WO2024007294A1 - 信道扫描方法及相关装置 - Google Patents

信道扫描方法及相关装置 Download PDF

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Publication number
WO2024007294A1
WO2024007294A1 PCT/CN2022/104590 CN2022104590W WO2024007294A1 WO 2024007294 A1 WO2024007294 A1 WO 2024007294A1 CN 2022104590 W CN2022104590 W CN 2022104590W WO 2024007294 A1 WO2024007294 A1 WO 2024007294A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
scanning
time slot
channel
radio frequency
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Ceased
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PCT/CN2022/104590
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English (en)
French (fr)
Inventor
梁朝忠
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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Priority to PCT/CN2022/104590 priority Critical patent/WO2024007294A1/zh
Publication of WO2024007294A1 publication Critical patent/WO2024007294A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements

Definitions

  • the present application relates to the field of communication technology, and specifically to a channel scanning method and related devices.
  • Terrestrial trunked radio is a trunking communication technology based on digital time division multiple access (TDMA).
  • TDMA digital time division multiple access
  • the terminal equipment in addition to receiving and transmitting information, the terminal equipment also needs to scan neighboring areas to facilitate the development of other services.
  • the Tetra system when a terminal device needs to scan neighboring cells, the Tetra system will send a monitor scan message to the terminal device.
  • the underlying module of the terminal device uses the idle time slot of the terminal device to scan the monitor message according to the message. Complete the corresponding neighborhood scan operation.
  • the sleep time will be reduced, thereby increasing the power consumption of the terminal device.
  • this application provides a channel scanning method and related devices, which can reduce the power consumption of terminal equipment.
  • the first aspect of this application provides a channel scanning method, including:
  • the scanning message includes channel parameters, the channel parameters are used to indicate the target channel to be scanned, and the scanning message is a scanning message issued by the communication system where the terminal device is located;
  • the target channel is scanned according to the channel parameters through the radio frequency circuit.
  • the receiving time slot includes a first time period during which the radio frequency circuit performs a data reception task, and a second time period during which the radio frequency circuit completes the data reception task and is in a working state;
  • scanning the target channel according to the channel parameters through the radio frequency circuit includes: in the second time period in the receiving time slot, using the radio frequency circuit to scan the target channel according to the channel parameters.
  • the method before scanning the target channel according to the channel parameters through the radio frequency circuit, the method further includes: delaying shutdown to complete the data reception task within the reception time slot.
  • the radio frequency circuit wherein the radio frequency circuit is in the working state when it is not turned off; and scanning the target channel according to the channel parameters through the radio frequency circuit includes: resetting the target channel according to the channel parameters. Set the scanning parameters of the radio frequency circuit; scan the target channel through the radio frequency circuit that resets the scanning parameters.
  • receiving the scan message includes: receiving the scan message in a reception time slot before the reception time slot or in an idle time slot.
  • the method further includes: adding the channel parameters to a cache after receiving the scan message; and obtaining the channel parameters from the cache within the receiving time slot.
  • the method further includes: if the current time slot is an idle time slot, maintaining the sleep state of the radio frequency circuit.
  • the method further includes: deleting the channel parameters corresponding to the target channel in the cache.
  • the method before obtaining the channel parameter from the cache, the method further includes: determining whether the channel parameter exists in the cache within the receiving time slot; if so, triggering the Describe the steps of obtaining the channel parameters from the cache.
  • the channel parameters include frequency information of neighboring cells.
  • the scanning message is a monitor scanning message sent by the access network element in the land trunked radio Tetra system.
  • a second aspect of this application provides a terminal device, which includes a radio frequency circuit; and further includes:
  • a receiving unit configured to receive a scanning message, where the scanning message includes channel parameters, where the channel parameters are used to indicate the target channel to be scanned, and the scanning message is a scanning message issued by the communication system where the terminal device is located;
  • a scanning unit is configured to scan the target channel according to the channel parameters through the radio frequency circuit within the receiving time slot when the terminal device is working.
  • the receiving time slot includes a first time period when the radio frequency circuit performs a data reception task, and a second time period when the radio frequency circuit completes the data reception task and is in a working state; the scanning unit Specifically, it is used to scan the target channel according to the channel parameters through the radio frequency circuit during the second time period in the receiving time slot.
  • the terminal device further includes: a delay unit, configured to delay turning off the radio frequency circuit that has completed the data reception task within the receiving time slot, wherein the radio frequency circuit is in the state when it is not turned off.
  • the working state the scanning unit is specifically configured to: reset the scanning parameters of the radio frequency circuit according to the channel parameters; and scan the target channel by using the radio frequency circuit that resets the scanning parameters.
  • the receiving unit is specifically configured to: receive the scanning message in a receiving time slot before the receiving time slot or an idle time slot.
  • the terminal device further includes: a caching unit, configured to add the channel parameters to the cache after receiving the scanning message; and an obtaining unit, configured to obtain the channel parameters from the receiving time slot within the receiving time slot. Obtain the channel parameters from the cache.
  • the terminal device further includes: a sleep unit, configured to maintain the sleep state of the radio frequency circuit when the current time slot is an idle time slot.
  • the terminal device further includes: a deletion unit, configured to delete the channel parameter corresponding to the target channel in the cache.
  • the terminal device further includes: a judgment unit, used to judge whether the channel parameter exists in the cache within the receiving time slot; a triggering unit, used to determine when the judgment unit determines that the cache When the channel parameter exists in , the step of obtaining the channel parameter from the cache is triggered.
  • the channel parameters include frequency information of neighboring cells.
  • the scanning message is a monitor scanning message sent by the access network element in the land trunked radio Tetra system.
  • the third aspect of this application provides a terminal device, including:
  • processor memory
  • the processor is configured to communicate with the memory, and execute instruction operations or codes in the memory to perform the channel scanning method provided in any one of the first aspects.
  • a fourth aspect of the present application provides a computer-readable storage medium, which is characterized in that the computer-readable storage medium includes instructions that, when the instructions are run on a computer, cause the computer to perform any of the steps provided in the first aspect. channel scanning method.
  • a channel scanning method and related devices includes: receiving a scanning message.
  • the scanning message contains channel parameters.
  • the channel parameters are used to indicate a target channel to be scanned.
  • the scanning message is a message issued by the communication system where the terminal device is located. ;
  • the target channel is scanned according to the channel parameters through the radio frequency circuit.
  • This solution uses radio frequency circuits to scan the corresponding target channel according to the channel parameters in the scanning message in the receiving time slot when the terminal device is working, so that the terminal device completes the scanning work corresponding to the scanning message in the receiving time slot. Therefore, there is no need to perform scanning work in idle time slots due to scanning messages issued by the communication system, thereby reducing the power consumption of the terminal equipment.
  • Figure 1 is a schematic diagram of time slots in the standby mode of a terminal device in an embodiment
  • Figure 2 is a schematic flow chart of a channel scanning method provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart of another channel scanning method provided by an embodiment of the present application.
  • Figure 4 is a time period configuration diagram within a receiving time slot in the embodiment of the present application.
  • Figure 5 is a schematic diagram of the operating power of a receiving time slot in an embodiment
  • Figure 6 is a schematic diagram of time slots in the standby mode of the terminal device provided by the embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of another terminal device provided by an embodiment of the present application.
  • Terrestrial trunked radio (Tetra) system Tetra digital trunking communication system, is a trunking communication system based on digital time division multiple access (TDMA) technology.
  • TDMA digital time division multiple access
  • the terminal equipment In addition to receiving and transmitting information, the terminal equipment also needs to process the monitor scanning messages sent by the Tetra system. Since there are many trigger conditions for the Tetra system to deliver monitor scan messages, the delivery time of the monitor scan messages is uncertain. In order to process the monitor scanning messages sent from time to time by the Tetra system, the terminal device needs to configure additional time slots to receive the monitor scanning messages and turn on the radio frequency circuit to perform corresponding scanning work, which consumes a lot of radio frequency resources.
  • Figure 1 is a schematic diagram of the time slots in the standby mode of the Tetra terminal cluster mode in an embodiment.
  • the four time slots in a frame are configured as one receiving time slot and three The idle time slots correspond to Slot1 and Slot2 to Slot4 in the figure respectively.
  • the terminal device performs receiving work.
  • the monitor scan message is added to the cache.
  • the workflow of the terminal equipment includes:
  • Step 101 The terminal device wakes up the radio frequency circuit from the sleep state, switches to the working state, and detects whether there is a monitor scan message to be processed or received;
  • the radio frequency circuit mentioned in this application document is a circuit required by the terminal device to work within the receiving time slot, and may specifically include a radio frequency receiving circuit and a frequency generator unit (frequency generator unit, FGU) circuit.
  • FGU frequency generator unit
  • Step 102 If the monitor scan message is detected, the scanning process corresponding to the monitor scan message is performed through the radio frequency circuit.
  • the terminal device needs to configure a radio frequency switch, lock the frequency point of the channel to be scanned corresponding to the monitor scanning message and collect data, and then turn off the radio frequency switch after the scanning process is completed.
  • a scan operation Due to the switching action of radio frequency, it will take about 6ms to lock the frequency point of the channel to be scanned. Coupled with the process of signal acquisition and data processing, the scanning of each frequency point will occupy one time slot resource (Tetra system 1 time slot 14.167ms).
  • the applicant used the time of one multiframe in standby mode as the calculation range, and calculated the resources consumed due to monitor scanning messages as shown in Table 1. Among them, the time of one multiframe is equal to the time of 18 frames.
  • the terminal device needs to wake up from the sleep state in every idle time slot to detect whether there is a monitor scan message that needs to be received and processed; while the terminal device Sleep is usually performed in idle time slots; the radio frequency circuit of the terminal device frequently switches between sleep state and working state, which will greatly weaken the actual power saving effect of standby sleep.
  • some scanning messages regularly delivered by the communication system that directly or indirectly instruct the terminal device to perform scanning operations in idle time slots will also cause the above defects.
  • the cell system will send a scanning message containing frequency point information.
  • the terminal device will perform periodic scanning based on the frequency point information, and the scanning operation can be performed in idle time slots; therefore , processing the scan message will also weaken the sleep power saving effect of the terminal device in idle time slots.
  • this application provides a channel scanning method and related devices, which can improve the time-frequency resource utilization of terminal equipment and also reduce the power consumption of terminal equipment.
  • the channel scanning method provided by the embodiment of the present application can be applied to terminal equipment in the Tetra system.
  • terminal device refers to the terminal device under the Tetra system, which can be a handheld terminal, such as a walkie-talkie and a smartphone, or a vehicle-mounted terminal, such as a vehicle navigator.
  • the Tetra system is usually used to provide command, dispatch and data transmission services.
  • many new applications such as vehicle positioning, image transmission, Mobile Internet, database query, etc. have all been implemented in the Tetra system.
  • the channel scanning method provided by the embodiment of the present application can also be applied to other communication systems based on TDMA technology, such as police digital trunking (police digital trunking, PDT) system or (digital mobile radio, DMR) system; Specifically, it can be applied to the scenario where the terminal device needs to perform channel scanning according to the scanning message or other instruction message issued by the communication system.
  • TDMA time division multiple access
  • PDT police digital trunking
  • DMR digital mobile radio
  • Figure 2 is a schematic flow chart of a channel scanning method provided by an embodiment of the present application. The method specifically includes:
  • Step 201 The terminal device receives the scanning message.
  • the scanning message includes channel parameters, and the channel parameters are used to indicate the target channel to be scanned.
  • the scanning message is a scanning message issued by the communication system where the terminal device is located.
  • the scanning message is a monitor scanning message sent from time to time by the access network element in the Tetra system.
  • the access network element may be a base station.
  • the scanning message is a monitor scanning message and the access network element is a base station.
  • the scanning message is a scanning message issued by the cell system when the terminal device registers with the cell system.
  • a cell handover process occurs when the terminal device moves across areas.
  • the terminal device periodically scans the frequency points of adjacent cells according to the configuration in the monitor scanning message sent by the base station to provide a basis for cell switching. It is understandable that the greater the number of neighboring cells that exist at the same time, the more frequency points need to be scanned and the greater the time-frequency resources consumed.
  • the base station needs to establish a neighbor relationship between adjacent cells, so it sends a monitor scan message to the terminal device to instruct the terminal device to perform neighbor cell detection scanning. work process.
  • the base station sends a monitor scanning message to the terminal device, and performs background signal interference detection based on the scanning results of the terminal device.
  • the base station in the Tetra system can be triggered to send a monitor scanning message to the terminal device, so that services can be carried out through the scanning results of the terminal device. Therefore, the scanning message may be sent from time to time by the communication system where the terminal device is located.
  • the channel parameter is the frequency point information of the neighboring cell, so that the terminal device can directly lock the frequency point of the neighboring cell channel and collect data.
  • the channel parameter can also be the frequency range of the neighboring cell.
  • step 201 can be executed in any time slot; in the idle time slot, when the radio frequency circuit of the terminal device is in a sleep state, other circuit units of the terminal device complete the reception of the monitor scan message.
  • the terminal device receives the monitor scan message in a receiving time slot or an idle time slot.
  • the terminal device If the monitor scan message is received in an idle time slot, the terminal device does not perform the scanning workflow corresponding to the monitor scan message and keeps the radio frequency circuit in a dormant state until the next reception time slot arrives.
  • the terminal device If the monitor scan message is received in the receiving time slot, the terminal device performs step 202; if the scanning work corresponding to all channel parameters in the monitor scanning message cannot be completed in the receiving time slot, the terminal device waits for the next receiving time slot to continue the process. Scanning works.
  • Step 202 In the receiving time slot, the terminal device scans the target channel according to the channel parameters in the scanning message.
  • the process of scanning a channel is the process of locking the frequency point of the channel and collecting data.
  • the target channel indicated by the radio frequency circuit is scanned according to the channel parameters in the monitor scanning message.
  • the receiving time slot when the terminal device is working refers to the receiving time slot when the terminal device is not turned off.
  • the receiving time slot can be the receiving time slot in the working mode of the terminal device, or it can also be the receiving time slot in the standby mode. gap.
  • the embodiments of the present application borrow radio frequency circuits to scan the corresponding target channel according to the channel parameters in the scanning message in the receiving time slot when the terminal device is working, so that the terminal device completes the processing during the receiving time slot.
  • the scanning work corresponding to the scanning message eliminates the need to perform scanning work in idle time slots due to the scanning message issued by the communication system, thereby reducing the power consumption of the terminal device.
  • Figure 3 shows another channel scanning method provided by the embodiment of the present application. process diagram. As shown in Figure 3, the channel scanning method includes the following steps 301-308.
  • Step 301 The terminal device receives the scanning message.
  • step 301 in this embodiment is similar to step 201 in the aforementioned embodiment shown in Figure 2, and will not be described again here.
  • Step 302 The terminal device adds channel parameters to the cache.
  • the terminal device After receiving the monitor scan message, the terminal device can add the channel parameters in the monitor scan message to the cache.
  • the terminal device can add the channel parameter to the cache through the protocol stack inside the terminal device.
  • the protocol stack controls the time point at which step 302 is performed.
  • the protocol stack when the radio frequency circuit of the terminal device is in a sleep state, the protocol stack does not perform the adding operation of channel parameters.
  • the channel parameter is used as the frequency point information of the neighboring cell for explanation.
  • the terminal device adds the frequency point information to the end of the cache queue.
  • the cache queue may be a preset queue or a temporary queue created after obtaining the channel parameters.
  • the cache queue is a first-in-first-out queue.
  • Step 303 The terminal device determines whether the current time slot is a receiving time slot.
  • the terminal device After adding the channel parameters to the cache, the terminal device can detect whether the current time slot is a receiving time slot.
  • step 304 is executed.
  • step 303 is executed again after a preset time interval.
  • the radio frequency circuit is kept in a sleep state.
  • the embodiment of the present application does not perform the scanning work corresponding to the monitor scanning message in the non-receiving time slot, and maintains the sleep state of the radio frequency circuit in the idle time slot. There is no need to frequently switch between the sleep state and the working state in the standby mode, and it is possible to increase the number of terminals.
  • the sleep time of the device reduces the power consumption of the terminal device.
  • the terminal device receives the monitor scan message before receiving the time slot.
  • the terminal device can receive the monitor scan message before receiving the time slot; and, after adding the channel parameters to the cache, the terminal device does not perform scanning work corresponding to the monitor scan message before receiving the time slot.
  • the time slot for receiving the monitor scan message is different from the time slot for performing the corresponding scanning workflow according to the monitor scan message, and no scanning work corresponding to the monitor scan message is performed in non-receiving time slots, so that the terminal device does not need to occupy other
  • the time slot resources carry out the corresponding scanning workflow.
  • Step 304 The terminal device determines whether the channel parameters exist in the cache.
  • step 303 determines whether the channel parameters exist in the cache.
  • FIG. 4 is a time period configuration diagram within a receiving time slot in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the working power of a receiving time slot.
  • a receiving time slot can be divided into four time periods T1 to T4, specifically including the time period T1 when the radio frequency circuit is turned on, the first time period T2 when the radio frequency circuit performs the data reception task, and the radio frequency circuit completes execution
  • the second time period T3 is the data receiving task and is in the working state
  • the time period T4 is when the radio frequency circuit is turned off.
  • the receiving time slot includes: the t1 time period when the radio frequency circuit is gradually turned on and the power gradually rises; the t2 time period when the radio frequency circuit is in working state and the power is maintained at about 0dBc; and
  • the RF receiving circuit and FGU circuit in the RF circuit begin to shut down in an orderly manner and the power gradually decreases during the t3 period; and the terminal device in the embodiment of the present application delays the shutdown of the RF circuit after the RF circuit completes the data reception task, thereby reducing the t3 time period.
  • the segment is divided into T3 and T4, and T3 is the time to delay turning off the radio frequency circuit, which is the above-mentioned second time period T3.
  • step 304 can be performed in the first time period T2, specifically before the radio frequency circuit performs the data receiving task, or after the radio frequency circuit performs the data receiving task; it can also be performed in the second time period T3.
  • step 305 If the channel parameter exists in the cache, perform step 305; if not, return to step 301.
  • the terminal device determines that the channel parameters do not exist in the cache, it waits for the base station to send the scanning message again and then performs step 301.
  • Step 305 The terminal device obtains channel parameters from the cache.
  • the terminal device determines that there are channel parameters in the buffer, after the terminal device completes receiving data in the first time period T2, the terminal device can perform steps 305 to 308 in the second time period T3.
  • the terminal device can obtain one frequency point information from the cache each time and then perform step 306; it can also calculate the remaining time that can be used for scanning based on the second time period T3, and then calculate the remaining time that can be used for scanning based on the remaining time. The number of scanned channels is then obtained, and the corresponding number of frequency point information is obtained, and then step 306 is performed.
  • Step 306 The terminal device scans the target channel.
  • the terminal device resets the frequency information in the scanning parameters of the radio frequency circuit to the frequency information obtained in step 305, and performs the target channel analysis on the target channel based on the reset frequency information.
  • the frequency point is locked, and finally the received signal strength indicator (RSSI) of the target channel is collected through the radio frequency receiving circuit.
  • RSSI received signal strength indicator
  • the terminal device resets the scanning parameters of the radio frequency circuit according to the channel parameter, and scans the target channel through the radio frequency circuit that resets the scanning parameters.
  • the terminal device When there are multiple frequency points obtained in step 305, the terminal device needs to scan the corresponding target channels one by one.
  • Step 307 The terminal device deletes the channel parameters corresponding to the target channel in the cache.
  • the terminal device may delete the channel parameters corresponding to the target channel in the cache. Specifically, the terminal device can complete one scan and perform a deletion operation, or it can perform the corresponding deletion operation after completing the scan of the target channel corresponding to all channel parameters.
  • Step 308 The terminal device reports the scanning results to the base station.
  • the terminal device After the terminal device completes scanning of the target channel, the terminal device can report the scanned RSSI information of the target channel to the base station, so that the base station can carry out services based on the field strength information.
  • step 307 and step 308 can be executed simultaneously or sequentially, and the specific order is not limited here.
  • the terminal device can return to executing step 303 to complete scanning of corresponding target channels for all channel parameters in the buffer in different receiving time slots.
  • the embodiment of the present application uses the tail time of the reception time slot to process the scan message, thereby saving the time slot resources and the radio frequency resources consumed by the radio frequency circuit operation, and reducing the power consumption of the terminal equipment; in addition, the embodiment of the present application also uses the communication system
  • the scan messages sent are processed according to the orderly time nodes. There is no need to wake up for detection in every time slot, which can extend the system sleep time to a greater extent.
  • FIG. 6 is a schematic diagram of time slots in the standby mode of the terminal device provided by the embodiment of the present application.
  • the terminal device processes the scanning message and performs the corresponding scanning workflow will be concentrated in Slot1 or the receiving time slot in the working mode, and the idle time slot It can be mainly used to perform step 601: sleep.
  • the terminal device can delay the time to turn off the radio frequency circuit and scan the target channel before turning off the radio frequency circuit; thus, there is no need to restart the radio frequency circuit, and the terminal equipment only needs to reset the frequency point information.
  • the time required for locking is greatly reduced, and the scanning of a neighboring area can be completed in a very short time.
  • the base station is configured with 8 neighboring cells to work together.
  • the terminal device moves at the edge of different cells, the terminal device will trigger neighbor cell detection.
  • each scan is continued at the end of the receiving time slot, which can reduce the time to start the radio frequency circuit by 8 times compared with the general method. It can be seen that using the channel scanning method provided by the embodiment of the present application can greatly improve the time-frequency utilization of the terminal.
  • the resource consumption situation within a multiframe period in standby mode is as follows:
  • the additional radio frequency resource time occupied by scanning two neighboring cells is 2nms
  • the additional working time of the radio frequency part circuit in the radio frequency circuit is 2*(m+n)ms.
  • the system of the terminal equipment The number of additional wake-ups is 0.
  • n is the radio frequency time required to scan a neighboring cell
  • m is the time to lock the frequency point.
  • the present application also provides a terminal device 700.
  • Figure 7 is a schematic structural diagram of the terminal device 700.
  • the terminal device 700 may specifically include:
  • the receiving unit 701 is configured to receive a scanning message.
  • the scanning message includes channel parameters.
  • the channel parameters are used to define the target channel to be scanned.
  • the scanning message is a scanning message issued by the communication system where the terminal device is located. ;
  • the scanning unit 702 is configured to scan the target channel according to the channel parameters through the radio frequency circuit within the receiving time slot when the terminal device is working.
  • a terminal device wherein the receiving unit 701 receives a scanning message, the scanning message contains channel parameters, and the channel parameters are used to indicate a target channel to be scanned; the scanning unit 702 uses a radio frequency circuit in the receiving time slot when the terminal device is working. , scan the target channel according to the channel parameters.
  • This solution uses radio frequency circuits to scan the corresponding target channel according to the channel parameters in the scanning message in the receiving time slot when the terminal equipment is working, so that the terminal equipment completes the scanning work corresponding to the scanning message when receiving the time slot. This eliminates the need to perform scanning work in idle time slots and reduces the power consumption of terminal equipment.
  • the receiving time slot includes a first time period when the radio frequency circuit performs a data reception task, and a second time period when the radio frequency circuit completes the data reception task and is in a working state; the scanning unit 702 is specifically configured to: scan the target channel according to the channel parameters through the radio frequency circuit during the second time period in the receiving time slot.
  • the terminal device 700 also includes: a delay unit 709, configured to delay turning off the radio frequency circuit that has completed the data reception task within the receiving time slot, wherein the radio frequency circuit is in this working state when it is not turned off. ;
  • the scanning unit is specifically used to: reset the scanning parameters of the radio frequency circuit according to the channel parameters; and scan the target channel by resetting the scanning parameters of the radio frequency circuit.
  • the receiving unit 701 is specifically configured to receive the scanning message in a receiving time slot before the receiving time slot or an idle time slot.
  • the terminal device 700 further includes: a cache unit 703, configured to add the channel parameters to the cache after receiving the scan message; an acquisition unit 704, configured to, within the receiving time slot, Obtain the channel parameters from the cache.
  • the terminal device 700 further includes: a sleep unit 705, configured to maintain the sleep state of the radio frequency circuit when the current time slot is an idle time slot.
  • a sleep unit 705 configured to maintain the sleep state of the radio frequency circuit when the current time slot is an idle time slot.
  • the terminal device 700 further includes: a deletion unit 706, configured to delete the channel parameter corresponding to the target channel in the cache.
  • the terminal device 700 also includes: a judgment unit 707, used to judge whether the channel parameter exists in the cache within the receiving time slot; a triggering unit 708, used to determine when the judgment unit determines whether the channel parameter exists in the buffer; When the channel parameter exists in the cache, the step of obtaining the channel parameter from the cache is triggered.
  • the channel parameters are frequency information of neighboring cells.
  • the scanning message is a monitor scanning message sent by the access network element in the land trunked radio Tetra system.
  • the working principle of the terminal device 700 provided in the embodiment of this application can be understood by referring to the corresponding content of the foregoing channel scanning method embodiment, and will not be repeated here.
  • the embodiment of the present application also provides a terminal device 800.
  • the terminal device 800 includes a processor 801 and a memory 803;
  • the memory stores instruction operations or codes
  • the processor is configured to communicate with the memory and execute instruction operations or codes in the memory to perform the channel scanning method as provided in FIG. 2 or FIG. 3 .
  • processor 801 and the memory 803 are connected through a bus 802.
  • the terminal equipment also includes a radio frequency receiving circuit and an FGU circuit.
  • Embodiments of the present application also provide a computer-readable storage medium that includes instructions that, when run on a computer, cause the computer to perform the channel scanning method as shown in Figure 2 or Figure 3 .
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请实施例公开了一种信道扫描方法及相关装置，该方法应用于终端设备，该终端设备包括射频电路；该方法包括：接收扫描消息，该扫描消息中包含信道参数，该信道参数用于指示待扫描的目标信道，该扫描消息为终端设备所在的通信系统下发的扫描消息；在终端设备工作的接收时隙内，通过该射频电路，根据该信道参数对该目标信道进行扫描。本申请通过在终端设备工作的接收时隙内，根据扫描消息中的信道参数对相应的目标信道进行扫描，以使得终端设备在接收时隙内完成与该扫描消息对应的扫描工作，无需因为通信系统下发的扫描消息在空闲时隙进行扫描工作，从而降低终端设备的功耗。

Description

信道扫描方法及相关装置 技术领域
本申请涉及通信技术领域，具体涉及一种信道扫描方法及相关装置。
背景技术
陆上集群无线电(terrestrial trunked radio，Tetra)是一种基于数字时分多址(time division multiple access，TDMA)的集群通信技术。在Tetra系统中，终端设备的工作除了接收和发射信息，还需要对邻区进行扫描，以便其他业务的开展。
现有技术中，在终端设备需要对邻区进行扫描时，Tetra系统会向终端设备下发监测器(monitor)扫描消息，终端设备的底层模块通过在终端设备的空闲时隙，根据monitor扫描消息完成对应的邻区扫描操作。
然而，终端设备从空闲时隙的休眠状态中唤醒以进行扫描工作，会减少休眠时间，从而增加了终端设备的功耗。
发明内容
有鉴于此，本申请提供一种信道扫描方法及相关装置，能够减少终端设备的功耗。
本申请第一方面提供一种信道扫描方法，包括：
接收扫描消息，所述扫描消息中包含信道参数，所述信道参数用于指示待扫描的目标信道，所述扫描消息为所述终端设备所在的通信系统下发的扫描消息；
在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
可选的，所述接收时隙包括所述射频电路执行数据接收任务的第一时间段，以及所述射频电路执行完所述数据接收任务且处于工作状态的第二时间段；所述在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描，包括：在所述接收时隙内的所述第二时间段，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
可选的，在所述通过所述射频电路，根据所述信道参数对所述目标信道进行扫描之前，所述方法还包括：在所述接收时隙内，延迟关闭执行完所述数据接收任务的所述射频电路，其中，所述射频电路未关闭时处于所述工作状态；所述通过所述射频电路，根据所述信道参数对所述目标信道进行扫描，包括：根据所述信道参数重置所述射频电路的扫描参数；通过重置所述扫描参数的所述射频电路对所述目标信道进行扫描。
可选的，所述接收扫描消息，包括：在所述接收时隙之前的接收时隙或者空闲时隙内接收所述扫描消息。
可选的，所述方法还包括：在所述接收扫描消息之后，将所述信道参数添加至缓存中；在所述接收时隙内，从所述缓存中获取所述信道参数。
可选的，在所述接收扫描消息后，所述方法还包括：若当前时隙为空闲时隙，则保持 所述射频电路的休眠状态。
可选的，在所述根据所述信道参数对所述目标信道进行扫描之后，所述方法还包括：删除所述缓存中与所述目标信道对应的所述信道参数。
可选的，在所述从所述缓存中获取所述信道参数之前，所述方法还包括：在所述接收时隙内，判断所述缓存中是否存在所述信道参数；若是，则触发所述从所述缓存中获取所述信道参数的步骤。
可选的，所述信道参数包括邻区的频点信息。
可选的，所述扫描消息为陆上集群无线电Tetra系统中的接入网网元发送的监测器monitor扫描消息。
本申请第二方面提供一种终端设备，所述终端设备包括射频电路；还包括：
接收单元，用于接收扫描消息，所述扫描消息中包含信道参数，所述信道参数用于指示待扫描的目标信道，所述扫描消息为所述终端设备所在的通信系统下发的扫描消息；
扫描单元，用于在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
可选的，所述接收时隙包括所述射频电路执行数据接收任务的第一时间段，以及所述射频电路执行完所述数据接收任务且处于工作状态的第二时间段；所述扫描单元具体用于：在所述接收时隙内的所述第二时间段，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
可选的，所述终端设备还包括：延时单元，用于在所述接收时隙内，延迟关闭执行完所述数据接收任务的所述射频电路，其中，所述射频电路未关闭时处于所述工作状态；所述扫描单元具体用于：根据所述信道参数重置所述射频电路的扫描参数；通过重置所述扫描参数的所述射频电路对所述目标信道进行扫描。
可选的，所述接收单元具体用于：在所述接收时隙之前的接收时隙或者空闲时隙内接收所述扫描消息。
可选的，所述终端设备还包括：缓存单元，用于在所述接收扫描消息之后，将所述信道参数添加至缓存中；获取单元，用于在所述接收时隙内，从所述缓存中获取所述信道参数。
可选的，所述终端设备还包括：休眠单元，用于当当前时隙为空闲时隙时，保持所述射频电路的休眠状态。
可选的，所述终端设备还包括：删除单元，用于删除所述缓存中与所述目标信道对应的所述信道参数。
可选的，所述终端设备还包括：判断单元，用于在所述接收时隙内，判断所述缓存中是否存在所述信道参数；触发单元，用于当所述判断单元确定所述缓存中存在所述信道参数时，是，触发所述从所述缓存中获取所述信道参数的步骤。
可选的，所述信道参数包括邻区的频点信息。
可选的，所述扫描消息为陆上集群无线电Tetra系统中的接入网网元发送的监测器monitor扫描消息。
本申请第三方面提供一种终端设备，包括：
处理器、存储器；
所述存储器中存储有指令操作或代码；
所述处理器配置为与所述存储器通信，并执行所述存储器中的指令操作或代码以执行第一方面任意一项所提供的信道扫描方法。
本申请第四方面提供一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括指令，当所述指令在计算机上运行时，使得计算机执行如第一方面任意一项所提供的信道扫描方法。
一种信道扫描方法及相关装置，方法包括：接收扫描消息，该扫描消息中包含信道参数，该信道参数用于指示待扫描的目标信道，该扫描消息为终端设备所在的通信系统下发的消息；在终端设备工作的接收时隙内，通过射频电路，根据该信道参数对该目标信道进行扫描。本方案通过在终端设备工作的接收时隙内，借用射频电路，根据扫描消息中的信道参数对相应的目标信道进行扫描，以使得终端设备在接收时隙内完成与扫描消息对应的扫描工作，从而无需因为通信系统下发的扫描消息在空闲时隙进行扫描工作，进而降低终端设备的功耗。
附图说明
图1为一个实施例中终端设备待机模式下的时隙示意图；
图2为本申请实施例提供的一种信道扫描方法的流程示意图；
图3为本申请实施例提供的另一信道扫描方法的流程示意图；
图4为本申请实施例中一个接收时隙内的时间段配置图；
图5为一个实施例中一种接收时隙的工作功率示意图；
图6为本申请实施例提供的终端设备待机模式下的时隙示意图；
图7为本申请实施例提供的一种终端设备的结构示意图；
图8为本申请实施例提供的另一终端设备的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，下面结合附图，对本申请的实施例进行描述。显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着新应用场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
陆上集群无线电(terrestrial trunked radio，Tetra)系统，即Tetra数字集群通信系统，是一种基于数字时分多址(time division multiple access，TDMA)技术的集群通信系统。
在当前Tetra系统下，终端设备的工作除了接收和发射信息，还需要对Tetra系统下发的monitor扫描消息进行处理。由于Tetra系统下发monitor扫描消息的触发条件有多种，导致该monitor扫描消息的下发时间不确定。为了处理Tetra系统不定期下发的monitor 扫描消息，终端设备需要额外配置的时隙进行monitor扫描消息的接收，以及开启射频电路进行相应的扫描工作，消耗较多的射频资源。
具体请参阅图1，图1为一个实施例中Tetra终端集群模式待机情况下的时隙示意图，在终端设备的待机模式下，一帧中的四个时隙配置为一个接收时隙和三个空闲时隙，分别对应图中的Slot1和Slot2至Slot4。
在Slot1中，终端设备进行接收工作，当终端设备接收到monitor扫描消息时，将该monitor扫描消息添加至缓存中。
在Slot2至Slot4中的任一时隙内，终端设备的工作流程包括：
步骤101、终端设备将射频电路从休眠状态中唤醒，切换为工作状态，并检测是否存在待处理或待接收的monitor扫描消息；
需要说明的是，本申请文档中所提及的射频电路是终端设备在接收时隙内工作所需要用到的电路，具体可以包括射频接收电路和频率发生单元(frequency benerator unit，FGU)电路。
步骤102、若检测到存在该monitor扫描消息，则通过该射频电路进行与该monitor扫描消息对应的扫描流程处理。
申请人研究发现，在步骤102的扫描流程中，终端设备需要配置射频开关，锁定与该monitor扫描消息对应的待扫描信道的频点并进行数据采集，待扫描流程结束后再关闭射频开关，完成一次扫描操作。由于存在射频的开关动作，待扫描信道的频点锁定会耗时6ms左右，再加上信号采集、数据处理的过程，每个频点的扫描将会占用一个时隙的资源(Tetra系统1个时隙14.167ms)。
因此，当monitor扫描消息中指示的待扫描信道越多，占用的射频资源更多，相应的功耗也会更大。
申请人以待机模式下1个复帧的时间为计算范围，计算得到由于monitor扫描消息消耗的资源如表1所示。其中，1个复帧的时间等于18帧的时间。
待扫描信道个数 占用时隙资源 射频工作时间(ms) 额外唤醒次数
2 2 28 18*3＝54
4 4 56.67 18*3＝54
8 8 113 18*3＝54
表1
结合表1可以得知，由于monitor扫描消息下发时间的不确定性，终端设备需要在每一个空闲时隙都从休眠状态中唤醒以检测是否有monitor扫描消息需要进行接收和处理；而终端设备的休眠通常是在空闲时隙内进行；终端设备的射频电路频繁地切换休眠状态和工作状态，将大大削弱待机休眠的实际省电效果。
可以理解的是，通信系统定期下发的一些直接或间接指示终端设备在空闲时隙执行扫描操作的扫描消息，同样会导致上述缺陷。例如，终端设备注册到某个小区后，小区系统 会下发一次包含频点信息的扫描消息，终端设备将根据该频点信息进行周期性扫描，且该扫描操作能够在空闲时隙执行；因此，处理该扫描消息同样会削弱终端设备在空闲时隙的休眠省电效果。
综上所述，上述方案中在空闲时隙扫描一个频点需要占用一个时隙资源，并且会恶化终端设备的休眠时间，不利于终端设备省电。为了优化扫描过程带来的资源消耗，本申请提供一种信道扫描方法及相关装置，能够提高终端设备时频资源利用率，同时还能够降低终端设备的功耗。
本申请实施例提供的信道扫描方法可以应用于Tetra系统中的终端设备。
本申请任一实施例中所提及的“终端设备”，均指代Tetra系统下的终端设备，具体可以是手持终端，例如对讲机和智能手机，也可以是车载终端，例如车载导航仪。
需要说明的是，Tetra系统通常用于提供指挥、调度和数据传输业务，同时，由于Tetra系统对多种服务功能的支持以及灵活的组网方式，许多新的应用，例如车辆定位、图像传输、移动互联网、数据库查询等，均已在Tetra系统中得到实现。
可以理解的是，本申请实施例提供的信道扫描方法也可以应用于其他基于TDMA技术的通信系统中，例如警用数字集群(police digital trunking，PDT)系统或(digital mobile radio，DMR)系统；具体可以应用于终端设备需要根据通信系统下发的扫描消息或其他指示消息，进行信道扫描的场景。以下以应用于Tetra系统的终端设备为例进行说明。
请参阅图2，图2为本申请实施例提供的一种信道扫描方法的流程示意图，该方法具体包括：
步骤201、终端设备接收扫描消息。
其中，该扫描消息中包含信道参数，该信道参数用于指示待扫描的目标信道，该扫描消息为该终端设备所在的通信系统下发的扫描消息。
可选的，该扫描消息为Tetra系统中的接入网网元不定期发送的monitor扫描消息。具体地，该接入网网元可以为基站。本实施例中以扫描消息为monitor扫描消息，接入网网元为基站为例进行说明。
可选的，该扫描消息为该终端设备注册到某一小区系统时，该小区系统下发的扫描消息。
在一种可能的实现中，终端设备在跨区移动过程中会出现小区切换过程。在当前小区服务期间，终端设备根据基站下发的monitor扫描消息中的配置，周期性的扫描相邻小区的频点，以提供小区切换的依据。可以理解的是，同时存在的邻区数量越多，需要扫描的频点也就也多，消耗的时频资源就更大。
在另外一些可能的实现中，在通信系统的网络运营和部署中，基站需要建立相邻小区间关系的邻区关系，因此向终端设备下发monitor扫描消息，指示终端设备进行邻区检测的扫描工作流程。
在另外一些可能的实现中，由于通信业务的需要，基站向终端设备下发monitor扫描消息，根据终端设备的扫描结果进行背景信号干扰检测。
在以上数种情况下，均能够触发Tetra系统中的基站向终端设备下发monitor扫描消 息，以便通过终端设备的扫描结果开展业务。因此，该扫描消息可以为该终端设备所在的通信系统不定期下发的消息。
可选的，该信道参数为邻区的频点信息，以便终端设备直接锁定邻区信道的频点并进行数据采集。
可选的，该信道参数还可以为邻区的频率范围。
可以理解的是，步骤201在任一时隙内均能执行；在空闲时隙内，终端设备的射频电路处于休眠状态的情况下，终端设备的其他电路单元完成该monitor扫描消息的接收。
可选的，终端设备在接收时隙或空闲时隙接收该monitor扫描消息。
若在空闲时隙内接收该monitor扫描消息，则终端设备不进行与该monitor扫描消息对应的扫描工作流程，保持射频电路处于休眠状态，直至下一个接收时隙到来。
若在接收时隙接收该monitor扫描消息，则终端设备执行步骤202；若在该接收时隙内无法完成该monitor扫描消息中所有信道参数对应的扫描工作，则等待下一个接收时隙继续进行该扫描工作。
步骤202、在接收时隙内，终端设备根据扫描消息中的信道参数对目标信道进行扫描。
需要说明的是，对一个信道扫描的流程即为对该信道的频点进行锁定，并采集数据的过程。
具体地，在终端设备工作的接收时隙内，通过射频电路，根据monitor扫描消息中的信道参数对其指示的目标信道进行扫描。
其中，终端设备工作的接收时隙是指终端设备未关机状态下的接收时隙，具体地，该接收时隙可以为终端设备工作模式下的接收时隙，也可以为待机模式下的接收时隙。
综上所述，本申请实施例通过在终端设备工作的接收时隙内，借用射频电路，根据扫描消息中的信道参数对相应的目标信道进行扫描，以使得终端设备在接收时隙时完成与扫描消息对应的扫描工作，从而无需因为通信系统下发的扫描消息在空闲时隙进行扫描工作，降低了终端设备的功耗。
为了更好地理解本申请实施例所提供的信道扫描方法，以下将详细描述本申请实施例提供的信道扫描方法，具体请参阅图3，图3为本申请实施例提供的另一信道扫描方法的流程示意图。如图3所示，该信道扫描方法包括以下的步骤301-308。
步骤301、终端设备接收扫描消息。
本实施例中的步骤301的具体实施与前述图2所示实施例中的步骤201类似，具体此处不再赘述。
步骤302、终端设备添加信道参数至缓存。
接收到该monitor扫描消息后，终端设备可以将该monitor扫描消息中的信道参数添加至缓存中。
具体地，终端设备可以在接收该monitor扫描消息后，通过终端设备内部的协议栈将该信道参数添加至缓存中。其中，由该协议栈控制执行步骤302的时间点。
在一种可能的实现中，当终端设备的射频电路处于休眠状态时，该协议栈不进行信道参数的添加操作。
本实施例中，以该信道参数为邻区的频点信息进行说明。
在一种可能的实现中，终端设备将该频点信息添加至缓存队列的队尾。
其中，该缓存队列可以是预设队列，也可以是获取信道参数后创建的临时队列。
可选的，该缓存队列为先进先出队列。
步骤303、终端设备判断当前时隙是否为接收时隙。
在添加信道参数至缓存后，终端设备可以进行当前时隙是否为接收时隙的检测。
若当前时隙为接收时隙，则执行步骤304。
若当前时隙不为接收时隙，则不进行与该扫描消息对应的扫描工作，并在预设时间间隔后，再次执行步骤303。
可选的，若当前时隙为空闲时隙，则保持所述射频电路的休眠状态。
本申请实施例通过在非接收时隙不进行与该monitor扫描消息对应的扫描工作，在空闲时隙内保持射频电路的休眠状态，无需在待机模式下频繁切换休眠状态和工作状态，能够增加终端设备的休眠时间，减少终端设备的功耗。
可选的，终端设备在接收时隙前接收该monitor扫描消息。
进一步地，终端设备可以在接收时隙前接收该monitor扫描消息；并且，在添加信道参数至缓存后，接收时隙前，不进行与该monitor扫描消息对应的扫描工作。
其中，接收该monitor扫描消息的时隙和根据该monitor扫描消息进行对应扫描工作流程的时隙不同，且在非接收时隙不进行与该monitor扫描消息对应的扫描工作，从而终端设备无需占用其他时隙的资源进行对应的扫描工作流程。
步骤304、终端设备判断缓存中是否存在信道参数。
在步骤303的判断结果为当前时隙为接收时隙的情况下，终端设备进一步判断缓存中是否存在信道参数。
可以参阅图4和图5，图4为本申请实施例中一个接收时隙内的时间段配置图，图5为一种接收时隙的工作功率示意图。
如图4所示，一个接收时隙可以分为4个时间段T1至T4，具体包括开启射频电路的时间段T1，该射频电路执行数据接收任务的第一时间段T2，该射频电路执行完所述数据接收任务且处于工作状态的第二时间段T3，以及关闭射频电路的时间段T4。
可以理解的是，如图5所示，一般方法中，接收时隙包括：射频电路逐步开启，功率逐渐上升的t1时间段；射频电路处于工作状态，功率维持在0dBc左右的t2时间段；以及射频电路中的射频接收电路和FGU电路开始有序关闭，功率逐渐下降的t3时间段；而本申请实施例中的终端设备在射频电路完成数据接收任务后，延迟关闭射频电路，从而将t3时间段划分为T3和T4，T3为延迟关闭射频电路的时间，也即上述的第二时间段T3。通过在第二时间段T3进行与该monitor扫描消息对应的扫描工作，可以节约时隙资源。
具体地，步骤304可以在第一时间段T2中执行，具体可以在射频电路执行数据接收任务前执行，也可以在射频电路执行数据接收任务后执行；还可以在第二时间段T3中执行。
若缓存中存在信道参数，则执行步骤305；若不存在，则返回执行步骤301。
当终端设备确定缓存中不存在信道参数时，等待基站再次下发扫描消息后执行步骤 301。
步骤305、终端设备从缓存中获取信道参数。
在该接收时隙内，终端设备判断缓存中存在信道参数的情况下，终端设备在第一时间段T2完成接收数据工作后，终端设备可以在第二时间段T3中执行步骤305至308。
可选的，终端设备可以每次从缓存中获取1个频点信息后执行步骤306；也可以根据第二时间段T3计算得到能够用于扫描扫描的剩余时间后，再根据该剩余时间计算能够扫描的信道数量，进而获取对应数量的频点信息，再执行步骤306。
步骤306、终端设备扫描目标信道。
在该接收时隙的第二时间段T3内，终端设备将射频电路的扫描参数中的频点信息重置为步骤305中获取的频点信息，并根据重置后的频点信息对目标信道进行频点锁定，最后通过射频接收电路采集该目标信道的接收信号强度指示(received signal strength indicator，RSSI)。
可以理解的是，当信道参数为其他信息时，终端设备根据该信道参数重新射频电路的扫描参数，并通过重置扫描参数的射频电路扫描目标信道。
当步骤305中获取的频点信息为多个时，终端设备需要逐个进行对应目标信道的扫描。
步骤307、终端设备删除缓存中与目标信道对应的信道参数。
在终端设备完成对一个或多个目标信道的扫描后，终端设备可以删除缓存中与该目标信道对应的信道参数。具体地，终端设备可以完成一次扫描执行一次删除操作，也可以在完成所有信道参数对应的目标信道的扫描后执行对应的删除操作。
步骤308、终端设备将扫描结果上报至基站。
在终端设备完成对目标信道的扫描后，终端设备可以将扫描得到的目标信道的RSSI信息上报至基站，以使得基站能够根据该场强信息开展业务。
可以理解的是，步骤307和步骤308的执行顺序可以是同时执行，也可以是先后执行，具体顺序此处不作限定。
另外，由于一个时隙内的时隙资源有限，一个接收时隙的尾部时隙资源可能无法完成对扫描信息中所有频点信息的扫描。因此，在执行步骤307或步骤308后，终端设备可以返回执行步骤303，以在不同的接收时隙完成对缓存中所有信道参数的对应目标信道的扫描工作。
本申请实施例通过利用接收时隙的尾部时间来处理扫描消息，节约了时隙资源和射频电路工作耗费的射频资源，减小终端设备的功耗；另外，本申请实施例还通过将通信系统下发的扫描消息按照有序的时间节点进行处理，无需每个时隙都唤醒检测，可以更大程度的延长系统休眠时间。
为了进一步说明本申请实施例的有益效果，请参图6，图6为本申请实施例提供的终端设备待机模式下的时隙示意图。
从图6中可以看出，采用本申请实施例提供的信道扫描方法后，终端设备处理扫描消息，以及进行对应的扫描工作流程将集中在Slot1或工作模式下的接收时隙内，空闲时隙可以主要用于执行步骤601：休眠。
另外，由于在接收时隙内，终端设备可以通过延迟关闭射频电路的时间，在关闭射频电路前进行对目标信道的扫描；从而无需重新启动射频电路，终端设备仅需要重置频点信息即可进行扫描频点的锁定，锁定所需时间大大减小，一个邻区的扫描就可以在很短的时间能完成。
例如，基站配置8个邻区协同工作，当终端设备在不同小区的边缘进行移动时，终端设备将触发邻区检测。若采用一般方法进行扫描，每个信道扫描需要占用一个时隙的时间资源，也即14.167ms，完成8个邻区的扫描就需要消耗14.167*8＝113ms。而采用本申请实施例中提供的信道扫描方法，每次扫描续接在接收时隙的尾部进行，可以比一般方法减少8次启动射频电路的时间。可知，采用本申请实施例提供的信道扫描方法能够极大地改善终端的时频利用率。
采用本申请实施例提供的信道扫描方法后，待机模式下一个复帧时间内资源耗费的情况如下：
当邻区个数为2时，扫描2个邻区所额外占用射频资源的时间为为2nms，射频电路中的射频部分电路的额外工作时间为2*(m+n)ms，终端设备的系统额外唤醒次数为0。
其中，n为扫描一个邻区所需要耗费的射频时间，m为锁定频点的时间。
进一步地，采用本申请实施例提供的信道扫描方法后的资源耗费优化效果如下：
当邻区个数为2时，采用本申请实施例提供的信道扫描方法将节约(2-2n/14)个时隙资源，(2*14-2*(m+n))ms的射频资源，以及终端设备在空闲时隙内无需从休眠状态唤醒带来的休眠时间优化。
当邻区个数为4或8时，与上述计算过程类似，此处不再赘述。
结合本申请实施例提供的信道扫描方法，本申请还提供一种终端设备700，具体请参阅图7，图7为该终端设备700的结构示意图，该终端设备700具体可以包括：
接收单元701，用于接收扫描消息，所述扫描消息中包含信道参数，所述信道参数用于定义待扫描的目标信道，所述扫描消息为所述终端设备所在的通信系统下发的扫描消息；
扫描单元702，用于用于在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
一种终端设备，其中，接收单元701接收扫描消息，该扫描消息中包含信道参数，该信道参数用于指示待扫描的目标信道；扫描单元702在终端设备工作的接收时隙内，通过射频电路，根据该信道参数对该目标信道进行扫描。本方案通过在终端设备工作的接收时隙内，借用射频电路，根据扫描消息中的信道参数对相应的目标信道进行扫描，以使得终端设备在接收时隙时完成与扫描消息对应的扫描工作，从而无需在空闲时隙进行扫描工作，降低终端设备的功耗。
可选的，所述接收时隙包括所述射频电路执行数据接收任务的第一时间段，以及所述射频电路执行完所述数据接收任务且处于工作状态的第二时间段；所述扫描单元702具体用于：在所述接收时隙内的所述第二时间段，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
可选的，该终端设备700还包括：延时单元709，用于在该接收时隙内，延迟关闭执 行完该数据接收任务的该射频电路，其中，该射频电路未关闭时处于该工作状态；该扫描单元具体用于：根据该信道参数重置该射频电路的扫描参数；通过重置该扫描参数的该射频电路对该目标信道进行扫描。
可选的，所述接收单元701具体用于：在所述接收时隙之前的接收时隙或者空闲时隙内接收所述扫描消息。
可选的，所述终端设备700还包括：缓存单元703，用于在所述接收扫描消息之后，将所述信道参数添加至缓存中；获取单元704，用于在所述接收时隙内，从所述缓存中获取所述信道参数。
可选的，所述终端设备700还包括：休眠单元705，用于当当前时隙为空闲时隙时，保持所述射频电路的休眠状态。
可选的，所述终端设备700还包括：删除单元706，用于删除所述缓存中与所述目标信道对应的所述信道参数。
可选的，所述终端设备700还包括：判断单元707，用于在所述接收时隙内，判断所述缓存中是否存在所述信道参数；触发单元708，用于当所述判断单元确定所述缓存中存在所述信道参数时，触发所述从所述缓存中获取所述信道参数的步骤。
可选的，所述信道参数为邻区的频点信息。
可选的，所述扫描消息为陆上集群无线电Tetra系统中的接入网网元发送的监测器monitor扫描消息。
本申请实施例提供的终端设备700，其工作原理可以参阅前述信道扫描方法实施例部分的相应内容进行理解，此处不再重复赘述。
本申请实施例还提供一种终端设备800，如图8所示，该终端设备800包括处理器801和存储器803；
其中，该存储器中存储有指令操作或代码；
该处理器配置为与该存储器通信，并执行所述存储器中的指令操作或代码以执行如图2或图3所提供的信道扫描方法。
可选的，处理器801和存储器803通过总线802连接。
可选的，终端设备还包括射频接收电路和FGU电路。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质包括指令，当该指令在计算机上运行时，使得计算机执行如图2或图3所提供的信道扫描方法。
以上对本申请实施例进行了详细介绍，本申请实施例方法中的步骤可以根据实际需要进行顺序调度、合并或删减；本申请实施例装置中的模块可以根据实际需要进行划分、合并或删减。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请实施例所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单 元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请实施例各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请实施例各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (22)

  1. 一种信道扫描方法，其特征在于，所述方法应用于终端设备，所述终端设备包括射频电路，所述方法包括：
    接收扫描消息，所述扫描消息中包含信道参数，所述信道参数用于指示待扫描的目标信道，所述扫描消息为所述终端设备所在的通信系统下发的扫描消息；
    在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
  2. 根据权利要求1所述的方法，其特征在于，所述接收时隙包括所述射频电路执行数据接收任务的第一时间段，以及所述射频电路执行完所述数据接收任务且处于工作状态的第二时间段；所述在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描，包括：
    在所述接收时隙内的所述第二时间段，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
  3. 根据权利要求2所述的方法，其特征在于，在所述通过所述射频电路，根据所述信道参数对所述目标信道进行扫描之前，所述方法还包括：
    在所述接收时隙内，延迟关闭执行完所述数据接收任务的所述射频电路，其中，所述射频电路未关闭时处于所述工作状态；
    所述通过所述射频电路，根据所述信道参数对所述目标信道进行扫描，包括：
    根据所述信道参数重置所述射频电路的扫描参数；
    通过重置所述扫描参数的所述射频电路对所述目标信道进行扫描。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述接收扫描消息，包括：
    在所述接收时隙之前的接收时隙或者空闲时隙内接收所述扫描消息。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述方法还包括：
    在所述接收扫描消息之后，将所述信道参数添加至缓存中；
    在所述接收时隙内，从所述缓存中获取所述信道参数。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，在所述接收扫描消息后，所述方法还包括：
    若当前时隙为空闲时隙，则保持所述射频电路的休眠状态。
  7. 根据权利要求5所述的方法，其特征在于，在所述根据所述信道参数对所述目标信道进行扫描之后，所述方法还包括：
    删除所述缓存中与所述目标信道对应的所述信道参数。
  8. 根据权利要求5所述的方法，其特征在于，在所述从所述缓存中获取所述信道参数之前，所述方法还包括：
    在所述接收时隙内，判断所述缓存中是否存在所述信道参数；
    若是，则触发所述从所述缓存中获取所述信道参数的步骤。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述信道参数包括邻区的频点信息。
  10. 根据权利要求1至8中任一项所述的方法，其特征在于，所述扫描消息为陆上集群无线电Tetra系统中的接入网网元发送的监测器monitor扫描消息。
  11. 一种终端设备，其特征在于，所述终端设备包括射频电路，所述终端设备包括：
    接收单元，用于接收扫描消息，所述扫描消息中包含信道参数，所述信道参数用于指示待扫描的目标信道，所述扫描消息为所述终端设备所在的通信系统下发的扫描消息；
    扫描单元，用于在所述终端设备工作的接收时隙内，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
  12. 根据权利要求11所述的终端设备，其特征在于，所述接收时隙包括所述射频电路执行数据接收任务的第一时间段，以及所述射频电路执行完所述数据接收任务且处于工作状态的第二时间段；所述扫描单元具体用于：
    在所述接收时隙内的所述第二时间段，通过所述射频电路，根据所述信道参数对所述目标信道进行扫描。
  13. 根据权利要求12所述的终端设备，其特征在于，所述终端设备还包括：
    延时单元，用于在所述接收时隙内，延迟关闭执行完所述数据接收任务的所述射频电路，其中，所述射频电路未关闭时处于所述工作状态；
    所述扫描单元具体用于：
    根据所述信道参数重置所述射频电路的扫描参数；
    通过重置所述扫描参数的所述射频电路对所述目标信道进行扫描。
  14. 根据权利要求11至13中任一项所述的终端设备，其特征在于，所述接收单元具体用于：
    在所述接收时隙之前的接收时隙或者空闲时隙内接收所述扫描消息。
  15. 根据权利要求11至14中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    缓存单元，用于在所述接收扫描消息之后，将所述信道参数添加至缓存中；
    获取单元，用于在所述接收时隙内，从所述缓存中获取所述信道参数。
  16. 根据权利要求11至15中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    休眠单元，用于当当前时隙为空闲时隙时，保持所述射频电路的休眠状态。
  17. 根据权利要求15所述的终端设备，其特征在于，所述终端设备还包括：
    删除单元，用于删除所述缓存中与所述目标信道对应的所述信道参数。
  18. 根据权利要求15所述的终端设备，其特征在于，所述终端设备还包括：
    判断单元，用于在所述接收时隙内，判断所述缓存中是否存在所述信道参数；
    触发单元，用于当所述判断单元确定所述缓存中存在所述信道参数时，触发所述从所述缓存中获取所述信道参数的步骤。
  19. 根据权利要求11至18中任一项所述的终端设备，其特征在于，所述信道参数包括邻区的频点信息。
  20. 根据权利要求11至18中任一项所述的终端设备，其特征在于，所述扫描消息为陆 上集群无线电Tetra系统中的接入网网元发送的监测器monitor扫描消息。
  21. 一种终端设备，其特征在于，所述终端设备包括：
    处理器、存储器；
    所述存储器中存储有指令操作或代码；
    所述处理器配置为与所述存储器通信，并执行所述存储器中的指令操作或代码以执行权利要求1至10中任一所述的方法。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括指令，当所述指令在计算机上运行时，使得计算机执行如权利要求1至10中任一所述的方法。
PCT/CN2022/104590 2022-07-08 2022-07-08 信道扫描方法及相关装置 Ceased WO2024007294A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5627882A (en) * 1993-06-02 1997-05-06 U.S. Philips Corporation Enhanced power saving method for hand-held communications system and a hand-held communications system therefor
US20130308512A1 (en) * 2012-05-17 2013-11-21 Samsung Electronics Co. Ltd. Portable terminal and method for scanning access points
CN111327375A (zh) * 2018-12-14 2020-06-23 海能达通信股份有限公司 一种信道扫描的方法、通信终端及存储介质

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5627882A (en) * 1993-06-02 1997-05-06 U.S. Philips Corporation Enhanced power saving method for hand-held communications system and a hand-held communications system therefor
US20130308512A1 (en) * 2012-05-17 2013-11-21 Samsung Electronics Co. Ltd. Portable terminal and method for scanning access points
CN111327375A (zh) * 2018-12-14 2020-06-23 海能达通信股份有限公司 一种信道扫描的方法、通信终端及存储介质

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