIFI system may interfere with the uplink of the TD-LTE system, as shown in fig. 1.
At present, two technical schemes for avoiding the interference between the two different systems are provided, one is to add a radio frequency filter on an LTE path and a WIFI path, and select a narrower or wider filter according to a working frequency band to avoid the mutual interference between the two systems, so that the transmission power and the receiving sensitivity are sacrificed; another solution is to add a trigger device between two systems, and the uplink timeslot of one system only works on the uplink timeslot of the other system, thus sacrificing part of the system capacity.
Disclosure of Invention
The embodiment of the invention provides an interference coordination method and device between coexisting systems, which are used for reducing the interference between the systems on the premise of ensuring the capacity of each system.
The embodiment of the invention provides an interference coordination method between coexisting communication systems, which comprises the following steps:
judging whether at least one of two coexisting communication systems has interference;
if so, aiming at the interfered communication system with interference, gradually adjusting the transmitting power of the interference communication system causing the interference until the interfered communication system has no interference or reaches the lowest transmitting power of the interference communication system, or gradually adjusting the working frequency points of the interfered communication system until the interfered communication system has no interference or tries all the working frequency points of the interfered communication system.
The embodiment of the invention provides an interference coordination device between coexisting communication systems, which comprises:
a first judging unit, configured to judge whether interference exists in at least one of two coexisting communication systems;
and an interference coordination unit, configured to, when the determination result of the first determination unit is yes, gradually adjust, for an interfered communication system with interference, transmission power of the interfering communication system causing the interference until the interfered communication system has no interference or reaches a minimum transmission power of the interfering communication system, or gradually adjust working frequency points of the interfered communication system until the interfered communication system has no interference or all working frequency points of the interfered communication system are tried.
According to the interference coordination method and device between the coexisting communication systems provided by the embodiment of the invention, if at least one of the coexisting two communication systems has interference, the transmission power of the interference system is gradually adjusted until the interfered communication system does not have interference or the lowest transmission power of the interference communication system is reached, or the interference is reduced by adjusting the working frequency points of the interfered system until the interfered communication system does not have interference or all the working frequency points of the interfered communication system are tried, and because any one of the coexisting two systems does not need to be controlled to work, the capacity of the two communication systems is ensured while the interference is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of interference between an LTE system and a WIFI system in the prior art;
FIG. 2 is a block diagram of a coexisting communications system in accordance with an embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of a method for interference coordination between coexisting communication systems according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an interference coordination process in the presence of interference in the LTE system according to the embodiment of the present invention;
fig. 5 is a schematic diagram of an interference coordination process when interference exists in the WIFI system in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an interference coordination apparatus between coexisting communication systems according to an embodiment of the present invention.
Detailed Description
In order to reduce interference between coexisting communication systems on the premise of ensuring the capacity of the coexisting communication systems, embodiments of the present invention provide a method and an apparatus for interference coordination between coexisting communication systems.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
The working scene of the femtocell is generally a small-area such as a family or a shop of a market, and an LTE system of the femtocell needs to be synchronized with a macro coverage network. Therefore, the whole communication network is not influenced, and the WIFI system provides service for the WIFI users in the area. The two systems may work simultaneously, when the two systems work simultaneously, the downlink of the WIFI may cause interference to the uplink of the LTE, and the downlink of the LTE may cause interference to the uplink of the WIFI. Factors that affect interference between the two systems are transmit power, out-of-band spurs, equipment anti-blocking capability, and isolation between antennas.
In order to avoid mutual interference between the LTE system and the WIFI system, in the embodiment of the invention, two filters, a narrow-band filter and a wide-band filter are respectively arranged for the LTE system and the WIFI system, wherein the passband of the narrow-band filter of the LTE system is 2320MHZ-2370MHZ, and the passband of the wide-band filter is 2300MHZ-2400 MHZ. The passband of the narrow-band filter of the WIFI system is 2410MHZ-2483.5MHZ, and the passband of the wide-band filter is 2400MHZ-2483.5MHZ, wherein the start frequency and the end frequency of the narrow-band filter of the LTE system and the WIFI system can be adjusted according to actual needs, which is not limited in the embodiment of the present invention. The narrow-band filter and the wide-band filter are switched by a set switch, and when the switch is in an on state, the narrow-band filter works; when the switch is in the off state, the wideband filter operates.
In addition, in the embodiment of the present invention, two groups of antennas may be configured for the WIFI system, where a distance between one group of antennas and an LTE system antenna satisfies a preset distance threshold, that is, a certain isolation requirement is satisfied between the group of antennas and the LTE system antenna. Another group of antennas of the WIFI system may be disposed at a position with better radiation performance, and an LTE system antenna may be disposed at a corner of the femtocell device, which is not limited in the embodiment of the present invention. The WIFI system defaults to use a set of antennas located at a position with better radiation performance.
Fig. 2 is a schematic structural diagram of two communication systems coexisting in the embodiment of the present invention. The interference coordination device comprises an LTE system antenna 11, a first antenna 21 and a second antenna 22 of a WIFI system, an LTE filter 12 controlled by a switch and a WIFI filter 23 controlled by the switch, and further comprises an LTE RF (radio frequency) and a WIFI RF, an LTE baseband and a WIFI baseband, and the interference coordination device 31 is used for coordinating the interference between the two communication systems.
Based on this, an embodiment of the present invention provides a method for interference coordination between coexisting communication systems, as shown in fig. 3, which may include the following steps:
s31, judging whether at least one of the two coexisting communication systems has interference, if so, executing step S32, otherwise, ending the process.
For each communication system, whether the communication system has interference is respectively judged according to a method for judging the interference of the communication system in the prior art, the method comprises three conditions, for example, two coexisting communication systems are an LTE system and a WIFI system, one condition is that the LTE system has interference, namely, the WIFI system interferes with the LTE system, the other condition is that the WIFI system has interference, namely, the LTE system interferes with the WIFI system, and the other condition is that the LTE system and the WIFI system simultaneously have interference, namely, the LTE system and the WIFI system interfere with each other.
And S32, gradually adjusting the transmitting power of the interference communication system causing the interference aiming at the interfered communication system with the interference until the interfered communication system has no interference or reaches the lowest transmitting power of the interference communication system, or gradually adjusting the working frequency points of the interfered communication system until the interfered communication system has no interference or tries all the working frequency points of the interfered communication system.
In step S32, if there is still interference in the interfered communication system after trying all the operating frequency points of the interfered communication system or adjusting the transmission power of the interfering communication system to the lowest transmission power, the method provided in the embodiment of the present invention may further include the following steps: and opening a narrow-band filter aiming at the interfered communication system, and controlling the interfered communication system to work in a preset frequency band. Taking two coexisting communication systems as an LTE system and a WIFI system as an example, if after the narrow-band filter is turned on, interference still exists in the interfered system, in the embodiment of the present invention, the working antenna of the WIFI system may also be replaced by a group of antennas whose distance from the antenna of the LTE system satisfies a preset distance threshold.
If the interfered system still has interference after the working antenna of the WIFI system is replaced, the method provided by the embodiment of the present invention may further include the following steps: and controlling the downlink silence of the interference communication system in the uplink time slot of the interfered communication system.
In order to better understand the embodiment of the present invention, an implementation flow of the embodiment of the present invention is described below by taking a coexisting system as an LTE system and a WIFI system as examples, respectively, where a solution flow when interference exists between the LTE system and the WIFI system is different, and a flow for solving interference between the LTE system and the WIFI system is described below with reference to fig. 4 and 5, respectively.
As shown in fig. 4, a schematic diagram of an interference coordination process when interference exists in an LTE system may include the following steps:
s41, judging whether the LTE system has interference, if so, executing step S42, and if not, ending the process.
And S42, reducing the transmitting power of the WIFI system according to the preset step diameter.
S43, judging whether the LTE system has interference, if so, executing step S44, otherwise, ending the process.
During specific implementation, after the transmission power of the WIFI system is reduced each time, whether interference exists in the LTE system needs to be judged again, and if the interference does not exist in the LTE system, the process is ended.
And S44, judging whether the minimum transmitting power of the WIFI system is reached, if so, executing a step S45, otherwise, executing a step S42.
In step S44, if the transmission power of the WIFI system does not reach the preset minimum transmission power, the transmission power of the WIFI system is reduced again according to the preset step size on the basis of the occurrence power of the current WIFI system, and if the transmission power of the WIFI system reaches the preset minimum transmission power, it indicates that the occurrence power of the WIFI system cannot be reduced any more.
And S45, opening a narrow-band filter of the LTE system.
S46, judging whether the LTE system has interference, if so, executing step S47, otherwise, executing step S410.
And S47, replacing the working antenna of the WIFI system into a group of antennas of which the distance from the working antenna of the WIFI system to the antenna of the LTE system meets a preset distance threshold.
S48, judging whether the LTE system has interference, if so, executing step S49, otherwise, ending the process.
And S49, controlling the WIFI system to carry out downlink silence in the uplink time slot of the LTE system, and ending the process.
And S410, increasing the transmitting power of the WIFI system according to a preset step diameter.
S411, judging whether the LTE system has interference, if so, executing step S412, otherwise, executing step S413.
Step S412, the transmission power of the WIFI system is returned to the transmission power before the transmission power of the WIFI system is increased this time, and the process is ended.
And S413, judging whether the transmitting power of the WIFI system reaches the maximum transmitting power, if not, executing the step S410, and if so, ending the process.
As shown in fig. 5, an interference coordination flow diagram for a WIFI system with interference according to an embodiment of the present invention may include the following steps:
and S51, judging whether the WIFI system has interference, if so, executing a step S52, and if not, ending the process.
And S52, replacing the working frequency point of the WIFI system.
The working frequency points of the WIFI system are replaced according to a preset sequence, wherein the working frequency points of the WIFI system are replaced by a plurality of methods, for example, a 2.4GHz Wifi frequency band is taken as an example, the total number of the working frequency points is 14, and an initial frequency point is assumed to be channel 1), and the replacement method comprises but is not limited to the following steps:
the first method,
Sequentially increasing from adjacent frequency points, namely sequentially trying Channel1, Channel2 and Channel14 of … …;
the second method,
The frequency points are firstly added to the highest and then are sequentially reduced, namely Channel1, Channel14, Channel13 and Channel … … are sequentially tried;
the third method,
The bin is added to an intermediate value (e.g., in proportion to 0.618) and then sequentially backed off or incremented. Channel1, Channel9, Channel8, Channel … … Channel 2; channel1, channel9, channel10, channel … … channel 14.
It should be noted that after each frequency point is replaced, whether interference exists in the WIFI system needs to be judged again, if interference does not exist, the process is ended, and if interference still exists, the next attempt is performed again.
And S53, judging whether the WIFI system has interference, if so, executing a step S54, and if not, ending the process.
And S54, judging whether all working frequency points of the WIFI system are tried, if so, executing the step S55, and otherwise, executing the step S52.
And S55, turning on a narrow-band filter of the WIFI system.
And S56, judging whether the WIFI system has interference, if so, executing a step S57, and if not, executing a step S510.
And S57, replacing the working antenna of the WIFI system into a group of antennas of which the distance from the working antenna of the WIFI system to the antenna of the LTE system meets a preset distance threshold.
And S58, judging whether the WIFI system has interference, if so, executing a step S59, and if not, ending the process.
And S59, controlling the LTE system to carry out downlink silence in the uplink time slot of the WIFI system, and ending the process.
And S510, backing back the working frequency point of the WIFI system.
In specific implementation, there may be multiple methods for backing up the working frequency point of the WIFI system, and the method may be performed by performing an operation opposite to that performed when the working frequency point of the WIFI system is replaced, which is not described herein again.
And S511, judging whether the WIFI system has interference, if so, executing the step S512, and if not, executing the step S513.
And S512, adjusting the working frequency point of the WIFI system to be the working frequency point before the rollback.
If the interference exists in the WIFI system is judged in step S511, the working frequency point before the rollback is returned to the working frequency point which is judged to have no interference in the WIFI system for the last time.
And S513, judging whether the working frequency point of the WIFI system is returned to the initial working frequency point, if so, ending the process, and if not, executing the step S510.
It should be noted that, in specific implementation, it may be first determined whether interference exists in the LTE system and the WIFI system at the same time, and if so, an interference coordination process (i.e., the process shown in fig. 4) when interference exists in the LTE system is first performed, and then an interference coordination process (i.e., the process shown in fig. 5) when interference exists in the WIFI system is performed; if not, further judging whether the LTE system has interference, if so, executing an interference coordination process (namely the process shown in fig. 4) when the LTE system has interference, if not, further judging whether the WIFI system has interference, and if so, executing the interference coordination process (namely the process shown in fig. 5) when the WIFI system has interference.
According to the interference coordination method for the two coexisting communication systems, provided by the embodiment of the invention, if at least one of the two communication systems has interference, the transmitting power of the interference communication system causing the interference is gradually adjusted or the working frequency point of the interfered communication system is gradually adjusted to reduce the interference, rather than directly controlling the interference communication system not to work in the working period of the interfered communication system, so that the available capacity of the system is ensured while the interference is reduced; if the interference of the interfered system cannot be eliminated by reducing the transmitting power of the interfering communication system or adjusting the working frequency point of the interfered communication system, the narrow-band filter of the interfered system is opened again to work in a preset frequency band, if the interference still exists in the interfered system, the isolation between the antennas can be increased, and finally, if the interference still exists in the interfered system, the downlink silence of the interfering system is controlled in the uplink time slot of the interfered system.
Based on the same inventive concept, the embodiment of the present invention further provides an interference coordination apparatus between coexisting communication systems, and because the principles of the apparatus and the device for solving the problems are similar to the interference method between coexisting communication systems, the implementation of the apparatus may refer to the implementation of the method, and repeated details are omitted.
As shown in fig. 6, which is a schematic structural diagram of an interference apparatus between coexisting communication systems according to an embodiment of the present invention, the interference apparatus may include:
a first judging unit 61, configured to judge whether interference exists in at least one of two coexisting communication systems;
an interference coordination unit 62, configured to, when the determination result of the first determination unit 61 is yes, gradually adjust, for an interfered communication system with interference, transmission power of the interfering communication system causing the interference until the interfered communication system has no interference or reaches a minimum transmission power of the interfering communication system, or gradually adjust working frequency points of the interfered communication system until the interfered communication system has no interference or all working frequency points of the interfered communication system are tried.
Optionally, the apparatus for interfering between coexisting communication systems may further include:
the first control unit is configured to open a narrow-band filter for the interfered communication system and control the interfered communication system to operate in a preset frequency band if interference still exists in the interfered communication system after the interference coordination unit attempts all working frequency points of the interfered communication system or adjusts the transmission power of the interfered communication system to the lowest transmission power.
Preferably, the two coexisting communication systems include a long term evolution LTE system and a wireless fidelity WIFI system.
Optionally, the apparatus for interfering between coexisting communication systems may further include:
the system comprises a configuration unit and a control unit, wherein the configuration unit is used for configuring two groups of antennas for the WIFI system, and the distance between one group of antennas and the LTE system antenna meets a preset distance threshold value;
and the first replacing unit is used for replacing the working antenna of the WIFI system into a group of antennas, the distance between the working antenna of the WIFI system and the antenna of the LTE system meets a preset distance threshold value, if the interference still exists in the interfered communication system after the narrow-band filter is opened by the first control unit.
Optionally, the apparatus for interfering between coexisting communication systems may further include:
and the second control unit is used for controlling downlink silence of the interference communication system in an uplink time slot of the interfered communication system if the interference still exists in the interfered communication system after the first replacing unit replaces the working antenna of the WIFI system to be a group of antennas of which the distance between the working antenna of the WIFI system and the antenna of the LTE system meets a preset distance threshold.
In specific implementation, if the interfered communication system is an LTE system and the interfering communication system is a WIFI system, the interference is performed
The interference coordination unit 62 is specifically configured to reduce the transmission power of the WIFI system according to a preset step until the LTE system does not have interference or the minimum transmission power of the WIFI system is reached.
Optionally, the apparatus for interfering between coexisting communication systems may further include a second determining unit and a third determining unit, wherein:
the interference coordination unit 62 is further configured to increase the transmission power of the WIFI system according to the preset step diameter if the first control unit opens the narrowband filter and there is no interference in the interfered communication system; and when the judgment result of the second judgment unit is yes, returning the transmission power of the WIFI system to be the transmission power before the transmission power of the WIFI system is increased; when the judgment result of the third judgment unit is negative, increasing the transmitting power of the WIFI system according to the preset step diameter on the basis of the transmitting power of the adjusted WIFI system;
a second determining unit, configured to determine whether interference exists in the LTE system after the interference coordination unit increases the transmit power of the WIFI system each time;
and the third judging unit is used for further judging whether the transmitting power of the WIFI system reaches the maximum transmitting power or not when the judging result of the second judging unit is negative.
In specific implementation, if the interfered communication system is a WIFI system and the interfering communication system is an LTE system, the interfered communication system with interference is targeted
The interference coordination unit 62 is specifically configured to change the working frequency point of the WIFI system until there is no interference in the interfered communication system, or all working frequency points of the interfered communication system are tried.
Preferably, the interference coordination unit 62 is further configured to, if the first control unit opens the narrow-band filter, and then there is no interference in the interfered communication system, back the working frequency point of the WIFI system; after the working frequency point of the WIFI system is rolled back every time, if the fact that the WIFI system has interference is judged, the working frequency point of the WIFI system is adjusted to be the working frequency point before the rolling back.
For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same or in multiple pieces of software or hardware in practicing the invention. Preferably, the apparatus for coordinating interference between coexisting communication systems provided in the embodiments of the present invention may be disposed in a home base station.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
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 (12)
1. A method for interference coordination between coexisting communication systems, comprising:
judging whether interference exists in at least one of two coexisting communication systems, wherein the two coexisting communication systems comprise a Long Term Evolution (LTE) system and a wireless fidelity (WIFI) system;
if so, gradually adjusting the transmitting power of the interference communication system causing the interference aiming at the interfered communication system with the interference until the interfered communication system has no interference or reaches the lowest transmitting power of the interference communication system, or gradually adjusting the working frequency points of the interfered communication system until the interfered communication system has no interference or tries all the working frequency points of the interfered communication system;
if the interfered communication system is an LTE system and the interfering communication system is a WIFI system, adjusting the interference of the WIFI system on the LTE system in the following way:
reducing the transmitting power of the WIFI system according to a preset step diameter until the LTE system has no interference or the lowest transmitting power of the WIFI system is reached;
if the interfered communication system is a WIFI system and the interfering communication system is an LTE system, the interference of the LTE system on the WIFI system is adjusted in the following mode:
and replacing the working frequency points of the WIFI system until the interfered communication system is not interfered, or trying all the working frequency points of the WIFI system.
2. The method of claim 1, wherein if interference still exists in the interfered communication system after all the operating frequency points of the interfered communication system are tried or the transmission power of the interfered communication system is adjusted to the lowest transmission power, the method further comprises:
and opening a narrow-band filter for an interfered communication system, and controlling the interfered communication system to work in a preset frequency band.
3. The method of claim 2, wherein two sets of antennas are configured for a WIFI system, wherein a distance between one set of antennas and an LTE system antenna satisfies a preset distance threshold; and
if the interfered communication system still has interference after the narrow-band filter is opened, the method further comprises:
and replacing the working antenna of the WIFI system into a group of antennas, wherein the distance between the working antenna of the WIFI system and the antenna of the LTE system meets a preset distance threshold value.
4. The method of claim 3, wherein if interference is still present in the interfered communication system after replacing the working antenna of the WIFI system to a group of antennas with a distance from the LTE system antenna satisfying a preset distance threshold, the method further comprises:
and controlling the downlink silence of the interference communication system in the uplink time slot of the interfered communication system.
5. The method of claim 2, wherein if the interfered communication system is an LTE system and the interfering communication system is a WIFI system, the method further comprises, if the interfered communication system has no interference after the narrowband filter is turned on:
increasing the transmitting power of the WIFI system according to the preset step diameter;
after each increase in the transmit power of the WIFI system, performing the following:
judging whether the LTE system has interference or not;
if so, returning the transmitting power of the WIFI system to be the transmitting power before the transmitting power of the WIFI system is increased;
if not, further judging whether the transmitting power of the WIFI system reaches the maximum transmitting power;
and if the maximum transmitting power is not reached, increasing the transmitting power of the WIFI system according to the preset step diameter on the basis of the transmitting power of the adjusted WIFI system.
6. The method of claim 2, wherein if the interfered communication system is a WIFI system and the interfering communication system is an LTE system, the method further comprises, if the interfered communication system has no interference after the narrowband filter is turned on:
backing the working frequency point of the WIFI system; and
after the working frequency point of the WIFI system is rolled back every time, if the fact that the WIFI system has interference is judged, the working frequency point of the WIFI system is adjusted to be the working frequency point before the rolling back.
7. An apparatus for interference coordination between coexisting communication systems, comprising:
the first judging unit is used for judging whether interference exists in at least one of two coexisting communication systems, wherein the two coexisting communication systems comprise a Long Term Evolution (LTE) system and a wireless fidelity (WIFI) system;
an interference coordination unit, configured to gradually adjust, when a determination result of the first determination unit is yes, a transmission power of an interfering communication system causing interference for an interfered communication system having the interference until the interfered communication system does not have the interference or reaches a minimum transmission power of the interfering communication system, or gradually adjust a working frequency point of the interfered communication system until the interfered communication system does not have the interference or all working frequency points of the interfered communication system are tried;
if the interfered communication system is an LTE system and the interfering communication system is a WIFI system, the interference coordination unit is specifically used for reducing the transmitting power of the WIFI system according to a preset step diameter until the LTE system has no interference or the lowest transmitting power of the WIFI system is reached;
if the interfered communication system is a WIFI system and the interfering communication system is an LTE system, the interference coordination unit is specifically configured to change the working frequency point of the WIFI system until there is no interference in the interfered communication system or all working frequency points of the WIFI system are tried.
8. The apparatus of claim 7, further comprising:
the first control unit is configured to open a narrow-band filter for the interfered communication system and control the interfered communication system to operate in a preset frequency band if interference still exists in the interfered communication system after the interference coordination unit attempts all working frequency points of the interfered communication system or adjusts the transmission power of the interfered communication system to the lowest transmission power.
9. The apparatus of claim 8, further comprising:
the system comprises a configuration unit and a control unit, wherein the configuration unit is used for configuring two groups of antennas for the WIFI system, and the distance between one group of antennas and the LTE system antenna meets a preset distance threshold value;
and the first replacing unit is used for replacing the working antenna of the WIFI system into a group of antennas, the distance between the working antenna of the WIFI system and the antenna of the LTE system meets a preset distance threshold value, if the interference still exists in the interfered communication system after the narrow-band filter is opened by the first control unit.
10. The apparatus of claim 9, further comprising:
and the second control unit is used for controlling downlink silence of the interference communication system in an uplink time slot of the interfered communication system if the interference still exists in the interfered communication system after the first replacing unit replaces the working antenna of the WIFI system to be a group of antennas of which the distance between the working antenna of the WIFI system and the antenna of the LTE system meets a preset distance threshold.
11. The apparatus of claim 8, further comprising a second determination unit and a third determination unit, wherein:
the interference coordination unit is further configured to, if the interfered communication system is an LTE system and the interfering communication system is a WIFI system, increase the transmission power of the WIFI system according to the preset step size if the interfered communication system does not have interference after the first control unit opens the narrow band filter; and when the judgment result of the second judgment unit is yes, returning the transmission power of the WIFI system to be the transmission power before the transmission power of the WIFI system is increased; when the judgment result of the third judgment unit is negative, increasing the transmitting power of the WIFI system according to the preset step diameter on the basis of the transmitting power of the adjusted WIFI system;
a second determining unit, configured to determine whether interference exists in the LTE system after the interference coordination unit increases the transmit power of the WIFI system each time;
and the third judging unit is used for further judging whether the transmitting power of the WIFI system reaches the maximum transmitting power or not when the judging result of the second judging unit is negative.
12. The apparatus of claim 8,
the interference coordination unit is further configured to, if the interfered communication system is a WIFI system and the interfering communication system is an LTE system, back the working frequency point of the WIFI system if the interfered communication system has no interference after the first control unit opens the narrow band filter; after the working frequency point of the WIFI system is rolled back every time, if the fact that the WIFI system has interference is judged, the working frequency point of the WIFI system is adjusted to be the working frequency point before the rolling back.
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| WO2019218121A1 (en) * | 2018-05-14 | 2019-11-21 | 海能达通信股份有限公司 | Method for multimode communication, mobile terminal, and storage medium |
| CN110858981A (en) * | 2018-08-23 | 2020-03-03 | 联合汽车电子有限公司 | Method and device for reducing mutual interference of WIFI and BLE coexistence |
| CN109474300B (en) * | 2018-11-13 | 2021-09-14 | 维沃移动通信有限公司 | Antenna control method of mobile terminal and mobile terminal |
| WO2020177079A1 (en) * | 2019-03-05 | 2020-09-10 | 华为技术有限公司 | Antenna selection method, device and apparatus |
| CN112020130B (en) * | 2019-05-30 | 2021-12-28 | 华为技术有限公司 | Interference processing method and equipment |
| CN110311694B (en) * | 2019-06-25 | 2021-06-04 | Oppo广东移动通信有限公司 | Communication interference control method and related product |
| US10805936B1 (en) * | 2019-07-24 | 2020-10-13 | Cypress Semiconductor Corporation | Device, system and methods for mitigating interference in a wireless network |
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