CN102378195A - Terminal co-existing interference inhibiting method and device - Google Patents
Terminal co-existing interference inhibiting method and device Download PDFInfo
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Abstract
The invention discloses a terminal co-existing interference inhibiting method and a terminal co-existing interference inhibiting device. The method comprises the following steps that: current work frequency information of a second communication module is acquired by a first communication module; the interference of the second communication module working at the current work frequency on the first communication module at each work frequency is determined by the first communication module according to co-existing interference parameters of each work frequency of the second communication module on each work frequency of the first communication module; and each work frequency of the first communication module is determined whether to be usable by the first communication module according to the determined interference, and a usable work frequency is selected to inhibit the co-existing interference with the second communication module when the current work frequency is determined to be unusable. By adopting the method and the device, the co-existing interference among different communication modules can be inhibited in the terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a device for suppressing coexistence interference of a terminal.
Background
In the current communication network, the LTE (Long Term Evolution) working Band includes Band 40(2300-2400MHz) and Band 7(2500-2570/2620-2690MHz), as shown in fig. 1. Due to the proximity of the LTE operating band to the ISM (Industrial Scientific Medical) band (2400-2483.5MHz), and the non-idealities of the transmitter and the receiver, interference may occur between the LTE device and a Wi-Fi (Wireless Fidelity) device using the ISM band, including performance degradation of the victim receiver due to transmitter out-of-band leakage (unwanted transmission) and performance degradation of the victim receiver due to non-idealities of receiver out-of-band rejection. When the LTE module and the Wi-Fi module are in the same terminal, coexistence interference between the LTE module and the Wi-Fi module is severe because coupling isolation between the LTE antenna and the Wi-Fi antenna is very low (about 10dB to 15 dB).
The wireless communication system usually uses 3dB of terminal sensitivity loss as an index of maximum stray interference, but since ISM devices are widely available and out-of-band stray indexes are poor, a neighboring frequency band can only reach a universal stray index of more than 1GHz specified by ITU (International Telecommunication Union), namely-30 dBm/MHz, and therefore, the desensitization of LTE devices caused by Wi-Fi interference usually exceeds a 3dB desensitization criterion. Assuming that the transmitting power of Wi-Fi is 15dBm, the stray radiation power in the 2380-2400MHz frequency band is-30 dBm/MHz, and the isolation between the LTE antenna and the Wi-Fi antenna in the same terminal is 15dBi, the radiation power in the 2380-2400MHz frequency band received by the LTE antenna is-45 dBm/MHz, and the receiver bottom noise power of the LTE equipment is-92 dBm, so that the desensitization caused by Wi-Fi interference on the LTE equipment is about 47dB, and far exceeds the 3dB desensitization criterion.
As shown in fig. 2, the most commonly used channels for Wi-Fi devices are configured as Channel 1, Channel 6, and Channel 11. When Channel 1 is used by Wi-Fi devices, the interference (including spurious and blocking interference) caused to LTE devices using the Band 40 Band is maximized. Wherein, the stray interference will be reduced along with the reduction of the LTE working frequency, and the blocking interference is almost equal at different positions of the 2300-2400MHz frequency band.
At present, for the problem of coexistence interference between different communication modules in a terminal, no solution is provided in the prior art.
Disclosure of Invention
The embodiment of the invention provides a method and equipment for suppressing coexistence interference of a terminal, which are used for suppressing interference between a mobile communication module and a Wi-Fi module in the terminal.
The embodiment of the invention provides a method for inhibiting coexistence interference of a terminal, which comprises the following steps:
the first communication module acquires the current working frequency information of the second communication module;
the first communication module determines interference caused by the second communication module working at the current working frequency to the first communication module on each working frequency according to preset coexistence interference parameters of each working frequency of the second communication module to each working frequency of the first communication module;
and the first communication module determines whether each working frequency of the first communication module is available according to the determined interference, and selects the available working frequency to inhibit the coexistence interference with the second communication module when determining that the current working frequency is unavailable.
The embodiment of the invention also provides a method for inhibiting the coexistence interference of the terminal, which comprises the following steps:
the method comprises the steps that a first communication module determines interference on each working frequency of a second communication module when the first communication module works at the current working frequency according to preset coexistence interference parameters of each working frequency of the first communication module to each working frequency of the second communication module;
the first communication module determines the current available or/and unavailable working frequency of the second communication module under the current working frequency of the first communication module according to the determined interference, and sends the determined working frequency information to the second communication module;
and the second communication module selects the available working frequency to inhibit coexistence interference with the first communication module according to the received working frequency information when determining that the current working frequency of the second communication module is unavailable.
The embodiment of the present invention further provides a terminal, including a first communication module and a second communication module, where the first communication module includes:
the acquisition submodule is used for acquiring the current working frequency information of the second communication module;
the determining submodule is used for determining the interference on each working frequency caused by the second communication module when the second communication module works at the current working frequency according to the preset coexisting interference parameter of each working frequency of the second communication module to each working frequency of the first communication module;
and the suppression submodule is used for determining whether each working frequency of the first communication module is available or not according to the determined interference, and selecting the available working frequency to suppress the interference with the second communication module when the current working frequency is determined to be unavailable.
The embodiment of the invention also provides a terminal, which comprises a first communication module and a second communication module,
the first communication module is used for determining the interference of the first communication module to each working frequency of the second communication module when the first communication module works at the current working frequency according to the preset coexistence interference parameters of each working frequency of the first communication module to each working frequency of the second communication module; determining the current available or/and unavailable working frequency of the second communication module under the current working frequency of the first communication module according to the determined interference, and sending the determined working frequency information to the second communication module;
and the second communication module is used for selecting the available working frequency to inhibit coexistence interference with the first communication module when determining that the current working frequency of the second communication module is unavailable according to the received working frequency information.
Compared with the prior art, the embodiment of the invention has the following advantages: according to the embodiment of the invention, the frequency domain information is exchanged among the different communication modules coexisting in the same terminal, so that the different communication modules carry out frequency domain coordination, the coexistence interference among the different communication modules in the same terminal is avoided, and the coordination work of the different communication modules in the terminal is realized.
Drawings
Fig. 1 is a schematic diagram of an LTE operating frequency band and an ISM frequency band in the prior art;
FIG. 2 is a schematic diagram of the operating frequency of a prior art Wi-Fi device;
fig. 3 is a schematic diagram illustrating desensitization of a Wi-Fi module used in an embodiment of the present invention to LTE receivers with different operating frequencies;
fig. 4 is a schematic diagram illustrating desensitization of an LTE module used in an embodiment of the present invention to Wi-Fi modules with different operating frequencies;
fig. 5 is a flowchart illustrating a method for suppressing coexistence interference of terminals according to a first embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for suppressing coexistence interference of terminals according to a second embodiment of the present invention;
fig. 7 is a flowchart of a method for suppressing coexistence interference of terminals according to a third embodiment of the present invention;
fig. 8 is a diagram of a flow of a method for suppressing coexistence interference of terminals according to a fourth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal in the fifth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a terminal in a sixth embodiment of the present invention.
Detailed Description
In the technical scheme provided by the embodiment of the invention, the terminal comprises a first communication module and a second communication module, wherein the first communication module can determine the interference caused by the second communication module working at the current working frequency on each working frequency according to the preset coexistence interference parameter of each working frequency of the second communication module on each working frequency of the first communication module; and the first communication module determines whether each working frequency of the first communication module is available according to the determined interference, and selects the available working frequency to inhibit the coexistence interference with the second communication module when determining that the current working frequency is unavailable.
The first communication module can also determine the interference of the first communication module to each working frequency of the second communication module when the first communication module works at the current working frequency according to the preset coexisting interference parameter of each working frequency of the first communication module to each working frequency of the second communication module; the first communication module determines the current available or/and unavailable working frequency of the second communication module under the current working frequency of the first communication module according to the determined interference, and sends the determined working frequency information to the second communication module; the second communication module may select an available operating frequency to suppress coexistence interference with the first communication module when determining that the current operating frequency of the second communication module is not available according to the received operating frequency information.
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A transmitter of a communication module (e.g., an LTE module or a Wi-Fi module) in a terminal may generate interference to a receiver of another communication module, which causes sensitivity loss of the receiver, referred to as receiver desensitization (or desensitization for short), and the transmitter may cause different interference strengths and receiver desensitization to the receiver of another communication module at different operating frequencies. According to experience or experimental tests, the mapping relation between different working frequencies of different communication modules and the interference intensity or the mapping relation between different working frequencies of different communication modules and the desensitization of the receiver can be obtained.
Fig. 3 shows a schematic diagram of desensitization of a Wi-Fi module to an LTE receiver at different operating frequencies when the Wi-Fi module and the LTE module coexist in the same terminal. As shown in the figure, when the Wi-Fi module works in Channel 1, the desensitization caused to the LTE receiver working in 2345-2400MHz is greater than 50dB, and the desensitization caused to the LTE receiver working in 2300-2345MHz is between 10dB and 50 dB. When the LTE module operates in the frequency band, it will be greatly interfered.
Fig. 4 shows a schematic diagram of desensitization of an LTE module to a Wi-Fi receiver at different operating frequencies when the LTE module and the Wi-Fi module coexist in the same terminal. As shown in the figure, when the LTE module works in 2385-2400MHz, the desensitization caused by the Wi-Fi module working in the ISM frequency band is more than 50 dB. When the Wi-Fi module works in the ISM frequency band, the Wi-Fi module is greatly interfered.
In the embodiment of the present invention, the terminal may store the corresponding relationship between the operating frequencies of different communication modules and the desensitization in advance, such as the corresponding relationship shown in fig. 3 or/and fig. 4, or store the corresponding relationship between the operating frequencies of different communication modules and the interference strength in advance, so that the terminal determines the availability of each operating frequency of the communication modules according to the corresponding relationship, and further takes measures to suppress coexistence interference between the communication modules.
As shown in fig. 5, a flowchart of a method for suppressing coexistence interference of a terminal in a first embodiment of the present invention is applied to a terminal including a mobile communication module and a Wi-Fi module, and the method includes the following steps:
Specifically, the mobile communication module may receive a Media Access Control (MAC) signaling from the Wi-Fi module, to obtain current working frequency information of the Wi-Fi module carried in the MAC signaling, where the working frequency information may include one or more of working frequency band information of the Wi-Fi module, a channel center frequency point and a channel bandwidth of the Wi-Fi module, and a channel number of the Wi-Fi module. The working frequency band information refers to the initial frequency position of a working channel; the channel center frequency point is the center frequency point of the working channel; the channel numbers are numbers of working channels of the Wi-Fi module, such as 1, 6 and 11. It should be noted that the operating frequency information in the embodiment of the present invention is not limited to the parameter information listed above.
The coexistence interference parameter of each working frequency of the Wi-Fi module to each working frequency of the mobile communication module may specifically be: desensitization and/or interference strength at each frequency caused by a transmitter of the Wi-Fi module to a receiver of the mobile communication module at each frequency. When the coexistence interference parameter is desensitization, the mobile communication module may query the correspondence table shown in fig. 3 to obtain desensitization of the mobile communication module on each operating frequency caused by the current operating frequency of the Wi-Fi module. When the coexistence interference parameter is the interference intensity, the mobile communication module may query the interference intensity of each working frequency of the Wi-Fi module to each working frequency of the mobile communication module, to obtain the interference intensity of the current working frequency of the Wi-Fi module to each working frequency of the mobile communication module.
And step 503, the mobile communication module suppresses coexistence interference with the Wi-Fi module according to the determined coexistence interference parameters.
Specifically, the mobile communication module may respectively calculate performance parameters at each operating frequency according to the determined coexisting interference parameters of each operating frequency, select an operating frequency corresponding to the performance parameter that meets the requirement according to a preset performance parameter threshold, and connect or switch to a cell corresponding to the selected operating frequency.
When the coexistence interference parameter is desensitization, the mobile communication module may determine desensitization caused by each working frequency point of the mobile communication module itself under the current working frequency of the Wi-Fi module, and then determine the performance parameter of each carrier by combining the desensitization, RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) measurement values, and determine whether each carrier in its working frequency band satisfies a service Quality requirement, a handover requirement, a cell reselection request, and a cell selection request according to a relationship between the performance parameter of each carrier and a preset threshold. The performance parameter of each carrier may be a signal-to-interference ratio and/or a signal-to-noise ratio.
For example, as shown in fig. 3, in the case that the mobile communication module is an LTE module, the channel number of the Wi-Fi module received by the LTE module is 1, that is, the Wi-Fi module uses a frequency point nearest to the Band 40. The LTE module obtains desensitization values of the Wi-Fi module to each operating frequency of the LTE module at the current operating frequency by querying the content shown in fig. 3, and obtains interference power caused by the Wi-Fi module at each operating frequency according to the following formula:
a.... (1);
wherein I is the interference power of the Wi-Fi module; and N is the LTE receiver bottom noise and can be obtained according to the LTE system bandwidth and the noise coefficient.
Further, the LTE module obtains the useful Signal power of the terminal when each carrier operates according to the RSRP measurement value at each operating frequency, determines an SINR (Signal to Interference plus noise ratio) estimation value of the terminal according to the Interference power of the Wi-Fi module calculated by the formula (1) and the useful Signal power of the terminal, and then judges whether each carrier can meet the service quality requirement according to a relationship between the SINR estimation value and a preset threshold. For example, when the SINR estimate is lower than a preset threshold, it is determined that the SINR estimate does not meet the service quality requirement, and the carrier corresponding to the SINR estimate is unavailable; and when the SINR estimated value is lower than the preset threshold, judging that the SINR estimated value meets the service quality requirement, wherein the carrier corresponding to the SINR estimated value is available.
Of course, the LTE module may also regard, according to the content shown in fig. 3, the operating frequency lower than 15dB (or other set value) in the desensitization value corresponding to each operating frequency of the LTE module as the operating frequency that can be used by the LTE module (the isolation between the LTE antenna and the Wi-Fi antenna of the terminal is about 10-15dB) when the Wi-Fi module operates at 2380-2400MHz, and regard other operating frequencies as the operating frequency that cannot be used. However, the LTE module calculates the performance parameters at each operating frequency according to the coexistence interference parameters, and can more accurately determine the availability of each carrier within its own operating frequency band, thereby ensuring that the selected operating frequency can meet the requirement of suppressing coexistence interference.
The mobile communication module determines the availability of each carrier in the working frequency range of the mobile communication module, if the current working frequency of the mobile communication module belongs to the unavailable working frequency range, or even if the current working frequency belongs to the available working frequency range, the working frequency with smaller interference degree exists, the working frequency corresponding to the performance parameter meeting the requirement can be selected, and the mobile communication module can be connected to the cell corresponding to the selected working frequency by initiating cell selection or cell reselection; or switching to the cell corresponding to the selected working frequency by initiating a switching request. Specifically, the mobile communication module may select, according to the availability of the carrier, an operating frequency corresponding to a performance parameter that meets the requirement, and initiate cell selection or cell reselection to connect to a cell corresponding to the selected operating frequency, where the selected cell may be a cell with the highest signal strength on the operating frequency; and according to the availability of each carrier, when determining that a certain carrier is no longer available, triggering the switching caused by the coexistence interference of the carrier to initiate a switching request to the base station equipment to request to switch to the cell corresponding to the other available carrier.
The mobile communication module can also report the selected working frequency to the network side, and switch to a cell corresponding to the working frequency according to the indication of the network side, or switch from the unavailable carrier to the available carrier, or schedule from the unavailable frequency resource block to the available frequency resource block.
The mobile communication module can also report the availability information of each carrier to the base station equipment, and the base station equipment carries out scheduling or switching according to the availability of each carrier, so that the mobile communication module is switched from the unavailable carrier to the available carrier, or is scheduled from the unavailable frequency resource block to the available frequency resource block. Specifically, after receiving the determination result of the availability of each carrier, the base station device may determine whether the current working carrier of the mobile communication module is available, and further determine whether the terminal needs to be scheduled or switched to the available carrier frequency or a cell corresponding to the available frequency, including being switched to another frequency of the base station or working on an available frequency of another base station.
In the embodiment of the invention, the mobile communication module can switch to other cells corresponding to the working frequency meeting the performance requirement under the condition that the performance parameters under the current working frequency do not meet the requirement according to the process; or switching to the cell corresponding to the operating frequency with the best performance when the performance of the current operating frequency is not the best performance.
It should be noted that, in other embodiments of the present invention, the mobile communication module may also select a coexistence interference parameter meeting the requirement from the determined coexistence interference parameters according to a preset coexistence interference parameter threshold, determine an operating frequency corresponding to the selected coexistence interference parameter, and connect or switch to a cell corresponding to the determined operating frequency. By the method, the processes of determining the carrier availability and selecting the working frequency can be simplified, so that the coexistence interference can be quickly suppressed.
It can be seen from the above description that, in the embodiment of the present invention, the mobile communication module and the Wi-Fi module coexist in the same terminal, and the working frequency information is interacted between the mobile communication module and the Wi-Fi module, so that the mobile communication module and the Wi-Fi module perform working frequency coordination, coexistence interference between the mobile communication module and the Wi-Fi module is avoided, and coordination work of the mobile communication module and the Wi-Fi module in the terminal is achieved.
As shown in fig. 6, a flowchart of a method for suppressing coexistence interference of a terminal in the second embodiment of the present invention is applied to a terminal including a mobile communication module and a Wi-Fi module, and the method includes the following steps:
Specifically, the Wi-Fi module may receive an MAC signaling from the mobile communication module to obtain current working frequency information of the Wi-Fi module carried in the MAC signaling, where the working frequency information may include one or more of working frequency band information of the mobile communication module, a channel center frequency point and a channel bandwidth of the mobile communication module, and a channel number of the mobile communication module. The working frequency band information refers to the initial frequency position of a working channel; the channel center frequency point is the center frequency point of the working channel; the Channel Number is a Number of an operating Channel of the mobile communication module, such as an EARFCN (E-UTRA Absolute radio frequency Channel Number, evolved universal mobile telecommunications system terrestrial radio access Absolute radio frequency Channel Number). It should be noted that the operating frequency information in the embodiment of the present invention is not limited to the parameter information listed above.
The coexistence interference parameter of each working frequency of the mobile communication module to each working frequency of the Wi-Fi module may specifically be: desensitization and/or interference strength at each frequency caused by a transmitter of the mobile communication module to a receiver of the Wi-Fi module at each frequency. When the coexistence interference parameter is desensitization, the Wi-Fi module may query the correspondence table shown in fig. 4 to obtain desensitization of the Wi-Fi module on each operating frequency due to the current operating frequency of the mobile communication module. When the coexistence interference parameter is the interference intensity, the Wi-Fi module may query the interference intensity of each working frequency of the mobile communication module to each working frequency of the Wi-Fi module, to obtain the interference intensity of the current working frequency of the mobile communication module to each working frequency of the Wi-Fi module.
And 603, the Wi-Fi module restrains the coexistence interference with the mobile communication module according to the determined coexistence interference parameter.
Specifically, the Wi-Fi module may respectively calculate performance parameters at each operating frequency according to the determined coexisting interference parameters of each operating frequency, select an operating frequency corresponding to the performance parameter that meets the requirements according to a preset performance parameter threshold, and request scheduling to the selected operating frequency; or data transmission at the selected operating frequency.
When the coexistence interference parameter is desensitization, the Wi-Fi module may determine desensitization caused to each working frequency point of the Wi-Fi module itself under the current working frequency of the mobile communication module, and then determine the performance parameter of each carrier in combination with the desensitization, the pilot signal strength, and/or the pilot signal quality measurement value, and determine whether each carrier in its working frequency band satisfies the service quality requirement and/or whether the carrier is suitable for initiating a contention request according to the relationship between the performance parameter of each carrier and a preset threshold. The performance parameter of each carrier may be a signal-to-noise ratio and/or a signal-to-interference ratio.
For example, as shown in fig. 4, when the frequency range used by the mobile communication module received by the Wi-Fi module is 2380-2400MHz, that is, when the mobile communication module uses a frequency point closest to the ISM frequency band, the Wi-Fi module may determine desensitization of the mobile communication module to itself according to a correspondence between operating frequency information and desensitization stored in the terminal in advance as shown in fig. 4, determine a performance parameter of itself in combination with a measured value of the Wi-Fi AP downlink pilot reception power, and determine availability of one or more carriers in its operating frequency band or availability of each carrier according to a relationship between the performance parameter and a preset threshold. Certainly, the Wi-Fi module may also directly determine, according to the content shown in fig. 4, that the LTE module operates at 2380-2400MHz, and the operating frequency lower than 15dB (or other set value) in the desensitization value corresponding to each operating frequency of the Wi-Fi module is regarded as the operating frequency that can be used by the LTE module (the isolation between the LTE antenna of the terminal and the Wi-Fi antenna is about 10-15dB) when the LTE module operates at 2380-2400MHz, and the other operating frequencies are regarded as the unavailable operating frequency. However, the Wi-Fi module calculates the performance parameters under each working frequency according to the coexisting interference parameters, and can more accurately determine the availability of each carrier in the working frequency band of the Wi-Fi module, so that the selected working frequency can meet the requirement of suppressing the coexisting interference.
The Wi-Fi module determines the availability of each carrier in the working frequency band of the Wi-Fi module, and after the working frequency corresponding to the performance parameter meeting the requirement is selected, the Wi-Fi module can request to be scheduled to the carrier corresponding to the selected working frequency by initiating resource competition; or data transmission at the selected operating frequency. Specifically, after obtaining the availability of one or more carriers, the Wi-Fi module may select a suitable target operating frequency, and initiate resource contention according to the target operating frequency, so as to implement operation at the target operating frequency, including switching from a current operating frequency to the target operating frequency, or selecting the target operating frequency at initial access.
In the embodiment of the invention, the Wi-Fi module can switch to other working frequencies meeting the performance requirements to work under the condition that the performance parameters under the current working frequency do not meet the requirements according to the procedures; and in the case that the performance of the current operating frequency is not the optimal performance, switching to the operating frequency with the optimal performance for operation.
It should be noted that, in other embodiments of the present invention, the Wi-Fi module may also select a coexistence interference parameter meeting the requirement from the determined coexistence interference parameters according to a preset coexistence interference parameter threshold, determine a working frequency corresponding to the selected coexistence interference parameter, and request to schedule to the determined working frequency; or data transmission at the determined operating frequency. By the method, the processes of determining the carrier availability and selecting the working frequency can be simplified, so that the coexistence interference can be quickly suppressed.
It can be seen from the above description that, in the embodiment of the present invention, the mobile communication module and the Wi-Fi module coexist in the same terminal, and the working frequency information is interacted between the mobile communication module and the Wi-Fi module, so that the mobile communication module and the Wi-Fi module perform working frequency coordination, coexistence interference between the mobile communication module and the Wi-Fi module is avoided, and coordination work of the mobile communication module and the Wi-Fi module in the terminal is achieved.
As shown in fig. 7, a flowchart of a method for suppressing coexistence interference of a terminal in a third embodiment of the present invention is applied to a terminal including a mobile communication module and a Wi-Fi module, and the method includes the following steps:
The coexistence interference parameter of each working frequency of the mobile communication module to each working frequency of the Wi-Fi module may specifically be: desensitization and/or interference strength at each frequency caused by a transmitter of the mobile communication module to a receiver of the Wi-Fi module at each frequency. When the coexistence interference parameter is desensitization, the mobile communication module may query a pre-stored correspondence between carrier frequency information and desensitization as shown in fig. 4 according to its own operating frequency, and determine desensitization of its own current operating frequency to a Wi-Fi module operating in each frequency band. When the coexistence interference parameter is the interference intensity, the mobile communication module may obtain the interference intensity of the current working frequency of the mobile communication module to each working frequency of the Wi-Fi module by querying the content shown in fig. 4.
And step 702, the mobile communication module determines the available working frequency or/and the unavailable working frequency of the Wi-Fi module under the current working frequency according to a preset coexistence interference parameter threshold, and sends the determination result to the Wi-Fi module.
Specifically, when the coexistence interference parameter is desensitization, the mobile communication module regards the working frequency of the Wi-Fi module corresponding to desensitization exceeding 15dB (or other set values) as an unavailable working frequency (limited carrier) of the Wi-Fi module at the current working frequency of the mobile communication module according to the desensitization value of each working frequency of the Wi-Fi module determined in step 701, and regards other working frequencies as available working frequencies (non-limited carriers).
The information about the available operating frequency (or carrier) or/and the unavailable operating frequency (or carrier) sent by the mobile communication module to the Wi-Fi module may be: and one or more of working frequency band information, channel center frequency points, channel bandwidth, channel numbers and the like. The mobile communication module may send restricted carrier information to the Wi-Fi module via MAC signaling.
In step 703, the Wi-Fi module selects an available operating frequency to suppress interference with the mobile communication module according to the received available operating frequency (non-limited carrier) or/and unavailable operating frequency (limited carrier) information under the condition that measures for suppressing coexistence interference need to be taken.
Specifically, under the condition that the mobile communication module sends the limited carrier information to the Wi-Fi module, if the Wi-Fi module judges that the Wi-Fi module works on the limited carrier at present, the Wi-Fi module may limit the Wi-Fi module to work on the limited carrier (limited carrier) according to the limited carrier information, or reduce the priority of the limited carrier.
The Wi-Fi module may initiate resource contention according to the restricted carrier information, that is, when the Wi-Fi module operates on the restricted carrier, request scheduling to a carrier other than the restricted carrier information (an unrestricted carrier) or perform data transmission on the unrestricted carrier by initiating the resource contention.
It can be seen from the above description that, in the embodiment of the present invention, by interacting limited carrier information between the mobile communication module and the Wi-Fi module coexisting in the same terminal, the mobile communication module and the Wi-Fi module perform working frequency coordination, thereby avoiding coexistence interference between the mobile communication module and the Wi-Fi module, and realizing coordination work of the mobile communication module and the Wi-Fi module in the terminal.
As shown in fig. 8, a flowchart of a method for suppressing coexistence interference of a terminal in the fourth embodiment of the present invention is applied to a terminal including a mobile communication module and a Wi-Fi module, and the method includes the following steps:
The coexistence interference parameter of each working frequency of the Wi-Fi module to each working frequency of the mobile communication module may specifically be: desensitization and/or interference strength at each frequency caused by a transmitter of the Wi-Fi module to a receiver of the mobile communication module at each frequency. When the coexistence interference parameter is desensitization, the Wi-Fi module may query, according to its own operating frequency, a pre-stored correspondence between carrier frequency information shown in fig. 3 and desensitization, and determine desensitization of its own current operating frequency to the mobile communication module operating in each frequency band. When the coexistence interference parameter is the interference intensity, the Wi-Fi module may obtain the interference intensity of the current operating frequency of the Wi-Fi module to each operating frequency of the mobile communication module by querying the content shown in fig. 4.
And step 802, the Wi-Fi module determines the available working frequency or/and the unavailable working frequency of the mobile communication module under the current working frequency according to a preset coexistence interference parameter threshold, and sends the determination result to the mobile communication module.
Specifically, when the coexistence interference parameter is desensitization, the Wi-Fi module regards the operating frequency of the mobile communication module corresponding to desensitization exceeding 15dB (or other set values) as an unavailable operating frequency (limited carrier) of the mobile communication module at the current operating frequency of the Wi-Fi module according to the desensitization value of each operating frequency of the mobile communication module determined in step 801, and regards other operating frequencies as available operating frequencies (non-limited carrier).
The information about the available operating frequency (or carrier) or/and the unavailable operating frequency (or carrier) sent by the Wi-Fi module to the mobile communication module may be: and one or more of working frequency band information, channel center frequency points, channel bandwidth, channel numbers and the like. The Wi-Fi module may transmit the restricted carrier information to the mobile communication module through MAC signaling.
In step 803, the mobile communication module selects an available operating frequency to suppress interference with the mobile communication module according to the received information of the available operating frequency (non-limited carrier) or/and the unavailable operating frequency (limited carrier) under the condition that measures for suppressing coexistence interference are required.
Specifically, the mobile communication module may limit, according to the restricted carrier information, the operation on the carrier (restricted carrier) corresponding to the information, or reduce the priority of the restricted carrier. The mobile communication module can be connected to a cell corresponding to a carrier other than the limited carrier information by initiating cell selection or cell reselection; or switching to a cell corresponding to a carrier other than the limited carrier information by initiating a switching request; and the limited carrier information can be reported to a network side, and the cell corresponding to the carrier except the limited carrier information is switched to according to the indication of the network side.
It can be seen from the above description that, in the embodiment of the present invention, by interacting limited carrier information between the mobile communication module and the Wi-Fi module coexisting in the same terminal, the mobile communication module and the Wi-Fi module perform working frequency coordination, thereby avoiding coexistence interference between the mobile communication module and the Wi-Fi module, and realizing coordination work of the mobile communication module and the Wi-Fi module in the terminal.
It should be noted that the method for suppressing the coexistence interference of the terminal in the embodiment of the present invention is not only applicable between the mobile communication module using Band 40(2300-2400MHz) and the Wi-Fi module using the ISM Band, but also applicable between the mobile communication module using Band 7(2500-2570/2620-2690MHz) and the Wi-Fi module using the ISM Band.
According to the method for suppressing the terminal coexistence interference provided in the foregoing embodiment, an embodiment of the present invention further provides a method and an apparatus for applying the above suppression of the terminal coexistence interference.
As shown in fig. 9, which is a schematic diagram of a terminal structure in the fifth embodiment of the present invention, the terminal structure includes a first communication module 910 and a second communication module 920. The first communication module 910 includes:
the obtaining sub-module 911 is configured to obtain current operating frequency information of the second communication module 920.
The determining sub-module 912 is configured to determine, according to a preset coexistence interference parameter of each operating frequency of the second communication module 920 to each operating frequency of the first communication module 910, interference caused by the second communication module 920 operating at the current operating frequency to each operating frequency of the first communication module 910.
The interference condition of each operating frequency of the second communication module 920 to each operating frequency of the first communication module 910 may specifically be: the transmitter of the second communication module 920 desensitizes and/or interferes with the receiver of the first communication module 910 on frequencies.
The suppressing sub-module 913 is configured to determine whether each operating frequency of the first communication module 910 is available according to the determined interference, and select an available operating frequency to suppress interference with the second communication module 920 when it is determined that the current operating frequency is not available.
Specifically, the above-mentioned sub-module 913 may respectively calculate corresponding performance parameters according to the determined interference caused by the second communication module 920 working at the current working frequency to the first communication module 910 at each working frequency; according to a preset performance parameter threshold, determining the working frequency corresponding to the performance parameter with performance superior to the threshold as an available working frequency; otherwise, the working frequency is determined to be unavailable.
The suppression sub-module 913 may further determine, according to a preset coexistence interference parameter threshold, a coexistence interference parameter that is not greater than the threshold in the interference parameters caused by the second communication module 920 to the first communication module 910 at the operating frequencies, and regard the operating frequency corresponding to the coexistence interference parameter as an available operating frequency and regard the operating frequency corresponding to the other coexistence interference parameters as an unavailable operating frequency.
The suppression sub-module 913 may also request to schedule to the available operating frequency, or connect or switch to a cell corresponding to the available operating frequency.
The first communication module 910 may be a mobile communication module, and correspondingly, the second communication module 920 is a Wi-Fi module. The mobile communication module can be connected to a cell corresponding to the available working frequency by initiating cell selection or cell reselection; or switching to a cell corresponding to the available working frequency by initiating a switching request; and reporting the available working frequency to a network side, and switching to a cell or a carrier corresponding to the working frequency according to the indication of the network side.
The first communication module 910 may also be a Wi-Fi module, and correspondingly, the second communication module 920 is a mobile communication module; the Wi-Fi module can request to be scheduled to an available working frequency by initiating resource competition; or data transmission at an available operating frequency.
According to the embodiment of the invention, the mobile communication module and the Wi-Fi module are subjected to frequency domain coordination through the interaction of the frequency domain information between the mobile communication module and the Wi-Fi module which coexist in the same terminal, so that the coexistence interference between the mobile communication module and the Wi-Fi module is avoided, and the coordination work of the mobile communication module and the Wi-Fi module in the terminal is realized.
As shown in fig. 10, which is a schematic diagram of a terminal structure in the fifth embodiment of the present invention, the terminal structure includes a first communication module 110 and a second communication module 120. Wherein,
the first communication module 110 is configured to determine, according to a preset coexistence interference parameter of each operating frequency of the first communication module 110 to each operating frequency of the second communication module 120, interference of the first communication module 110 operating at a current operating frequency to each operating frequency of the second communication module 120; according to the determined interference, the currently available or/and unavailable operating frequency of the second communication module 120 at the current operating frequency of the first communication module 110 is determined, and the determined operating frequency information is sent to the second communication module 120.
The coexisting interference parameter of each operating frequency of the first communication module 110 to each operating frequency of the second communication module 120 may specifically be: the transmitter of the first communication module 110 causes desensitization and/or interference strength at each frequency to the receiver of the second communication module 120 at each frequency.
The first communication module 110 may determine interference parameters caused by the first communication module 110 operating at the current operating frequency to the second communication module 120 at each operating frequency, regard an operating frequency corresponding to a coexistence interference parameter that does not exceed a coexistence interference parameter threshold as an available operating frequency, and regard an operating frequency corresponding to another coexistence interference parameter as an unavailable operating frequency.
The second communication module 120 is configured to select an available operating frequency to suppress coexistence interference with the first communication module 110 when determining that the current operating frequency of the second communication module 120 is not available according to the received operating frequency information.
Specifically, the first communication module 110 may be a mobile communication module, and correspondingly, the second communication module 120 is a Wi-Fi module. The Wi-Fi module can request to be scheduled to an available working frequency by initiating resource competition; or data transmission over available operating frequency information.
The first communication module 110 may also be a Wi-Fi module, and correspondingly, the second communication module 120 is a mobile communication module. The mobile communication module can be connected to a cell corresponding to the available working frequency by initiating cell selection or cell reselection; or switching to a cell corresponding to the available working frequency by initiating a switching request; and reporting the available working frequency information to a network side, and switching to a cell corresponding to the available working frequency according to the indication of the network side.
According to the embodiment of the invention, the mobile communication module and the Wi-Fi module perform frequency domain coordination through the interaction of the limited carrier information between the mobile communication module and the Wi-Fi module which coexist in the same terminal, so that coexistence interference between the mobile communication module and the Wi-Fi module is avoided, and coordination work of the mobile communication module and the Wi-Fi module in the terminal is realized.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the embodiments of the present invention may be substantially implemented or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes several instructions for enabling a terminal device (which may be a mobile phone, a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present invention.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the embodiment of the present invention, and these modifications and decorations should also be considered to be within the scope of the present invention.
Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be integrated into one body, or may be separately deployed; the sub-modules can be combined into one module, or can be further split into a plurality of sub-modules.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (22)
1. A method for suppressing coexistence interference of a terminal, comprising:
the first communication module acquires the current working frequency information of the second communication module;
the first communication module determines interference caused by the second communication module working at the current working frequency to the first communication module on each working frequency according to preset coexistence interference parameters of each working frequency of the second communication module to each working frequency of the first communication module;
and the first communication module determines whether each working frequency of the first communication module is available according to the determined interference, and selects the available working frequency to inhibit the coexistence interference with the second communication module when determining that the current working frequency is unavailable.
2. The method of claim 1, wherein the first communication module determining whether each operating frequency is available comprises:
the first communication module respectively calculates corresponding performance parameters according to the determined interference on the working frequencies of the first communication module caused by the second communication module working at the current working frequency;
the first communication module determines the working frequency corresponding to the performance parameter with performance superior to a preset performance parameter threshold as an available working frequency according to the preset performance parameter threshold; otherwise, the working frequency is determined to be unavailable.
3. The method of claim 1, wherein the first communication module determining whether each operating frequency is available comprises:
the first communication module determines a coexistence interference parameter which does not exceed a preset coexistence interference parameter threshold in interference parameters caused by the second communication module on each working frequency to the first communication module according to the preset coexistence interference parameter threshold, and regards the working frequency corresponding to the coexistence interference parameter as an available working frequency and regards the working frequency corresponding to other coexistence interference parameters as an unavailable working frequency.
4. The method of claim 1, wherein the selecting the available operating frequencies to suppress coexistence interference with the second communication module comprises:
the first communication module requests to be scheduled to an available working frequency, or is connected or switched to a cell corresponding to the available working frequency.
5. The method of claim 4, wherein the first communication module is a mobile communication module and the second communication module is a wireless-compatible authentication Wi-Fi module;
the mobile communication module is connected to a cell corresponding to an available working frequency by initiating cell selection or cell reselection; or
The mobile communication module switches to a cell corresponding to an available working frequency by initiating a switching request; or
The mobile communication module reports the available working frequency to the network side, and switches to the cell or carrier corresponding to the working frequency according to the indication of the network side.
6. The method of claim 4, wherein the first communication module is a Wi-Fi module and the second communication module is a mobile communication module;
the Wi-Fi module requests to be scheduled to available working frequency by initiating resource competition; or data transmission at an available operating frequency.
7. The method according to any one of claims 1 to 6, wherein the coexisting interference parameter of each operating frequency of the second communication module to each operating frequency of the first communication module is: the transmitter of the second communication module desensitizes and/or interferes with the receiver of the first communication module at each frequency with the strength of the interference at each frequency.
8. A method for suppressing coexistence interference of a terminal, comprising:
the method comprises the steps that a first communication module determines interference on each working frequency of a second communication module when the first communication module works at the current working frequency according to preset coexistence interference parameters of each working frequency of the first communication module to each working frequency of the second communication module;
the first communication module determines the current available or/and unavailable working frequency of the second communication module under the current working frequency of the first communication module according to the determined interference, and sends the determined working frequency information to the second communication module;
and the second communication module selects the available working frequency to inhibit coexistence interference with the first communication module according to the received working frequency information when determining that the current working frequency of the second communication module is unavailable.
9. The method according to claim 8, wherein the first communication module determines, according to the determined interference, an operating frequency that is currently available or unavailable to the second communication module at a current operating frequency of the first communication module, specifically:
after determining the interference parameters caused by the first communication module working at the current working frequency to the second communication module on each working frequency, the first communication module regards the working frequency corresponding to the coexisting interference parameter which does not exceed the coexisting interference parameter threshold as an available working frequency, and regards the working frequencies corresponding to other coexisting interference parameters as unavailable working frequencies.
10. The method of claim 8, wherein the first communication module is a mobile communication module and the second communication module is a Wi-Fi module;
the Wi-Fi module requests to be scheduled to an available working frequency or performs data transmission on the available working frequency by initiating resource contention.
11. The method of claim 8, wherein the first communication module is a Wi-Fi module and the second communication module is a mobile communication module;
the mobile communication module is connected to a cell corresponding to an available working frequency by initiating cell selection or cell reselection; or
The mobile communication module switches to a cell corresponding to an available working frequency by initiating a switching request; or
The mobile communication module reports the available working frequency information to the network side and switches to the cell corresponding to the available working frequency according to the indication of the network side.
12. The method according to any one of claims 8 to 11, wherein the coexisting interference parameter of each operating frequency of the first communication module to each operating frequency of the second communication module is specifically: the transmitter of the first communication module desensitizes and/or interferes with the receiver of the second communication module at each frequency with respect to the strength of the interference at each frequency.
13. A terminal comprising a first communication module and a second communication module, wherein the first communication module comprises:
the acquisition submodule is used for acquiring the current working frequency information of the second communication module;
the determining submodule is used for determining the interference on each working frequency caused by the second communication module when the second communication module works at the current working frequency according to the preset coexisting interference parameter of each working frequency of the second communication module to each working frequency of the first communication module;
and the suppression submodule is used for determining whether each working frequency of the first communication module is available or not according to the determined interference, and selecting the available working frequency to suppress the interference with the second communication module when the current working frequency is determined to be unavailable.
14. The terminal of claim 13,
the suppression submodule is specifically configured to calculate corresponding performance parameters respectively according to interference caused by the determined second communication module working at the current working frequency to the first communication module at each working frequency; according to a preset performance parameter threshold, determining the working frequency corresponding to the performance parameter with performance superior to the threshold as an available working frequency; otherwise, the working frequency is determined to be unavailable.
15. The terminal of claim 13,
the suppression submodule is specifically configured to determine, according to a preset coexistence interference parameter threshold, a coexistence interference parameter that does not exceed the threshold among interference parameters that are caused by the second communication module to the first communication module at each operating frequency, regard an operating frequency corresponding to the coexistence interference parameter as an available operating frequency, and regard an operating frequency corresponding to another coexistence interference parameter as an unavailable operating frequency.
16. The terminal of claim 13,
the suppression submodule is specifically configured to request scheduling to an available operating frequency, or connect or switch to a cell corresponding to the available operating frequency.
17. The terminal of claim 16, wherein the first communication module is a mobile communication module, and the second communication module is a Wi-Fi module;
the mobile communication module is used for connecting to a cell corresponding to an available working frequency by initiating cell selection or cell reselection; or
Switching to a cell corresponding to an available working frequency by initiating a switching request; or
Reporting the available working frequency to a network side, and switching to a cell or a carrier corresponding to the working frequency according to the indication of the network side.
18. The terminal of claim 16, wherein the first communication module is a Wi-Fi module and the second communication module is a mobile communication module;
the Wi-Fi module is used for requesting to dispatch to available working frequency by initiating resource competition; or data transmission at an available operating frequency.
19. A terminal comprising a first communication module and a second communication module,
the first communication module is used for determining the interference of the first communication module to each working frequency of the second communication module when the first communication module works at the current working frequency according to the preset coexistence interference parameters of each working frequency of the first communication module to each working frequency of the second communication module; determining the current available or/and unavailable working frequency of the second communication module under the current working frequency of the first communication module according to the determined interference, and sending the determined working frequency information to the second communication module;
and the second communication module is used for selecting the available working frequency to inhibit coexistence interference with the first communication module when determining that the current working frequency of the second communication module is unavailable according to the received working frequency information.
20. The terminal of claim 19,
the first communication module is specifically configured to determine interference parameters caused by the first communication module when the first communication module operates at a current operating frequency to the second communication module at each operating frequency, regard an operating frequency corresponding to a coexistence interference parameter that does not exceed a coexistence interference parameter threshold as an available operating frequency, and regard operating frequencies corresponding to other coexistence interference parameters as unavailable operating frequencies.
21. The terminal of claim 19, wherein the second communication module is a mobile communication module, and the first communication module is a Wi-Fi module;
the mobile communication module is used for connecting to a cell corresponding to an available working frequency by initiating cell selection or cell reselection; or
Switching to a cell corresponding to the available working frequency information by initiating a switching request; or
And reporting the available working frequency information to a network side, and switching to a cell corresponding to the available working frequency according to the indication of the network side.
22. The terminal of claim 19, wherein the second communication module is a Wi-Fi module, and the first communication module is a mobile communication module;
the Wi-Fi module is used for requesting to dispatch to available working frequency by initiating resource competition; or data transmission at an available operating frequency.
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