Wireless communication method, wireless communication device, computer readable medium

Abstract

The embodiment of the present application provides a wireless communication method, a wireless communication device and a computer readable medium, the method comprising: a base station sends uplink transmission configuration information to a terminal, the uplink transmission configuration information comprising configuration information of an uplink channel resource and / or configuration information of a downlink control channel search space, wherein information carried by a downlink control channel in the downlink control channel search space comprises downlink control information DCI. The terminal can detect the DCI sent by the base station, and downlink transmission is realized between the base station and the terminal. Therefore, through the indication of the uplink transmission configuration information, information transmission can be successfully realized whether the terminal is in an RRC connection state or an RRC space state, and naturally, when the terminal is in the RRC space state, state switching is not needed to complete data transmission, power consumption and resource consumption caused by state switching of the terminal are reduced, the optimization of terminal resources is facilitated, and the user experience on the terminal side is enhanced.

Description

[0001] This application is a divisional application of Chinese patent application No. 201910054154.1, filed on January 21, 2019, entitled “Information Transmission and Reception Method, Apparatus, Base Station, Terminal and Communication System”. Technical Field

[0002] This invention relates to the field of communications, and more particularly to an information transmission and reception method, apparatus, base station, terminal, and communication system. Background Technology

[0003] Currently, before sending or receiving data, terminals need to transition from the RRC-IDLE (Radio Resource Control IDLE) state to the RRC-CONNECT (Radio Resource Control CONNECT) state. However, this transition consumes power and system resources. Therefore, a new data transmission method is needed to address this issue. Summary of the Invention

[0004] The information sending and receiving method, apparatus, base station, terminal and communication system provided in the embodiments of the present invention mainly solve the technical problem of providing a new information transmission scheme that enables the terminal to support uplink data transmission in the RRC idle state.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide an information sending method, comprising:

[0006] Send uplink transmission configuration information to the terminal; the uplink transmission configuration information includes at least one of the following:

[0007] Uplink channel resource configuration information;

[0008] The configuration information of the downlink control channel search space includes the information carried by the downlink control channel in the downlink control channel search space, including downlink control information (DCI).

[0009] This invention also provides an information receiving method, including:

[0010] Receive uplink transmission configuration information sent by the base station; the uplink transmission configuration information includes at least one of the following:

[0011] Uplink channel resource configuration information;

[0012] Configuration information of the downlink control channel search space, including the information carried by the downlink control channel in the downlink control channel search space, such as DCI.

[0013] This invention also provides an information sending device, comprising:

[0014] The sending module is used to send uplink transmission configuration information to the terminal; the uplink transmission configuration information includes at least one of the following:

[0015] Uplink channel resource configuration information;

[0016] Configuration information of the downlink control channel search space, including the information carried by the downlink control channel in the downlink control channel search space, such as DCI.

[0017] This invention also provides an information receiving device, comprising:

[0018] The receiving module is used to receive uplink transmission configuration information sent by the base station; the uplink transmission configuration information includes at least one of the following:

[0019] Uplink channel resource configuration information;

[0020] Configuration information of the downlink control channel search space, including the information carried by the downlink control channel in the downlink control channel search space, such as DCI.

[0021] This invention also provides a base station, which includes a first processor, a first memory, and a first communication bus;

[0022] The first communication bus is used to realize the connection and communication between the first processor and the first memory;

[0023] The first processor is used to execute one or more programs stored in the memory to implement the steps of the above-described information sending method.

[0024] This invention also provides a terminal, which includes a second processor, a second memory, and a second communication bus;

[0025] The second communication bus is used to realize the connection and communication between the second processor and the second memory;

[0026] The second processor is used to execute one or more programs stored in the memory to implement the steps of the above-described information receiving method.

[0027] This invention also provides a communication system, characterized in that the communication system includes the aforementioned base station and at least one of the aforementioned terminals.

[0028] This invention also provides a readable storage medium storing an information sending program and / or an information receiving program. The information sending program can be executed by one or more processors to implement the steps of the information sending method described above; the information receiving program can be executed by one or more processors to implement the steps of the information receiving method described above.

[0029] The beneficial effects of this invention are:

[0030] According to the information transmission and reception method, apparatus, base station, terminal, and communication system provided in embodiments of the present invention, the base station sends uplink transmission configuration information to the terminal. This uplink transmission configuration information includes configuration information for uplink channel resources and / or configuration information for the downlink control channel search space. The information carried by the downlink control channel in the downlink control channel search space includes downlink control information (DCI). The uplink channel resource configuration information sent by the base station can indicate the uplink channel to the terminal, helping the terminal to achieve uplink transmission. The downlink control channel search space configuration information can indicate the search space for the downlink control channel to the terminal, allowing the terminal to detect the DCI sent by the base station and achieve downlink transmission with the base station. Therefore, through the indication of the uplink transmission configuration information, information transmission can be successfully achieved regardless of whether the terminal is in an RRC connection state or an RRC space state. Naturally, when the terminal is in an RRC space state, data transmission can be completed without state switching, reducing the power consumption and resource consumption caused by state switching, which is beneficial for optimizing the configuration of terminal resources and enhancing the user experience on the terminal side.

[0031] Other features and corresponding beneficial effects of the present invention will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in the specification. Attached Figure Description

[0032] Figure 1 This is an interaction flowchart of a base station and a terminal in an information transmission scheme provided in Embodiment 1 of the present invention;

[0033] Figure 2 This is another interaction flowchart between the base station and the terminal in the information transmission scheme provided in Embodiment 1 of the present invention;

[0034] Figure 3 This is a flowchart illustrating another interaction between a base station and a terminal in the information transmission scheme provided in Embodiment 1 of the present invention.

[0035] Figure 4 This is a schematic diagram of the information transmission device provided in Embodiment 2 of the present invention;

[0036] Figure 5This is a schematic diagram of the structure of the information receiving device provided in Embodiment 2 of the present invention;

[0037] Figure 6 This is a schematic diagram of the uplink channel resources indicated by the configuration information of the uplink channel resources in Embodiment 3 of the present invention;

[0038] Figure 7 This is a schematic diagram illustrating the relationship between the search space indicated by the downlink control channel search space configuration information and the uplink channel resources indicated by the uplink channel resource configuration information in Embodiment 3 of the present invention.

[0039] Figure 8 This is a schematic diagram illustrating the positional relationship between the paging timing in the paging transmission window and the sending opportunity in the search space, as shown in Example 1 of Embodiment 3 of the present invention.

[0040] Figure 9 This is a schematic diagram illustrating the positional relationship between the paging timing in the paging transmission window and the sending opportunity in the search space, as shown in Example 2 of Embodiment 3 of the present invention.

[0041] Figure 10 This is a schematic diagram of a hardware structure of a base station provided in Embodiment 4 of the present invention;

[0042] Figure 11 This is a schematic diagram of a hardware structure of a terminal provided in Embodiment 4 of the present invention;

[0043] Figure 12 This is a schematic diagram of a communication system provided in Embodiment 4 of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments of this invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] Example 1:

[0046] With the development of smart terminals and the enrichment of wireless data application services, the number of data users in wireless communication networks has increased significantly. Wireless data content is no longer limited to traditional text or images, but also increasingly includes high-definition video, mobile TV, and other multimedia services, leading to an explosive growth in wireless communication network traffic. Mobile Internet and Internet of Things (IoT) services will become the main driving forces for the development of mobile communications.

[0047] For the Internet of Things (IoT), the 3GPP (3rd Generation Partnership Project) standards organization has developed two highly representative communication standard protocols: MTC (Machine Type Communication) and NB-IoT (Narrowband Internet of Things). For mobile internet, the 3GPP standards organization has recently developed the 5G NR (New Radio) communication standard protocol. With these communication standard protocols, terminals enter an RRC idle state to reduce power consumption when there is no data to send or receive. According to these communication standard protocols, the terminal must switch from the RRC idle state to the RRC connected state before sending or receiving data.

[0048] However, the transition from the RRC idle state to the RRC connected state by a terminal incurs power consumption and system resource consumption. The power consumption and resource consumption resulting from state switching are particularly prominent in IoT applications. This is because the amount of data transmitted by the terminal in IoT is not large, but the transmission process may occur periodically. This means that each small amount of data transmission by the terminal can lead to significant power consumption and resource consumption due to RRC state switching, thus affecting terminal performance and standby time, and reducing the user experience on the terminal side.

[0049] To address the aforementioned problems, this embodiment provides an information sending method and an information receiving method. The information sending method is applied to the base station side, while the information receiving method is applied to the terminal side. Please refer to [link to relevant documentation]. Figure 1 The diagram shown illustrates an interaction flow between a base station and a terminal:

[0050] S102: The base station sends uplink transmission configuration information to the terminal.

[0051] For the terminal, it receives uplink transmission configuration information sent by the base station. In this embodiment, the uplink transmission configuration information includes at least one of the following two types of information:

[0052] (1) Uplink channel resource configuration information;

[0053] (2) Configuration information of the downlink control channel search space.

[0054] In some examples of this embodiment, the uplink transmission configuration information includes only one of the two types of information mentioned above, while in other examples, the uplink transmission configuration information may include both types of configuration information simultaneously. In this embodiment, the uplink transmission configuration information can be used to instruct the terminal to perform uplink transmission in RRC connected state or to instruct the terminal to perform uplink transmission in RRC idle state. Therefore, in this embodiment, even if the terminal needs to perform uplink data transmission in RRC idle state, it does not need to switch from RRC idle state to RRC connected state, avoiding various signaling interactions required during the state switching process. This also avoids the power consumption and system resource consumption generated by the terminal during the state switching signaling exchange process, which is beneficial for the optimized configuration of terminal resources.

[0055] In some examples of this embodiment, the base station and the terminal can agree that, through the configuration of uplink transmission configuration information, uplink transmission can be enabled both in the RRC idle state and in the non-idle state. In other examples of this embodiment, the base station can set an idle transmission indication flag in the uplink transmission configuration indication information to indicate whether the terminal can perform uplink transmission in the RRC idle state.

[0056] If the uplink transmission configuration information includes the first type of configuration information mentioned above, namely, the configuration information of uplink channel resources, then the base station can indicate the uplink channel resources to the terminal through this configuration information. The uplink channel configured through the uplink channel resource configuration information can be a resource dedicated to the terminal receiving the uplink transmission configuration information. Of course, in other cases, the uplink channel configured through the uplink channel resource configuration information can also be a resource shared by a group of terminals (more than one terminal). It is understood that the uplink channel resources configured through the uplink channel resource configuration information can be continuously distributed or discretely distributed in the time domain, for example, exhibiting a periodic distribution.

[0057] If the uplink transmission configuration information includes the second type of configuration information mentioned above, that is, the configuration information of the downlink control channel search space, then the configuration information can indicate the search space of the downlink control channel to the terminal.

[0058] In this embodiment, the configuration information of the downlink control channel search space includes at least one of the following:

[0059] 1) Temporal location information of the downlink control channel search space;

[0060] 2) Frequency domain location information of the downlink control channel search space;

[0061] 3) Distribution information of downlink control channels in the downlink control channel search space.

[0062] The configuration information of the downlink control channel search space: The downlink control channel search space can be continuously distributed or discretely distributed in the time domain, such as periodically distributed.

[0063] When the uplink channel configured through the uplink channel resource configuration information is a resource dedicated to a specific terminal, the downlink control channel search space configured through the downlink control channel search space configuration information is also dedicated to that terminal. Conversely, when the uplink channel configured through the uplink channel resource configuration information is a resource shared by a group of terminals, the downlink control channel search space configured through the downlink control channel search space configuration information is also shared by that group of terminals.

[0064] In some examples of this embodiment, the uplink transmission configuration information may include, in addition to at least one of uplink channel resource configuration information and downlink control channel search space configuration information, the following:

[0065] (3) Configuration information of Physical Random Access Channel (PRACH).

[0066] The physical random access channel configuration information includes at least one of the following:

[0067] 1) Configuration information of time-frequency resources occupied by physical random access channels;

[0068] 2) Configuration information of random access signals transmitted on the physical random access channel.

[0069] When the uplink transmission configuration information includes the configuration information of the physical random access channel and the configuration information of the uplink channel resources, the uplink transmission can be understood as sending uplink data when the random access signal is sent, or it can be understood as the transmission of random access signals carrying uplink data in the 5G NR system.

[0070] In this embodiment, one downlink control channel search space corresponds to at least one uplink channel. In some examples, each uplink channel resource corresponds to one downlink control channel search space. It is understood that the information carried by the downlink channel in the downlink control channel search space includes the DCI (Distributed Control Channel Information). In some examples, the DCI may include at least one of the following types of information:

[0071] ◆First scheduling information;

[0072] ◆Second scheduling information;

[0073] ◆HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement) information for data transmitted on the uplink channel;

[0074] ◆Uplink transmission power adjustment information;

[0075] ◆First instruction information;

[0076] ◆Uplink Grant (UL Grant) information;

[0077] ◆Timing Advanced (TA) update information;

[0078] ◆Resource configuration information for this DCI response message;

[0079] ◆Downlink Grant (DL Grant) information.

[0080] The following sections describe the various types of information that may be carried in a DCI:

[0081] ◆First scheduling information:

[0082] In some examples of this embodiment, when the first condition is met, the base station will send first scheduling information for indicating downlink data transmission in the downlink control channel search space indicated by the configuration information of the downlink control channel search space, so that the terminal can receive downlink data according to the first scheduling information.

[0083] Please see Figure 2 The following is a flowchart illustrating the interaction between a terminal and a base station:

[0084] S202: The base station determines that the first condition is currently met;

[0085] S204: The base station sends the first scheduling information to the terminal;

[0086] S206: The terminal receives downlink data sent by the base station according to the first scheduling information.

[0087] according to Figure 2 It can be seen that the terminal will also receive the first scheduling information sent by the base station when the first condition is met, and receive downlink data according to the first scheduling information.

[0088] In some examples, the first scheduling information can be a paging message sent by the base station to the terminal. The downlink data transmitted on the downlink channel indicated by the first scheduling information is the downlink data indicated to the terminal by the paging message. The first scheduling information may include at least one of the following: downlink channel configuration information, modulation order of the downlink data to be transmitted, and indication information of the transmission data block size.

[0089] The first condition mentioned above includes at least one of the following:

[0090] Condition 1: The downlink control channel search space at least partially overlaps with the PTW (Paging Transmission Window);

[0091] Condition 2: The downlink control channels in the downlink control channel search space at least partially overlap with the PTW;

[0092] Condition 3: The terminal's TA (Timing Advancement) is in a valid state. Here, "terminal" refers to the target terminal to which the base station sends the Paging message. The base station needs to be able to determine that the target terminal's timing advance is in a valid state.

[0093] It is understandable that "at least partially overlapping" means that there is an overlapping portion. For example, the at least partial overlap between the downlink control channel search space and the PTW can mean that they completely overlap or partially overlap. Similarly, at least partial overlap between the downlink control channel and the PTW also includes the case where the downlink control channel and the PTW completely overlap, as well as the case where the downlink control channel and the PTW partially overlap.

[0094] In other examples of this embodiment, the first condition includes, in addition to at least one of the three conditions described above, the following:

[0095] Condition 4: The base station detects that the terminal is sending data on the uplink channel corresponding to the downlink control channel search space.

[0096] Therefore, for the terminal, condition four is that it has sent data to the base station on the uplink channel corresponding to the downlink control channel search space.

[0097] In some examples of this embodiment, when the first condition is determined to be met, the base station and the terminal can operate in accordance with one of the following two examples, which are described below:

[0098] • First example:

[0099] The base station will operate in the following ways:

[0100] 1) The base station does not send paging messages on the PO (Paging Occasion) within the PTW; that is, the base station does not send paging messages on any PO within the PTW.

[0101] 2) When a PO within the PTW at least partially overlaps with the downlink control channel search space, the base station will not send paging messages on that PO;

[0102] 3) When a PO within the PTW overlaps at least partially with a downlink control channel in the downlink control channel search space, the base station will not send paging messages on that PO;

[0103] 4) When the time-domain interval between a PO within the PTW and a downlink control channel in the downlink control channel search space is less than or equal to a first threshold, the base station will not send a paging message on that PO. The first threshold can be configured by the base station or network and sent to the terminal, or it can be a default value.

[0104] Correspondingly, if the first condition is met, the terminal will perform at least one of the following operations:

[0105] 1) Paging message detection is not performed on POs within the PTW; that is, the terminal does not perform paging message detection on any PO within the PTW.

[0106] 2) When a PO within the PTW at least partially overlaps with the downlink control channel search space, the terminal does not perform paging message detection on that PO;

[0107] 3) When a PO within the PTW at least partially overlaps with a downlink control channel in the downlink control channel search space, the terminal does not perform paging message detection on that PO;

[0108] 4) When the time-domain interval between a certain PO within the PTW and a certain downlink control channel in the downlink control channel search space is less than or equal to the first threshold, the terminal does not perform paging message detection on that PO.

[0109] It is understandable that the terminal's operation mode corresponds to the base station's operation mode. If the base station performs operation 1) as described above, the terminal will also perform operation 1). If the base station performs operation 4), the terminal will also perform operation 4).

[0110] It should be noted that the "PO" in these operation methods does not refer to a specific PO, but rather to all POs in the PTW that meet the corresponding conditions. For example, for the POs in 2) where the base station does not send paging messages, it refers to all POs in the PTW that at least partially overlap with the downlink control channel search space. Similarly, for the POs in 3) where the base station does not send paging messages, it refers to all POs that at least partially overlap with the downlink control channels in the downlink control channel search space.

[0111] • Second example:

[0112] In other examples of this embodiment, when the first condition is determined to be met, the base station may operate in the following ways:

[0113] (1) The base station sends paging messages on the PO within the PTW; that is, the base station sends paging messages on each PO within the PTW.

[0114] (2) When a certain PO in the PTW does not overlap with the downlink control channel search space, the base station sends a paging message on that PO;

[0115] (3) When a certain PO in the PTW does not overlap with the downlink control channel in the downlink control channel search space, the base station sends a paging message on that PO;

[0116] (4) When the time-domain interval between a PO within the PTW and a downlink control channel in the downlink control channel search space is greater than or equal to the second threshold, the base station sends a paging message on that PO. The second threshold can be configured by the base station or network and sent to the terminal, or it can be a default value. It is understood that the second threshold and the first threshold can be the same or different.

[0117] Correspondingly, if the first condition is met, the terminal will perform at least one of the following operations:

[0118] (1) The terminal performs paging message detection on each PO in the PTW; that is, the terminal performs paging message detection on each PO in the PTW.

[0119] (2) When a certain PO in the PTW does not overlap with the downlink control channel search space, the terminal performs paging message detection on that PO;

[0120] (3) When a certain PO in the PTW does not overlap with the downlink control channel in the downlink control channel search space, the terminal performs paging message detection on that PO;

[0121] (4) When the time interval between a certain PO in the PTW and a certain downlink control channel in the downlink control channel search space is greater than or equal to the second threshold, the terminal performs paging message detection on that PO.

[0122] The second example is similar to the first, with the terminal's operation method corresponding to that of the base station. Similarly, in the second example, "a certain PO" in the various operation methods does not specifically refer to a single PO, but rather to all POs in the PTW that meet the corresponding conditions.

[0123] ◆Second scheduling information:

[0124] In some examples of this embodiment, the base station transmits second scheduling information in the downlink control channel search space, and the DCI carrying the second scheduling information is scrambled using a terminal-specific RNTI (Radio Network Temporary Identifier). In this embodiment, the base station transmitting the second scheduling information in the downlink control channel search space is independent of whether the aforementioned first condition is met. That is, in this example, the base station requires the first condition to be met when transmitting the first scheduling information to the terminal, but does not require the first condition to be met when transmitting the second scheduling information to the terminal. The second scheduling information is used to indicate downlink data transmission to the terminal. For the terminal, it detects the second scheduling information for downlink data transmission in the downlink control channel search space. Subsequently, the base station transmits downlink data to the terminal on the downlink channel indicated by the second scheduling information, allowing the terminal to receive it.

[0125] It is understandable that after the terminal detects the downlink data sent by the base station according to the second scheduling information, it may achieve correct reception of the downlink data, or it may fail to receive it. Therefore, in some examples, when the terminal fails to detect the downlink data sent by the base station, it can send a NACK (Negative Acknowledgment) indication message to the base station indicating data reception failure. When the base station receives the NACK indication message for the downlink data sent by the terminal, it can send retransmission scheduling information for the downlink data in the first downlink control channel search space. Subsequently, it retransmits the downlink data to the terminal. Therefore, if the terminal fails to receive the downlink data correctly according to the second scheduling information, it can detect the retransmission scheduling information for the downlink data in the first downlink control channel search space.

[0126] The search space for the first downlink control channel used to send retransmission scheduling information can be configured in at least one of the following ways:

[0127] Method 1: Configure the second scheduling information. That is, when the base station sends the second scheduling information to the terminal to enable the terminal to receive downlink data, it will configure the first downlink control channel search space in the second scheduling information to send retransmission scheduling information after the downlink data transmission fails.

[0128] Method 2: Configure in the downlink channel indicated by the second scheduling information;

[0129] Method 3: Configuration via uplink transmission configuration information; it can be understood that when the base station indicates the first downlink control channel search space to the terminal via uplink transmission configuration information, it can be configured via the configuration information of the downlink control channel search space, or it can be configured via other information.

[0130] Method 4: Configure in SI (System Information).

[0131] ◆HARQ-ACK information for data transmitted on the uplink channel:

[0132] As described above, the configuration information of the downlink control channel search space can configure the downlink control channel search space for the terminal. In some examples, the DCI carried by the downlink control channel includes HARQ-ACK information for data transmitted on the uplink channel. This HARQ-ACK information is used by the base station to provide feedback to the terminal on its reception status of the uplink data. Undoubtedly, the HARQ-ACK information can be either a positive ACK or a negative NACK.

[0133] In some examples of this embodiment, the base station can use 1 bit of information to indicate whether the HARQ-ACK is ACK or NACK. For example, in some examples of this embodiment, the information sent by the base station to the terminal includes 4 bits. When the first three bits are "001", it indicates that the information is HARQ-ACK information. After receiving the information and determining that it is HARQ-ACK information, the terminal can further determine whether the HARQ-ACK information is ACK or NACK by parsing the last bit of information. Of course, in other examples of this embodiment, the base station can use multiple bits to indicate to the terminal whether the HARQ-ACK information is ACK or NACK.

[0134] In other examples of this embodiment, the base station can characterize whether HARQ-ACK is ACK or NACK using sequences. For example, the base station can characterize ACK by carrying a first sequence in the HARQ-ACK information, and indicate that HARQ-ACK is NACK by carrying a second sequence in the HARQ-ACK information. The first and second sequences can be configured by the base station or use a default configuration. Furthermore, the first sequence can be obtained by sequence expansion of 1-bit ACK information, and the second sequence can be obtained by sequence expansion of 1-bit NACK information.

[0135] ◆Uplink transmission power adjustment information:

[0136] In one example of this embodiment, if the HARQ-ACK in the DCI sent by the base station to the terminal is ACK, then the DCI also includes uplink transmission power adjustment information. The uplink transmission power adjustment information instructs the terminal to adjust its transmit power to obtain the transmit power for uplink transmission on the next available uplink channel resource. Here, the terminal's current transmit power is referred to as the "current transmit power," and the transmit power for uplink transmission on the next available uplink channel resource is referred to as the "target transmit power." Therefore, the uplink transmission power adjustment information instructs the terminal to adjust its current transmit power to obtain the target transmit power.

[0137] It is understandable that uplink transmission power adjustment information can instruct the terminal to adjust its transmit power in at least one of two ways:

[0138] In some examples of this embodiment, the uplink transmission power adjustment information carries a transmission power adjustment strategy, which instructs the terminal to adjust the current transmission power to obtain the target transmission power. In one possible example, the adjustment strategy carried in the uplink transmission power adjustment information is a power adjustment value, which can be positive or negative. Undoubtedly, the target transmission power, the current transmission power, and the power adjustment value satisfy the following relationship:

[0139] Target transmit power = Current transmit power + Power adjustment value;

[0140] For example, in one instance, the power adjustment value is -3dBm. After obtaining this power adjustment value, the terminal can obtain the target transmission power by adding (-3dBm) to the current transmission power.

[0141] In other examples of this embodiment, the uplink transmission power adjustment information can directly carry the target transmit power value. In this way, when the terminal receives the DCI carrying the uplink transmission power adjustment information sent by the base station, it can directly obtain the target transmit power by parsing the uplink transmission power adjustment information without having to do the calculation itself.

[0142] ◆First instruction information:

[0143] In some examples of this embodiment, the DCI may include first indication information, which is used to instruct the terminal to perform at least one of the following operations:

[0144] 1. Transmit random access signals on the random access channel;

[0145] 2. Return to RRC idle state;

[0146] 3. Exit the uplink transmission mode configured through the uplink transmission configuration information;

[0147] 4. Release the uplink channel resources and / or search space resources configured through the uplink transmission configuration information;

[0148] 5. Perform uplink transmission on the next available uplink channel resource.

[0149] It is understandable that the first instruction information can also simultaneously instruct the terminal to perform two or more of the above operations. For example, in some cases, after the terminal detects the DCI sent by the base station, it determines through parsing that the base station instructs it to perform operations 2, 3, and 4 simultaneously. In this case, the terminal can exit the corresponding uplink transmission mode, release the uplink channel resources and / or search space resources configured through the uplink transmission configuration information, and fall back to the RRC idle state.

[0150] In this embodiment, when the terminal transmits a random access signal on the random access channel according to the instruction of the first instruction information: if the format of the DCI carrying the first instruction information is a first format, then the terminal transmits the random access signal on the random access channel. Here, the first format DCI refers to a DCI that includes at least random access configuration information. In some examples, the first format DCI may be a PDCCH Order (Physical Downlink Control Channel Order).

[0151] In one example of this embodiment, if the HARQ-ACK in the DCI received by the terminal is NACK, then when the terminal performs uplink transmission on the next available uplink channel resource according to the indication of the first indication information, the transmitted data can be the data corresponding to NACK in the DCI, or it can be other data.

[0152] ◆Uplink resource granting information:

[0153] In some examples, the DCI sent by the base station to the terminal includes uplink resource grant information, and the DCI indicates that the data transmitted on the corresponding uplink channel has been correctly received when at least one field in the uplink resource grant information takes the value of a first set of values. Here, a field can refer to an IE (Information Element). It is understood that the first set of values ​​can be configured by the base station and notified to the terminal, or a default configuration can be used.

[0154] The IE used in the UL Grant to "indicate that the data transmitted on the corresponding uplink channel has been correctly received" can be the resource allocation information for uplink transmission. The values ​​in the first value set can be the values ​​corresponding to invalid uplink transmission resource allocation information. For example, in some examples of this embodiment, the values ​​in the first value set include "00", "01", "10", and "11", where "00", "01", and "10" are all valid uplink transmission resource allocation information, and only "11" is the value corresponding to invalid uplink transmission resource allocation information. Then, the base station can indicate that the uplink data on the corresponding uplink channel of the terminal has been correctly received by including "11" in the UL Grant.

[0155] In this embodiment, the resources indicated by the UL grant can be used for HARQ retransmission of the aforementioned uplink data, or for the transmission of other uplink data. The UL grant includes the necessary configuration information for uplink transmission.

[0156] ◆TA Update Information:

[0157] In some examples of this embodiment, the DCI includes TA update information. Similar to uplink transmission power adjustment information, when the base station instructs the terminal to adjust the TA, it can also instruct the terminal by notifying the terminal of the TA adjustment value. However, in this embodiment, the so-called TA adjustment value is not necessarily the change of the updated TA value relative to the current TA value, but rather the change of the updated TA value relative to a reference TA value. This reference TA value can be the most recently saved TA value or the TA value sent in the RAR (Random Access Response) message. Therefore, in these examples, the TA update information in the DCI can be the change of the updated TA value relative to the reference TA value.

[0158] Of course, the base station can also directly notify the terminal of the updated TA value. Therefore, in these examples, the TA update information carried in the DCI can be the updated TA value in other real-time examples.

[0159] It is understood that, in some examples of this embodiment, the TA update information may include both the updated TA value and the change in the updated TA value relative to the reference TA value.

[0160] After receiving the DCI, the terminal can obtain the updated TA value based on the TA update information in the DCI, and save the updated TA value for use when sending uplink information later.

[0161] ◆Resource configuration information for this DCI response:

[0162] In one example of this embodiment, if the DCI sent by the base station to the terminal includes at least one of ACK information and TA update information, the terminal will send a response message to the base station after receiving the DCI. This response message is used by the terminal to notify the base station whether the DCI it sent was successfully received. To allow the terminal to understand which resources are used to send the DCI response message, in one example of this embodiment, if the DCI includes ACK information and / or TA update information, the DCI will also include resource configuration information for the DCI response message.

[0163] It is understandable that if the DCI sent by the base station to the terminal includes ACK information and / or TA update information, the base station will also receive the response information of the DCI. The base station will receive the response information according to the resource configuration information in the response information of the DCI.

[0164] Please see Figure 3 The diagram shown illustrates an interaction flow between the terminal and the base station:

[0165] S302: The base station sends a DCI to the terminal.

[0166] In this example, the DCI information includes resource configuration information such as ACK information, TA update information, and DCI response information.

[0167] S304: The terminal sends a response message for the DCI to the base station using the resources configured in the resource configuration information.

[0168] In some examples of this embodiment, if the DCI sent by the base station to the terminal includes ACK information and / or TA update information, the terminal will detect the downlink control channel search space within a first time window. The length of this first time window can be configured by the base station or use a default configuration, and the start time of the first time window can also be configured by the base station or use a default configuration. It is understood that the length and start time of the first time window can be configured in different ways. For example, in one example of this embodiment, the length of the first time window is configured by the base station, while the start time uses a default configuration. Of course, in other examples of this embodiment, the two parameters used by the terminal to determine the first time window can also be configured in the same way, for example, both can be configured by the base station or both can use a default configuration.

[0169] In some other examples of this embodiment, if the DCI sent by the base station to the terminal includes ACK information and / or TA update information, the terminal will continue to detect the downlink control channel search space until the downlink control channel search space times out.

[0170] ◆Downlink resource granting information:

[0171] In some examples of this embodiment, when the DCI includes downlink resource grant information, it can be used to indicate that the data transmitted on the uplink channel corresponding to the DCI has been correctly received. Once the terminal receives the DCI, it can determine that the data it transmitted to the base station through the uplink channel corresponding to the DCI has been correctly received by the base station.

[0172] The information sending and receiving methods provided in this embodiment allow the terminal to directly transmit data uplink in RRC idle state by sending uplink transmission configuration information from the base station. This eliminates the state switching process before uplink transmission, avoiding signaling interactions caused by state switching, and naturally reducing terminal power consumption and the occupation of terminal system resources. This transmission scheme can significantly reduce terminal power consumption, extend terminal battery life, and enhance the user experience on the terminal side when applied to scenarios requiring frequent data transmission or periodic uplink transmission.

[0173] Example 2:

[0174] This embodiment provides an information sending device; please refer to [link / reference]. Figure 4 The information sending device 40 can be applied to the base station side and can be deployed on the base station to implement the information sending method in the aforementioned embodiments. The information sending device 40 includes a sending module 402, which is used by the terminal to send uplink transmission configuration information.

[0175] This embodiment also provides an information receiving device that can be applied to the terminal side; please refer to [link to documentation]. Figure 5 The information receiving device 50 includes a receiving module 502, which is used to receive uplink transmission configuration information sent by the base station. The information receiving device 50 can be deployed on a terminal to implement the information receiving method described in the foregoing embodiments.

[0176] In this embodiment, the function of the transmitting module 402 can be jointly implemented by the communication unit and the processor on the base station side, while the function of the receiving module 502 is jointly implemented by the processor and the communication unit of the terminal.

[0177] In this embodiment, the uplink transmission configuration information includes at least one of the following two types of information:

[0178] (1) Uplink channel resource configuration information;

[0179] (2) Configuration information of the downlink control channel search space.

[0180] In some examples of this embodiment, the uplink transmission configuration information includes only one of the two types of information mentioned above, while in other examples, the uplink transmission configuration information may include both types of configuration information simultaneously. In this embodiment, the uplink transmission configuration information can be used to instruct the terminal to perform uplink transmission in RRC connected state or to instruct the terminal to perform uplink transmission in RRC idle state. Therefore, in this embodiment, even if the terminal needs to perform uplink data transmission in RRC idle state, it does not need to switch from RRC idle state to RRC connected state, avoiding various signaling interactions required during the state switching process. This also avoids the power consumption and system resource consumption generated by the terminal during the state switching signaling exchange process, which is beneficial for the optimized configuration of terminal resources.

[0181] If the uplink transmission configuration information includes the first type of configuration information mentioned above, namely, the configuration information of uplink channel resources, then the base station can indicate the uplink channel resources to the terminal through this configuration information. The uplink channel configured through the uplink channel resource configuration information can be a resource dedicated to the terminal receiving the uplink transmission configuration information. Of course, in other cases, the uplink channel configured through the uplink channel resource configuration information can also be a resource shared by a group of terminals (more than one terminal). It is understood that the uplink channel resources configured through the uplink channel resource configuration information can be continuously distributed or discretely distributed in the time domain, for example, exhibiting a periodic distribution.

[0182] If the uplink transmission configuration information includes the second type of configuration information mentioned above, that is, the configuration information of the downlink control channel search space, then the configuration information can indicate the search space of the downlink control channel to the terminal.

[0183] In this embodiment, the configuration information of the downlink control channel search space includes at least one of the following:

[0184] 1) Temporal location information of the downlink control channel search space;

[0185] 2) Frequency domain location information of the downlink control channel search space;

[0186] 3) Distribution information of downlink control channels in the downlink control channel search space.

[0187] The configuration information of the downlink control channel search space: The downlink control channel search space can be continuously distributed or discretely distributed in the time domain, such as periodically distributed.

[0188] When the uplink channel configured through the uplink channel resource configuration information is a resource dedicated to a specific terminal, the downlink control channel search space configured through the downlink control channel search space configuration information is also dedicated to that terminal. Conversely, when the uplink channel configured through the uplink channel resource configuration information is a resource shared by a group of terminals, the downlink control channel search space configured through the downlink control channel search space configuration information is also shared by that group of terminals.

[0189] Furthermore, in this embodiment, one downlink control channel search space corresponds to at least one uplink channel. In some examples, each uplink channel resource corresponds to one downlink control channel search space. It is understood that the information carried by the downlink channel in the downlink control channel search space includes the DCI (Distributed Control Channel Information). In some examples, the DCI may include at least one of the following types of information:

[0190] ◆First scheduling information;

[0191] ◆Second scheduling information;

[0192] ◆HARQ-ACK information for data transmitted on the uplink channel;

[0193] ◆Uplink transmission power adjustment information;

[0194] ◆First instruction information;

[0195] ◆Information on the granting of upstream resources;

[0196] ◆TA update information;

[0197] ◆Resource configuration information for this DCI response message;

[0198] ◆Downlink resource granting information.

[0199] For details regarding the implementation of the information sending method in Embodiment 1 by the information sending device 40 and the implementation of the information receiving method in Embodiment 1 by the information receiving device 50, please refer to the description of Embodiment 1, which will not be repeated here.

[0200] It is understood that in other examples of this embodiment, the information transmitting device 40 may also include a receiving module for receiving information transmitted by the terminal. The information receiving device 50 may also include a transmitting module for transmitting information to the base station.

[0201] The information sending and receiving devices provided in this embodiment allow the terminal to directly transmit data uplink in RRC idle state by sending uplink transmission configuration information from the base station. This eliminates the state switching process before uplink transmission, avoiding signaling interactions caused by state switching, and naturally reducing terminal power consumption and the occupation of terminal system resources. This transmission scheme can significantly reduce terminal power consumption, extend terminal battery life, and enhance the user experience on the terminal side when applied to scenarios requiring frequent data transmission or periodic uplink transmission.

[0202] Example 3:

[0203] To enable those skilled in the art to better understand the advantages and details of the aforementioned information sending and receiving methods, this embodiment will continue to describe the information transmission scheme with examples:

[0204] In a wireless communication system, a base station sends uplink transmission configuration information to a terminal (UE), wherein the uplink channel configuration information includes:

[0205] Uplink channel resource configuration information;

[0206] Configuration information for the downlink control channel search space;

[0207] In this embodiment, the uplink transmission configuration information can support data transmission of the UE in RRC-IDLE state.

[0208] The uplink channel resource configuration information indicates the location information of a set of uplink channel resources, such as... Figure 6 As shown, the configuration period for uplink channel resources is 1 hour, and the offset of the time domain position of uplink channel resources within the configuration period is 10 minutes. Figure 6 The document provides a location diagram of 24 uplink channel resources within 24 hours, namely uplink channel resource 601, uplink channel resource 602...uplink channel resource 624.

[0209] In this embodiment, the base station configures a dedicated downlink control channel search space for the terminal using the downlink control channel search space configuration information. This search space includes a set of transmission resources (also known as transmission opportunities) for at least one downlink control channel. The DCI is transmitted on the downlink control channel. Each uplink channel resource corresponds to a downlink control channel search space, such as... Figure 7 As shown, uplink channel resource 601 corresponds to search space 701, uplink channel resource 602 corresponds to search space 702, and so on, uplink channel resource 624 corresponds to search space 724. In this embodiment, there is a time-domain interval between the start time of a search space and the end time of its corresponding uplink channel resource. For example, there is a certain time-domain interval between the end time of uplink channel resource 601 and the start time of search space 701. Here, the time-domain interval between the end time of uplink channel resource 601 and the start time of search space 701 is defined as time-domain interval 1. Similarly, the time interval between the end time of uplink channel resource 624 and the start time of search space 724 can be defined as time-domain interval 24.

[0210] Example 1:

[0211] In this example, the time domain location of the paging transmission window 801 where the base station sends paging information is as follows: Figure 8 As shown, the PTW includes two paging opportunities (POs): paging opportunity 8011 and paging opportunity 8012. The search space 701 has two downlink control channel transmission opportunities: transmission opportunity 7011 and transmission opportunity 7012. The time domain location of paging transmission window 8011 overlaps with the time domain location of search space 701, and paging opportunity 8012 and transmission opportunity 7012 also overlap.

[0212] In this example, when a PO within the PTW at least partially overlaps with a downlink control channel in the downlink control channel search space, the base station does not transmit paging messages on that PO; when a PO within the PTW does not overlap with the corresponding downlink control channel in the downlink control channel search space, the base station transmits paging messages on the PO. Therefore, the base station will not transmit paging on paging opportunity 8012, but the base station can transmit paging on paging opportunity 8011 and on transmitting opportunity 7012 within the search space 701. The terminal will also attempt to receive paging on paging opportunity 8011 and transmitting opportunity 7012.

[0213] Example 2:

[0214] In this example, the time domain location of the paging transmission window where the base station sends paging information is as follows: Figure 9 As shown, the paging transmission window 901 includes two paging opportunities PO, namely paging opportunity 9011 and paging opportunity 9012. The search space 701 has two downlink control channel transmission opportunities, namely transmission opportunity 7011 and transmission opportunity 7012. The time domain location of the paging transmission window 901 overlaps with the time domain location of the search space 701. The time domain interval between paging opportunity 9011 and transmission opportunity 7011 is D, and D is less than or equal to the threshold T configured by the base station (assuming the threshold T is the first threshold). Those skilled in the art will understand that the threshold T can also be a default configuration. Paging opportunity 9012 and transmission opportunity 7012 partially overlap.

[0215] In this example, when a PO within the PTW at least partially overlaps with a downlink control channel in the downlink control channel search space, the base station does not transmit paging messages on that PO. When the time-domain interval between a PO within the PTW and a downlink control channel in the downlink control channel search space is less than or equal to a first threshold, the base station does not transmit paging messages on the PO. Because the time-domain interval D between paging opportunity 9011 and transmitting opportunity 7011 is less than or equal to T, the base station will not transmit paging on paging opportunity 9011, but will transmit paging through transmitting opportunity 7011. Because paging opportunity 9012 and transmitting opportunity 7012 partially overlap, the base station will not transmit paging on paging opportunity 9012, but will choose to transmit paging on transmitting opportunity 7012. Correspondingly, the terminal will attempt to receive paging on transmitting opportunity 7011 and transmitting opportunity 7012 corresponding to the paging transmission window 901.

[0216] Example 4:

[0217] This embodiment provides a storage medium that can store one or more computer programs that can be read, compiled, and executed by one or more processors. In this embodiment, the storage medium can store one of an information sending program and an information receiving program. The information sending program can be executed by one or more processors to implement any of the information sending methods described in the foregoing embodiments. The information receiving program can be executed by one or more processors to implement any of the information receiving methods described in the foregoing embodiments.

[0218] This embodiment also provides a base station, such as Figure 10 As shown, the base station 100 includes a first processor 101, a first memory 102, and a first communication bus 103 for connecting the first processor 101 and the first memory 102. The first memory 102 can be the aforementioned storage medium storing an information transmission program. The first processor 101 can read the information transmission program, compile it, and execute it to implement the steps of the information transmission method described in the foregoing embodiments. Details of how the base station 100 implements the information transmission method can be found in the description of the foregoing embodiments, and will not be repeated here.

[0219] This embodiment also provides a terminal, such as Figure 11 As shown, terminal 110 includes a second processor 111, a second memory 112, and a second communication bus 113 for connecting the second processor 111 and the second memory 112. The second memory 112 can be the aforementioned storage medium storing the information receiving program. The second processor 111 can read the information receiving program, compile it, and execute it to implement the steps of the information receiving method described in the foregoing embodiments. Details of how terminal 110 implements the information receiving method can be found in the description of the foregoing embodiments, and will not be repeated here.

[0220] This embodiment also provides a communication system; please refer to [link / reference]. Figure 12 The communication system 12 includes a base station 100 and a terminal 110. In some examples, the communication system 12 includes one base station 100 and multiple terminals 110. In other examples of this embodiment, the communication system 12 may not include more than one base station 100.

[0221] The communication system provided in this embodiment can be applied to scenarios that require long-term standby and periodic data uplink transmission, such as the Internet of Things. It avoids RRC state switching during data transmission, reduces signaling interaction, and can significantly reduce terminal power consumption and extend terminal battery life.

[0222] Those skilled in the art should understand that the information sending method, information receiving method, device, terminal and base station, communication system and storage medium provided in the various embodiments of the present invention can be applied not only to existing communication systems and currently deployed 5G communication systems, but also to any future communication system.

[0223] In this application, the technical features of the various embodiments can be combined and used in one embodiment without conflict.

[0224] Obviously, those skilled in the art will understand that all or some of the steps, systems, or devices disclosed above, and their functional modules / units, can be implemented as software (which can be implemented using computer device executable program code), firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, executed by a computing device, and in some cases, the steps shown or described may be performed in a different order than those presented herein. The computer-readable medium may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium. Therefore, this invention is not limited to any particular hardware and software combination.

[0225] The above description, in conjunction with specific implementation methods, provides a further detailed explanation of the embodiments of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A wireless communication method, comprising: The base station sends uplink transmission configuration information to the terminal. This uplink transmission configuration information includes uplink channel resource configuration information and downlink control channel search space configuration information. The information carried by the downlink control channel in the downlink control channel search space includes downlink control information (DCI). The DCI indicates the Hybrid Automatic Repeat Request Response (HARQ-ACK) for data transmitted on the uplink channel. The DCI also indicates the change in the updated timing advance (TA) value relative to the reference TA value. The method further includes: when the first condition that the TA of the terminal is in a valid state is met, and when the paging timing PO and the downlink control channel search space at least partially overlap, skipping the transmission of the paging message on the PO.

2. The method according to claim 1, further comprising: Scheduling information for scheduling downlink data transmission is transmitted in the downlink control channel search space. The scheduling information is scrambled by the terminal-specific Radio Network Temporary Identifier (RNTI).

3. A wireless communication method, comprising: The terminal receives uplink transmission configuration information from the base station. This uplink transmission configuration information includes uplink channel resource configuration information and downlink control channel search space configuration information. The information carried by the downlink control channel in the downlink control channel search space includes downlink control information (DCI). Wherein, the DCI indicates the Hybrid Automatic Repeat Request (HARQ) ACK for data transmitted on the uplink channel, and The DCI also indicates the change in the updated timing advance (TA) value relative to the reference TA value. The method further includes: when the first condition that the TA of the terminal is in a valid state is met, and when the paging timing PO and the downlink control channel search space at least partially overlap, skipping the detection of paging messages on the PO.

4. The method according to claim 3, further comprising: Scheduling information for scheduling downlink data transmission is detected in the downlink control channel search space. This scheduling information is scrambled by the terminal-specific Radio Network Temporary Identifier (RNTI).

5. A wireless communication device, comprising a processor and a memory, the processor being configured to perform the following operations: The base station sends uplink transmission configuration information to the terminal. This uplink transmission configuration information includes uplink channel resource configuration information and downlink control channel search space configuration information. in, The information carried by the downlink control channel in the downlink control channel search space includes downlink control information (DCI). Wherein, the DCI indicates the Hybrid Automatic Repeat Request (HARQ) ACK for data transmitted on the uplink channel, and The DCI also indicates the change in the updated timing advance (TA) value relative to the reference TA value. The processor is further configured to perform the following operation: when a first condition is met that the TA of the terminal is in a valid state, and when the paging timing PO and the downlink control channel search space at least partially overlap, skip sending the paging message on the PO.

6. The wireless communication device according to claim 5, wherein the processor is further configured to perform the following operation: transmitting scheduling information for scheduling downlink data transmission in the downlink control channel search space, the scheduling information being scrambled by a terminal-specific wireless network temporary identifier (RNTI).

7. A wireless communication device, comprising a processor and a memory, the processor being configured to perform the following operations: The terminal receives uplink transmission configuration information from the base station. This uplink transmission configuration information includes uplink channel resource configuration information and downlink control channel search space configuration information. in, The information carried by the downlink control channel in the downlink control channel search space includes downlink control information (DCI). Wherein, the DCI indicates the Hybrid Automatic Repeat Request (HARQ) ACK for data transmitted on the uplink channel, and The DCI also indicates the change in the updated timing advance (TA) value relative to the reference TA value, and The processor is further configured to perform the following operation: when a first condition is met that the TA of the terminal is in a valid state, and when the paging timing PO and the downlink control channel search space at least partially overlap, skip detecting the paging message on the PO.

8. The wireless communication device according to claim 7, wherein, The processor is also configured to perform the following operation: detect scheduling information for scheduling downlink data transmission in the downlink control channel search space, the scheduling information being scrambled by a terminal-specific radio network temporary identifier (RNTI).

9. A computer-readable medium having a computer program stored thereon, which, when executed, implements the method as described in any one of claims 1 to 4.

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