Communication method and apparatus

Abstract

Provided in the present application are a communication method and apparatus that multiplex an existing DCI format to transmit new indication information. The indication information is different from the existing DCI content, and DCI having different content is respectively transmitted by means of different time-frequency resources. Thus, the indication of new information does not require using system information, and transmission time of DCI is far less than that of the system information. Hence, information indication efficiency is improved. In other words, flexibility of the new indication information is improved. Further, transmitting DCI having different content on different time-frequency resources functionally decouples the new DCI from the existing DCI and improves the use efficiency of DCI.

Description

A communication method and apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202411381238.3, filed on September 29, 2024, and entitled "A communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of wireless communication, and in particular to a communication method and apparatus. BACKGROUND

[0003] With the gradual development of communication systems, the energy consumption of network devices has attracted more and more attention. According to the report of GSMA (Global System for Mobile communications Association), the energy cost of mobile networks accounts for about 23% of the total cost of operators, and most of the energy consumption comes from wireless access networks, especially active antenna units (AAU) and indoor baseband processing units (BBU), which account for more than 90% of the entire energy cost, while data centers and optical fiber transmission account for a smaller share. Therefore, the 3rd Generation Partnership Project (3GPP) sets up the Network Energy Saving (NES) topic, aiming to study methods to save network energy consumption.

[0004] A terminal device accesses a wireless access network through a physical random access channel (PRACH) resource, which can be configured by a network device. For example, the network device indicates the configured PRACH resource to the terminal device through high-level instructions such as system information blocks (SIBs), specifically such as SIB1 messages. The network device can reduce the power consumption of the network device by prolonging the period of the PRACH, i.e., prolonging the period of configuring the PRACH resource, but after prolonging the PRACH period, the terminal device needs to wait for a longer time to access the network. Therefore, in the 3GPP discussion, it is proposed to configure additional PRACH resources for terminal devices supporting NES in addition to the PRACH resources reserved for traditional terminal devices (i.e., terminal devices not supporting NES functions) to realize dynamic adjustment of PRACH resources in the time domain to adapt to dynamic changes in load.

[0005] The additional PRACH resource configuration can be implemented through semi-static signaling, which is transmitted through SIB1, a message related to system information, with a long transmission period usually in the order of milliseconds, resulting in a long adjustment period of the PRACH resource and poor flexibility. Moreover, the load change (i.e., the number of terminal devices) is a gradual process, and the PRACH resource may need to be frequently adjusted to adapt to the dynamically changing load, still having the problem of high power consumption. SUMMARY

[0006] Therefore, the present application provides a communication method and device, which uses downlink control information (DCI) to indicate the information of the new function, and the disclosed technical solutions are as follows:

[0007] In a first aspect, the present application provides a communication method applied to a network device, which includes: transmitting a first DCI (i.e., an existing DCI), the first DCI being used to indicate a first information to a terminal device; and transmitting a second DCI (i.e., a new DCI), the second DCI being used to indicate a second information to the terminal device, the second information being different from the first information, the format of the second DCI being the same as that of the first DCI, and the second reception position information of the second DCI being different from the first reception position information of the first DCI. The DCI is a lightweight message that can realize real-time control and management, so that the use of DCI to indicate information can shorten the information indication period and improve the flexibility of information indication. Moreover, the scheme multiplexes the existing DCI format to carry the indication information, and transmits it to the terminal device through a time-frequency resource different from the existing DCI, so as to decouple the new DCI from the existing DCI function and improve the use efficiency of the DCI.

[0008] In a possible implementation manner of the first aspect, the second reception position information of the second DCI is different from the first reception position information of the first DCI, including that the time domain position of the second DCI is mutually exclusive with the time domain position of the first DCI. In this way, only the different time domain positions are used to distinguish the DCIs with the same format and different contents, reducing the complexity of information indication.

[0009] In another possible implementation manner of the first aspect, the time domain position of the second DCI is mutually exclusive with the time domain position of the first DCI, including that at least one of the frame offset, the subframe offset, the slot offset and the OFDM symbol position of the search space of the second DCI is mutually exclusive with the search space of the first DCI. That is, different SearchSpace is configured to distinguish the DCIs with the same format and different contents by using different time domain resources, thereby reducing the complexity of DCI design.

[0010] In a possible implementation form of the first aspect, the first DCI comprises DCI1_0, DCI2_7, and DCI2_9.

[0011] In a possible implementation form of the first aspect, the first DCI is DCI1_0 scrambled with SI-RNTI; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: the time domain position of the second DCI is different from the time domain position of the first DCI in the current slot position of the SIB1. In this way, the new DCI can be distinguished from the existing DCI of the same format in the current slot position. In a possible implementation form of the first aspect, the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: the time domain position of the second DCI is the next slot position of all slot candidate positions for receiving the PDCCH scheduling the SIB1 calculated according to the last synchronization information block index. In this way, the new DCI can be different from all possible slot positions of the DCI1_0 scrambled with SI-RNTI, and the success rate of the new DCI transmission is improved.

[0012] In a possible implementation form of the first aspect, the first DCI is DCI2_7; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: the frame level offset corresponding to the second DCI is different from the frame level offset of the DCI2_7; and / or, the subframe offset of the second DCI is different from the subframe offset of the DCI2_7; and / or, the slot offset of the second DCI is different from the slot offset of the DCI2_7; and / or, the symbol level offset corresponding to the second DCI is different from the symbol level offset of the DCI2_7. It can be seen that when the new DCI is multiplexed with the existing DCI2_7, the new DCI can be distinguished from the existing DCI2_7 by configuring any time domain position corresponding to the new DCI to be different from the DCI2_7, and the flexibility of the new DCI design is improved.

[0013] In a possible implementation form of the first aspect, the first DCI is DCI2_9; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: the time domain position of the first DCI is an active period of cell discontinuous transmission and discontinuous reception, and the time domain position of the second DCI is a non-active period of the cell discontinuous transmission and discontinuous reception.

[0014] In a possible implementation form of the first aspect, the second receiving position information of the second DCI is different from the first receiving position information of the first DCI, comprising: the frequency domain position of the second DCI is different from the frequency domain position of the first DCI. In this way, the DCI of the same format and different content can be distinguished only by the different frequency domain positions, and the complexity of indicating the new information by the DCI is reduced.

[0015] In a possible implementation form of the first aspect, the frequency domain position of the second DCI is different from the frequency domain position of the first DCI, including that the CORESET corresponding to the second DCI is different from the CORESET of the first DCI. By configuring the CORESET of the new DCI to be different from the existing DCI, the frequency domain positions of the two DCIs can be made different.

[0016] In a possible implementation form of the first aspect, before the second DCI is sent, the method further includes: sending first indication information, the first indication information being used to indicate the format of the second DCI and the first receiving position information of the second DCI to the terminal device.

[0017] In a possible implementation form of the first aspect, the second DCI is used to indicate information of dynamic adjustment of common channel resources.

[0018] In a possible implementation form of the first aspect, the information indicated by the second DCI includes at least one of the following: information of dynamic adjustment of PRACH resources, information of dynamic adjustment of SSB resources, and information of dynamic adjustment of paging resources. In this way, the above-mentioned resource dynamic adjustment information carried by the DCI can shorten the period of resource dynamic adjustment and improve the flexibility of resource dynamic adjustment. Moreover, the scheme multiplexes the existing DCI format to carry the indication information and transmits the indication information to the terminal device through time-frequency resources different from the existing DCI, so as to decouple the new DCI from the existing DCI and improve the use efficiency of the DCI.

[0019] In a possible implementation form of the first aspect, the second DCI is used to indicate at least two different types of information. In this way, the use efficiency of the DCI can be improved.

[0020] In a possible implementation form of the first aspect, the format of the second DCI is the same as the format of the first DCI, including that the scrambling identifier of the first DCI is the same as the scrambling identifier of the first DCI, and the number of bits of the second DCI is the same as the number of bits of the first DCI.

[0021] In a second aspect, the present application further provides a communication method applied to a terminal device, including: receiving a first DCI based on first time-frequency position information, and obtaining first information by parsing the first DCI based on a first parsing manner; receiving a second DCI based on second time-frequency position information, and obtaining second information by parsing the second DCI based on a second parsing manner, the second information being different from the first information, the second time-frequency position information being different from the first time-frequency position information, and the format of the second DCI being the same as the format of the first DCI.

[0022] In a possible implementation manner of the second aspect, the second time-frequency location information is different from the first time-frequency location information, including: the time domain location of the second DCI is not overlapped with the time domain location of the first DCI.

[0023] In another possible implementation manner of the second aspect, the time domain location of the second DCI is not overlapped with the time domain location of the first DCI, including: at least one of the frame offset, the subframe offset, the slot offset and the OFDM symbol location of the search space of the second DCI is not overlapped with the frame offset, the subframe offset, the slot offset and the OFDM symbol location of the search space of the first DCI.

[0024] In another possible implementation manner of the second aspect, the first DCI includes DCI1_0, DCI2_7 and DCI2_9.

[0025] In another possible implementation manner of the second aspect, the first DCI is DCI1_0 scrambled by SI-RNTI; and the time domain location of the second DCI is not overlapped with the time domain location of the first DCI, including: the time domain location of the second DCI is not overlapped with the time domain location of the first DCI in the time domain location of the current SIB1.

[0026] In another possible implementation manner of the second aspect, the time domain location of the second DCI is not overlapped with the time domain location of the first DCI, including: the time domain location of the second DCI is a next slot location of all slot candidate locations of the PDCCH used to receive the SIB1 calculated according to a last synchronization information block index.

[0027] In another possible implementation manner of the second aspect, the first DCI is DCI2_7; and the time domain location of the second DCI is not overlapped with the time domain location of the first DCI, including: the frame level offset corresponding to the second DCI is different from the frame level offset of the DCI2_7; and / or, the subframe offset of the second DCI is different from the subframe offset of the DCI2_7; and / or, the slot offset of the second DCI is different from the slot offset of the DCI2_7; and / or, the symbol level offset corresponding to the second DCI is different from the symbol level offset of the DCI2_7.

[0028] In another possible implementation manner of the second aspect, the first DCI is DCI2_9; and the time domain location of the second DCI is not overlapped with the time domain location of the first DCI, including: the time domain location of the first DCI is an activation period of the cell discontinuous transmission and discontinuous reception function, and the time domain location of the second DCI is a deactivation period of the cell discontinuous transmission and discontinuous reception function.

[0029] In another possible implementation manner of the second aspect, the frequency domain location of the second DCI is not overlapped with the frequency domain location of the first DCI.

[0030] In a possible implementation of the second aspect, the frequency domain position of the second DCI does not overlap with the frequency domain position of the first DCI.

[0031] In a possible implementation of the second aspect, the information indicated by the second DCI includes at least one of the following: information of dynamic adjustment of PRACH resources, information of dynamic adjustment of SSB resources, and information of dynamic adjustment of paging resources.

[0032] In a possible implementation of the second aspect, the second DCI is used to indicate at least two different types of information.

[0033] In a third aspect, the present application further provides another communication method applied to a network device, the method comprising: sending first indication information, the first indication information being used to indicate position information of DCI received by a first terminal device; and sending the DCI based on the position information, the DCI including existing indication information and new indication information, and the bit positions in the DCI used to carry the new indication information (i.e., the information indication domain newly added in the DCI) being determined in at least one of the following ways: remaining bit positions determined according to a total payload number of the DCI and a payload number of an existing information indication domain, the total payload number being indicated by second indication information, the existing information indication domain being used to carry the existing indication information, and the total payload number being greater than the payload number of the existing information indication domain; all bit positions after a specified indication domain in the DCI, the specified indication domain being an indication domain in the existing information indication domain configured to a specific value; and reserved bit positions in the DCI. In this way, the new indication information can be directly transmitted by using the remaining bit positions in the existing DCI, without the need to use system information to indicate the new indication information, and the transmission time of the DCI is much less than that of the system information, so that the indication efficiency of the new indication information, i.e., the flexibility of the new indication information, is improved.

[0034] In a possible implementation of the third aspect, the DCI is DCI1_0 scrambled by an SI-RNTI, and the specified indication domain is a frequency domain indication domain in the DCI1_0 with all bits set to zero; and the bit positions in the DCI used to carry the new indication information include all bit positions after the frequency domain indication domain with all bits set to zero in the DCI1_0. In this way, all bit positions after the frequency domain resource indication domain can be used to carry new information element content, i.e., the existing information element indication domains in the DCI after the frequency domain resource indication domain can all carry new indication information, so that the bit position utilization rate of the DCI1_0 is improved. In addition, after the UE receives the DCI1_0 and analyzes that the content of the frequency domain resource indication domain is zero, the process of reading the system information is not triggered, so that the power consumption caused by reading the system information is reduced.

[0035] In a fourth aspect, the present application also provides a communication method applied to a terminal device, the method comprising: receiving first indication information and parsing the first indication information to obtain receiving position information of DCI; receiving DCI sent by a network device based on the receiving position information, the DCI comprising existing indication information and new indication information, and the bit positions in the DCI for carrying the new indication information being determined in at least one of the following ways: remaining bit positions determined according to a total payload number of the DCI and a payload number of an existing information indication field, the total payload number being indicated by second indication information, the existing information indication field being used to carry the existing indication information, and the total payload number being greater than the payload number of the existing information indication field; all bit positions after a specified indication field in the DCI, the specified indication field being an indication field in the existing information indication field configured to a specific value; reserved bit positions in the DCI; and wherein the new indication information in the DCI is parsed in a different way from the existing indication information.

[0036] In a possible implementation manner of the fourth aspect, the DCI is DCI1_0 scrambled with an SI-RNTI, and the specified indication field is a frequency domain indication field in the DCI1_0 all of which are set to zero; and the bit positions in the DCI for carrying the new indication information comprise all bit positions after the frequency domain indication field in the DCI1_0 all of which are set to zero.

[0037] In a fifth aspect, the present application also provides an electronic device, which comprises one or more processors, a memory and a touch screen; the memory is used to store program code; and the processor is used to run the program code, so that the electronic device implements the communication method in any of the possible implementation manners of the first aspect to the fourth aspect.

[0038] In a sixth aspect, the present application also provides a computer-readable storage medium having instructions stored thereon, the instructions, when executed on an electronic device, causing the electronic device to perform the communication method in any of the possible implementation manners of the first aspect to the fourth aspect.

[0039] In a seventh aspect, the present application also provides a chip system, which comprises at least one processor and an interface, the interface being used to receive code instructions and transmit the code instructions to the at least one processor; and the at least one processor runs the code instructions to implement the communication method in any of the possible implementation manners of the first aspect to the fourth aspect.

[0040] In an eighth aspect, the present application also provides a computer program product having instructions stored thereon, the instructions, when executed on an electronic device, causing the electronic device to implement the communication method in any of the possible implementation manners of the first aspect to the fourth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0041] FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application;

[0042] Figure 2 is a flowchart of a communication method provided in an embodiment of this application;

[0043] Figure 3a is a schematic diagram showing that the search spaces of the first DCI and the existing DCI provided in the embodiments of this application do not overlap;

[0044] Figure 3b is a schematic diagram showing that the first DCI and DCI1_0 provided in the embodiment of this application do not overlap in the time domain;

[0045] Figure 4 is a schematic diagram showing that the PEI-O time domains of the first DCI provided in the embodiment of this application and the existing DCI do not overlap;

[0046] Figure 5 is a schematic diagram of transmitting different types of indication information in the same DCI according to an embodiment of this application;

[0047] Figure 6 is a schematic diagram showing that the first DCI provided in the embodiment of this application and the existing DCI do not overlap in the frequency domain;

[0048] Figure 7 is a schematic diagram showing that the first DCI provided in the embodiment of this application and the existing DCI do not overlap in the time domain and frequency domain;

[0049] Figure 8 is a schematic diagram of using the remaining bits of DCI to carry indication information according to an embodiment of this application;

[0050] Figure 9 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0051] Figure 10 is a schematic diagram of another communication device provided in an embodiment of this application;

[0052] Figure 11 is a schematic diagram of the chip structure provided in an embodiment of this application. Detailed Implementation

[0053] The terms "first," "second," and "third," etc., used in this application specification, claims, and drawings are used to distinguish different objects, not to limit a specific order.

[0054] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0055] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a 3GPP communication system, a fourth generation (4G) mobile communication technology such as a long term evolution (LTE) system, a fifth generation (5G) mobile communication system, a new radio (NR) communication system (a wireless network of the 5G system), a new radio vehicle to everything (NR V2X) system, and can also be applied to a system in which LTE and 5G are hybrid networked, or a non-terrestrial network (NTN) system, a device-to-device (D2D) communication system, a machine to machine (M2M) communication system, an internet of things (IoT), and other next-generation communication systems, for example, a sixth generation (6G) communication system, a communication system evolved after 5G, and can also be a non-3GPP communication system, and the present application does not limit this.

[0056] FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application. The communication system can include a core network, a network device 101, and terminal devices 102-107. The network device 101 can communicate with at least one terminal device through uplink (UL) and downlink (DL).

[0057] The network device 101 can be an access network device, which can be a device used by an access network side to support terminal access to a communication system, or can be a chip of the device. The access network device can manage radio resources, provide access services for user equipment, and then complete the forwarding of control signals and user equipment data between user equipment and a core network. The access network device can be a radio access network (RAN) device. Different devices correspond to different systems, for example, the access network device can be an evolved Node B (eNB) in a 4G system, a base transceiver station (BTS), a home base station (for example, a home evolved Node B or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission and reception point (TRP or TP), and the like. Or it can be a gNB or a transmission point (TRP or TP) in a 5G system, or an antenna panel or a network node constituting a gNB or a transmission point in a base station in a 5G system, for example, a BBU or a distributed unit (DU), or it can also be a node or unit with corresponding functions in a future 6G system, which is not limited here.

[0058] A terminal device, also referred to as a user equipment (UE), a mobile station, a mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to a user. A terminal device can communicate with a core network via a radio access network (RAN) and exchange voice and / or data with the RAN. For example, a terminal device can be a handheld device having wireless connection capability, a vehicle-mounted device, a vehicle user equipment, etc. Currently, some examples of terminal devices are: a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, etc. With the development of wireless communication technology, devices that can access a wireless communication network, can communicate with a wireless network side, or can communicate with other objects through a wireless network can all be terminals in the embodiments of the present application. For example, terminals and cars in smart transportation, home devices in smart home, power metering instruments, voltage monitoring instruments, environmental monitoring instruments in a smart power grid, video monitoring instruments in a smart security network, wireless terminals in industrial control, wireless terminals in remote medical surgery, cash registers, etc. A terminal can be static and fixed, or mobile, and the type of terminal is not limited in the present application. In addition, a terminal can also be a terminal device in an Internet of things (IoT) system.

[0059] The terminal device in the embodiments of the present application can also be a vehicle-mounted module, a vehicle-mounted module group, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built in a vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module group, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0060] It should be understood that there can also be multiple network devices in the communication system, each of which can serve multiple terminal devices, and the number of network devices and terminal devices in the communication system is not limited in the embodiments of the present application. Each of the network device in FIG. 1 and part or all of the terminal devices can implement the technical solutions provided in the embodiments of the present application.

[0061] Referring to FIG. 2, a flowchart of a communication method provided in the embodiments of the present application is shown, which can include the following steps:

[0062] S101, the network device sends first information to the terminal device, the first information being used to indicate receiving position information of the DCI (or referred to as new DCI) received by the first terminal device.

[0063] The network device can be the aforementioned access network device. The first information can be a high-level instruction message such as SIB1, RRC signaling, etc. The network device informs the first terminal device of the receiving position information of the new DCI, i.e. the time domain and frequency domain information of the new DCI, through the first information. The time domain information and the frequency domain information can be indicated by the same information or can be indicated by different information, which is not limited in the present application.

[0064] In the embodiments of the present application, the receiving position information of the new DCI is different from that of the existing DCI, i.e. the time domain position and / or the frequency domain position of the new DCI is different from that of the existing DCI. Moreover, the format of the new DCI is the same as that of the existing DCI, but the indication information carried by the two is different. That is, the same format but different content DCI is distinguished by different time domain and / or frequency domain positions. The new DCI is used to indicate information of a new function, which is different from the indication information of the existing DCI. The information carried by the physical downlink control channel (PDCCH) is referred to as DCI. The DCI is various information used by the base station to schedule the UE, such as the resource block occupied in the frequency domain, the modulation mode, etc. The existing DCI is the DCI used in the current communication process, such as DCI1_0, DCI2_7, DCI2_9, etc. The format of the DCI can be distinguished according to the radio network temporary identifier (RNTI) type scrambled by the cyclic redundancy check (CRC) in the DCI. In other words, the scrambling RNTI type of the new DCI is the same as that of the existing DCI. Preferably, the size of the new DCI is the same as that of the existing DCI. Of course, the sizes of the two can also be different.

[0065] S102, the first terminal device receives the first information and parses the first information to obtain the receiving position information of the new DCI.

[0066] S103, the network device sends the new DCI to the first terminal device.

[0067] In an exemplary embodiment, the new DCI is used to indicate information of at least one new function. In other words, the new DCI can indicate information of one new function, or can simultaneously indicate information of at least two new functions. The type of information indicated by the DCI is not limited in the present application.

[0068] In an example, the new DCI can be used to indicate information of dynamic adjustment of common channel resources, wherein the common channel resource type can include at least one of the following: PRACH resource, synchronization signal block (SSB) resource, and resource of paging occasion. The present application does not limit the common channel resource type.

[0069] In S104, the first terminal device receives the new DCI based on the time-frequency location information of the new DCI, and obtains the new indication information by parsing the new DCI.

[0070] The first terminal device receives the new DCI sent by the network device based on the time-frequency location information of the new DCI, and obtains the new indication information according to the parsing manner. The parsing manner of the new DCI is different from that of the existing DCI.

[0071] The communication method provided in the embodiment uses DCI to indicate related information of new functions to the terminal device, such as information of dynamic adjustment of common channel resources. Compared with the way of indicating information through system messages, DCI is a lightweight message and can realize real-time control and management, so that the use of DCI to indicate information can shorten the information indication period and improve the flexibility of information indication. Moreover, the scheme multiplexes the existing DCI format to carry the indication information, and transmits the indication information to the terminal device through time-frequency resources different from the existing DCI, so that the new DCI is decoupled from the function of the existing DCI, and the use efficiency of the DCI is improved.

[0072] The following takes the new DCI indicating information of dynamic adjustment of common channel resources as an example for description:

[0073] I. Transmission of new DCI carrying new indication information based on time-domain offset different from the existing DCI

[0074] The embodiments of the present application can multiplex the existing DCI_0, DCI2_7, DCI2_9, and other DCI formats to deliver new indication information to the terminal device, that is, the scrambling type of the new DCI is the same as that of the existing DCI. In addition, the size of the new DCI can be the same as that of the existing DCI.

[0075] In order to avoid the conflict between the new DCI and the existing DCI, the frequency domain resource corresponding to the new DCI can be configured by high layer signaling to be the same as that of the existing DCI (such as the CORESET of the new DCI being the same as that of the existing DCI), while the time domain offset of the new DCI is different from that of the existing DCI, that is, different DCI contents are distinguished by different time domains on the same frequency domain.

[0076] For example, as shown in FIG. 3a, the search space (SS) of the existing DCI is different from the SS of the new DCI, and the SS determines the time domain offset of the DCI, so the different SS can ensure that the time slot positions of the new DCI and the existing DCI are different. For example, at least one of the frame offset, the subframe offset, the slot offset, and the OFDM symbol position of the SS of the new DCI can be configured to be different from the existing DCI, which can ensure that the time domain positions of the new DCI and the existing DCI are different.

[0077] In the formula, CORESET (control-resource set) is a set of physical resource sets, that is, a specific area on the downlink resource grid, used to carry the parameters of PDCCH or DCI. SearchSpace represents the time domain characteristics of receiving DCI, such as the time domain period and offset, the number of time slots continuously monitored in each period, and the specific starting of monitoring in each time slot, that is, the time domain position of CORESET is indicated. SearchSpace and CORESET combine to form a determined time-frequency domain resource for receiving DCI.

[0078] (1) Multiplexing DCI1_0 format transmission of new DCI carrying new indication information

[0079] DCI1_0 is mainly responsible for the scheduling of the physical downlink shared channel (PDSCH) in the terminal access, such as the scheduling of SIB1, other SIBs (such as SIB2-SIBn), Msg2, Msg4, and other messages. The specific service type is distinguished according to the RNTI type scrambled by CRC. RNTI is an identifier assigned by the wireless side of 5G NR to the UE, which is used as an identifier of different UEs in the signal information between the UE and the gNB.

[0080] DCI1_0 scrambled by SI-RNTI is used for scheduling of SIB1 and other SIBs. In this embodiment, the format of the new DCI is the same as that of DCI1_0, that is, it is still scrambled by SI-RNTI. Alternatively, the new DCI has the same number of bits as the existing DCI1_0.

[0081] The frequency domain position of the new DCI is the same as that of DCI1_0, such as CORESET0, and the time domain offset is different, that is, the time slot position of the new DCI and the time slot position of DCI1_0 do not overlap. As shown in FIG. 3b, the time slot position of the new DCI does not overlap with the time slot position of DCI1_0 in the time slot of the current SIB1, that is, the time slot position of the new DCI does not overlap with the time slot position of DCI1_0 in the current time slot.

[0082] In an example embodiment, a next slot position of all slot candidate positions of the PDCCH receiving the SIB calculated according to the last SSB index can be used as the slot position of the new DCI, so as to ensure that the slot position of the new DCI does not overlap with the slot position of all possible transmissions of DCI1_0.

[0083] The bit number of the new DCI can be the same as that of the DCI1_0 described above, but the meanings of the fields of the two are different, for example, the meanings of all fields of the new DCI and the DCI1_0 are different, or the meanings of part of the fields of the two are different, which is not limited in the present application.

[0084] (2) Multiplexing DCI2_7 to transmit the new DCI carrying new indication information

[0085] Currently, the DCI format DCI2_7 is used to notify the paging early indication (PEI) of one or more UEs and the tracking reference signal (TRS) availability indication, which is scrambled by PEI-RNTI.

[0086] The role of the PEI is to use the PEI as an indication of whether to monitor the PDCCH scheduling the paging message in the RRC idle state, and the UE monitors the PEI before monitoring the paging message, thereby reducing the UE's invalid paging message monitoring and further reducing the UE's power consumption. The role of the TRS is to track the time / frequency deviation by measuring the TRS configured for it when the UE receives the downlink data transmission.

[0087] The monitoring occasion (MO) of the PEI occasion (PEI-O) transmitted by the DCI2_7 can be determined by the parameters "PEI-FrameOffset" and "firstPDCCH-MonitoringOccasionOfPEI-O" in the SIB1. The parameter "PEI-FrameOffset" represents the offset relative to the starting position of the first paging frame (PF) of the paging occasion (PO), which is a frame-level offset, also referred to as a frame-level offset in the present application. The parameter "firstPDCCH-MonitoringOccasionOfPEI-O" represents the symbol-level offset from the reference point to the start of the first PDCCH detection opportunity of the PEI-O, which can be referred to as an orthogonal frequency division multiplexing (OFDM) symbol-level offset.

[0088] In the embodiments of the present application, the new DCI is multiplexed with the existing DCI 2_7 format, that is, the new DCI is still scrambled by PEI-RNTI. Optionally, the new DCI has the same number of bits as the existing DCI 2_7. However, the content of the new DCI is different from that of the existing DCI 2_7.

[0089] In order to avoid the new DCI and the existing DCI 2_7 from conflicting with each other, the frequency domain position of the new DCI can be configured to be the same as that of the existing DCI 2_7, such as CORESET0, but the time domain position of the new DCI and the existing DCI 2_7 do not overlap with each other. For example, as shown in FIG. 4, the time domain position of the new DCI and the time domain position of PEI-O in the existing DCI 2_7 do not overlap with each other.

[0090] In an exemplary embodiment, the parameter "PEI-FrameOffset" of the time domain position of the new DCI and the parameter "PEI-FrameOffset" corresponding to the existing DCI 2_7 can be configured in high layer signaling (such as SIB1, RRC, etc.) to be different from each other, that is, the frame level offset of the new DCI and the DCI 2_7 is different.

[0091] Further, the offset parameters "firstPDCCH-MonitoringOccasionOfPEI-O" corresponding to the new DCI and the existing DCI 2_7 can also be configured in high layer signaling (SIB1) to be different from each other, that is, the symbol position corresponding to the new DCI in SIB1 is different from the OFDM symbol position corresponding to the existing DCI 2_7, that is, the symbol level offset of the new DCI and the DCI 2_7 is different.

[0092] In addition, the subframe frequency shift and / or time slot offset of the new DCI and the DCI 2_7 can also be configured to be different from each other through high layer signaling.

[0093] (3) Multiplexing DCI 2_9 to transmit new DCI carrying new indication information

[0094] 5G NR Release 18 (R18) introduces cell discontinuous transmission and reception (Cell DTX / DRX) technology, which can save functions by periodically turning off data transmission and reception. The network will inform the UE of the cell closing period, and when the cell closes transmission and reception, the UE will also stop transmission and reception.

[0095] DCI 2_9 is used to activate or deactivate the Cell DTX / DRX (Discontinuous Reception) configuration of one or more serving cells of the UE, and / or to provide the NES mode prompt of the primary cell for the UE.

[0096] The new DCI of the embodiment multiplexes the existing DCI 2_9 format, wherein the DCI 2_9 is scrambled by Cell DTX-RNTI, and the new DCI is also scrambled by Cell DTX-RNTI. The bit number of the new DCI can be the same as or different from the bit number of the existing DCI 2_9, but the content of the new DCI is different from the DCI 2_9.

[0097] To avoid the conflict between the new DCI with different content and the existing DCI 2_9, the time domain position of the new DCI can be configured by high layer signaling (such as SIB1, RRC signaling, etc.) to be different from the time domain position of the DCI 2_9.

[0098] In an exemplary embodiment, at least one of the frame level offset, the subframe offset, the slot offset and the OFDM symbol position of the SearchSpace of the new DCI and the DCI 2_9 can be configured by high layer signaling (such as SIB1, RRC signaling, etc.) to be different values. Such a configuration method is also applicable to other DCI formats, such as DCI 1_0 and DCI 2_7, etc.

[0099] In another exemplary embodiment, the UE can monitor the DCI 2_9 in the ON time of the Cell DTX / DRX (i.e. the activation period of the Cell DTX / DRX) and monitor the new DCI in the OFF time of the Cell DTX / DRX (i.e. the deactivation period of the Cell DTX / DRX).

[0100] In another possible implementation, the same DCI can simultaneously include indication information of multiple different function types, for example, the same DCI can simultaneously include indication information of dynamic adjustment of PRACH resource, SSB resource and paging resource, and the DCI carries different indication information through different information blocks (which can be referred to as information indication domain), as shown in FIG. 5, information block 1 in the DCI is used to transmit dynamic indication information of the configured additional PRACH resource, information block 2 is used to transmit dynamic indication information of the SSB resource, and information block 3 is used to transmit dynamic indication information of the paging resource.

[0101] The communication method provided by the embodiment multiplexes the existing DCI format to transmit different content from the existing DCI, and transmits the DCI with different content through different time domain resources respectively. In this way, the new information does not need to be indicated by system information, and the transmission time of the DCI is much shorter than that of the system information, so that the indication efficiency of the information is improved, that is, the flexibility of the new indication information is improved. Further, the DCI with different content is transmitted on different time domain resources, which can realize the functional decoupling of the new DCI and the existing DCI, and improve the use efficiency of the DCI.

[0102] II. New DCI carrying new indication information based on different frequency domain resource transmission from existing DCI

[0103] In this embodiment, the network device configures the frequency domain position of the new DCI to be different from that of the existing DCI according to the time domain and frequency domain information of the existing DCI (such as DCI_0, DCI2_7, DCI2_9, etc.) in the protocol, where the frequency domain resource of the new DCI can be mutually exclusive or partially overlapped with the frequency domain resource of the existing DCI, for example, the starting position and / or ending position of the frequency domain resource of the new DCI is different from that of the existing DCI. In this embodiment, the time domain position of the new DCI can be the same as that of the existing DCI, that is, different contents of DCI are transmitted through different frequency domain resources in the same time slot.

[0104] (1) Multiplexing DCI1_0 to transmit new DCI carrying new indication information

[0105] In the embodiments of the present application, the new DCI can multiplex the DCI1_0 format to transmit new content, that is, the new DCI is scrambled by SI-RNTI, but the content of the new DCI is different from that of the existing DCI1_0. The number of bits of the new DCI and the DCI1_0 can be the same or different, which is not limited in the present application.

[0106] In this embodiment, in order to avoid the conflict between the new DCI and the DCI1_0, the frequency domain resource of the UE receiving the new DCI can be configured by high layer signaling (such as RRC signaling, SIB1, etc.) to be different from the frequency domain resource corresponding to the existing DCI1_0.

[0107] In an exemplary embodiment, the CORESET of the new DCI can be configured by high layer signaling to be different from the CORESET of the DCI1_0. For example, as shown in FIG. 6, the frequency domain resource of the existing DCI1_0 is configured as CORESET0, and the frequency domain resource of the new DCI is configured as CORESET1 (or CORESET2). In addition, the time domain resource of the new DCI can be the same as that of the existing DCI1_0. In this way, different UEs can receive different contents of DCI through different CORESETs in the same time domain.

[0108] For example, in the scenario where the new DCI is used to transmit the time domain adjustment information of the additional PRACH resource configured for the UE supporting the NES function, the UE supporting the NES function can receive the new DCI at the specified time slot position of the CORESET1, and other UEs can receive the existing DCI1_0 at the specified time slot position of the CORESET0.

[0109] In another exemplary embodiment of the present application, the new DCI can also multiplex the DCI 2_7 to transmit new indication information, that is, the new DCI is scrambled by PEI-RNTI, and the content of the new DCI is different from that of the existing DCI 2_7.

[0110] Further, the frequency domain resource for transmitting the new DCI can be configured by high layer signaling to be different from the frequency domain resource for transmitting the existing DCI 2_7. For example, the frequency domain resource of the existing DCI 2_7 is configured as CORESET0, and the frequency domain resource of the new DCI can be configured as CORESET1 or CORESET2. In addition, the time domain resources of the new DCI and the DCI 2_7 can be the same.

[0111] In another exemplary embodiment of the present application, the new DCI can also multiplex the DCI 2_9 to transmit new indication information, that is, the new DCI is still scrambled by CellDTRX-RNTI, and the content of the new DCI is different from that of the existing DCI 2_9.

[0112] Further, the frequency domain resource for transmitting the new DCI can be configured by high layer signaling to be different from the frequency domain resource for transmitting the existing DCI 2_9. For example, the frequency domain resource of the existing DCI 2_9 is configured as CORESET0, and the frequency domain resource of the new DCI can be configured as CORESET1 or CORESET2. In addition, the time domain resources of the new DCI and the DCI 2_9 can be the same.

[0113] In another exemplary embodiment of the present application, a specific CORESET associated with the new DCI can be introduced, and the specific CORESET does not overlap with the CORESET of the existing DCI, wherein the time domain positions of the new DCI and the existing DCI can be the same. That is, the new DCI containing resource dynamic adjustment indication is transmitted through a specific CORESET, and the frequency domain resources of the new DCI and the existing DCI do not overlap, but the time domain resources of the new DCI and the existing DCI can be the same, so as to ensure that the frequency domain resources of the new DCI and the frequency domain resources of the existing DCI do not overlap.

[0114] The above embodiments multiplex the existing DCI format to transmit new indication information, and transmit DCIs with different contents through different frequency domain resources. In this way, there is no need to use system information to indicate new information, and the transmission time of the DCI is much shorter than that of the system information, thus improving the indication efficiency, that is, improving the flexibility of information indication. Further, transmitting the new DCI and the existing DCI on different frequency domain resources can realize decoupling of the new DCI and the existing DCI function, and improve the DCI use efficiency.

[0115] Three, transmitting a new DCI carrying resource dynamic adjustment information based on different time domain and frequency domain resources than the existing DCI

[0116] In the embodiments of the present application, the time domain resources and frequency domain resources of the new DCI and the existing DCI can be configured by high layer signaling to be different, and the specific implementation of configuring the time domain resources and frequency domain resources to be different can be referred to the foregoing related content.

[0117] For example, as shown in FIG. 7, the time-frequency resources of the existing DCI can be configured by high layer signaling to be CORESET0 on slot 1, and the time-frequency resources configured for the new DCI can be CORESET1 (or CORESET2) on slot 2.

[0118] For example, in the case of multiplexing DCI1_0 format to transmit new indication information, the slot position of the new DCI and the slot position of the existing DCI1_0 are different from each other, and the CORESET of the new DCI and the CORESET of the existing DCI1_0 are different from each other.

[0119] For another example, in the case of multiplexing DCI2_7 format to transmit new indication information, the frame level offset and / or OFDM symbol level offset corresponding to the new DCI configured by high layer signaling are different from those of the existing DCI2_7, and the CORESET configured for the new DCI is different from the CORESET configured for the existing DCI2_7.

[0120] For another example, in the case of multiplexing DCI2_9 format to transmit new indication information, the SearchSpace of the new DCI is different from that of the existing DCI2_9, and the CORESET of the new DCI is different from that of the existing DCI2_9.

[0121] Four, transmitting new indication information based on the remaining bits of the existing DCI

[0122] In the embodiments, new information elements can be added after the existing information elements of the existing DCI to indicate new indication information. The indication field for carrying the new information elements can include the following three cases:

[0123] ① The existing DCI includes reserve bits, and the new information elements are directly carried by the reserve bits.

[0124] ② The existing DCI does not have reserve bits or the number of reserve bits is insufficient to carry the new information elements. The total number of bits of the DCI can be indicated by high layer signaling to be greater than the bits of the existing indication field of the DCI, so as to generate remaining bits, and the content of the new information elements is carried by the remaining bits.

[0125] ③ A certain indication field in the existing DCI can be configured to a specific value, so that the other existing indication fields after the indication field are used to carry the content of the new information elements.

[0126] The above three modes can be used alone or in combination, for example, ① and ③, ① and ②, ② and ③ are used at the same time, or ①, ② and ③ are used at the same time, and the present application does not limit this.

[0127] (1) Using the remaining bit positions in DCI2_7 or DCI2_9 to transmit new indication information

[0128] The network side can indicate the total payload N of DCI2_7 or DCI2_9 through high-level signaling (such as SIB1, RRC, etc.), and N is greater than the size N1 of the existing DCI element, and the new element content is added in the (N-N1) bit positions remaining in the DCI. In other words, by expanding the total number of bits of the existing DCI, the remaining bit positions of the existing DCI are generated to carry new indication information. In this case, the DCI contains both the element content of the existing function and the newly added element content.

[0129] For example, taking DCI2_7 as an example, the DCI of this format includes both the indication information of PEI and the indication information of dynamic adjustment of additional PRACH resources configured for NES-enabled UEs. In this case, the NES-enabled UE can parse the content of the newly added element indication field after receiving DCI2_7, that is, the content of the last (N-N1) bit positions obtains the dynamic adjustment information of the PRACH resource. Other UEs can parse the content of the first N1 bit positions to obtain the related information of PEI after receiving DCI2_7.

[0130] In an exemplary embodiment, the network side can also indicate the number N2 of bit positions of the newly added element indication field through high-level signaling, so that the UE directly parses the information in the last N2 bit positions of the DCI.

[0131] In another possible implementation, the network side can only configure part of the existing element content of the DCI (DCI2_7 or DCI2_9), and add new element content in the bit positions not configured or not used by the DCI, and still use the original scrambling ID for scrambling, such as DCI2_7 still uses PEI-RNTI scrambling, DCI2_9 still uses CellDTRX-RNTI scrambling, and the total number of bit positions of the DCI remains unchanged. In this scenario, the existing element content of the DCI can not be parsed by the UE, in other words, the existing element content in the DCI is invalid information for the UE, but the new element content can be parsed by the UE.

[0132] (2) Using the reserved bit in DCI1_0 to transmit new indication information

[0133] The newly added information element in the reserve bits of the existing DCI1_0 is used to indicate the related information of the newly added function, that is, the new indication information is directly carried in the reserve bits of the existing DCI, that is, the case 1 above.

[0134] The DCI1_0 includes both the existing information element content and the newly added information element content. Different UEs can obtain the content required by themselves after receiving and analyzing the DCI.

[0135] For example, the reserve bits in the DCI1_0 transmit the indication information of the dynamic adjustment of the additional PRACH resource configured for the UE supporting the NES function, and the existing information element indication field of the DCI1_0 is used to indicate the scheduling information of the system information. In this scenario, the UE supporting the NES function obtains the dynamic adjustment information of the pre-configured additional PRACH resource by analyzing the content in the reserve bits after receiving the DCI1_0. Other UEs obtain the scheduling information of the system message by analyzing the content in the existing information element indication field after receiving the DCI1_0.

[0136] In another possible implementation, the frequency domain resource indication field in the DCI1_0 can be set to zero, that is, the frequency domain resource indication field does not indicate the frequency domain resource. In this way, all the bit positions after the frequency domain resource indication field can be used to carry the new information element content, that is, the existing information element indication field after the frequency domain resource indication field in the DCI can carry the new indication information, thereby improving the bit position utilization rate of the DCI1_0. That is, the case 3 above.

[0137] In addition, when the UE receives the DCI1_0 and analyzes that the content of the frequency domain resource indication field is zero, the process of reading the system message is not triggered, thereby reducing the power consumption generated by reading the system message.

[0138] In addition, in all the above embodiments, before the network side transmits the related information of the new function through the DCI, the network side can first indicate the enablement of the new function to the UE through the high-level signaling, which is equivalent to informing the UE that the DCI to be issued soon contains the related information of the new function.

[0139] The communication method provided in the embodiment directly transmits the new indication information by using the remaining bit positions in the existing DCI, without using the system message to indicate the new indication information. The transmission time of the DCI is much less than that of the system information, and therefore the indication efficiency of the new indication information is improved, that is, the flexibility of the new indication information is improved.

[0140] FIG. 9 is a structural schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus can be a terminal device, or a device in the terminal device, or a device capable of being used with the terminal device. Alternatively, the communication apparatus can be a network device, or a device in the network device, or a device capable of being used with the network device.

[0141] As shown in FIG. 9, the communication apparatus can include a transceiver 101 and a processor 102. Specifically, the processor 102 is configured to process data. The data can be received by the transceiver 101, and the processed data can also be transmitted by the transceiver 101.

[0142] The processor 102 is configured to perform the function of processing data of the terminal device or the network device in the communication indication method embodiments described above. For other possible implementation manners of the communication apparatus, refer to the related description of the function of the terminal device or the network device, which will not be described here.

[0143] FIG. 10 is a structural schematic diagram of another communication apparatus provided in an embodiment of the present application. The communication apparatus can be the terminal device or the network device in the method embodiments described above, and can also be a chip, a chip system, or a processor, etc. supporting the terminal device or the network device to implement the methods described above. The communication apparatus can be used to implement the methods described in the method embodiments described above, and the details can be referred to the description in the method embodiments described above.

[0144] As shown in FIG. 10, the communication apparatus can include one or more processors 201. The processor 201 can be a general-purpose processor or a special-purpose processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication apparatus (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute software programs, and process data of the software programs.

[0145] Optionally, the communication apparatus can include one or more memories 202, which can store instructions 204 that can be run on the processor 201 to make the communication apparatus perform the methods described in the method embodiments described above. Optionally, the memory 1202 can also store data. The processor 201 and the memory 202 can be separately arranged, or can be integrated together.

[0146] Optionally, the communication apparatus can further include a transceiver 205, an antenna 206. The transceiver 205 can be referred to as a transceiving module, a transceiver, or a transceiving circuit, etc., and is configured to implement a transceiving function. The transceiver 205 can include a receiver and a transmitter. The receiver can be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function. The transmitter can be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function. The processing module 102 shown in FIG. 9 can be a processor 201. The transceiving module 101 can be a transceiver 205.

[0147] In another possible design, the processor 201 can include a transceiver configured to implement the receiving and transmitting functions. For example, the transceiver can be a transceiving circuit, or an interface, or an interface circuit. The transceiving circuit, the interface, or the interface circuit configured to implement the receiving and transmitting functions can be separate or integrated together. The transceiving circuit, the interface, or the interface circuit can be configured to read and write codes / data, or the transceiving circuit, the interface, or the interface circuit can be configured to transmit or transfer signals.

[0148] In yet another possible design, the processor 201 can store instructions 203. The instructions 203, when executed on the processor 201, can cause the communication apparatus to perform the methods described in the above method embodiments. The instructions 203 can be fixed in the processor 201. In this case, the processor 201 can be implemented by hardware.

[0149] The communication apparatus described in the above embodiments can be a terminal device or a network device, but the scope of the communication apparatus described in the embodiments of the present application is not limited to this, and the structure of the communication apparatus can not be limited to that shown in FIG. 10. The communication apparatus can be a standalone device or a part of a larger device.

[0150] For the case that the communication apparatus is a chip or a chip system, refer to the structure diagram of the chip shown in FIG. 11. The chip shown in FIG. 11 includes a processor 301, an interface 302. Optionally, it can further include a memory 303. The number of the processor 301 can be one or more, and the number of the interface 302 can be multiple.

[0151] For the case that the chip is used to implement the terminal device or the network device in the embodiments of the present application:

[0152] The interface 302 is configured to receive or output signals.

[0153] The processor 301 is configured to perform data processing operations of the terminal device or the network device.

[0154] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with a signal processing capability. In the implementation process, the steps of the above method embodiments can be completed by an integrated logic circuit or an instruction in the form of software in the processor. The processor mentioned above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0155] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0156] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios, solve corresponding technical problems, and achieve corresponding effects without relying on other features, such as the scheme currently based on, or can be combined with other features according to needs in some scenarios. Correspondingly, the communication apparatus given in the embodiments of the present application can also implement these features or functions accordingly, which will not be described here.

[0157] The present application also provides a computer readable medium, which stores a computer program or instructions, and when the computer program or instructions are executed by a communication apparatus, the functions of any of the above method embodiments are realized.

[0158] The present application also provides a computer program product including instructions, which, when read and executed by a computer, cause the computer to realize the functions of any of the above method embodiments.

[0159] The present application provides a communication system, which includes a terminal device and a network device; wherein the terminal device is configured to execute the method executed by the terminal device in the above embodiments, and the network device is configured to execute the method executed by the network device in the above embodiments.

[0160] The integrated unit, if realized in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the embodiments can be embodied in the form of a software product in essence or in the form of a software product that contributes to the prior art or the whole or part of the technical solutions. The computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor execute all or part of the steps of the method described in various embodiments. The aforementioned storage medium includes: a flash memory, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various media that can store program codes.

[0161] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method is applied to a network device, and comprises: sending a first DCI, the first DCI being used for indicating first information to a terminal device; sending a second DCI, the second DCI being used for indicating second information to the terminal device, the second information being different from the first information, a format of the second DCI being same as a format of the first DCI, and second receiving position information of the second DCI being different from first receiving position information of the first DCI.

2. The method of claim 1, wherein, The second receiving position information of the second DCI is different from the first receiving position information of the first DCI, comprising: a time domain position of the second DCI is different from a time domain position of the first DCI.

3. The method of claim 2, wherein, The time domain position of the second DCI is different from the time domain position of the first DCI, comprising: at least one of a frame offset, a subframe offset, a slot offset and an OFDM symbol position of a search space of the second DCI is different from a search space of the first DCI.

4. The method according to any one of claims 1 to 3, characterized in that, The first DCI comprises DCI1_0, DCI2_7 and DCI2_9.

5. The method according to any one of claims 2-4, characterized in that, The first DCI is DCI1_0 scrambled by SI-RNTI; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: The time domain position of the second DCI is different from the time domain position of the first DCI in a slot position of a current SIB1.

6. The method according to any one of claims 2-4, characterized in that, The time domain position of the second DCI is different from the time domain position of the first DCI, comprising: The time domain position of the second DCI is a next slot position of all slot candidate positions of a PDCCH used for receiving scheduling SIB1, which is calculated according to a last synchronization information block index.

7. The method according to any one of claims 2-4, characterized in that, The first DCI is DCI2_7; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: a frame level offset corresponding to the second DCI is different from a frame level offset of the DCI2_7; and / or, a subframe offset of the second DCI is different from a subframe offset of the DCI2_7; and / or, a slot offset of the second DCI is different from a slot offset of the DCI2_7; and / or, a symbol level offset corresponding to the second DCI is different from a symbol level offset of the DCI2_7.

8. The method according to any one of claims 2-4, characterized in that, The first DCI is DCI2_9; and the time domain position of the second DCI is different from the time domain position of the first DCI, comprising: The time domain position of the first DCI is an active period of cell discontinuous transmission and discontinuous reception, and the time domain position of the second DCI is a non-active period of the cell discontinuous transmission and discontinuous reception.

9. The method according to any one of claims 1 to 8, characterized in that, The second receiving position information of the second DCI is different from the first receiving position information of the first DCI, comprising:

10. The method of claim 9, wherein, a frequency domain position of the second DCI is different from a frequency domain position of the first DCI. The frequency domain position of the second DCI is different from the frequency domain position of the first DCI, comprising:

11. The method according to any one of claims 1 to 10, characterized in that, a CORESET corresponding to the second DCI is different from a CORESET of the first DCI. Before the second DCI is sent, the method further comprises: The first indication information is used to indicate a format of the second DCI and the first receiving position information of the second DCI to the terminal device.

12. The method according to any one of claims 1 to 11, characterized in that, The second DCI is used to indicate information of dynamic adjustment of common channel resources.

13. The method of claim 12, wherein, The information indicated by the second DCI includes at least one of the following: information of dynamic adjustment of PRACH resources, information of dynamic adjustment of SSB resources, and information of dynamic adjustment of paging resources.

14. The method according to any one of claims 1 to 13, characterized in that, The second DCI is used to indicate at least two different information.

15. The method according to any one of claims 1 to 14, characterized in that, The format of the second DCI is the same as that of the first DCI, including: The scrambling identifier of the first DCI is the same as that of the first DCI, and the bit number of the second DCI is the same as that of the first DCI.

16. A method of communication, comprising: The method is applied to a terminal device, and the method comprises: receiving a first DCI based on first time-frequency position information and obtaining first information by parsing the first DCI based on a first parsing manner; receiving a second DCI based on second time-frequency position information and obtaining second information by parsing the second DCI based on a second parsing manner, wherein the second information is different from the first information, the second time-frequency position information is different from the first time-frequency position information, and the format of the second DCI is the same as that of the first DCI.

17. The method of claim 16, wherein, The second time-frequency position information is different from the first time-frequency position information, including: The time domain position of the second DCI is different from the time domain position of the first DCI.

18. The method of claim 17, wherein, The time domain position of the second DCI is different from the time domain position of the first DCI, including: At least one of the frame offset, the subframe offset, the slot offset, and the OFDM symbol position of the search space of the second DCI is different from that of the first DCI.

19. The method according to any one of claims 16-18, characterized by, The first DCI includes DCI1_0, DCI2_7, and DCI2_9.

20. The method according to any one of claims 17-19, characterized by, The first DCI is DCI1_0 scrambled by SI-RNTI; and the time domain position of the second DCI is different from the time domain position of the first DCI, including: The time domain position of the second DCI is different from the time domain position of the first DCI under the time domain position of the current SIB1.

21. The method of claim 20, wherein, The time domain position of the second DCI is different from the time domain position of the first DCI, including: The time domain position of the second DCI is the next slot position of all slot candidate positions of the PDCCH used to receive the SIB1 according to the last synchronization information block index.

22. The method according to any one of claims 17-19, characterized by, The first DCI is DCI2_7; and the time domain position of the second DCI is different from the time domain position of the first DCI, including: The frame level offset corresponding to the second DCI is different from that of the DCI2_7; and / or, the subframe offset of the second DCI is different from that of the DCI2_7; and / or, the slot offset of the second DCI is different from that of the DCI2_7; and / or, the symbol level offset corresponding to the second DCI is different from that of the DCI2_7.

23. The method of any one of claims 17-19, wherein, The first DCI is DCI 2 9; and the time domain position of the second DCI is different from the time domain position of the first DCI, including: The time domain position of the first DCI is an activation period of a cell discontinuous transmission and discontinuous reception function, and the time domain position of the second DCI is a deactivation period of the cell discontinuous transmission and discontinuous reception function.

24. The method of any one of claims 16-23, wherein, The frequency domain position of the second DCI is different from the frequency domain position of the first DCI.

25. The method of claim 24, wherein, The frequency domain position of the second DCI is different from the frequency domain position of the first DCI, including: The CORESET corresponding to the second DCI is different from the CORESET of the first DCI.

26. The method of any one of claims 16-25, wherein, The information indicated by the second DCI includes at least one of the following: information of dynamic adjustment of PRACH resources, information of dynamic adjustment of SSB resources, and information of dynamic adjustment of paging resources.

27. The method of any one of claims 16-26, wherein, The second DCI is used to indicate at least two different information.

28. A method of communication, comprising: The method applied to a network device, the method comprising: sending first indication information, the first indication information being used to indicate position information of DCI received by the first terminal device; sending DCI based on the position information, the DCI including existing indication information and new indication information, and bit positions in the DCI used to carry the new indication information being determined in at least one of the following ways: remaining bit positions determined according to a total payload number of the DCI and a payload number of an existing information indication field, the total payload number being indicated by second indication information, the existing information indication field being used to carry the existing indication information, and the total payload number being greater than the payload number of the existing information indication field; all bit positions after a specified indication field in the DCI, the specified indication field being an indication field in the existing information indication field configured as a specific value; reserved bit positions of the DCI.

29. The method of claim 28, wherein, The DCI is DCI 1 0 scrambled by SI-RNTI, the specified indication field is a frequency domain indication field in the DCI 1 0 all set to zero, and the bit positions in the DCI used to carry the new indication information include all bit positions after the frequency domain indication field in the DCI 1 0 all set to zero.

30. A method of communication, comprising: The method applied to a terminal device, the method comprising: receiving first indication information and parsing the first indication information to obtain receiving position information of DCI; receiving the DCI sent by the network device based on the receiving position information, the DCI including existing indication information and new indication information, and bit positions in the DCI used to carry the new indication information being determined in at least one of the following ways: remaining bit positions determined according to a total payload number of the DCI and a payload number of an existing information indication field, the total payload number being indicated by second indication information, the existing information indication field being used to carry the existing indication information, and the total payload number being greater than the payload number of the existing information indication field; all bit positions after a specified indication field in the DCI, the specified indication field being an indication field in the existing information indication field configured as a specific value; A reserved bit in the DCI; The new indication information in the DCI is different from the existing indication information in terms of parsing manner.

31. The method of claim 30, wherein, The DCI is a DCI1_0 scrambled by an SI-RNTI, and the specified indication field is a frequency domain indication field with all bits set to zero in the DCI1_0; the bit in the DCI for carrying the new indication information includes all bits after the frequency domain indication field with all bits set to zero in the DCI1_0.

32. An electronic device, comprising: The electronic device includes one or more processors, memories, and touch screens; the memories are configured to store program codes; and the processors are configured to run the program codes, so that the electronic device implements the communication method according to any one of claims 1 to 31.

33. A computer-readable storage medium, comprising: An electronic device having instructions stored thereon that, when executed on the electronic device, cause the electronic device to perform the communication method according to any one of claims 1 to 31.

34. A chip system, characterized by The electronic device includes: at least one processor and an interface configured to receive code instructions and transmit the code instructions to the at least one processor; The at least one processor runs the code instructions to implement the communication method according to any one of claims 1 to 31.

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