Communication method and communication device

Abstract

Provided are a communication method and a communication device. The method comprises: a terminal device performs cell selection or reselection on the basis of signal quality of carriers associated with one or more cells, the one or more cells comprising a first cell, and the first cell being associated with a plurality of carriers.

Description

Communication methods and communication equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Technology

[0002] In future communication systems, a single cell may contain multiple carriers. Currently, there is no suitable solution for how terminal devices should perform cell selection or reselection operations in this scenario. If different communication devices perform cell selection or reselection operations according to different rules, the reliability of the cell selection or reselection process will be reduced. Summary of the Invention

[0003] This application provides a communication method and a communication device. The various aspects covered by this application are described below.

[0004] In a first aspect, a communication method is provided, comprising: a terminal device performing cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein the one or more cells include a first cell, the first cell being associated with multiple carriers.

[0005] In a second aspect, a communication method is provided, comprising: a network device sending configuration information to a terminal device, the configuration information being configured for the terminal device to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein the one or more cells include a first cell, the first cell being associated with multiple carriers.

[0006] Thirdly, a communication device is provided, the communication device being a terminal device, the communication device comprising: a processing unit configured to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein the one or more cells include a first cell, the first cell being associated with multiple carriers.

[0007] Fourthly, a communication device is provided, the communication device being a network device, the communication device comprising: a communication unit for sending configuration information to a terminal device, the configuration information being configured for the terminal device to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein the one or more cells include a first cell, the first cell being associated with multiple carriers.

[0008] Fifthly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals, so that the communication device performs the method as described in the first or second aspect.

[0009] A sixth aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in the first or second aspect.

[0010] A seventh aspect provides a chip including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in the first or second aspect.

[0011] Eighthly, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in the first or second aspect.

[0012] Ninth aspect, a computer program product is provided, including a program that causes a computer to perform the method as described in the first or second aspect.

[0013] In a tenth aspect, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0014] In cases where a cell is associated with multiple carriers, embodiments of this application clarify that cell selection or reselection is performed based on the signal quality of one or more carriers associated with the cell, thereby improving the reliability of cell selection or reselection. Attached Figure Description

[0015] Figure 1 is an example architecture diagram of a wireless communication system to which embodiments of this application can be applied.

[0016] Figure 2 is a schematic flowchart of a communication method provided in one embodiment of this application.

[0017] Figure 3 is a schematic flowchart of a communication method provided in another embodiment of this application.

[0018] Figure 4 is a schematic diagram of the structure of a communication device provided in one embodiment of this application.

[0019] Figure 5 is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0020] Figure 6 is a schematic diagram of an apparatus applicable to embodiments of this application. Detailed Implementation

[0021] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0022] Communication system

[0023] The technical solutions of this application embodiment can be applied to various communication systems. For example, the embodiments of this application can be applied to Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), New Radio (NR), evolution systems of NR, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5th-generation (5G) systems. The embodiments of this application can also be applied to other communication systems, such as 6th-generation (6G) mobile communication systems, or future communication systems such as satellite communication systems.

[0024] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can support not only traditional cellular communication but also one or more other types of communication. For example, a communication system can support one or more of the following communication methods: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), enhanced machine-type communication (eMTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to communication systems that support the above-mentioned communication methods.

[0025] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0026] The communication system in this application embodiment can be applied to unlicensed spectrum. This unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in this application embodiment can also be applied to licensed spectrum. This licensed spectrum can also be considered a dedicated spectrum.

[0027] The technical solutions of this application embodiment can be applied to various Internet of Things (IoT) communication systems. For example, this technical solution can be applied to narrowband Internet of Things (NB-IoT) communication systems. As another example, this technical solution can be applied to ambient IoT (AIoT) communication systems.

[0028] Figure 1 illustrates an example system architecture of a communication system 100 applicable to embodiments of this application. The communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The terminal device 120 can access a network (such as a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity; this embodiment of the application does not limit this.

[0029] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the terminal device can act as a base station. For example, the terminal device can act as a scheduling entity, providing sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems. For instance, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through base stations.

[0030] In some embodiments, the terminal device may also be a device in AIoT (such as a reader) to meet the needs of certain scenarios.

[0031] The network device in this application embodiment can also be an access network device or a radio access network device, such as a base station. The network device in this application embodiment can refer to a radio access network (RAN) node or device that connects a terminal device to a wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), V2X, and M2M communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0032] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0033] In some deployments, the network device in this application embodiment may refer to a CU or a DU; or, the network device may include both a CU and a DU. The gNB may also include an AAU.

[0034] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0035] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform such as a cloud platform.

[0036] Figure 1 illustrates an exemplary network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and the communication system 100 may also include other numbers of terminal devices 120.

[0037] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 can be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities. This application embodiment does not limit this.

[0038] Community selection or reselection

[0039] In NR systems, for terminal devices in the Radio Resource Control (RRC) idle state (RRC_IDLE) or RRC inactive state (RRC_INACTIVE), the prerequisite for camping on a particular cell is that the cell's signal quality (including reference signal received power (RSRP) and reference signal received quality (RSRQ) measurements) meets the cell selection S criterion. After selecting a suitable cell, the terminal device will continuously evaluate cell reselection. The measurements performed for cell reselection evaluation are divided and performed according to the reselection priority of each frequency point. The specific details are as follows.

[0040] For high-priority frequency points, neighbor cell measurements are always performed.

[0041] For co-frequency points, when the RSRP and RSRQ values ​​of the serving cell are both higher than the co-frequency measurement threshold configured by the network, the terminal device can stop co-frequency neighbor cell measurement; otherwise, measurement must be performed.

[0042] For frequency points of the same and lower priorities, when the RSRP and RSRQ values ​​of the serving cell are both higher than the inter-frequency measurement threshold configured by the network, the terminal device can stop the neighbor cell measurement of the same and lower priorities frequency points; otherwise, the measurement must be performed.

[0043] After obtaining multiple candidate cells through measurement, the process of determining the target cell for cell reselection is basically the same as in the LTE system, adopting the principle of prioritizing the reselection of cells on high-priority frequency points. The specific details are as follows.

[0044] For cell reselection on high-priority frequency points, the signal quality must be above a certain threshold for a specified duration, and the terminal device must remain in the source cell for at least 1 second.

[0045] For cell reselection on the same frequency and priority frequency points, the R criterion (ordered according to RSRP) must be met. The signal quality of the new cell must be better than that of the current cell for a specified duration, and the terminal device must remain in the source cell for a duration of not less than 1 second.

[0046] For cell reselection on low-priority frequency points, there must be no high-priority or same-priority frequency point cells meeting the requirements, the source cell signal quality must be below a certain threshold, the cell signal quality on the low-priority frequency point must be above a certain threshold and last for a specified duration, and the UE must camp on the source cell for no less than 1 second.

[0047] During cell reselection on the same frequency and priority frequency points, when multiple candidate cells meet the requirements, the LTE system selects the best cell as the target cell for reselection using the RSRP ranking method. Considering that terminal devices in the NR system access cells via beams, in order to increase the probability of successful access through a good beam, the determination of the target cell needs to consider both cell signal quality and the number of good beams.

[0048] Currently, each carrier is modeled as a cell, and the signal quality at each frequency point represents the signal quality of the cell. However, in future communication systems (such as 6G systems), the modeling method for cells and carriers may change, meaning a cell may contain multiple carriers. In this case, how to perform cell selection or reselection based on signal quality is a problem that needs to be solved.

[0049] To address the above issues, the embodiments of this application will be described in detail below with reference to Figure 2.

[0050] Referring to Figure 2, in step S210, the terminal device performs cell selection or reselection based on the signal quality of carriers associated with one or more cells. Correspondingly, referring to Figure 3, the network device can send configuration information to the terminal device (step S310), which configures the terminal device to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells. The one or more cells mentioned here include a first cell. This first cell is a cell associated with multiple carriers. Alternatively, the first cell includes multiple carriers. It should be understood that the carriers mentioned in the various embodiments of this application can also be understood as or replaced by one of the following: frequency, frequency point, frequency layer, frequency resource, frequency location.

[0051] This application does not specifically limit the implementation of step S210 in its embodiments. In some embodiments, the terminal device may determine a target carrier based on the signal quality of carriers associated with one or more cells, and use the cell to which the target carrier belongs as the target cell for cell selection or reselection. In other implementations, the terminal device may determine the signal quality of one or more cells based on the signal quality of carriers associated with one or more cells, and then perform cell selection or reselection based on the signal quality of the one or more cells. Alternatively, in some embodiments, step S210 may be replaced by: the terminal device performing cell selection or reselection based on the signal quality of the one or more cells. The signal quality of the one or more cells may be determined based on the signal quality of carriers associated with the one or more cells, or it may be determined based on other methods. Several possible implementations are given below with reference to specific embodiments.

[0052] Example 1: The terminal device selects a target carrier based on the signal quality of one or more carriers associated with the cells.

[0053] In some embodiments, the network device sends configuration information to the terminal device. This configuration information can be used to configure the terminal device to determine a target carrier based on the signal quality of carriers associated with one or more cells.

[0054] In some embodiments, in addition to being based on the signal quality of carriers associated with one or more cells, the target carrier may be determined based on one or more of the following: the priority of the carriers associated with the one or more cells, a threshold for the signal quality of the carriers associated with the one or more cells, and information indicating whether the carriers associated with the one or more cells are allowed, disallowed, or permitted to be used (this information may be, for example, an allowlist or blacklist of carriers). This information may be configured by the configuration information mentioned above.

[0055] In one implementation, the target carrier mentioned above can be a first carrier. This first carrier refers to a carrier with signal quality greater than or equal to a first threshold. Alternatively, the first carrier can be a carrier conforming to the S criterion. For example, during the initial cell selection process, if the terminal device detects a carrier with signal quality greater than or equal to the first threshold or a carrier conforming to the S criterion, the terminal device will select the cell to which that carrier belongs.

[0056] In one implementation, the target carrier mentioned above can be a second carrier. This second carrier has a higher priority than the current carrier or the current cell of the terminal device, and the signal quality (e.g., RSRP) of the first carrier is greater than or equal to a second threshold. For example, during cell reselection, if the terminal device detects a carrier with a higher priority than the current carrier or the current cell and a signal quality greater than the second threshold, the terminal device will reselect to the cell to which that carrier belongs.

[0057] In one implementation, the target carrier mentioned above can be a third carrier, whose priority is lower than or equal to the priority of the current carrier or the current cell of the terminal device, and whose signal quality (e.g., RSRP) is less than or equal to a third threshold, and / or, whose signal quality (e.g., RSRP) is greater than or equal to a fourth threshold. For example, during cell reselection, if the terminal device detects that the signal quality of the current carrier or the current cell is less than or equal to the third threshold, and the terminal device detects a carrier with a higher priority than the current carrier or the current cell and a signal quality greater than or equal to the fourth threshold, then the terminal device reselects to the cell to which that carrier belongs.

[0058] In one implementation, the target carrier mentioned above can be a fourth carrier, the difference between the signal quality (e.g., RSRP) of the fourth carrier and the signal quality (e.g., RSRP) of the current carrier or the current cell of the terminal device being greater than or equal to a fifth threshold. For example, during cell reselection, if the terminal device detects that the difference between the signal quality of a certain carrier and the signal quality of the current carrier or the current cell is greater than or equal to the fifth threshold, the terminal device will reselect to the cell to which that carrier belongs.

[0059] Example 2: The terminal device selects the target cell based on the signal quality of one or more cells.

[0060] In some embodiments, the network device sends configuration information to the terminal device, which is used to configure the terminal device to determine the target cell for cell selection or reselection based on the signal quality of one or more cells.

[0061] In some embodiments, the signal quality of the one or more cells can be determined based on the signal quality of the carriers associated with the one or more cells. That is, when selecting a cell, the terminal device can consider the signal quality of one or more carriers associated with the cell.

[0062] In addition to the signal quality of one or more cells, in some embodiments, the target cell may also be determined based on one or more of the following: the priority of the carriers associated with one or more cells; the priority of one or more cells; and a threshold for the signal quality associated with one or more cells. This information may be carried in configuration information sent by the network device.

[0063] When a cell contains multiple carriers, the method for determining the signal quality of the cell in this application embodiment is not specifically limited. For ease of understanding, the following uses the first cell (a cell associated with multiple carriers) as an example to give several possible implementation methods.

[0064] In some embodiments, the signal quality of the first cell is determined based on the signal quality (such as RSRP) of the fifth carrier among multiple carriers associated with the first cell, and the fifth carrier includes the carrier with the highest (or strongest) signal quality among the multiple carriers associated with the first cell. When the terminal device selects or reselects a cell, it uses the carrier with the highest signal quality as the basis for judgment, which can ensure that the terminal device accesses the carrier with the best signal quality (carrier coverage center) and improve the quality of service.

[0065] In some embodiments, the signal quality of the first cell is determined based on the signal quality (such as RSRP) of the fifth carrier among multiple carriers associated with the first cell, and the fifth carrier includes the carrier with the lowest (or worst) signal quality among the multiple carriers associated with the first cell. When selecting or reselecting a cell, the terminal device uses the carrier with the lowest signal quality as the criterion, which can ensure that even the worst carrier in the selected cell can meet its coverage requirements, thereby ensuring that there are no coverage holes in the cell.

[0066] In some embodiments, the signal quality of the first cell is determined based on the signal quality (e.g., RSRP) of a fifth carrier among a plurality of carriers associated with the first cell, and the fifth carrier includes a specific carrier among the plurality of carriers associated with the first cell. This specific carrier may, for example, be an anchor carrier of the first cell. Alternatively, the specific carrier may be the highest-frequency carrier or the lowest-frequency carrier among the plurality of carriers associated with the first cell. This specific carrier (e.g., an anchor carrier) may, for example, be a carrier providing the most basic coverage service to the terminal equipment; therefore, the signal quality of this specific carrier can well reflect the coverage performance of the first cell, thereby improving the reliability of cell selection or reselection.

[0067] In some embodiments, the signal quality of the first cell is determined based on the signal quality (e.g., RSRP) of the fifth carrier among multiple carriers associated with the first cell, and this fifth carrier includes all carriers among the multiple carriers associated with the first cell. For example, the signal quality of the first cell is determined based on the maximum, minimum, or average value of all carriers among the multiple carriers associated with the first cell. Taking the signal quality of the first cell as the average value of all carriers among the multiple carriers associated with the first cell as an example, this average value reflects the overall service capability of the network, balancing the characteristics of different frequency bands. In multi-carrier scenarios, cell selection or reselection based on this average value can, to some extent, avoid network oscillations and improve the stability of cell selection or reselection.

[0068] In some embodiments, the signal quality of the first cell is determined based on the signal quality (e.g., RSRP) of a fifth carrier among a plurality of carriers associated with the first cell, and the fifth carrier includes a subset of the carriers among the plurality of carriers associated with the first cell. For example, the signal quality of the first cell is determined based on the maximum, minimum, or average value of a subset of the carriers among the plurality of carriers associated with the first cell. This subset of carriers may be, for example, carriers among the carriers associated with the first cell that transmit downlink signals (such as downlink reference signals, such as SSB, MIB, or SSB), or it may be some carriers among the carriers associated with the first cell that have lower or higher frequencies.

[0069] In some embodiments, the signal quality of the first cell is determined based on the signal quality (e.g., RSRP) of the fifth carrier among multiple carriers associated with the first cell, and the fifth carrier includes N carriers (where N can be a positive integer) determined based on signal quality among the multiple carriers associated with the first cell. Alternatively, the fifth carrier includes N carriers among the multiple carriers associated with the first cell whose signal quality meets the criteria. These N carriers can be, for example, the N carriers with the highest signal quality among the multiple carriers associated with the first cell. Alternatively, the N carriers can also be carriers among the multiple carriers associated with the first cell whose signal quality is greater than or equal to a sixth threshold (the sixth threshold can be a network device configuration information). Terminal devices may not use all carriers in a cell, but mainly use carriers with good signal quality within a cell. Therefore, considering only a few carriers with good signal quality within a cell is beneficial for accurately evaluating the cell's coverage performance and improving the reliability of cell selection or reselection. It should be understood that the signal quality of the first cell can be determined based on the maximum, minimum, or average value of the aforementioned N carriers, and this application embodiment does not specifically limit this. Alternatively, in some embodiments, the number of carriers with signal quality greater than or equal to the sixth threshold in one or more cells can be evaluated, and then the cell with the largest number of such carriers can be selected or reselected as the target cell. This can ensure that the terminal device has more high-quality serving carriers in the target cell.

[0070] In addition to the implementations described in Embodiments 1 and 2, in some embodiments, when the terminal device is in a disconnected state (e.g., inactive or idle state) or not camped in the first cell (e.g., the first cell is a neighboring cell of the UE), the terminal device can only detect or receive downlink signals transmitted by one carrier in the first cell (such as downlink reference signals, like SSB, MIB, or SSB). In other words, only one carrier's downlink signal in the first cell is visible to the terminal device (other carriers may not be transmitting downlink signals, or the downlink signals transmitted by other carriers cannot be detected by the terminal device). In this case, selecting the first cell or selecting a carrier within the first cell is similar for the terminal device.

[0071] The first cell mentioned above can be a neighboring cell of the terminal device. Alternatively, the first cell can be a cell where the terminal device is not camped. Or, the first cell can be the serving cell of the terminal device. The carrier for transmitting downlink signals in the first cell can be, for example, the anchor carrier of the first cell. Alternatively, it can be understood that multiple carriers associated with the first cell share the same downlink signal. The measurement result of the terminal device on this downlink signal represents the measurement result of the first cell.

[0072] In some embodiments, assuming the first cell is a cell where the terminal device is not camped (e.g., a neighboring cell of the terminal device), and the terminal device is currently camped in a second cell, and the second cell is associated with multiple carriers, the terminal device can detect and / or receive downlink signals (such as downlink reference signals, like SSB, MIB, or SSB) transmitted on one of the carriers (e.g., an anchor carrier) in the second cell. If both the cell where the terminal device is currently camped and its neighboring cells have only one carrier visible to the terminal device, the terminal device can perform cell selection or reselection according to relevant technologies (e.g., cell selection or reselection based on the R criterion provided by relevant technologies).

[0073] Alternatively, the terminal device may be able to detect or receive downlink signals transmitted on multiple carriers associated with the second cell, and the signal quality of the second cell may be determined based on the signal quality of the sixth carrier among the multiple carriers associated with the second cell. The sixth carrier may include, for example, one or more of the following: the carrier with the highest signal quality among the multiple carriers associated with the second cell; the carrier with the lowest signal quality among the multiple carriers associated with the second cell; a specific carrier among the multiple carriers associated with the second cell; a subset of carriers among the multiple carriers associated with the second cell (e.g., the signal quality of the second cell is determined based on the maximum, minimum, or average value of the subset of carriers among the multiple carriers associated with the second cell); all carriers among the multiple carriers associated with the second cell (e.g., the signal quality of the second cell is determined based on the maximum, minimum, or average value of all carriers among the multiple carriers associated with the second cell); M carriers among the multiple carriers associated with the second cell, determined based on signal quality (the value of M may be indicated based on the configuration information of the network device), where M is a positive integer (the M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell, or the M carriers are carriers among the multiple carriers associated with the second cell whose signal quality is greater than or equal to a seventh threshold (the seventh threshold may be indicated based on the configuration information of the network device), and the signal quality of the second cell may be determined, for example, based on the maximum, minimum, or average value of the signal quality of the M carriers). The method of determining the signal quality of the second cell based on the sixth carrier is similar to the method of determining the signal quality of the first cell based on the fifth carrier in the previous embodiment 2. For details, please refer to the previous text, which will not be repeated here.

[0074] If the terminal device can detect downlink signals from multiple carriers associated with the second cell, but only detects downlink signals from one carrier associated with the first cell, then to improve the accuracy of cell selection or reselection, an enhanced cell selection or reselection criterion (such as an enhanced R criterion) can be introduced. For example, cell selection or reselection is determined based on a first weight parameter and a second weight parameter. The first weight parameter corresponds to the signal quality of the first cell, and the second weight parameter corresponds to the signal quality of the second cell; the first and second weight parameters are different. Introducing different weight parameters can solve the problem of inaccurate evaluation results that may be caused by different methods of determining the signal quality of the two cells. Of course, in other embodiments, the network device can also configure a more reasonable threshold (for cell selection or reselection) to solve the problem of inaccurate evaluation results that may be caused by different methods of determining the signal quality of the two cells.

[0075] It should also be understood that the signal quality of the carrier and / or cell mentioned in the preceding embodiments can also be referred to as channel quality. This signal quality can be determined by measuring the RSRP and / or RSRP of the carrier and / or cell.

[0076] It should also be understood that the average values ​​(such as the average value for priority) mentioned in the preceding embodiments can refer to an arithmetic average or a statistical average (or weighted average). For example, the average signal strength of two carriers can be the arithmetic average of the signal strength of the two carriers or the statistical average (or weighted average) of the signal strength of the two carriers. For example, the network device can configure corresponding coefficients for each carrier, and the priority of the first cell can be obtained by multiplying the signal strength of each carrier by the coefficient and then adding the results. The carrier coefficients can be configured by the network device according to the carrier load, or the carrier coefficients can be determined by the implementation of the network device or the terminal device. The carrier coefficients reflect the importance of the carrier, and the carrier coefficients can better balance the characteristics or requirements of different frequency bands.

[0077] The method embodiments of this application have been described in detail above with reference to Figures 1 to 3. The apparatus embodiments of this application will be described in detail below with reference to Figures 4 to 6. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0078] Figure 4 is a schematic diagram of the structure of a communication device provided in one embodiment of this application. The communication device 400 shown in Figure 4 can be the terminal device mentioned above. The communication device 400 may include a processing unit 410. The processing unit 410 is used to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein the one or more cells include a first cell, and the first cell is associated with multiple carriers.

[0079] In some embodiments, the signal quality of the carriers associated with the one or more cells is used to determine the target carrier, and the cell selection or reselection of the corresponding target cell is the cell to which the target carrier belongs.

[0080] In some embodiments, the target carrier is further determined based on one or more of the following: the priority of the carriers associated with the one or more cells; and a threshold for the signal quality of the carriers associated with the one or more cells.

[0081] In some embodiments, the target carrier is determined based on one or more of the following: a first carrier, the signal quality of which is greater than or equal to a first threshold; a second carrier, the priority of which is higher than the priority of the current carrier or current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to a second threshold; a third carrier, the priority of which is lower than or equal to the priority of the current carrier or current cell of the terminal device, and the signal quality of the current carrier or current cell is less than or equal to a third threshold, and / or, the signal quality of the third carrier is greater than or equal to a fourth threshold; and a fourth carrier, the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or current cell of the terminal device is greater than or equal to a fifth threshold.

[0082] In some embodiments, the target cell for cell selection or reselection is determined based on the signal quality of the one or more cells, and the signal quality of the one or more cells is determined based on the signal quality of the carrier associated with the one or more cells.

[0083] In some embodiments, the target cell is determined based on one or more of the following: the priority of the carrier associated with the one or more cells; the priority of the one or more cells; and a threshold for the signal quality associated with the one or more cells.

[0084] In some embodiments, the signal quality of the first cell is determined based on the signal quality of a fifth carrier among a plurality of carriers associated with the first cell; wherein the fifth carrier includes one or more of the following: the carrier with the highest signal quality among the plurality of carriers associated with the first cell; the carrier with the lowest signal quality among the plurality of carriers associated with the first cell; a specific carrier among the plurality of carriers associated with the first cell; a subset of carriers among the plurality of carriers associated with the first cell; all carriers among the plurality of carriers associated with the first cell; and N carriers among the plurality of carriers associated with the first cell determined based on signal quality, where N is a positive integer.

[0085] In some embodiments, the N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, the N carriers are the carriers with signal quality greater than or equal to a sixth threshold among the multiple carriers associated with the first cell.

[0086] In some embodiments, the signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

[0087] In some embodiments, among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

[0088] In some embodiments, the signal quality of the first cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the first cell.

[0089] In some embodiments, when the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

[0090] In some embodiments, the first cell is the cell where the terminal device is currently camped; or, the first cell is not the cell where the terminal device is currently camped.

[0091] In some embodiments, the terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is capable of detecting or receiving downlink signals transmitted on the multiple carriers associated with the second cell. The signal quality of the second cell is determined based on the signal quality of a sixth carrier among the multiple carriers associated with the second cell. The sixth carrier includes one or more of the following: the carrier with the highest signal quality among the multiple carriers associated with the second cell; the carrier with the lowest signal quality among the multiple carriers associated with the second cell; a specific carrier among the multiple carriers associated with the second cell; a portion of the multiple carriers associated with the second cell; all the multiple carriers associated with the second cell; or M carriers among the multiple carriers associated with the second cell, determined based on signal quality, where M is a positive integer.

[0092] In some embodiments, the M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, the M carriers are carriers with signal quality greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

[0093] In some embodiments, the signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

[0094] In some embodiments, the signal quality of the second cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the second cell.

[0095] In some embodiments, the cell selection or reselection is determined based on a first weight parameter and a second weight parameter, wherein the first weight parameter corresponds to the signal quality of the first cell, the second weight parameter corresponds to the signal quality of the second cell, and the first weight parameter and the second weight parameter are different.

[0096] Figure 5 is a schematic diagram of the structure of a communication device provided in another embodiment of this application. The communication device 500 shown in Figure 5 can be the network device mentioned above. The communication device 500 may include a communication unit 510. The communication unit 510 is used to send configuration information to a terminal device, the configuration information being used to configure the terminal device to perform cell selection or reselection based on the signal quality of carriers associated with one or more cells; wherein, the one or more cells include a first cell, and the first cell is associated with multiple carriers.

[0097] In some embodiments, the configuration information is used to configure the terminal device to determine a target carrier based on the signal quality of the carriers associated with the one or more cells, and the target cell selected or reselected is the cell to which the target carrier belongs.

[0098] In some embodiments, the configuration information includes one or more of the following: the priority of the carriers associated with the one or more cells; and the signal quality threshold of the carriers associated with the one or more cells.

[0099] In some embodiments, the target carrier is determined based on one or more of the following: a first carrier, the signal quality of which is greater than or equal to a first threshold; a second carrier, the priority of which is higher than the priority of the current carrier or current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to a second threshold; a third carrier, the priority of which is lower than or equal to the priority of the current carrier or current cell of the terminal device, and the signal quality of the current carrier or current cell is less than or equal to a third threshold, and / or, the signal quality of the third carrier is greater than or equal to a fourth threshold; and a fourth carrier, the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or current cell of the terminal device is greater than or equal to a fifth threshold.

[0100] In some embodiments, the configuration information is used to configure the terminal device to determine the target cell for cell selection or reselection based on the signal quality of the one or more cells.

[0101] In some embodiments, the configuration information includes one or more of the following: the priority of the carrier associated with the one or more cells; the priority of the one or more cells; and the signal quality threshold associated with the one or more cells.

[0102] In some embodiments, the configuration information is used to indicate that the signal quality of the first cell is determined based on N carriers among a plurality of carriers associated with the first cell, where N is a positive integer.

[0103] In some embodiments, the N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, the N carriers are the carriers with signal quality greater than or equal to a sixth threshold among the multiple carriers associated with the first cell.

[0104] In some embodiments, the signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

[0105] In some embodiments, among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

[0106] In some embodiments, when the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

[0107] In some embodiments, the first cell is the cell where the terminal device is currently camped; or, the first cell is not the cell where the terminal device is currently camped.

[0108] In some embodiments, the terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is able to detect or receive downlink signals transmitted on the multiple carriers associated with the second cell. The configuration information is used to indicate that the signal quality of the second cell is determined based on M carriers among the multiple carriers associated with the second cell, where M is a positive integer.

[0109] In some embodiments, the M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, the M carriers are carriers with signal quality greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

[0110] In some embodiments, the signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

[0111] In some embodiments, the configuration information includes a first weight parameter and a second weight parameter for cell selection or reselection, wherein the first weight parameter corresponds to the signal quality of the first cell, the second weight parameter corresponds to the signal quality of the second cell, and the first weight parameter and the second weight parameter are different.

[0112] Figure 6 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 6 indicate that the unit or module is optional. This device 600 can be used to implement the methods described in the above method embodiments. Device 600 can be a chip, a terminal device, or a network device.

[0113] Apparatus 600 may include one or more processors 610. The processor 610 may support apparatus 600 in implementing the methods described in the preceding method embodiments. The processor 610 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0114] The apparatus 600 may further include one or more memories 620. The memories 620 store a program that can be executed by the processor 610, causing the processor 610 to perform the methods described in the preceding method embodiments. The memories 620 may be independent of the processor 610 or integrated within the processor 610.

[0115] The device 600 may also include a transceiver 630. The processor 610 can communicate with other devices or chips via the transceiver 630. For example, the processor 610 can send and receive data with other devices or chips via the transceiver 630.

[0116] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0117] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0118] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0119] It should be understood that the terminology used in this application is only for explaining specific embodiments of this application and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0120] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0121] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0122] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0123] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0124] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0125] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0126] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0128] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0129] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0130] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0131] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The terminal device performs cell selection or reselection based on the signal quality of the carriers associated with one or more cells; The one or more cells include a first cell, which is associated with multiple carriers.

2. The method according to claim 1, characterized in that, The signal quality of the carriers associated with the one or more cells is used to determine the target carrier, and the cell selection or reselection of the corresponding target cell is the cell to which the target carrier belongs.

3. The method according to claim 2, characterized in that, The target carrier is also determined based on one or more of the following: The priority of the carriers associated with the one or more cells; The threshold for the signal quality of the carrier associated with the one or more cells.

4. The method according to claim 3, characterized in that, The target carrier is determined based on one or more of the following: The first carrier, wherein the signal quality of the first carrier is greater than or equal to a first threshold; The second carrier has a higher priority than the current carrier or the current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to the second threshold. The third carrier has a priority lower than or equal to the priority of the current carrier or the current cell of the terminal device, and the signal quality of the current carrier or the current cell is less than or equal to a third threshold, and / or the signal quality of the third carrier is greater than or equal to a fourth threshold; The fourth carrier, wherein the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or the current cell of the terminal device is greater than or equal to a fifth threshold.

5. The method according to claim 1, characterized in that, The target cell for cell selection or reselection is determined based on the signal quality of the one or more cells, and the signal quality of the one or more cells is determined based on the signal quality of the carrier associated with the one or more cells.

6. The method according to claim 5, characterized in that, The target cell is determined based on one or more of the following: The priority of the carriers associated with the one or more cells; The priority of the one or more cells; The threshold for signal quality associated with the one or more cells.

7. The method according to claim 5 or 6, characterized in that, The signal quality of the first cell is determined based on the signal quality of the fifth carrier among the multiple carriers associated with the first cell; The fifth carrier includes one or more of the following: The carrier with the highest signal quality among the multiple carriers associated with the first cell; The carrier with the lowest signal quality among the multiple carriers associated with the first cell; A specific carrier among the multiple carriers associated with the first cell; A portion of the multiple carriers associated with the first cell; All carriers among the multiple carriers associated with the first cell; The first cell is associated with N carriers, which are determined based on signal quality, where N is a positive integer.

8. The method according to claim 7, characterized in that: The N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, The N carriers are carriers whose signal quality is greater than or equal to the sixth threshold among the multiple carriers associated with the first cell.

9. The method according to claim 8, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

10. The method according to claim 8, characterized in that, Among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

11. The method according to claim 7, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the first cell.

12. The method according to claim 1, characterized in that, When the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

13. The method according to claim 12, characterized in that: The first cell is the cell where the terminal device is currently camped; or, The first cell is not the cell where the terminal device is currently residing.

14. The method according to claim 12, characterized in that, The terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is capable of detecting or receiving downlink signals transmitted on the multiple carriers associated with the second cell. The signal quality of the second cell is determined based on the signal quality of the sixth carrier among the multiple carriers associated with the second cell. The sixth carrier includes one or more of the following: The carrier with the highest signal quality among the multiple carriers associated with the second cell; The carrier with the lowest signal quality among the multiple carriers associated with the second cell; A specific carrier among the multiple carriers associated with the second cell; A portion of the multiple carriers associated with the second cell; All carriers among the multiple carriers associated with the second cell; The second cell is associated with M carriers, which are determined based on signal quality, where M is a positive integer.

15. The method according to claim 14, characterized in that: The M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, The M carriers are carriers whose signal quality is greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

16. The method according to claim 15, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

17. The method according to claim 14, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the second cell.

18. The method according to any one of claims 14 to 17, characterized in that, The cell selection or reselection is determined based on a first weight parameter and a second weight parameter. The first weight parameter corresponds to the signal quality of the first cell, and the second weight parameter corresponds to the signal quality of the second cell. The first weight parameter and the second weight parameter are different.

19. A communication method, characterized in that, include: The network device sends configuration information to the terminal device, the configuration information being used to configure the terminal device to perform cell selection or reselection based on the signal quality of one or more carriers associated with cells; The one or more cells include a first cell, which is associated with multiple carriers.

20. The method according to claim 19, characterized in that, The configuration information is used to configure the terminal device to determine the target carrier based on the signal quality of the carriers associated with the one or more cells, and the cell selection or reselection of the corresponding target cell is the cell to which the target carrier belongs.

21. The method according to claim 20, characterized in that, The configuration information includes one or more of the following: The priority of the carriers associated with the one or more cells; The threshold for the signal quality of the carrier associated with the one or more cells.

22. The method according to claim 20 or 21, characterized in that, The target carrier is determined based on one or more of the following: The first carrier, wherein the signal quality of the first carrier is greater than or equal to a first threshold; The second carrier has a higher priority than the current carrier or the current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to the second threshold. The third carrier has a priority lower than or equal to the priority of the current carrier or the current cell of the terminal device, and the signal quality of the current carrier or the current cell is less than or equal to a third threshold, and / or the signal quality of the third carrier is greater than or equal to a fourth threshold; The fourth carrier, wherein the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or the current cell of the terminal device is greater than or equal to a fifth threshold.

23. The method according to claim 19, characterized in that, The configuration information is used to configure the terminal device to determine the target cell for cell selection or reselection based on the signal quality of the one or more cells.

24. The method according to claim 23, characterized in that, The configuration information includes one or more of the following: The priority of the carriers associated with the one or more cells; The priority of the one or more cells; The threshold for signal quality associated with the one or more cells.

25. The method according to claim 23 or 24, characterized in that, The configuration information is used to indicate that the signal quality of the first cell is determined based on N carriers among multiple carriers associated with the first cell, where N is a positive integer.

26. The method according to claim 25, characterized in that: The N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, The N carriers are carriers whose signal quality is greater than or equal to the sixth threshold among the multiple carriers associated with the first cell.

27. The method according to claim 26, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

28. The method according to claim 26, characterized in that, Among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

29. The method according to claim 19, characterized in that, When the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

30. The method according to claim 29, characterized in that: The first cell is the cell where the terminal device is currently camped; or, The first cell is not the cell where the terminal device is currently residing.

31. The method according to claim 29, characterized in that, The terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is able to detect or receive downlink signals transmitted by the multiple carriers associated with the second cell. The configuration information is used to indicate that the signal quality of the second cell is determined based on M carriers among the multiple carriers associated with the second cell, where M is a positive integer.

32. The method according to claim 31, characterized in that: The M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, The M carriers are carriers whose signal quality is greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

33. The method according to claim 32, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

34. The method according to any one of claims 31 to 33, characterized in that, The configuration information includes a first weight parameter and a second weight parameter for cell selection or reselection. The first weight parameter corresponds to the signal quality of the first cell, and the second weight parameter corresponds to the signal quality of the second cell. The first weight parameter and the second weight parameter are different.

35. A communication device, characterized in that, The communication device is a terminal device, and the communication device includes: The processing unit is used to perform cell selection or reselection based on the signal quality of the carriers associated with one or more cells; The one or more cells include a first cell, which is associated with multiple carriers.

36. The communication device according to claim 35, characterized in that, The signal quality of the carriers associated with the one or more cells is used to determine the target carrier, and the cell selection or reselection of the corresponding target cell is the cell to which the target carrier belongs.

37. The communication device according to claim 36, characterized in that, The target carrier is also determined based on one or more of the following: The priority of the carriers associated with the one or more cells; The threshold for the signal quality of the carrier associated with the one or more cells.

38. The communication device according to claim 37, characterized in that, The target carrier is determined based on one or more of the following: The first carrier, wherein the signal quality of the first carrier is greater than or equal to a first threshold; The second carrier has a higher priority than the current carrier or the current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to the second threshold. The third carrier has a priority lower than or equal to the priority of the current carrier or the current cell of the terminal device, and the signal quality of the current carrier or the current cell is less than or equal to a third threshold, and / or the signal quality of the third carrier is greater than or equal to a fourth threshold; The fourth carrier, wherein the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or the current cell of the terminal device is greater than or equal to a fifth threshold.

39. The communication device according to claim 35, characterized in that, The target cell for cell selection or reselection is determined based on the signal quality of the one or more cells, and the signal quality of the one or more cells is determined based on the signal quality of the carrier associated with the one or more cells.

40. The communication device according to claim 39, characterized in that, The target cell is determined based on one or more of the following: The priority of the carriers associated with the one or more cells; The priority of the one or more cells; The threshold for signal quality associated with the one or more cells.

41. The communication device according to claim 39 or 40, characterized in that, The signal quality of the first cell is determined based on the signal quality of the fifth carrier among the multiple carriers associated with the first cell; The fifth carrier includes one or more of the following: The carrier with the highest signal quality among the multiple carriers associated with the first cell; The carrier with the lowest signal quality among the multiple carriers associated with the first cell; A specific carrier among the multiple carriers associated with the first cell; A portion of the multiple carriers associated with the first cell; All carriers among the multiple carriers associated with the first cell; The first cell is associated with N carriers, which are determined based on signal quality, where N is a positive integer.

42. The communication device according to claim 41, characterized in that: The N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, The N carriers are carriers whose signal quality is greater than or equal to the sixth threshold among the multiple carriers associated with the first cell.

43. The communication device according to claim 42, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

44. The communication device according to claim 42, characterized in that, Among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

45. The communication device according to claim 41, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the first cell.

46. ​​The communication device according to claim 35, characterized in that, When the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

47. The communication device according to claim 46, characterized in that: The first cell is the cell where the terminal device is currently camped; or, The first cell is not the cell where the terminal device is currently residing.

48. The communication device according to claim 46, characterized in that, The terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is capable of detecting or receiving downlink signals transmitted on the multiple carriers associated with the second cell. The signal quality of the second cell is determined based on the signal quality of the sixth carrier among the multiple carriers associated with the second cell. The sixth carrier includes one or more of the following: The carrier with the highest signal quality among the multiple carriers associated with the second cell; The carrier with the lowest signal quality among the multiple carriers associated with the second cell; A specific carrier among the multiple carriers associated with the second cell; A portion of the multiple carriers associated with the second cell; All carriers among the multiple carriers associated with the second cell; The second cell is associated with M carriers, which are determined based on signal quality, where M is a positive integer.

49. The communication device according to claim 48, characterized in that: The M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, The M carriers are carriers whose signal quality is greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

50. The communication device according to claim 49, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

51. The communication device according to claim 50, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average value of some or all of the multiple carriers associated with the second cell.

52. The communication device according to any one of claims 48 to 51, characterized in that, The cell selection or reselection is determined based on a first weight parameter and a second weight parameter. The first weight parameter corresponds to the signal quality of the first cell, and the second weight parameter corresponds to the signal quality of the second cell. The first weight parameter and the second weight parameter are different.

53. A communication device, characterized in that, The communication device is a network device, and the communication device includes: A communication unit is used to send configuration information to a terminal device, the configuration information being used to configure the terminal device to perform cell selection or reselection based on the signal quality of one or more carriers associated with cells; The one or more cells include a first cell, which is associated with multiple carriers.

54. The communication device according to claim 53, characterized in that, The configuration information is used to configure the terminal device to determine the target carrier based on the signal quality of the carriers associated with the one or more cells, and the cell selection or reselection of the corresponding target cell is the cell to which the target carrier belongs.

55. The communication device according to claim 54, characterized in that, The configuration information includes one or more of the following: The priority of the carriers associated with the one or more cells; The threshold for the signal quality of the carrier associated with the one or more cells.

56. The communication device according to claim 54 or 55, characterized in that, The target carrier is determined based on one or more of the following: The first carrier, wherein the signal quality of the first carrier is greater than or equal to a first threshold; The second carrier has a higher priority than the current carrier or the current cell of the terminal device, and the signal quality of the first carrier is greater than or equal to the second threshold. The third carrier has a priority lower than or equal to the priority of the current carrier or the current cell of the terminal device, and the signal quality of the current carrier or the current cell is less than or equal to a third threshold, and / or the signal quality of the third carrier is greater than or equal to a fourth threshold; The fourth carrier, wherein the difference between the signal quality of the fourth carrier and the signal quality of the current carrier or the current cell of the terminal device is greater than or equal to a fifth threshold.

57. The communication device according to claim 53, characterized in that, The configuration information is used to configure the terminal device to determine the target cell for cell selection or reselection based on the signal quality of the one or more cells.

58. The communication device according to claim 57, characterized in that, The configuration information includes one or more of the following: The priority of the carriers associated with the one or more cells; The priority of the one or more cells; The threshold for signal quality associated with the one or more cells.

59. The communication device according to claim 57 or 58, characterized in that, The configuration information is used to indicate that the signal quality of the first cell is determined based on N carriers among multiple carriers associated with the first cell, where N is a positive integer.

60. The communication device according to claim 59, characterized in that: The N carriers are the N carriers with the highest signal quality among the multiple carriers associated with the first cell; or, The N carriers are carriers whose signal quality is greater than or equal to the sixth threshold among the multiple carriers associated with the first cell.

61. The communication device according to claim 60, characterized in that, The signal quality of the first cell is determined based on the maximum, minimum, or average signal quality of the N carriers.

62. The communication device according to claim 60, characterized in that, Among the one or more cells, the target cell corresponding to the cell selection or reselection contains the most carriers with signal quality greater than or equal to the sixth threshold.

63. The communication device according to claim 53, characterized in that, When the terminal device is in a disconnected state, the terminal device can only detect or receive downlink signals transmitted on one carrier in the first cell.

64. The communication device according to claim 63, characterized in that: The first cell is the cell where the terminal device is currently camped; or, The first cell is not the cell where the terminal device is currently residing.

65. The communication device according to claim 63, characterized in that, The terminal device is currently camped on a second cell, which is associated with multiple carriers. The terminal device is able to detect or receive downlink signals transmitted by the multiple carriers associated with the second cell. The configuration information is used to indicate that the signal quality of the second cell is determined based on M carriers among the multiple carriers associated with the second cell, where M is a positive integer.

66. The communication device according to claim 65, characterized in that: The M carriers are the M carriers with the highest signal quality among the multiple carriers associated with the second cell; or, The M carriers are carriers whose signal quality is greater than or equal to the seventh threshold among the multiple carriers associated with the second cell.

67. The communication device according to claim 66, characterized in that, The signal quality of the second cell is determined based on the maximum, minimum, or average signal quality of the M carriers.

68. The communication device according to any one of claims 65 to 67, characterized in that, The configuration information includes a first weight parameter and a second weight parameter for cell selection or reselection. The first weight parameter corresponds to the signal quality of the first cell, and the second weight parameter corresponds to the signal quality of the second cell. The first weight parameter and the second weight parameter are different.

69. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1 to 18 or 19 to 34.

70. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1 to 18 or 19 to 34.

71. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 18 or 19 to 34.

72. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1 to 18 or 19 to 34.

73. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1 to 18 or 19 to 34.

74. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 18 or 19 to 34.

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