Communication method, device and system

Abstract

The invention relates to a communication method, device and system. In the method, UE may receive an indication message from a network device, the indication message being used for indicating that system information included in a first set is changed, or the indication message being used for indicating that system information included in a second set is changed; wherein the system information included in the first set is borne by the first cell, and the system information included in the second set is borne by the second cell; the UE may then detect system information included in the first set in the first cell, or detect system information included in the second set in the second cell, according to the indication message. Thus, the UE can determine on which cell the updated system information belonging to the first cell is loaded according to the indication of the network device, so that the UE does not need to detect on each cell, and the power consumption of the UE can be reduced. Moreover, the network equipment in the scene can reduce the transmission of public signals, so that the energy conservation of the network equipment can be realized.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, and system. Background Art

[0002] With the gradual evolution of communication systems, it is of great research significance to reduce the energy consumption of network devices and terminal devices in the network. One of the main technical means for reducing the energy consumption of network devices is to reduce the transmission of unnecessary signals. For example, when a network device has no data information to send, from the perspective of energy consumption, the network device should not send any signals; however, the network device usually has to send some always-on common signals so that the terminal device can identify the network device. Among them, the common signals are, for example, synchronization signal blocks (SSBs), messages related to system information, paging messages, etc.; among them, the messages related to the system are, for example, system information block 1 (SIB1). In the current protocol, each cell needs to broadcast SIB1 periodically. In scenarios with a large number of beams or a short SIB1 transmission period, the time domain occupancy ratio required for transmitting SIB1 is quite large; in a medium to light load scenario, although the actual service data transmission is small, due to the transmission of common signals, it is impossible to effectively reduce the power consumption of network devices.

[0003] Therefore, how to reduce the energy consumption of network devices and terminal devices in the network is worthy of research. Summary of the Invention

[0004] Embodiments of this application provide a communication method, apparatus, and system for reducing the energy consumption of network devices and user equipment (UE).

[0005] In a first aspect, a first communication method is provided. This method can be executed by a UE, or by other devices including UE functions, or by a chip system (or, chip) or other functional modules that can implement the functions of the UE. The chip system or functional module is, for example, disposed in the UE. The method includes: the UE receives an indication message from a network device, where the indication message is used to indicate that the system information included in a target set has changed, and the system information included in the target set is carried on a carrier of a target cell; where the target set is a first set and the target cell is the first cell; or the target set is a second set and the target cell is the second cell; the UE detects the system information included in the target set in the target cell according to the indication message. In other words, the UE can detect the system information included in the first set in the first cell or the system information included in the second set in the second cell according to the indication information.

[0006] In this method, the UE can determine the cell on which the updated system information is carried through the indication message of the network device. In this way, in a scenario where the system information is carried by multiple different cells, the network device can not only indicate to the UE that there is a change in the system information, but also indicate to the UE the cell corresponding to the updated system information, so that the UE can be enabled to respond to the change in the system information without detecting in multiple cells, thereby reducing the power consumption of the UE. Moreover, since the system information can be carried by multiple different cells, the transmission of public signals in the network can also be reduced, thereby achieving energy saving of the network device.

[0007] In a possible implementation, the system information belonging to the first cell is carried in the first cell and the second cell. In other words, the second cell not only carries the system information belonging to its own cell, but also carries the system information belonging to the first cell; the first cell carries a part of the system information belonging to the first cell. Optionally, the SIB1 of the first cell is carried in the second cell, and the other system information of the first cell except the SIB1 is carried in the first cell.

[0008] Through this implementation, the network device can reduce the transmission of public signals in the first cell, thereby reducing the energy consumption of the network device. In addition, since the system information of the second cell itself also needs to be sent, carrying the SIB1 of the first cell in the second cell results in less additional energy consumption of the network device.

[0009] In a possible implementation, the indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging the UE.

[0010] In this embodiment, an update indication message of system information is carried by an existing downlink control message, so that it is possible to indicate the cell carrying the updated system information of the UE without adding a new downlink control message.

[0011] In a possible embodiment, the first downlink control message includes short message indication information for indicating a short message; when the short message indication information is used to indicate that there is a change in system information, the short message is used to indicate that the system information included in the target set has changed; wherein, the short message includes the indication message. In this embodiment, based on the short message indication information included in the downlink control message for paging and the short message indicated thereby, on the one hand, it is possible to indicate the existence of a change in system information through the short message indication information, and on the other hand, it is also possible to further indicate which cell the system information carried on has changed by combining the short message indicated by the short message indication information. In this way, through the existing downlink control information, it is possible to indicate the cell carrying the updated system information, thereby reducing the power consumption of the UE.

[0012] In the above embodiment, the short message indication information is used to indicate the existence of a change in system information, which can be implemented by various bit values. For example, it can be indicated that there is a change in system information by bit values of "11" and "10", and at this time, the short message indicated by the short message indication information can be used to further indicate which cell the system information carried on has changed. For another example, it can also be indicated that there is a change in system information by reserving a bit value of "00", and at this time, the short message indicated by the short message indication information can also be used to further indicate which cell the system information carried on has changed.

[0013] In a possible embodiment, the indication message is carried in the resource scheduling information of a physical downlink shared channel (PDSCH); wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0014] In this embodiment, based on the resource scheduling information of the PDSCH scheduled by the downlink control message, it is also possible to indicate the cell carrying the updated system information, thereby reducing the power consumption of the UE.

[0015] In a possible embodiment, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a new type of downlink control message.

[0016] In this embodiment, in addition to reusing the existing downlink control messages, the indication of the cell carrying the updated system information can also be achieved through the newly added downlink control messages, thereby reducing the power consumption of the UE.

[0017] In a possible embodiment, the indication message is carried on the newly added bit. Exemplarily, the indication message is carried on the newly added bit included in the downlink control message.

[0018] In this embodiment, based on the existing downlink control messages or the newly added downlink control messages, not only can the reserved bits be reused, but the indication of the cell carrying the updated system information can also be achieved by adding new bits in the downlink control message, thereby reducing the power consumption of the UE.

[0019] In a possible embodiment, the method further includes: the UE receives configuration information from the network device, and the configuration information includes at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set.

[0020] In this embodiment, the network device and the UE can pre-synchronize the configuration information, so that based on the synchronized configuration information, the indication of the cell carrying the updated system information can be achieved through the indication message, thereby reducing the power consumption of the UE.

[0021] In a possible embodiment, the first set includes M pieces of system information, the second set includes N pieces of system information other than the M pieces of system information, and M and N are positive integers. Among them, the M pieces of system information and the N pieces of system information belong to the first cell.

[0022] In this embodiment, the system information carried on different cells can be different, thereby reducing the repeated carrying of system information on different cells.

[0023] In the above embodiments, the system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell. In this embodiment, the system information belonging to the same cell can be carried through different cells, so that the transmission of public signals by the network device can be reduced, thereby achieving energy saving of the network device.

[0024] Second aspect, a second communication method is provided. This method can be executed by a UE, or by other devices including UE functions, or by a chip system (or, chip) or other functional modules that can implement the functions of the UE, and the chip system or functional module is, for example, disposed in the UE. The method includes: receiving an indication message from a network device, where the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent on a second cell; detecting the changed system information on the second cell according to the indication message.

[0025] In a possible implementation manner, the indication message is carried in a first downlink control message; wherein, the first downlink control message is used to schedule paging for the UE.

[0026] In a possible implementation manner, the indication message is carried in a first downlink control message; the first downlink control message includes short message indication information, and the short message indication information is used to indicate a short message; when the short message indication information is used to indicate that the system information of the first cell where the UE is located has changed, the short message is used to indicate that the changed system information is sent on a second cell; wherein, the short message includes the indication message.

[0027] In a possible implementation manner, the indication message is carried in resource scheduling information of a physical downlink shared channel PDSCH; wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0028] In a possible implementation manner, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcast, or a newly added type of downlink control message.

[0029] In a possible implementation manner, the indication message is carried on newly added bits included in the downlink control message.

[0030] In a possible implementation manner, the method further includes: the UE receives configuration information from the network device, and the configuration information includes at least one of the following information: identifiers of system information included in a first set, identifiers of system information included in a second set. Wherein, the system information included in the first set is carried on the first cell, and the system information included in the second set is carried on the second cell.

[0031] In a possible implementation manner, the first set includes M pieces of system information, and the second set includes N pieces of system information other than the M pieces of system information, where M and N are positive integers.

[0032] In a possible implementation, the system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

[0033] Regarding the technical effects brought by the third aspect or various alternative implementations, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation.

[0034] In a third aspect, a third communication method is provided. This method can be executed by a network device, or by other devices including network device functions, or by a chip system (or, chip) or other functional modules that can implement the functions of the network device. The chip system or functional module is, for example, disposed in the network device. The network device is, for example, an access network device, and one implementation of the access network device is a base station. The method includes: The network device sends an indication message to the UE, where the indication message is used to indicate that the system information included in the target set has changed, and the system information included in the target set is carried on the carrier of the target cell; where the target set is the first set and the target cell is the first cell; or the target set is the second set and the target cell is the second cell; The network device sends the changed system information to the UE in the target cell. In other words, the network device sends the changed system information to the UE in the first cell or the second cell.

[0035] In a possible implementation, the indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging the UE.

[0036] In a possible implementation, the first downlink control message includes short message indication information, and the short message indication information is used to indicate a short message; when the short message indication information is used to indicate that there is a change in system information, the short message is used to indicate that the system information included in the target set has changed; where the short message includes the indication message. Exemplarily, the indication message is carried at the following message positions: when the short message indication information included in the first downlink control message is a reserved bit value, any bit included in the short message corresponding to the short message indication information; or, when the short message indication information included in the first downlink control message is a first bit value or a second bit value, any reserved bit included in the short message corresponding to the short message indication information; where the first bit value or the second bit value is used to indicate that there is a change in system information.

[0037] In a possible implementation, the indication message is carried in the resource scheduling information of the PDSCH; where the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0038] In a possible implementation, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a new type of downlink control message.

[0039] In a possible implementation, the indication message is carried on a newly added bit. Exemplarily, the indication message is carried on a newly added bit included in the downlink control message.

[0040] In a possible implementation, the method further includes: sending configuration information to the UE, where the configuration information includes at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set.

[0041] In a possible implementation, the first set includes M pieces of system information, and the second set includes N pieces of system information other than the M pieces of system information, where M and N are positive integers. Among them, the M pieces of system information and the N pieces of system information belong to the first cell.

[0042] Based on the above embodiments, the first set includes M pieces of system information, and the second set includes N pieces of system information other than the M pieces of system information, where M and N are positive integers.

[0043] Regarding the technical effects brought by the third aspect or various alternative embodiments, reference may be made to the introduction of the technical effects of the first aspect or the corresponding embodiments.

[0044] Fourthly, a fourth communication method is provided. This method can be executed by a network device, or by other devices including the functions of the network device, or by a chip system (or, chip) or other functional modules. The chip system or functional module can implement the functions of the network device, and the chip system or functional module is, for example, disposed in the network device. The network device is, for example, an access network device, and an implementation manner of the access network device is, for example, a base station. The method includes: sending system information in a second cell, where the system information includes the system information for which the first cell has changed; sending an indication message to the UE in the first cell, where the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent in the second cell.

[0045] In a possible implementation, the indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging of the UE.

[0046] In a possible implementation, the first downlink control message includes short message indication information for indicating a short message; when the short message indication information is used to indicate that the system information of the first cell where the UE is located has changed, the short message is used to indicate that the changed system information is sent on the second cell; wherein, the short message includes the indication message.

[0047] In a possible implementation, the indication message is carried in the resource scheduling information of the physical downlink shared channel PDSCH; wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0048] In a possible implementation, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a new type of downlink control message.

[0049] In a possible implementation, the indication message is carried on an additional bit included in the downlink control message.

[0050] In a possible implementation, the method further includes: sending configuration information to the UE, the configuration information including at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set. Wherein, the system information included in the first set is carried on the first cell, and the system information included in the second set is carried on the second cell.

[0051] In a possible implementation, the first set includes M pieces of system information, and the second set includes N pieces of system information other than the M pieces of system information, where M and N are positive integers.

[0052] In a possible implementation, the system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

[0053] Regarding the technical effects brought by the fourth aspect or various optional implementations, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation.

[0054] Fifth aspect, a communication device is provided. The communication device may be the UE described in any one of the above first aspect or second aspect. The communication device has the functions of the above UE. The communication device is, for example, a UE, or a larger device including the UE, or a functional module in the UE, such as a baseband device or a chip system, etc. In an optional implementation manner, the communication device includes a baseband device and a radio frequency device. In another optional implementation manner, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). The transceiver unit can implement a sending function and a receiving function. When the transceiver unit implements the sending function, it can be referred to as a sending unit (sometimes also referred to as a sending module). When the transceiver unit implements the receiving function, it can be referred to as a receiving unit (sometimes also referred to as a receiving module). The sending unit and the receiving unit may be the same functional module, and this functional module is called the transceiver unit, and this functional module can implement the sending function and the receiving function; or, the sending unit and the receiving unit may be different functional modules, and the transceiver unit is a general term for these functional modules.

[0055] In an optional implementation manner, the transceiver unit (or, the receiving unit) is configured to: receive an indication message from a network device, where the indication message is used to indicate that the system information included in a target set has changed, and the system information included in the target set is carried on a carrier of a target cell; where the target set is a first set, and the target cell is the first cell; or the target set is a second set, and the target cell is a second cell; the processing unit is configured to detect, according to the indication message, the system information included in the target cell.

[0056] In another optional implementation manner, the transceiver unit (or, the receiving unit) is configured to: receive an indication message from a network device, where the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent on a second cell; the processing unit is configured to detect, according to the indication message, the changed system information on the second cell.

[0057] In a possible implementation manner, the indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging.

[0058] In a possible implementation manner, the first downlink control message includes short message indication information, and the short message indication information is used to indicate a short message; when the short message indication information is used to indicate that system information has changed, the short message is used to indicate that the system information included in the target set has changed; wherein, the short message includes the indication message. Exemplarily, the indication message is carried at the following message positions: when the short message indication information included in the first downlink control message is a reserved bit value, on any bit of the short message corresponding to the short message indication information; or, when the short message indication information included in the first downlink control message is a first bit value or a second bit value, on any reserved bit of the short message corresponding to the short message indication information; wherein, the first bit value or the second bit value is used to indicate that there is a system information change.

[0059] In a possible implementation manner, the indication message is carried in the resource scheduling information of the PDSCH; wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0060] In a possible implementation manner, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a new type of downlink control message.

[0061] In a possible implementation manner, the indication message is carried on a newly added bit.

[0062] In a possible implementation manner, the transceiver unit is further configured to receive configuration information from the network device, and the configuration information includes at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set.

[0063] In a possible implementation manner, the first set includes M pieces of system information, the second set includes N pieces of system information other than the M pieces of system information, and M and N are positive integers. Wherein, the M pieces of system information and the N pieces of system information belong to the first cell.

[0064] Based on the above embodiments, the system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

[0065] In a sixth aspect, a communication device is provided. The communication device may be the network device described in any one of the above third aspect or fourth aspect. The communication device has the functions of the above network device. The communication device is, for example, a network device, or a larger device including a network device, or a functional module in a network device, such as a baseband device or a chip system, etc. In an optional implementation manner, the communication device includes a baseband device and a radio frequency device. In another optional implementation manner, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). For the implementation manner of the transceiver unit, reference may be made to the description in the fifth aspect.

[0066] In an optional implementation manner, the transceiver unit (or the sending unit) is configured to send an indication message to the UE, where the indication message is used to indicate that the system information included in the target set has changed, and the system information included in the target set is carried on the carrier of the target cell; where the target set is a first set, and the target cell is the first cell; or the target set is a second set, and the target cell is a second cell; the transceiver unit (or the sending unit) is further configured to send the changed system information to the UE in the target cell.

[0067] In another optional implementation manner, the transceiver unit (or the sending unit) is configured to: send system information in a second cell, where the system information includes the changed system information of a first cell; the transceiver unit (or the sending unit) is further configured to: send an indication message to the UE on the first cell, where the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent in the second cell.

[0068] In a possible implementation manner, the indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging.

[0069] In a possible implementation manner, the first downlink control message includes short message indication information, and the short message indication information is used to indicate a short message; when the short message indication information is used to indicate that system information has changed, the short message is used to indicate that the system information included in the target set has changed; wherein, the short message includes the indication message. Exemplarily, the indication message is carried at the following message positions: when the short message indication information included in the first downlink control message is a reserved bit value, on any bit of the short message corresponding to the short message indication information; or, when the short message indication information included in the first downlink control message is a first bit value or a second bit value, on any reserved bit of the short message corresponding to the short message indication information; wherein, the first bit value or the second bit value is used to indicate that there is system information change.

[0070] In a possible implementation manner, the indication message is carried in the resource scheduling information of the PDSCH; wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

[0071] In a possible implementation manner, the second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcast, or a new type of downlink control message.

[0072] In a possible implementation manner, the indication message is carried on a newly added bit.

[0073] In a possible implementation manner, the transceiver unit (or the sending unit) is further configured to: send configuration information to the UE, and the configuration information includes at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set.

[0074] In a possible implementation manner, the first set includes M pieces of system information, the second set includes N pieces of system information other than the M pieces of system information, and M and N are positive integers. Wherein, the M pieces of system information and the N pieces of system information belong to the first cell.

[0075] Based on the above various implementation manners, the system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

[0076] In a seventh aspect, a communication device is provided. The communication device may be a UE, or a chip or chip system used in a UE. The communication device includes a communication interface and a processor. Optionally, a memory is further included. The memory is used to store a computer program. The processor is coupled to the memory and the communication interface. When the processor reads the computer program or instruction, the communication device is caused to execute the methods performed by the UE in the above aspects.

[0077] In an eighth aspect, a communication device is provided. The communication device may be a network device, or a chip or chip system used in a network device. The communication device includes a communication interface and a processor. Optionally, a memory is further included. The memory is used to store a computer program. The processor is coupled to the memory and the communication interface. When the processor reads the computer program or instruction, the communication device is caused to execute the methods performed by the network device in the above aspects.

[0078] In a ninth aspect, a communication system is provided, including a UE and a network device. The UE is used to execute the methods performed by the UE in the above aspects, and the network device is used to execute the methods performed by the network device in the above aspects. For example, the UE may be implemented by the communication device described in the fifth aspect or the seventh aspect; the network device may be implemented by the communication device described in the sixth aspect or the eighth aspect.

[0079] In a tenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium is used to store a computer program or instruction. When it runs, the methods performed by the UE or the network device in the above aspects are implemented.

[0080] In an eleventh aspect, a computer program product containing instructions is provided. When it runs on a computer, the methods described in the above aspects are implemented.

[0081] In a twelfth aspect, a chip system is provided, including a processor and an interface. The processor is used to call and run instructions from the interface so that the chip system implements the methods in the above aspects.

[0082] Regarding the technical effects brought by the fifth aspect to the twelfth aspect and their various optional embodiments, reference may be made to the introduction of the technical effects of the first aspect or the corresponding embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 is a schematic diagram of the architecture of a communication system 1000 to which an embodiment of the present application is applied;

[0084] Figure 2 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0085] Figure 3 One of the schematic flowcharts of a communication method provided by an embodiment of the present application;

[0086] Figure 4 SIB1-less resource block schematic diagram provided by an embodiment of the present application;

[0087] Figure 5 Another schematic flowchart of a communication method provided by an embodiment of the present application;

[0088] Figure 6 Schematic diagram of a device provided by an embodiment of the present application;

[0089] Figure 7 Schematic diagram of another device provided by an embodiment of the present application. Detailed implementation manners

[0090] The technical solutions of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0091] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: universal mobile telecommunications system (UMTS) system, code division multiple access (CDMA) system, wireless local area network (WLAN), sidelink communication system, 4th generation (4G) communication system, 5th generation (5G) wireless communication system, 6th generation (6G) communication system or other future evolved systems, or other various wireless communication systems adopting wireless access technologies, etc. As long as there is a change in system information in the communication system, the technical solutions of the embodiments of the present application can be adopted.

[0092] Figure 1 It is a schematic architecture diagram of a communication system 1000 to which the embodiments of the present application are applied. As Figure 1 shown, the communication system includes a radio access network 100 and a core network 200. Optionally, the communication system 1000 may further include the Internet 300. Among them, the radio access network 100 may include at least one network device (such as Figure 1 110a and 110b in Figure 1among 120a - 120j). The terminal device is connected to the network device wirelessly, and the network device is connected to the core network wirelessly or wired. The core network device and the network device can be independent different physical devices, or the functions of the core network device and the logical functions of the network device can be integrated on the same physical device, or the functions of part of the core network device and part of the network device can be integrated on a physical device. The terminal devices can be connected to each other, and the network devices can be connected to each other, either wired or wirelessly. Figure 1 This is just a schematic diagram, and other network devices may also be included in this communication system, such as relay devices and backhaul devices, which are not drawn in Figure 1 it.

[0093] The network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (Wi-Fi) system, etc.; it can also be a module or unit that completes part of the functions of a base station. For example, it can be a central unit (CU) or a distributed unit (DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete part or all of the functions of the physical layer. For specific descriptions of the above protocol layers, reference can be made to the relevant technical specifications of the 3rd generation partnership project (3GPP). The network device can be a macro base station (such as Figure 1 110a in Figure 1In 110b), it can also be a relay node, a donor node, etc. Embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device. Among them, the main function of the network device is to send radio waves to the terminal device. On the one hand, it can achieve downlink data transmission, and on the other hand, it sends scheduling information to control uplink transmission, and receives the radio waves sent by the terminal device to receive uplink data transmission.

[0094] The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal device can be widely applied to various scenarios. For example, device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. Embodiments of the present application do not limit the specific technologies and specific device forms adopted by the terminal device. Among them, the main functions of the terminal device can include but are not limited to: receiving control information and downlink data from the network device, and sending electromagnetic waves to transmit uplink data to the network device; some terminal devices can also collect data.

[0095] The network device and the terminal device can be fixed in position or movable. The network device and the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. Embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0096] The roles of the network device and the terminal device can be relative. For example, Figure 1 the helicopter or drone 120i in can be configured as a mobile base station. For those terminal devices 120j that access the radio access network 100 through 120i, 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, the communication between 110a and 120i is through the radio air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between network devices. At this time, relative to 110a, 120i is also a network device. Therefore, both the network device and the terminal device can be uniformly referred to as communication devices. Figure 1110a and 110b therein can be referred to as communication devices with network device functions. Figure 1 120a - 120j therein can be referred to as communication devices with terminal device functions.

[0097] Communication can be carried out between network devices and terminal devices, between network devices and network devices, and between terminal devices and terminal devices through authorized spectrum, or through unlicensed spectrum, or simultaneously through authorized spectrum and unlicensed spectrum; communication can be carried out through spectrum below 6 gigahertz (GHz), or through spectrum above 6 GHz, or simultaneously use spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0098] In the embodiments of the present application, the functions of network devices can also be executed by modules (such as chips) in network devices, or by control subsystems including network device functions. The control subsystems including network device functions here can be control centers in the above application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of terminal devices can also be executed by modules (such as chips or modems) in terminal devices, or by devices including terminal device functions.

[0099] The network architecture and service scenarios described in the embodiments of the present application are for more clearly explaining the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0100] In the embodiments of the present application, for a terminal device to communicate with a network device means that the terminal device sends an uplink signal or uplink information to the network device, and the uplink information is carried on an uplink channel, and / or the network device sends a downlink signal or downlink information to the terminal device, and the downlink information is carried on a downlink channel. In order to communicate with the network device, the terminal device needs to establish a wireless connection with a cell controlled by the network device (i.e., the terminal device camps on the cell controlled by the network device). The cell that establishes a wireless connection with the terminal device is called the serving cell of the terminal device (i.e., the cell that provides services for the terminal device).

[0101] The terminal device can be located within the coverage of one or more cells (carriers), and the serving cell(s) for the terminal device can be one or more. For example, Figure 2In the scenario shown, the terminal device is simultaneously within the coverage ranges of cell 1 controlled by network device 1, cell 2 controlled by network device 2, and cell 3 controlled by network device 3. Both cell 1 and cell 2 and cell 3 can provide services to the terminal device. It should be noted that Figure 2 Taking the example of a network device controlling only one cell, in actual applications, a network device can control multiple cells simultaneously. When there are multiple cells providing services to the terminal device, the terminal device can operate in the manner of carrier aggregation (CA), dual connectivity (DC), or coordinated multiple points transmission / reception (CoMP). One or more cells can provide one or more of the wireless resources corresponding to more than one set of transmission parameters, etc. for the terminal device.

[0102] In addition, when a cell communicates with the terminal device (such as the cell sending a downlink signal to the terminal device and / or the cell receiving an uplink signal from the terminal device), it means that the network device to which the cell belongs (such as the base station controlling the cell) communicates with the terminal device. When cells communicate with each other, for example, when one cell communicates with another cell, if these two cells belong to different network devices (such as two cells controlled by different base stations respectively), it means that the network device to which the one cell belongs communicates with the network device to which the other cell belongs (such as the two network devices transmitting messages). If these two cells belong to the same network device (such as two cells controlled by the same base station), it means that the functional module controlling the one cell in the network device and the functional module controlling the other cell in the network device perform signaling or data interaction within the network device.

[0103] In the embodiments of the present application, the terms "system" and "network" may be used interchangeably; "cell", "base station", and "network device" may also be used interchangeably. For example, a "target cell" may also be referred to as a "target base station" or a "target network device", and for another example, a "source cell" may also be referred to as a "source base station" or a "source network device". "Multiple" means two or more. In view of this, in the embodiments of the present application, "multiple" may also be understood as "at least two". "At least one" can be understood as one or more, for example, understood as one, two, or more. For example, including at least one means including one, two, or more, and it does not limit which ones are included. For example, including at least one of A, B, and C, then what can be included are A, B, C, A and B, A and C, B and C, or A, B, and C. Similarly, the understanding of descriptions such as "at least one kind" is similar. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / ", unless otherwise specified, generally represents an "or" relationship between the associated objects before and after.

[0104] Unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, time sequence, priority, or importance of multiple objects, and the descriptions of "first" and "second" do not necessarily limit that the objects are different.

[0105] First, the related technical features involved in the embodiments of the present application will be explained below to facilitate the understanding of those skilled in the art. It should be noted that these explanations are for making the embodiments of the present application easier to understand and should not be regarded as a limitation on the protection scope required by the present application.

[0106] (1) Subcarrier: In an orthogonal frequency division multiplexing (OFDM) system, the frequency domain resources are divided into several sub-resources, and each sub-resource in the frequency domain can be called a subcarrier. Among them, a subcarrier can also be understood as the smallest granularity of frequency domain resources.

[0107] (2) Subcarrier spacing: In an OFDM system, it is the interval value between the center positions or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in a long term evolution (LTE) system is 15 kilohertz (kHz), and the subcarrier spacing in the new radio (NR) system of 5G can be 15 kHz, or 30 kHz, or 60 kHz, or 120 kHz, etc.

[0108] (3) Resource Block: N consecutive subcarriers in the frequency domain can be referred to as a resource block. For example, a resource block in the LTE system consists of 12 subcarriers, and a resource block in the NR system of 5G also consists of 12 subcarriers. As the communication system evolves, the number of subcarriers included in a resource block can also be other values.

[0109] (4) Time Slot: In the 5G NR system, a time slot consists of 14 OFDM symbols. The time slot length corresponding to a 15 kHz subcarrier spacing is 1 millisecond (ms), and the time slot length corresponding to a 30 kHz subcarrier spacing is 0.5 ms.

[0110] (5) Subframe: In the 5G NR system, the time length of a subframe is 1 ms.

[0111] (6) Time-Frequency Resource Unit: The smallest resource granularity in the OFDM system, which is one OFDM symbol in the time domain and one subcarrier in the frequency domain. An OFDM symbol can also be understood as the smallest time unit in the time domain of the OFDM system.

[0112] (8) Radio Network Temporary Identifier (RNTI): RNTI can be used for but not limited to differentiating or identifying the following information: terminal devices connected in a cell; specific radio channels; a group of terminal devices in a paging scenario; a group of terminal devices receiving power control parameters; system information sent by the network device for all terminal devices, etc.

[0113] Exemplarily, an RNTI can be a 16-bit identifier, and its value depends on the type of RNTI. For example, the types of RNTI can include but not limited to: RNTI for paging, denoted as P-RNTI; RNTI for system information broadcast, denoted as (system information radio network temporary identifier, SI-RNTI); cell radio network temporary identifier (C-RNTI) for data scheduling; modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI); configured scheduling radio network temporary identifier (CS-RNTI), etc.

[0114] (9) Paging: The network device broadcasts a message over the air interface to notify idle or inactive mode terminal devices to enter the active mode; or, update the system information for idle / inactive / connected mode terminal devices.

[0115] The frame for sending paging can be called a paging frame. Some time-frequency resources in the paging frame are used for sending paging information, which is called a paging occasion (PO). Each paging occasion is assigned to one or more terminal devices, and the terminal devices wait for paging information at the assigned paging occasion.

[0116] (10) System Information Block (SIB): A resource block carrying system information. The system information is classified and broadcast to terminal devices on different SIBs. Among them, the scheduling information of SIB1 is notified by the initial access signal, that is, by the Master Information Block (MIB); the scheduling information of other SIBs is notified by SIB1. When the system information needs to be updated, the network device notifies the terminal device to receive the update at the specified resource through paging.

[0117] (10-1) SIB1

[0118] In 5G NR, each cell needs to send the system information belonging to this cell. The system information is divided into minimum system information (SI) and other system information (OSI). Among them, the minimum SI is transmitted on the MIB and SIB1, while the OSI is transmitted in other system information blocks, such as SIB2, SIB3, etc. SIB1 is transmitted on the downlink shared channel (DL-SCH) with a period of 160 ms. The default transmission repetition period of SIB1 is 20 ms, but the actual transmission repetition period depends on the network implementation. SIB1 can also be considered as the remaining minimum system information (RMSI); it can also be considered as the first system information sent after the MIB.

[0119] (10-2) System Information Change

[0120] System information changes generally occur only on specific radio frames, which are the modification periods. During a modification period, if the system information of some terminal devices needs to be updated, the network device sends paging DCI on the POs corresponding to these terminal devices (which can also be understood as being carried on the physical downlink control channel (PDCCH) scrambled by P-RNTI), indicating the system information change.

[0121] It should be noted that in addition to indicating the system information change, this paging DCI can also schedule a physical downlink shared channel (PDSCH), and the PDSCH carries the paging information. In each modification period, the terminal device can listen for paging DCI on its corresponding PO one or more times according to the specific configuration.

[0122] Under the existing standard solution (refer to TS 38.212 Clause 7.3.1.2.1), the DCI indicating the system information change is DCI format 1_0. It includes a short message indicator. Among them, the short message indicator can be used to indicate whether the short message takes effect. The short message indicator is shown in Table 1 below:

[0123] Table 1

[0124]

[0125] Among them, the short message indicator occupies 2 bits. From Table 1, the following information can be obtained: "11" means that this DCI indicates that there is a paging message (that is, this DCI will schedule paging information later, that is, the terminal device needs to detect paging information), and at the same time indicates the system information change; "10" means that this DCI only indicates the system information change; "01" means that this DCI only indicates the paging message; "00" is a reserved bit.

[0126] When the short message indicator is "11" or "10", it can indicate the system information change. The corresponding short message indication is shown in Table 2 below:

[0127] Table 2

[0128]

[0129] As can be seen from Table 2, the short message mainly indicates the type of system information change. Specifically, the first 4 bits included in the short message respectively indicate different system information functions. Among them, when bit 1 included in Table 2 is set to 1, it indicates that there is a system information change; bits 5 - 8 are reserved bit positions. The short message only exists (existence can also be understood as being effective) when the short message indicator indicates a system information change, that is, when the short message indicator is "11" or "10", the short message exists.

[0130] From the above Table 1 and Table 2, it can be seen that currently, although the paging message can carry a system information change indication, it can only notify the terminal device that there is a system information change, and cannot notify the terminal device which specific system information has changed.

[0131] In a communication network, in order to enable a terminal device to identify a network device, the network device usually has to send some always - on public signals, resulting in waste of resources. Among them, the public signals can include, for example, but are not limited to: SSB, SIB1, paging, etc. Therefore, how to reduce the transmission of public signals in the network is an important means to achieve energy saving of network devices.

[0132] In view of this, an embodiment of the present application provides a communication method. The applicable scenario of this method is that multiple system information belonging to the same cell can be carried by multiple different cells. In this way, there can be some cells that only send part of the system information belonging to their own cells, and such cells can also be called energy - saving cells (NES cells); there can also be some cells that can not only send the system information belonging to their own cells, but also send the system information belonging to other cells at the same time, and such cells can also be called anchor cells. By this means, the transmission frequency of NES cells can be reduced, and since the anchor cell itself will also send the system information belonging to its own cell and send the system information belonging to other cells at the same time, the additional power consumption required is less. Therefore, this method can reduce the energy consumption of network devices.

[0133] Among them, the embodiments of the present application do not limit the type and quantity of the system information sent by the NES cell on the anchor cell. Exemplarily, in the scenario where cell 1 is the anchor cell and cell 2 is the NES cell, for example, the SIB1 belonging to cell 2 can be carried on cell 1, or for another example, the SIB2 belonging to cell 2 can be carried on cell 1, or for yet another example, both the SIB1 and SIB2 belonging to cell 2 are carried on cell 1.

[0134] In addition, the embodiments of the present application do not limit the quantity of the system information belonging to the same NES cell carried. For example, the NES cell can be carried on two cells, or three cells, or even more cells. For example, the SIB1 belonging to cell 2 is carried on cell 1, and the SIB2 belonging to cell 2 is carried on cell 3, while other system information except for SIB1 and SIB2 is carried on cell 2. For another example, the SIB1 and SIB2 belonging to cell 2 are carried on cell 1, and the SIB3 and SIB4 belonging to cell 2 are carried on cell 3, while other system information except for SIB1 to SIB4 is carried on cell 2.

[0135] Similarly, the embodiments of the present application do not limit the quantity of the cells to which the system information simultaneously sent by the anchor cell belongs. For example, it can belong to two cells, or three cells, or even more cells. For example, on cell 1, the system information belonging to cell 1 itself can be carried, and the SIB1 and / or SIB2 belonging to cell 2 can also be carried, and the SIB1 and / or SIB2 belonging to cell 4 can also be carried, etc.

[0136] In addition, the multiple cells carrying the system information of the NES cell can correspond to the same network device, or can also correspond to different network devices, and the present application does not limit this. For example, cell 2 corresponds to network device 2, and cell 1 also corresponds to network device 2. For another example, cell 2 corresponds to network device 2, and cell 1 also corresponds to network device 1.

[0137] Based on the above scenarios, in the method provided by the embodiments of the present application, the terminal device can determine which cell's carried system information has changed according to the indication message of the system information change; for example, whether it is the system information carried by its own cell that has changed, or the system information carried by another cell that has changed. Exemplarily, the indication message of the system information change can be implemented by multiplexing the existing DCI, or can also be implemented by the newly added DCI. In this way, through the indication message of the system information change, the power consumption of the terminal device can be reduced; and by carrying the system information belonging to the same cell on different cells, the energy saving of the network device can be achieved.

[0138] An embodiment of the present application provides a communication method. Please refer to Figure 3 , which is a flowchart of this method.

[0139] S300. The network device sends configuration information to the UE. Correspondingly, the UE receives the configuration information from the network device. Among them, the UE is located in the first cell.

[0140] In a possible scenario, Figure 4 is a schematic diagram of a resource block provided by an embodiment of the present application. Taking cell 1 as the anchor cell and cell 2 as the NES cell as an example, and taking the SIB1 of cell 2 being carried on cell 1 as an example, other possible examples can refer to this example, and the present application will not repeat the introduction. As Figure 4 shown, in order to further reduce the energy consumption of the base station, the network device can carry part of the system information of cell 2 in cell 1; in other words, in addition to sending the SIB1 and OSI of cell 1, cell 1 can also send the system information of cell 2 (such as SIB1). Therefore, this scenario can also be called a SIB1-less transmission scenario, or other SIB-less scenarios. In this way, for cell 2, since the transmission of SIB1 is saved, the energy consumption of the base station can be reduced. It should be noted that although on cell 1, the SIB1 of cell 2 is sent more, as Figure 4 shown in the extended SIB1, the extended SIB1 includes not only the SIB1 belonging to cell 1, but also the SIB1 belonging to cell 2; however, the SIB1 of cell 1 itself will also be sent on cell 1 originally, so the increase in the energy consumption of cell 1 caused by additionally sending the SIB1 of cell 2 is relatively small.

[0141] Based on Figure 4 the scenario shown, the network device can synchronize the cell bearer information corresponding to the system information of the cell to the UE. Exemplarily, it can be implemented as the network device sending configuration information to the UE, and indicating the cell bearer information through the configuration information.

[0142] In an alternative example, the configuration information includes: the system information included in the first set and the system information included in the second set. Exemplarily, the system information included in the sets in the configuration information can be represented in the form of identifiers. It can also be understood that the first set includes the identifiers of M system information, and the M system information belongs to the first cell; and, the M system information is carried by the first cell, that is, the first cell itself carries the M system information. The second set includes the identifiers of N system information, and the N system information also belongs to the first cell; and, the N system information is carried by the second cell, that is, the other cell carries the N system information. Wherein, M and N are positive integers. Optionally, the first set includes other system information except SIB1; the second set includes SIB1.

[0143] In another alternative example, the configuration information includes: the identifiers of the system information included in P sets respectively. Wherein, P is a positive integer greater than 2. For example, P can be 3, and the configuration information includes: the system information included in the first set, the system information included in the second set, and the system information included in the third set. Exemplarily, the system information included in the sets in the configuration information can be represented in the form of identifiers. Among them, the first set and the second set can refer to the foregoing introduction content. The third set can include the identifiers of L system information, and the L system information belongs to the first cell; and, the L system information is carried by the third cell. Wherein, L is a positive integer.

[0144] It should be understood that the configuration information can include at least two sets, and different sets can be carried in different cells. Exemplarily, the configuration information can be generated according to the actual distribution scenario of the system information. In the following embodiments, taking the configuration information including two sets as an example, it can also be understood that the configuration information includes the first set and the second set. It should be understood that for the case where the configuration information includes more sets, reference can be made to the introduction content of the following embodiments. For example, a possible configuration information corresponding to the first cell is shown in Table 3 below:

[0145] Table 3

[0146] Set identifier Identifier of system information belonging to the first cell Carried on First set Identifiers of M system information First cell Second set Identifiers of N system information Second cell

[0147] As can be seen from Table 3, the system information corresponding to the first cell can be carried on the first cell and the second cell, thereby reducing the energy consumption of network devices. Through the configuration information, when the system information changes, the set identifier can be used to accurately indicate which cell the changed system information is carried on. For example, when the system information belonging to the first set changes, the indication message in S301 below can be used to indicate that the system information carried on the first cell has changed, that is, it can indicate that the system information included in the first set has changed. Another example is that when the system information belonging to the second set changes, the indication message in S301 below can be used to indicate that the system information carried on the second cell has changed, that is, it can indicate that the system information included in the second set has changed.

[0148] Based on the above examples, the system information carried on different cells can include the same system information; or it can also include completely different system information, which can also be understood as being complementary sets. For example, for the scenario where the same system information is included, the corresponding configuration information can be as shown in Table 4-1 below:

[0149] Table 4-1

[0150] Set identifier System information belonging to the first cell Carried on First set Including one or more of the following: SIB2, SIB3, SIB4, SIB5, etc. First cell Second set SIB1, SIB2 Second cell

[0151] As can be seen from Table 4-1, in different sets, the same system information can be included, such as SIB2. It can also be understood that SIB2 is carried on both the first cell and the second cell.

[0152] Another example is that for the scenario where completely different system information is included, the corresponding configuration information can be as shown in Table 4-2 below:

[0153] Table 4-2

[0154] Set identifier System information belonging to the first cell Carried on First set Including one or more of the following: SIB2, SIB3, SIB4, SIB5, etc. First cell Second set SIB1 Second cell

[0155] As can be seen from Table 4-2, the N system information included in the second set is SIB1, that is, N is 1, and the M system information included in the first set is other system information except SIB1. Among them, in different sets, the included system information is completely different. It can also be understood that when the system information is carried on one cell, it can no longer be carried on other cells, thereby reducing the occupancy of the bandwidth and reducing the repeated transmission of system information. For example, the first set includes other system information except SIB1, which can also be understood that the system information belonging to the first cell carried on the first cell can be OSI, such as including one or more of the following: SIB2, SIB3, SIB4, SIB5, etc. The second set includes SIB1, which can also be understood that the system information belonging to the first cell carried on the second cell can be only SIB1.

[0156] Based on the content introduced in S300, the UE can obtain the cell bearer information of the system information belonging to the first cell through the configuration information, so as to receive the indication message from the network device introduced in the subsequent content, thereby determining on which cell the updated system information is carried, and further accurately detecting the system information and reducing the power consumption of the UE.

[0157] S301. The network device sends an indication message to the UE. Correspondingly, the UE receives the indication message from the network device. Optionally, the indication message may indicate that the system information included in the first set has changed. Another option is that the indication message may also indicate that the system information included in the second set has changed.

[0158] In one possible scenario, the UE receives the indication message from the network device on the first cell. In another possible scenario, the UE receives the indication message from the network device on the second cell.

[0159] The following introduces several possible implementation manners of the indication message, including but not limited to:

[0160] Scenario A: Reusing the existing DCI

[0161] In an optional embodiment, the indication message may be carried in the paging DCI in the foregoing content. Combining the foregoing introduction to RNTI, the paging DCI may be carried on the PDCCH scrambled by P-RNTI.

[0162] Exemplarily, the paging DCI includes a short message indicator as shown in Table 1. The short message indicator is used to indicate a short message. When the short message indicator is used to indicate the existence of system information change, the short message takes effect. Therefore, the change of the system information included in the target set can be further indicated through the short message. Optionally, the short message includes the indication message. In this way, through the short message indicator and the short message, not only the existence of system information change can be indicated, but also the change of the system information carried on which cell can be further indicated.

[0163] For example, it can be implemented such that the short message indicator included in the DCI is "00", and the indication message can be carried by any bit among the 8 bits included in the short message indicated by the short message indicator. In this way, the indication message can be carried by the short message correspondingly indicated by the reserved field in the short message indicator. Under the current standard definition, when the short message indicator is "00", it belongs to the reserved field, so the function of this reserved field can be newly added; correspondingly, any bit position of the short message indicated when the short message indicator is "00" can be used, so the function of the short message can be newly added.

[0164] Also for example, it can also be implemented such that the short message indicator included in the DCI is "10" or "11", and the indication message can be carried by any bit among the 4 reserved bits included in the short message indicated by the short message indicator, that is, by any bit among bit5 to bit8 of the short message. In this way, when it is indicated by the current standard definition that there is a change in the system information for the short message indicator, the indication message can also be carried by the reserved bit position of the corresponding short message.

[0165] Another exemplary case is that the indication message can also be carried in the newly added bits in the paging DCI in the foregoing content. It can be understood that the indication message in the embodiments of the present application can be carried at any position where bits can be newly added to the paging DCI.

[0166] In scenario A, by multiplexing the existing DCI, it is possible to achieve not adding a new DCI format and not affecting the original function of the paging DCI, and further achieve the indication of the cell information carrying the updated system information, thereby reducing the power consumption of the UE.

[0167] Scenario B: New DCI

[0168] Combined with the introduction of the RNTI in the foregoing content, the type of RNTI can be determined by a 16-bit identifier, and the new DCI can be carried on the PDCCH scrambled by the newly added RNTI. Among them, the newly added RNTI is a newly added type of RNTI.

[0169] Exemplarily, the newly added DCI can be used to indicate that the system information included in the target set has changed. In this way, by means of the newly added DCI, the UE can obtain which cell the system information is carried on has changed.

[0170] Exemplarily, the indication message can be carried in the first indication field of the newly added DCI. Considering that the newly added DCI has not yet had a function definition, the indication message can be carried in any indication field. Another exemplarily, the indication message can also be carried in the newly added bit field in the newly added DCI.

[0171] In scenario B, the type of the newly added DCI can also be used to indicate the cell information carrying the updated system information, thereby reducing the power consumption of the UE.

[0172] Scenario C, PDSCH

[0173] Exemplarily, the PDSCH can also be used to indicate that the system information included in the target set has changed. In this way, by means of the PDSCH, the UE can also obtain which cell the system information is carried on has changed. Optionally, the PDSCH can be scheduled by the paging DCI. At this time, the PDSCH carries the paging information, as shown in Figure 4 shown. Another option is that the PDSCH can be scheduled by the SI-DCI (which can also be understood as being carried on the PDCCH scrambled by the SI-RNTI). At this time, the PDSCH carries the system information broadcast message. Another option is that the PDSCH can be scheduled by the newly added type of DCI (which can also be understood as being carried on the PDCCH scrambled by the newly added RNTI); among them, the newly added type of DCI can be the DCI with newly added functions defined in future standards, etc.

[0174] Optionally, the indication message can be carried in the second indication field or the newly added bit field of the PDSCH scheduled by the paging DCI in the foregoing content.

[0175] In scenario C, the cell information carrying the updated system information can also be indicated through the resource scheduling information of the DCI, thereby reducing the power consumption of the UE.

[0176] S302. The network device sends the changed system information to the UE in the first cell or the second cell. Correspondingly, the UE detects the system information included in the first set in the first cell or the system information included in the second set in the second cell according to the indication message.

[0177] It can be understood that when the UE determines, based on the indication message, that the system information included in the first set has changed, and it can be determined based on the configuration information that the system information included in the first set is carried by the first cell, the UE can thus detect the system information and obtain the updated system information. Alternatively, when the UE determines, based on the indication message, that the system information included in the second set has changed, and it can be determined based on the configuration information that the system information included in the second set is carried by the second cell, the UE can thus detect the system information on the second cell and obtain the updated system information.

[0178] Through the method provided by the embodiments of the present application, the UE can determine the cell carrying the updated system information through the indication message of the network device. In this way, in a scenario where the system information is carried by multiple different cells, the network device can not only indicate to the UE that there is a change in the system information, but also indicate to the UE the cell corresponding to the updated system information, so that the UE can respond to the change in the system information without detecting in multiple cells, thereby reducing the power consumption of the UE. Moreover, based on the fact that the system information can be carried by multiple different cells, the transmission of public signals in the network can also be reduced, thereby achieving energy saving of the network device.

[0179] The embodiments of the present application provide a communication method. Please refer to Figure 5 , which is a flowchart of this method.

[0180] S500. The network device sends configuration information to the UE. Correspondingly, the UE receives the configuration information from the network device. Herein, the UE is located in the first cell. Exemplarily, the configuration information may include at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set. Wherein, the system information included in the first set and the system information included in the second set both belong to the system information of the first cell. Moreover, the system information included in the first set is carried on the first cell, that is, carried on its own cell; the system information included in the second set is carried on the second cell, that is, carried on other cells.

[0181] S501. The network device sends an indication message to the UE on the first cell. Correspondingly, the UE receives the indication message from the network device. Wherein, the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent on the second cell. It can be understood that the network device can indicate to the UE that the system information carried on other cells has changed.

[0182] S502. The network device sends system information in the second cell, and the system information includes the system information that has changed in the first cell. Correspondingly, the UE detects the changed system information in the second cell according to the indication message. The UE can, according to the indication of the network device, detect the changed system information on the corresponding serving cell where the system information has changed, so as to obtain the changed system information.

[0183] The implementation processes of S500 to S502 can refer to Figure 3 the corresponding introduction content, which will not be repeated here.

[0184] Based on the same inventive concept, Figure 6 a schematic structural diagram of a communication device provided in an embodiment of the present application is given. The communication device 600 may be Figure 3 the UE or the circuit system of the UE described in the embodiment shown, and is used to implement the method corresponding to the UE in the above method embodiment. Alternatively, the communication device 600 may be Figure 3 the network device or the circuit system of the network device described in the embodiment shown, and is used to implement the method corresponding to the network device in the above method embodiment. Among them, for example, a circuit system is a chip system.

[0185] The communication device 600 includes at least one processor 601. The processor 601 can be used for internal processing of the device to implement certain control processing functions. Optionally, the processor 601 includes instructions. Optionally, the processor 601 can store data. Optionally, different processors can be independent devices, can be located at different physical locations, and can be located on different integrated circuits. Optionally, different processors can be integrated in one or more processors, for example, integrated on one or more integrated circuits.

[0186] Optionally, the communication device 600 includes one or more memories 603 for storing instructions. Optionally, data can also be stored in the memory 603. The processor and the memory can be set separately or integrated together.

[0187] Optionally, the communication device 600 includes a communication line 602 and at least one communication interface 604. Among them, since the memory 603, the communication line 602, and the communication interface 604 are all optional items, they are Figure 6 all represented by dashed lines.

[0188] Optionally, the communication device 600 may further include a transceiver and / or an antenna. Among them, the transceiver can be used to send information to other devices or receive information from other devices. The transceiver can be referred to as a transceiver, a transceiver circuit, an input / output interface, etc., and is used to implement the transceiver function of the communication device 600 through the antenna. Optionally, the transceiver includes a transmitter and a receiver. Exemplarily, the transmitter can be used to generate a radio frequency signal from a baseband signal, and the receiver can be used to convert a radio frequency signal into a baseband signal.

[0189] The processor 601 may include a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the solution of the present application.

[0190] The communication line 602 may include a path for transmitting information between the above components.

[0191] The communication interface 604 uses any device of the transceiver type for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), wired access networks, etc.

[0192] The memory 603 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 603 may exist independently and be connected to the processor 601 through the communication line 602. Alternatively, the memory 603 may also be integrated with the processor 601.

[0193] Among them, the memory 603 is used to store computer-executable instructions for implementing the solution of this application, and is controlled by the processor 601 for execution. The processor 601 is used to execute the computer-executable instructions stored in the memory 603, so as to implement Figure 3 the steps performed by the UE or network device described in the embodiments shown.

[0194] Optionally, the computer-executable instructions in the embodiments of this application can also be referred to as application code, and this application does not make specific limitations on this.

[0195] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as Figure 6 CPU0 and CPU1 in

[0196] In a specific implementation, as an embodiment, the communication device 600 may include multiple processors, such as Figure 6 processor 601 and processor 605 in

[0197] Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, the processor may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions). Figure 6 When the

[0198] device shown is a chip, such as a chip of a UE or a chip of a network device, then the chip includes a processor 601 (which may also include a processor 605), a communication line 602, and a communication interface 604. Optionally, it may include a memory 603. Specifically, the communication interface 604 may be an input interface, a pin, or a circuit, etc. The memory 603 may be a register, a cache, etc. The processor 601 and the processor 605 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the communication method in any of the above embodiments. Figure 7A schematic diagram of a device is shown. The device 700 may be a UE or a network device involved in each of the foregoing method embodiments, or a chip in the UE or a chip of the network device. The device 700 includes a sending unit 701, a processing unit 702, and a receiving unit 703.

[0199] It should be understood that the device 700 may be used to implement the steps performed by the UE or the network device in the communication method of the embodiments of the present application. For related features, reference may be made to the Figure 3 embodiments shown above and will not be elaborated herein.

[0200] Optionally, Figure 7 the functions / implementation processes of the sending unit 701, the receiving unit 703, and the processing unit 702 in Figure 6 may be implemented by the processor 601 in Figure 7 calling computer-executable instructions stored in the memory 603. Or, Figure 6 the function / implementation process of the processing unit 702 in Figure 7 may be implemented by the processor 601 in Figure 6 calling computer-executable instructions stored in the memory 603, and

[0201] the functions / implementation processes of the sending unit 701 and the receiving unit 703 in

[0202] may be implemented by the communication interface 604 in

[0203] . Optionally, when the device 700 is a chip or a circuit, the functions / implementation processes of the sending unit 701 and the receiving unit 703 may also be implemented by pins or circuits, etc.

[0202] The present application further provides a computer-readable storage medium storing a computer program or instructions. When the computer program or instructions are run, the method performed by the UE or the network device in the foregoing method embodiments is implemented. In this way, the functions described in the foregoing embodiments may be implemented in the form of software function units and sold or used as independent products. Based on such an understanding, the technical solution of the present application essentially, or the part that contributes, or a part of the technical solution may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing 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 the embodiments of the present application. The storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0203] The present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer is caused to execute the method performed by the UE or the network device in any of the foregoing method embodiments.

[0204] The embodiment of the present application further provides a processing device, including a processor and an interface; the processor is configured to execute the method performed by the UE or the network device involved in any of the above method embodiments.

[0205] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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 a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The available media can be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as DVDs), or semiconductor media (such as solid state disks (SSDs)), etc.

[0206] The various illustrative logical units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above designs. The general-purpose processor can be a microprocessor. Optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0207] The steps of the methods or algorithms described in the embodiments of this application can be directly embedded in hardware, software units executed by a processor, or a combination of the two. The software units can be stored in a RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, register, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be provided in an ASIC, and the ASIC can be provided in a UE. Optionally, the processor and the storage medium can also be provided in different components of the UE.

[0208] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in a process Figure 1 a process or multiple processes and / or blocks Figure 1 or steps for implementing the functions specified in multiple blocks or a block.

[0209] The content in the various embodiments of this application can be referred to each other. If there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be cited from each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0210] It can be understood that in the embodiments of this application, the UE and / or the network device can execute some or all of the steps in the embodiments of this application. These steps or operations are only examples. In the embodiments of this application, other operations or various deformations of the operations can also be executed. In addition, the various steps can be executed in different orders presented in the embodiments of this application, and it is possible not to execute all the operations in the embodiments of this application.

Claims

1. A communication method, characterized in that, Applied to a terminal device UE, including: Receiving an indication message from a network device, where the indication message is used to indicate that the system information included in a target set has changed, and the system information included in the target set is carried in a carrier of a target cell; where the target set is a first set and the target cell is a first cell; or the target set is a second set and the target cell is a second cell; Detecting, according to the indication message, the system information included in the target cell.

2. The method according to claim 1, characterized in that, The indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging the UE.

3. The method according to claim 1 or 2, characterized in that, The indication message is carried in a first downlink control message; the first downlink control message includes short message indication information, and the short message indication information is used to indicate a short message. When the short message indication information is used to indicate that there is a change in system information, the short message is used to indicate that the system information included in the target set has changed; where the short message includes the indication message.

4. The method according to claim 1, characterized in that, The indication message is carried in resource scheduling information of a physical downlink shared channel PDSCH; where the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

5. The method according to claim 4, characterized in that, The second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a newly added type of downlink control message.

6. The method according to any one of claims 1 to 5, characterized in that, The indication message is carried on a newly added bit included in the downlink control message.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The UE receives configuration information from the network device, and the configuration information includes at least one of the following information: an identifier of the system information included in the first set, an identifier of the system information included in the second set.

8. The method according to any one of claims 1 to 7, characterized in that, The first set includes M pieces of system information, and the second set includes N pieces of system information other than the M pieces of system information, where M and N are positive integers.

9. The method according to any one of claims 1 to 8, characterized in that, The system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

10. A communication method, characterized in that, Applied to a terminal device UE, including: Receiving an indication message from a network device, where the indication message is used to indicate that the system information of the first cell where the UE is located has changed, and is used to indicate that the changed system information is sent on a second cell; Detecting, according to the indication message, the changed system information on the second cell.

11. A communication method, characterized in that, Applied to a network device, including: Sending an indication message to a terminal device UE, where the indication message is used to indicate that the system information included in a target set has changed, and the system information included in the target set is carried in a carrier of a target cell; where the target set is a first set and the target cell is the first cell; or the target set is a second set and the target cell is a second cell; Sending the changed system information to the UE in the target cell.

12. The method according to claim 11, characterized in that, The indication message is carried in a first downlink control message; where the first downlink control message is used to schedule paging the UE.

13. The method according to claim 11 or 12, characterized in that, The indication message is carried in a first downlink control message; the first downlink control message includes short message indication information for indicating a short message. When the short message indication information is used to indicate that system information has changed, the short message is used to indicate that the system information included in the target set has changed; wherein, the short message includes the indication message.

14. The method according to claim 11, characterized in that, The indication message is carried in resource scheduling information of a physical downlink shared channel PDSCH; wherein, the resource scheduling information of the PDSCH is scheduled by a second downlink control message.

15. The method according to claim 14, characterized in that, The second downlink control message is a downlink control message for scheduling paging, or a downlink control message for system information broadcasting, or a new type of downlink control message.

16. The method according to any one of claims 11 to 15, characterized in that,The indication message is carried on an additional bit included in the downlink control message.

17. The method according to any one of claims 11 to 16, characterized in that, The method further includes: Sending configuration information to the UE, the configuration information including at least one of the following information: the identifier of the system information included in the first set, the identifier of the system information included in the second set.

18. The method according to any one of claims 11 to 17, characterized in that, The first set includes M pieces of system information, the second set includes N pieces of system information other than the M pieces of system information, and M and N are positive integers.

19. The method according to any one of claims 11 to 18, characterized in that, The system information included in the first set belongs to the first cell, and the system information included in the second set belongs to the first cell.

20. A communication method, characterized in that, Applied to a network device, including: Sending system information in a second cell, the system information including the system information that has changed in the first cell. Sending an indication message to a UE in the first cell, the indication message being used to indicate that the system information of the first cell where the UE is located has changed, and being used to indicate that the changed system information is sent in the second cell.

21. A communication device, characterized in that, The communication device includes a processing unit and a transceiver unit, the processing unit is coupled to the transceiver unit to execute the method according to any one of claims 1 to 10, or execute the method according to any one of claims 11 to 20.

22. A communication device, characterized in that, The communication device includes a processor and a memory, the memory is used to store a computer program, the processor is used to execute the computer program stored on the memory, so that the communication device executes the method according to any one of claims 1 to 10, or so that the communication device executes the method according to any one of claims 11 to 20.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, when the computer program runs on a computer, so that the computer executes the method according to any one of claims 1 to 10, or so that the computer executes the method according to any one of claims 11 to 20.

24. A computer program product, characterized in that, The computer program product includes a computer program, when the computer program runs on a computer, so that the computer executes the method according to any one of claims 1 to 10, or so that the computer executes the method according to any one of claims 11 to 20.

25. A chip system, characterized in that, The chip system includes: A processor and an interface, the processor being configured to call and execute instructions from the interface, and when the processor executes the instructions, implementing the method according to any one of claims 1 to 10, or implementing the method according to any one of claims 11 to 20.

26. A communication system, characterized in that, The communication system includes a terminal device and a network device, wherein, The terminal device is configured to execute the method according to any one of claims 1 to 10, and the network device is configured to execute the method according to any one of claims 11 to 20.

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