CN102984828A - Terminal and communication interference suppression method - Google Patents

Abstract

The present invention proposes a terminal, including: a first communication module and a second communication module, the terminal performs data interaction with the outside through the first communication module and the second communication module; When communicating with the outside at the same time, obtain the time slot logic information of the two communication modules, and judge whether the adjacent receiving time slot of the first communication module will coincide with the adjacent transmitting time slot of the second communication module according to the time slot logic information, And before the adjacent receiving time slot coincides with the adjacent transmitting time slot, send a closing command to close the receiving channel of the first communication module, or send a closing command to close the transmitting channel of the second communication module. Correspondingly, the present invention also provides a communication interference suppression method. Through the technical scheme of the invention, communication interference is effectively suppressed without affecting the performance of the communication module, thereby improving the communication quality.

Description

Terminal and Communication Interference Suppression Method

technical field

The present invention relates to the technical field of mobile communication, in particular, to a terminal and a method for suppressing communication interference.

Background technique

With the improvement of user requirements for smart terminal networks, dual-network dual-standby mobile phones are increasingly favored by users. Among dual-network dual-standby mobile terminals such as TD-SCDMA/WCDMA or TD-SCDMA/GSM, GSM network (referred to as G network) DCS frequency band (transmitting frequency 1710~1785MHz) and TD-SCDMA network (referred to as TD network) 2G frequency band (receiving frequency 2010~2025MHz) between the signal interference reduces the quality of mobile phone signals, which may lead to dropped calls, dropped networks, etc. Therefore, it is particularly necessary to reduce the mutual interference when the dual network works. As shown in Figure 1, on the one hand, the existing technical means rely on increasing the antenna isolation of the two communication networks to reduce the interference between the two networks. Another solution is to add a filter in the receiving section of the communication module to reduce the interference, the common point of these two solutions is to increase the attenuation of the path from the transmitter of the A communication module transmitter to the receiver of the B communication module, thereby reducing the interference of the transmitted signal to the receiver. The difference is that increasing the antenna isolation can reduce the There is little in-band and out-of-band interference, and adding filters can only suppress out-of-band interference.

The disadvantage of increasing antenna isolation to reduce mutual interference is that it is difficult. It is difficult to achieve high isolation if the antenna takes into account OTA performance, so interference cannot be completely eliminated; adding a receiving filter scheme in the receiving section can effectively suppress the receiver Out-of-band interference, but in-band interference cannot be suppressed. At the same time, adding a filter will inevitably increase the loss of the receiving path, resulting in a decrease in receiver sensitivity and lower receiver performance.

Therefore, there is a need for a new communication interference suppression technology, which can solve the problem of incomplete interference elimination or interference suppression measures affecting the performance of communication modules in related technologies, thereby improving communication quality.

Contents of the invention

Based on the above problems, the present invention proposes a new communication interference suppression technology, which can solve the problem of incomplete interference elimination or interference suppression measures affecting the performance of communication modules in related technologies, thereby improving communication quality.

In view of this, the present invention proposes a terminal, including: a first communication module and a second communication module, the terminal performs data interaction with the outside through the first communication module and the second communication module; a controller, When the first communication module and the second communication module communicate with the outside at the same time, acquire the time slot logic information of the first communication module and the second communication module, and according to the time slot logic Information to determine whether the adjacent receiving time slot of the first communication module will coincide with the adjacent transmitting time slot of the second communication module, and before the adjacent receiving time slot coincides with the adjacent transmitting time slot, send a closing instruction to close The receiving channel of the first communication module, or sending a closing instruction to close the transmitting channel of the second communication module.

In this technical solution, when the first communication module and the second communication module communicate with the outside at the same time, the receiving time slot of the first communication module and the transmitting time slot of the second communication module will overlap periodically. Signal interference will only be formed when the receiving time slot of one communication module coincides with the transmitting time slot of the second communication module. Therefore, this solution uses the time slot monitoring method to control the two communication modules to turn off the antenna switch of one of the communication modules when the time slots overlap through the controller, so as to completely suppress the signal interference between the two communication modules to avoid interference due to The communication interruption and network drop caused by the problem improve the communication quality.

In the above technical solution, preferably, the first communication module includes a first communication processor, which detects the received signal quality of the first communication module and feeds back the detection result to the controller; the second communication module It includes a second communication processor, which detects the transmit power level of the second communication module and feeds back the detection result to the controller; the controller judges whether the received signal quality is less than or equal to a preset signal quality threshold, and judges Whether the transmit power level is less than or equal to a preset power level, and when the received signal quality is less than or equal to the preset signal quality threshold and the transmit power level is less than or equal to the preset power level, obtain the first Time slot logic information of a communication module and time slot logic information of the second communication module.

In this technical solution, when the received signal quality of the first communication module is less than or equal to the preset signal quality threshold and the transmit power level of the second communication module is less than or equal to the preset power level, there is a greater possibility of a weak signal, That is to say, it is more likely to cause interference to communication, so the time slot logic information of the first communication module and the time slot logic information of the second communication module are acquired only under weak signals. When encountering overlapping time slots, Taking the restraining measures of the present invention to generate interruption, but when the signal is good, the original state of communication will still be guaranteed, no interruption will be generated, and user experience will be improved. Among them, users and manufacturers can preset power levels and signal quality thresholds according to actual conditions.

In the above technical solution, preferably, the controller is further configured to send an opening instruction to the first communication module at the time slot next to the receiving time slot, or to send an opening instruction to the first communication module at the time slot next to the transmitting time slot Send an open command to the second communication module; when the first communication module receives the close command from the controller, close the antenna switch of the first communication module to close the receiving path, and When receiving the opening instruction from the controller, turn on the antenna switch of the first communication module to open the receiving path; when the second communication module receives the closing instruction from the controller, turn off The antenna switch of the second communication module is used to close the transmission path, and when an opening instruction is received from the controller, the antenna switch of the second communication module is turned on to open the transmission path.

In this technical solution, both the time slots of the first communication module and the time slots of the second communication module are turned on and off by controlling the antenna switch, and the logic of the antenna switch is easy to obtain and control. Therefore, judging the time slot logic and Controlling the logic of the switches is easy to implement. Simultaneously, open the antenna switch in the next time slot next to the receiving time slot of the first communication module or the next time slot adjacent to the transmitting time slot of the second communication module, thereby recovering the receiving function of the first communication module or the transmitting function of the second communication module , to ensure that information can continue to be transmitted after interruption of reception or interruption of transmission.

In the above technical solution, preferably, the controller is further configured to send an interrupt command to the base station through the first communication module in a time slot preceding the adjacent receiving time slot.

In this technical solution, an interrupt command is sent to the base station in the time slot before the receiving time slot of the first communication module, so that the base station will not send service data to the terminal when the receiving time slot is near, and the first communication module resumes When receiving, the base station sends the unsent service data to the terminal, so that even if the antenna switch is turned off in the adjacent time slot, the complete service data can still be received, so as to ensure that the information can continue to be transmitted after the interruption of reception, reducing packet loss Rate.

In the above technical solution, preferably, the controller includes a statistical unit for counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module according to the time slot logic information, When the coincidence rate is greater than a preset value, the close instruction is sent before the adjacent receiving time slot coincides with the adjacent transmitting time slot.

In this technical solution, the interference suppression measure of the present invention is triggered only by counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module and judging that the coincidence rate is greater than a preset value, namely Before the adjacent receiving time slot of the first communication module coincides with the adjacent transmitting time slot of the second communication module, a shutdown instruction is sent to the first communication module or the second communication module, so as to avoid affecting the normal use of the user to the greatest extent.

According to another aspect of the present invention, there is also provided a communication interference suppression method, including: step 302, when the first communication module and the second communication module of the terminal communicate with the outside at the same time, acquire the first communication module and the second communication module Time slot logic information of the second communication module; step 304, judging according to the time slot logic information whether the adjacent receiving time slot of the first communication module will coincide with the adjacent transmitting time slot of the second communication module; Step 306, when the adjacent receiving time slot coincides with the adjacent transmitting time slot, close the receiving channel of the first communication module, or close the transmitting channel of the second communication module, so as to suppress the first communication communication interference between the module and the second communication module.

In this technical solution, when the first communication module and the second communication module work at the same time, the receiving time slot of the first communication module and the transmitting time slot of the second communication module will overlap periodically, only when the first communication module When the receiving time slot of the second communication module coincides with the transmitting time slot of the second communication module, signal interference will be formed. Therefore, this solution uses the time slot monitoring method to control the two communication modules to turn off the antenna switch of one of the communication modules when the time slots overlap through the controller, so as to completely suppress the signal interference between the two communication modules to avoid interference due to The communication interruption and network drop caused by the problem improve the communication quality.

In the above technical solution, preferably, the step 302 further includes: acquiring the received signal quality of the first communication module and the transmit power level of the second communication module; judging whether the received signal quality is less than or equal to a preset A signal quality threshold, and judging whether the transmit power level is less than or equal to a preset power level; when the received signal quality is less than or equal to the preset signal quality threshold, and the transmit power level is less than or equal to the preset power level , to obtain the slot logic information.

In this technical solution, when the received signal quality of the first communication module is less than or equal to the preset signal quality threshold and the transmit power level of the second communication module is less than or equal to the preset power level, there is a greater possibility of a weak signal, That is to say, it is more likely to cause interference to communication, so the time slot logic information of the first communication module and the time slot logic information of the second communication module are acquired only under weak signals. When encountering overlapping time slots, Taking the restraining measures of the present invention to generate interruption, but when the signal is good, the original state of communication will still be guaranteed, no interruption will be generated, and user experience will be improved. Among them, users and manufacturers can preset power levels and signal quality thresholds according to actual conditions.

In the above technical solution, preferably, the step 306 specifically includes: when the adjacent receiving time slot coincides with the adjacent transmitting time slot, closing the receiving path through the antenna switch of the first communication module, Turn on the antenna switch of the first communication module in the next time slot adjacent to the receiving time slot, or close the transmission path through the antenna switch of the second communication module, and open the next time slot in the adjacent transmission time slot The antenna switch of the second communication module.

In this technical solution, both the time slots of the first communication module and the time slots of the second communication module are turned on and off by controlling the antenna switch, and the logic of the antenna switch is easy to obtain and control. Therefore, judging the time slot logic and Controlling the logic of the switches is easy to implement. Simultaneously, open the antenna switch in the next time slot next to the receiving time slot of the first communication module or the next time slot adjacent to the transmitting time slot of the second communication module, thereby recovering the receiving function of the first communication module or the transmitting function of the second communication module . Guarantees that information can continue to be transmitted after interruption of reception or interruption of transmission.

In the above technical solution, preferably, the step 306 further includes: sending an interruption command to the base station in a time slot preceding the adjacent receiving time slot, so that the base station stops sending data to the terminal.

In this technical solution, an interrupt command is sent to the base station in the time slot before the receiving time slot of the first communication module, so that the base station will interrupt the sending instruction sent to it in the receiving time slot of the first communication module, and then When the first communication module resumes receiving, it will send it again, so as to ensure that the information can continue to be transmitted after the interruption of receiving, and the information will not be missed.

In the above technical solution, preferably, the step 304 further includes: counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module according to the time slot logic information; if If the overlap ratio is greater than a preset value, then step 306 is performed.

In this technical solution, the interference suppression measure of the present invention is triggered only by counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module and judging that the coincidence rate is greater than a preset value, namely Before the adjacent receiving time slot of the first communication module coincides with the adjacent transmitting time slot of the second communication module, a shutdown instruction is sent to the first communication module or the second communication module, so as to avoid affecting the normal use of the user to the greatest extent.

Through the above technical solution, the problem of incomplete interference elimination or interference suppression measures affecting the performance of the communication module in the related art can be solved, thereby improving the communication quality.

Description of drawings

FIG. 1 shows a schematic diagram of a traditional communication interference suppression method;

Fig. 2 shows a block diagram of a terminal according to an embodiment of the present invention;

FIG. 3 shows a flowchart of a communication interference suppression method according to an embodiment of the present invention;

FIG. 4 shows a specific flowchart of a communication interference suppression method according to an embodiment of the present invention;

Figure 5A shows a schematic diagram of the frame length and time slot of the TD communication module;

Figure 5B shows a schematic diagram of the frame length and time slot of the GSM communication module;

Figure 5C shows a schematic diagram of time slot overlap;

Fig. 6 shows a flowchart of a communication interference suppression method according to another embodiment of the present invention.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in a second manner different from that described here. Therefore, the protection scope of the present invention is not limited by the following disclosure. limitations of specific examples.

Fig. 2 shows a block diagram of a terminal according to an embodiment of the present invention.

As shown in Figure 2, the terminal 200 of the embodiment of the present invention includes: a first communication module 202 and a second communication module 204, and the terminal communicates with the outside through the first communication module 202 and the second communication module 204 Data interaction; the controller 206, when the first communication module 202 and the second communication module 204 communicate with the outside at the same time, obtain the time of the first communication module 202 and the second communication module 204 Slot logic information, and judge according to the time slot logic information whether the adjacent receiving time slot of the first communication module 202 will coincide with the adjacent transmitting time slot of the second communication module 204, and whether the adjacent receiving time slot and the adjacent transmitting time slot will coincide Before the adjacent transmission time slot coincides, send a closing command to close the receiving channel of the first communication module 202, or send a closing command to close the transmitting channel of the second communication module 204.

Therefore, when the first communication module 202 and the second communication module 204 communicate with the outside at the same time, the receiving time slot of the first communication module and the transmitting time slot of the second communication module will overlap periodically. Signal interference will only be formed when the receiving time slot of the module coincides with the transmitting time slot of the second communication module. Therefore, this solution uses the time slot monitoring method to control the two communication modules to turn off the antenna switch of one of the communication modules when the time slots overlap through the controller, so as to completely suppress the signal interference between the two communication modules to avoid interference due to The communication interruption and network drop caused by the problem improve the communication quality.

In the above technical solution, preferably, the first communication module 202 includes a first communication processor 2022, which detects the quality of the received signal of the first communication module 202 and feeds back the detection result to the controller 206; The second communication module 204 includes a second communication processor 2042, which detects the transmit power level of the second communication module 204 and feeds back the detection result to the controller 206; the controller 206 judges whether the received signal quality is less than equal to the preset signal quality threshold, and judge whether the transmit power level is less than or equal to the preset power level, and when the received signal quality is less than or equal to the preset signal quality threshold, and the transmit power level is less than or equal to the preset When setting the power level, time slot logic information of the first communication module 202 and time slot logic information of the second communication module 204 are acquired.

In this technical solution, when the received signal quality of the first communication module 202 is less than or equal to the preset signal quality threshold and the transmit power level of the second communication module 204 is less than or equal to the preset power level, the possibility of a weak signal is relatively low. Large, that is, the possibility of causing interference to communication is relatively high, so the time slot logic information of the first communication module 202 and the time slot logic information of the second communication module 204 are acquired only under weak signals. When the time slot is used, the suppressing measures of the present invention are adopted to generate an interruption, but when the signal is good, the original state of the communication is still guaranteed, no interruption will be generated, and the user experience is improved. Among them, users and manufacturers can preset power levels and signal quality thresholds according to actual conditions.

In the above technical solution, preferably, the controller 206 is further configured to send an opening instruction to the first communication module 202 in the next time slot of the adjacent receiving time slot, or send Send an open command to the second communication module 204 in one time slot; when the first communication module 202 receives the close command from the controller, close the antenna switch of the first communication module 202 to close the receiving path, and when receiving an opening instruction from the controller 206, turn on the antenna switch of the first communication module 202 to open the receiving path; the second communication module 204 receives the When the closing instruction of the controller 206 is turned off, the antenna switch of the second communication module 204 is turned off to close the transmission path, and when the opening instruction from the controller 206 is received, the second communication module 204 is turned on Antenna switch to open the transmit path.

In this technical solution, both the time slots of the first communication module and the time slots of the second communication module are turned on and off by controlling the antenna switch, and the logic of the antenna switch is easy to obtain and control. Therefore, judging the time slot logic and Controlling the logic of the switches is easy to implement. Simultaneously, open the antenna switch in the next time slot next to the receiving time slot of the first communication module or the next time slot adjacent to the transmitting time slot of the second communication module, thereby recovering the receiving function of the first communication module or the transmitting function of the second communication module , to ensure that information can continue to be transmitted after interruption of reception or interruption of transmission.

In the above technical solution, preferably, the controller 206 is further configured to send an interruption command to the base station through the first communication module 202 in a time slot preceding the adjacent receiving time slot.

Therefore, in the time slot before the receiving time slot of the first communication module, an interrupt command is sent to the base station, so that the base station will not send the service data to the terminal when the receiving time slot is close to, and when the first communication module resumes receiving, the base station Then send the unsent service data to the terminal, so that even if the antenna switch is turned off in the adjacent time slot, the complete service data can still be received, so as to ensure that the information can continue to be transmitted after the interruption of reception and reduce the packet loss rate.

In the above technical solution, preferably, the controller 206 includes a statistical unit 2062, which counts the receiving time slot of the first communication module 202 and the transmitting time slot of the second communication module 204 according to the time slot logic information When the coincidence rate is greater than a preset value, the closing instruction is sent before the adjacent receiving time slot coincides with the adjacent transmitting time slot.

Only by counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module and judging that the coincidence rate is greater than the preset value, the interference suppression measure of the present invention is triggered, that is, in the first communication module Before the adjacent receiving time slot coincides with the adjacent transmitting time slot of the second communication module, a shutdown command is sent to the first communication module or the second communication module, so as to avoid affecting the normal use of the user to the greatest extent.

Fig. 3 shows a flowchart of a communication interference suppression method according to an embodiment of the present invention.

As shown in FIG. 3 , the communication interference suppression method includes: step 302, when the first communication module and the second communication module of the terminal communicate with the outside at the same time, obtain the information of the first communication module and the second communication module time slot logic information; step 304, judge whether the adjacent receiving time slot of the first communication module will coincide with the adjacent transmitting time slot of the second communication module according to the time slot logic information; step 306, in the adjacent When the receiving time slot coincides with the adjacent transmitting time slot, close the receiving path of the first communication module, or close the transmitting path of the second communication module, so as to prevent the communication between the first communication module and the second communication module. Communication interference between modules.

In this technical solution, when the first communication module and the second communication module work at the same time, the receiving time slot of the first communication module and the transmitting time slot of the second communication module will overlap periodically, only when the first communication module When the receiving time slot of the second communication module coincides with the transmitting time slot of the second communication module, signal interference will be formed. Therefore, this solution uses the time slot monitoring method to control the two communication modules to avoid time slot overlap through the controller, so as to avoid communication interruption and network disconnection caused by interference, and improve communication quality.

In the above technical solution, preferably, the step 302 further includes: acquiring the received signal quality of the first communication module and the transmit power level of the second communication module; judging whether the received signal quality is less than or equal to a preset A signal quality threshold, and judging whether the transmit power level is less than or equal to a preset power level; when the received signal quality is less than or equal to the preset signal quality threshold, and the transmit power level is less than or equal to the preset power level , to obtain the slot logic information.

When the received signal quality of the first communication module is less than or equal to the preset signal quality threshold and the transmit power level of the second communication module is less than or equal to the preset power level, there is a greater possibility of weak signals, that is, interference to communication Therefore, the time slot logic information of the first communication module and the time slot logic information of the second communication module are acquired only under weak signals, and when encountering overlapping time slots, take the restraining measures of the present invention Interruption occurs, but when the signal is good, the original state of communication will still be guaranteed, no interruption will occur, and user experience will be improved. Among them, users and manufacturers can preset power levels and signal quality thresholds according to actual conditions.

Therefore, both the time slots of the first communication module and the time slots of the second communication module are turned on and off by controlling the antenna switch, and the logic of the antenna switch is easy to obtain and control. Therefore, judging the time slot logic and the logic of the switch Controlling is easy to implement. Simultaneously, open the antenna switch in the next time slot next to the receiving time slot of the first communication module or the next time slot adjacent to the transmitting time slot of the second communication module, thereby recovering the receiving function of the first communication module or the transmitting function of the second communication module , to ensure that information can continue to be transmitted after interruption of reception or interruption of transmission.

In the above technical solution, preferably, the step 306 further includes: sending an interruption command to the base station in a time slot preceding the adjacent receiving time slot, so that the base station stops sending data to the terminal.

In the time slot before the receiving time slot of the first communication module, an interrupt command is sent to the base station, so that the base station will not send the service data to the terminal when the receiving time slot is near, and when the first communication module resumes receiving, the base station will The unsent service data is sent to the terminal, so that even if the antenna switch is turned off in the adjacent time slot, the complete service data can still be received, so as to ensure that the information can continue to be transmitted after the interruption of reception and reduce the packet loss rate.

In the above technical solution, preferably, the step 304 further includes: counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module according to the time slot logic information; if If the overlap ratio is greater than a preset value, then step 306 is performed.

Only by counting the coincidence rate of the receiving time slot of the first communication module and the transmitting time slot of the second communication module and judging that the coincidence rate is greater than the preset value, the interference suppression measure of the present invention is triggered, that is, in the first communication module Before the adjacent receiving time slot coincides with the adjacent transmitting time slot of the second communication module, a shutdown command is sent to the first communication module or the second communication module, so as to avoid affecting the normal use of the user to the greatest extent.

In each of the above technical solutions, the first communication module may be, for example, a GSM communication module, and the second communication module may be, for example, a TD-SCDMA communication module. The terminal according to the present invention may include two or more communication modules. When the terminal includes three or more communication modules, the interference suppression method is the same as that of two communication modules, and will not be repeated here.

Taking the GSM module and the TD-SCDMA module as examples below, this solution will be described in detail.

Fig. 4 shows a specific flow chart of a communication interference suppression method according to an embodiment of the present invention.

As shown in FIG. 4, the specific flow of the communication interference suppression method in the embodiment of the present invention is as follows:

Step 402, judging whether the GSM network and the TD network are in the communication state at the same time. When the judgment result is yes, enter step 404, otherwise, return to step 402, and continue to detect whether the GSM network and the TD network are in the communication state at the same time.

Step 404, triggering the monitoring process. Among them, the GSM information and the TD signal are time-division signals with different periods. When the GSM communication module and the TD-SCDMA module work at the same time, the transmission time slot of the GSM communication module and the reception time slot of the TD-SCDMA communication module will have periodicity. coincide, and when the GSM transmit time slot coincides with the TD receive time slot, the GSM signal will interfere with the TD signal. Therefore, when the two networks are in the call state or other communication states at the same time, the interference suppression process of this solution is triggered.

Step 406, the communication processor module in the TD-SCDMA communication module detects and feeds back the receiving quality (R) of the TD, and the communication processor module in the GSM communication module detects and feeds back the GSM transmit power level (L).

Step 408, judging whether the quality of the received signal of the TD network is less than or equal to the preset signal quality threshold, and judging whether the transmit power level of the GSM network is less than or equal to the preset power level; when the received signal quality is less than or equal to the preset signal quality threshold, and transmitting When the power level is less than or equal to the preset power level, go to step 410 ; otherwise, go back to step 402 .

Experiments have verified that when the GSM transmission power level L≤4 (high power transmission) and the TD received signal quality R≤-102dBm (weak signal), the interference is more obvious. The values of R and L can be modified according to the experimental situation. At the same time, setting the level threshold to 4 means that GSM is in the DCS frequency band, the initial level of the GSM900 frequency band is 5, and the interference of GSM to TD is mainly the interference of the DCS frequency band to TD. In practical applications, the situation that these two conditions are met at the same time is more likely to occur under the condition of weak signal, so the triggering process of the scheme may occur only under weak signal, and the communication will still be guaranteed when the signal is good The original state, no interrupt will be generated.

Step 410, the CPU acquires the time slot logic information sent by the communication processor of the GSM communication module and the time slot logic information sent by the communication processor module of the TD-CDMA communication module.

Step 412, judging whether the overlapping time slot length of the next TD receiving time slot and the next GSM transmitting time slot reaches the overlapping threshold. If the judgment result is yes, go to step 414, and if the judgment result is no, go to step 416. The overlapping time slot length can be calculated according to the time slot logic information of TD and the time slot logic information of GSM. In practical applications, when the time slot length overlaps (that is, the above-mentioned coincidence threshold) before starting interrupt and closing time slot processing, it can be specified according to actual debugging requirements.

Step 414, start the TD communication module to receive interrupts in the time slot, and at the same time turn off the antenna switch corresponding to the TD communication module, so as not to open the receiving path. By using the time slot monitoring method, before the GSM transmit time slot coincides with the TD receive time slot, the communication processor module is controlled to start the TD receive interrupt and send the interrupt information to the base station. Stop sending service data to the terminal, so that interruption of reception does not affect information loss, and at the same time, the receiving switch is turned off in the receiving time slot.

Step 416, judging whether the last TD receiving time slot is in an interrupted receiving state. When the judging result is yes, go to step 418, and when the judging result is no, go back to step 402.

Step 418, transmit a continuation reception command to the base station in the latest transmission time slot, so as to start receiving service data normally.

FIG. 5A shows a schematic diagram of the frame length and time slot of the TD communication module, and FIG. 5B shows a schematic diagram of the frame length and time slot of the GSM communication module. Among them, the GSM period is different from the TD period, but both GSM transmission and TD reception use a single time slot during a voice call.

As shown in Figure 5A, the period length of a TD frame is 5ms, and each period has 7 regular time slots (time period TS0-TS6, each time period length is 0.675ms) and 1 special time slot (DwPTS/ G/UpPTS), so there are 8 time slots. During the voice service, reception or transmission is only performed in a certain time slot in TS0-TS6.

As shown in FIG. 5B , the cycle length of a GSM frame is 4.615ms, which is divided into 8 equal-length time slots, and the length of each time slot is 0.57692ms (ie 576.92us). For voice services, reception or transmission is only performed in one of the 8 time slots.

The overlapping length of a certain time slot of TD and a certain time slot of GSM is not equal, that is to say, the overlapping rate is different, as shown in Figure 5C, the overlapping rate of the first time slot in the figure is 100 %, and the coincidence rate of the next time slot is 40%, until there is no overlap at all, after several time slots, the overlap continues completely, and then the overlap rate decreases slowly until there is no overlap at all, and so on. Therefore, in a preferred solution, only when the coincidence rate is greater than a certain preset value, is the trigger to close the TD transmit path or close the GSM receive path, assuming that the preset value is 50%, then only in the figure Only the first time slot triggers the processing procedure of the present invention.

For a long period of 200 TD frames, if the transmit time slot of the GSM communication module and the receive time slot of the TD communication module remain unchanged, the theoretical calculation of the transmit time slot of the GSM communication module and the receive time slot of the TD communication module is half the length The number of overlaps above is 22 times, that is, the program requires that the number of TD interrupt receptions accounts for 1/9 of the total number of receiving cycles, that is, only one of the 9 receiving processes needs to be interrupted, so this program is feasible and affects the communication performance. Less affected. Of course, in practical applications, the time slot lengths overlap to start interrupt and close time slot processing, which can be specified according to actual debugging requirements.

The time slots of GSM and TD are turned on and off by controlling the antenna switch, and the logic of the antenna switch is easy to obtain and control, so it is easy to judge the logic of the time slot and control the logic of the switch. At the same time, before it is calculated that the next receiving time slot will be interrupted, an interrupt request can be sent to the base station at the same time as the transmitting time slot before the next receiving time slot, so as to ensure that no information is received in the next receiving time slot, and at the same time ensure that the information is in the Transmission can continue after interruption. From this aspect, this solution is also feasible, and has little impact on communication performance.

It should be noted that, in the above-mentioned embodiment, the communication interference suppression method of the present invention is illustrated by closing the receiving path of the TD communication module as an example. It can also close the transmission path of the GSM communication module to realize communication interference suppression. It can also be used as above In the calculated 22 overlapping time slots, the receiving path and the transmitting path are turned off in turn, that is, assuming that the receiving path is closed in this overlapping time slot, then the transmitting path is closed in the next overlapping time slot, which can also achieve the purpose of the present invention.

Fig. 6 shows a specific flowchart of a method for suppressing communication interference in another embodiment.

Since the DCS frequency band of GSM is close to the TD frequency band, the influence is greater, so if GSM works in the GSM900 frequency band, the interference to TD will be very small. GSM900 frequency band mode, so that the interference of GSM to TD will be very small. Its processing flow can be shown in Figure 6:

Step 602, judging whether the two networks are in the communication state at the same time. If the judgment result is yes, go to step 604, if the judgment result is no, go to step 608.

Step 604, triggering the scheme process.

Step 606, start the software setting, make the GSM work only in the GSM900 mode.

Step 608, judging whether the GSM is working in the GSM900-only state. If the judgment result is yes, go to step 610 .

Step 610, cancel the GSM900-only mode.

The above describes the technical solution of the present invention in detail in conjunction with the accompanying drawings, because in the related art, it is not comprehensive in suppressing communication interference, and other communication performance needs to be sacrificed. Therefore, the present invention provides a communication interference suppression scheme. When the time slots overlap, the communication path of one of the communication modules is closed, which can completely eliminate the mutual interference between the two communication signals, so as to avoid communication interruption caused by interference and The problem of network drop has been improved, and the quality of communication has been improved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a terminal is characterized in that, comprising:

First communication module and second communication module, described terminal is carried out data interaction by described first communication module and described second communication module and outside;

Controller, when described first communication module and described second communication module communicate with described outside simultaneously, obtain the time slot logical message of described first communication module and described second communication module, and judge closing on receiving slot and whether will overlapping with the transmission time slot that closes on of second communication module of described first communication module according to described time slot logical message, and close on before transmission time slot overlaps with described at the described receiving slot that closes on, send out code closing the reception path of described first communication module, or send out code to close the emission path of described second communication module.

2. terminal according to claim 1 is characterized in that, described first communication module comprises the first communication processor, detects the received signal quality of described first communication module and testing result is fed back to described controller;

Described second communication module comprises the second communication processor, detects the emitting power grade of described second communication module and testing result is fed back to described controller;

Described controller judges that whether described received signal quality is less than or equal to the preset signals quality threshold, and judge that whether described emitting power grade is less than or equal to default power grade, and at described received signal quality less than or equal to described preset signals quality threshold, and described emitting power grade obtains the time slot logical message of described first communication module and the time slot logical message of described second communication module during less than or equal to described default power grade.

3. terminal according to claim 1, it is characterized in that, described controller also is used for sending OPEN at described next time slot that closes on receiving slot to described first communication module, perhaps sends OPEN at described next time slot that closes on transmission time slot to described second communication module;

Described first communication module is when the out code that receives from described controller, close the duplexer of described first communication module, to close described reception path, and when the OPEN that receives from described controller, open the duplexer of described first communication module, to open described reception path;

Described second communication module is when the out code that receives from described controller, close the duplexer of described second communication module, to close described emission path, and when the OPEN that receives from described controller, open the duplexer of described second communication module, to open described emission path.

4. terminal according to claim 3 is characterized in that, described controller also is used at the described last time slot that closes on receiving slot, sends interruptive command by described first communication module to the base station.

5. each described terminal in 4 according to claim 1, it is characterized in that, described controller comprises statistic unit, add up the coincidence factor of the transmission time slot of the receiving slot of described first communication module and described second communication module according to described time slot logical message, at described coincidence factor during greater than preset value, close on before transmission time slot overlaps with described at the described receiving slot that closes on, send described out code.

6. a Communication Jamming inhibition method is characterized in that, comprising:

Step 302 when the first communication module of terminal and second communication module communicate with the outside simultaneously, is obtained the time slot logical message of described first communication module and described second communication module;

Step 304 is judged closing on receiving slot and whether will overlapping with the transmission time slot that closes on of described second communication module of described first communication module according to described time slot logical message;

Step 306, at the described receiving slot that closes on described when closing on transmission time slot and overlapping, close the reception path of described first communication module, or close the emission path of described second communication module, to suppress the Communication Jamming between described first communication module and the described second communication module.

7. according to claim described 6 described Communication Jamming inhibition methods, it is characterized in that described step 302 also comprises: obtain the received signal quality of described first communication module and the emitting power grade of described second communication module;

Whether judge described received signal quality less than or equal to the preset signals quality threshold, and judge that whether described emitting power grade is less than or equal to default power grade;

Less than or equal to described preset signals quality threshold, and described emitting power grade obtains described time slot logical message during less than or equal to described default power grade at described received signal quality.

8. Communication Jamming inhibition method according to claim 6 is characterized in that, described step 306 specifically comprises:

At the described receiving slot that closes on described when closing on transmission time slot and overlapping, close described reception path by the duplexer of described first communication module, open the duplexer of described first communication module at described next time slot that closes on receiving slot, perhaps close described emission path by the duplexer of described second communication module, open the duplexer of described second communication module at described next time slot that closes on transmission time slot.

9. Communication Jamming inhibition method according to claim 8 is characterized in that, described step 306 also comprises: send interruptive command at the described last time slot that closes on receiving slot to the base station, so that described base station stops to send data to described terminal.

10. each described Communication Jamming inhibition method in 9 according to claim 7, it is characterized in that described step 304 also comprises: the coincidence factor of adding up the transmission time slot of the receiving slot of described first communication module and described second communication module according to described time slot logical message;

If described coincidence factor greater than preset value, then carries out described step 306.

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