Signal transceiving method, apparatus and system

Abstract

Provided in the embodiments of the present application are a signal transceiving method, apparatus and system. The method comprises: a first device receiving on a first resource a first signal sent by a second device, wherein the first signal at least bears first information and / or second information, the first information is at least control information sent by the second device, and the second information is at least data information sent by the second device; and the first device sending on a second resource a second signal to the second device, wherein the first information is at least used for instructing or controlling or triggering the first device to receive the second information, and / or controlling or scheduling or triggering the first device to send the second signal.

Description

Signal transmission and reception methods, devices and systems Technical Field

[0001] The embodiments of this application relate to the field of communication technology. Background Technology

[0002] From the early days of 2G to 4G, cellular mobile communication systems primarily served mobile phones—human-held mobile terminal devices. With the rapid development of mobile internet and the Internet of Things (IoT), from the later stages of 4G to the present, the evolution of cellular mobile communication technology has considered and supported increasingly diverse IoT application scenarios. Correspondingly, more types of IoT devices have been supported and implemented in actual network deployments and service applications, such as eMTC (enhanced Machine-Type Communication) devices, NB-IoT (Narrow Band Internet of Things) devices, and RedCap (Reduced Capability) devices. With the increasing diversity of IoT terminal devices, cellular mobile systems have gained increasingly stronger capabilities in providing services and offering services to vertical industries.

[0003] Digital mobile communication has evolved through 2G, 3G, 4G, and now 5G, effectively meeting people's needs in voice communication, digital mobile communication, and mobile broadband networking. However, with social and economic development, the demand for Internet of Things (IoT) communication is gradually emerging. To meet the needs of IoT communication, 3GPP (3rd Generation Partnership Project) has defined a series of IoT technology standards, including MTC, NB-IoT, and RedCap.

[0004] While existing IoT technology standards have met the requirements of low cost, low power consumption, and massive connectivity for IoT terminal devices, there are still many scenarios where IoT communication needs cannot be met using these standards. These include extreme working environments that hinder the maintenance of IoT terminal devices, and the need for extremely small size and low cost terminal devices. How 3GPP can support these IoT terminal device requirements within cellular systems is a problem that needs to be addressed.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0006] The inventors discovered that RFID (Radio Frequency Identification) technology is a widely used communication technology that can identify specific targets and read / write related data in a non-contact manner. The advantages of RFID systems include low tag cost and small size, making them frequently used in various applications such as logistics information collection, retail, libraries, and identity verification. One disadvantage of RFID systems is the limited information reading range (based on the wireless signal communication range) of RFID tags. Using manual handheld tag readers can result in high labor costs, which may be the main expense. Using dedicated RFID gateways to read and manage RFID tags requires significant deployment costs. Furthermore, the simple logical architecture of RFID systems makes it difficult to effectively coordinate with interference in radio wave transmission, resulting in generally low system capacity and spectrum utilization efficiency.

[0007] Compared to RFID systems, 3GPP's 5G systems support tag-based terminal devices, allowing for the reuse of existing base stations and leveraging existing cellular networks to support industry applications based on this type of terminal, thereby effectively reducing deployment and usage costs. 3GPP's 5G systems can provide reliable authentication, network coordination, and accurate and stable terminal device management mechanisms, and can also optimize the network to improve system capacity and spectrum utilization efficiency.

[0008] As a new type of IoT terminal in 5G systems, Ambient IoT devices (AIoT devices) are severely constrained by cost. Their capabilities are significantly weaker than those of ordinary smartphones and other IoT devices supported by existing cellular mobile communication systems. For example, AIoT devices have extremely limited processing power and storage resources, making it impossible to reuse existing 5G systems' mechanisms for receiving downlink signals. Therefore, how AIoT devices can utilize limited processing power and storage resources to receive downlink signals is a problem that needs to be solved.

[0009] To address at least one of the above-mentioned problems or other similar issues, embodiments of this application provide a signal transmission and reception method, apparatus, and system.

[0010] According to one aspect of the embodiments of this application, a signal transceiver method is provided, applied to a first device, wherein the first device communicates with a second device, the method comprising:

[0011] The first device receives a first signal sent by the second device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0012] The first device sends a second signal to the second device on the second resource;

[0013] Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0014] According to another aspect of the embodiments of this application, a signal transceiver is provided, configured in a first device, wherein the first device and a second device communicate with each other, the device comprising:

[0015] A receiving unit receives a first signal sent by the second device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0016] A transmitting unit that transmits a second signal to the second device on a second resource;

[0017] Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0018] According to another aspect of the embodiments of this application, a signal transceiver method is provided, applied to a second device, the second device communicating with a first device, the method comprising:

[0019] The second device sends a first signal to the first device on the first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0020] The second device receives a second signal sent by the first device on the second resource;

[0021] Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0022] According to another aspect of the embodiments of this application, a signal transceiver is provided, configured in a second device, the second device communicating with a first device, the device comprising:

[0023] A transmitting unit transmits a first signal to the first device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information transmitted by the second device, and the second information is at least data information transmitted by the second device.

[0024] A receiving unit that receives a second signal sent by the first device on a second resource;

[0025] Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0026] According to another aspect of the embodiments of this application, a communication system is provided, including the first device and the second device of the foregoing embodiments.

[0027] One of the beneficial effects of the embodiments of this application is that it can effectively utilize the limited processing power of the tag-type terminal device (first device) to receive downlink signals (first signals). In addition, while ensuring a certain receiving performance, it can save storage resources of the tag-type terminal device.

[0028] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0029] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0030] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0031] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0032] Figure 1 is a schematic diagram of a communication system according to an embodiment of this application;

[0033] Figure 2 is another schematic diagram of the communication system according to an embodiment of this application;

[0034] Figure 3 is another schematic diagram of the communication system according to an embodiment of this application;

[0035] Figure 4 is a schematic diagram of a signal transmission and reception method according to an embodiment of this application;

[0036] Figure 5 is a schematic diagram of some examples of the first signal;

[0037] Figure 6 is a schematic diagram of some other examples of the first signal;

[0038] Figure 7 is a schematic diagram of an example of the first signal including the third information and the first information;

[0039] Figure 8 is a schematic diagram of an example where the first signal includes the third information and the second information;

[0040] Figure 9 is a schematic diagram of two examples of the first signal including third information, first information and second information;

[0041] Figure 10 is a schematic diagram of an example where the first signal only includes the first information;

[0042] Figure 11 is a schematic diagram of an example where the first signal only includes the second information;

[0043] Figure 12 is a schematic diagram of an example of a first signal including first information and second information;

[0044] Figure 13 is a schematic diagram of a signal transmission and reception method according to an embodiment of this application;

[0045] Figure 14 is a schematic diagram of a signal transceiver device according to an embodiment of this application;

[0046] Figure 15 is another schematic diagram of a signal transceiver device according to an embodiment of this application;

[0047] Figure 16 is a schematic diagram of information interaction between the first device and the second device according to an embodiment of this application;

[0048] Figure 17 is a schematic diagram of a terminal device according to an embodiment of this application;

[0049] Figure 18 is a schematic diagram of a network device according to an embodiment of this application. Detailed Implementation

[0050] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0051] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0052] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0053] In the embodiments of this application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), Ambient IoT, etc.

[0054] Furthermore, communication between devices in a communication system can be carried out according to communication protocols at any stage, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and / or other currently known or future communication protocols.

[0055] In this application embodiment, the term "network device" refers, for example, to a device in a communication system that connects a terminal device to a communication network and provides services to that terminal device. Network devices may include, but are not limited to, devices such as: base stations (BS), access points (AP), transmission reception points (TRP), broadcast transmitters, mobile management entities (MME), gateways, servers, radio network controllers (RNC), base station controllers (BSC), etc. Furthermore, network devices may also include readers or interrogators used for AIoT, but this application is not limited to these devices.

[0056] In the above embodiments, base stations may include, but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base stations (gNB), IAB hosts (Donor), etc. They may also include Remote Radio Heads (RRHs), Remote Radio Units (RRUs), relays, or low-power nodes (e.g., femeto, pico, etc.), readers, or interrogators. The term "base station" can include some or all of their functions, and each base station can provide communication coverage to a specific geographical area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0057] In the embodiments of this application, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer, for example, to a device that accesses a communication network and receives network services through a network device. A terminal device can be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), tag, etc.

[0058] In the above embodiments, the terminal device may include, but is not limited to, the following devices: cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, machine communication device, laptop computer, cordless phone, smartphone, smartwatch, digital camera, tag, device attached to or related to an item (e.g., for item management), etc.

[0059] For example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, including but not limited to: machine-type communication (MTC) terminals, vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, ambient IoT devices, etc.

[0060] Furthermore, the terms "network side" or "network equipment side" refer to one side of the network, which can be a base station or include one or more network devices as described above. The terms "user side," "terminal side," or "terminal equipment side" refer to the side of the user or terminal, which can be a UE or include one or more terminal devices as described above. Unless otherwise specified, "equipment" can refer to either network equipment or terminal equipment.

[0061] It's important to note that RFID systems are solutions designed for a large number of low-cost IoT terminal devices. RFID systems have a wide range of applications. Their advantages include low tag cost and affordability. The small size of RFID tags reduces restrictions on the size and material of the items they can be used with, making them easy to apply to various item management and tracking scenarios. While RFID tags are inexpensive, the deployment and usage costs of RFID systems are higher than those of wide-area commercial networks. In terms of deployment, RFID systems are typically deployed locally, using dedicated networks, making it difficult to effectively distribute deployment costs. In terms of usage, if manual handheld tag readers are used, labor costs may become the main expense and are difficult to reduce; using dedicated RFID ports or gateways for reading and management significantly increases deployment costs. Furthermore, the simple logical architecture of RFID systems and loose wireless resource management, such as the difficulty in effectively coordinating interference in radio wave transmission, generally result in lower system capacity and spectrum utilization efficiency.

[0062] Compared to existing RFID systems, leveraging existing commercial mobile cellular networks (such as LTE and 5G NR systems) to support industry applications requiring tag-based IoT devices can effectively reduce deployment costs, thereby lowering the barrier to entry for this type of IoT device deployment. Furthermore, existing commercial mobile cellular networks (such as LTE and 5G NR systems) offer significantly better network security and wireless resource management than existing RFID systems. Taking 5G systems as an example, 5G can provide high-security authentication, network coordination, and accurate and stable terminal device management mechanisms, effectively reducing labor costs and thus lowering the overall cost of using this type of IoT. It can also optimize the network to improve system capacity and spectrum utilization efficiency. This reduction in deployment and usage costs can effectively promote the application of tag-based IoT devices in business management and industrial manufacturing, accelerate the digitalization process of related industries, improve production efficiency, and ultimately contribute more effectively to social development.

[0063] As a new type of IoT terminal in 5G systems, tagged IoT devices are severely constrained by cost. Their hardware capabilities are significantly weaker than traditional terminal devices, such as smartphones and other IoT devices supported by existing cellular mobile communication systems. For example, tagged IoT devices have extremely limited processing power and storage resources, and the mechanisms in existing 5G systems for receiving downlink known information cannot be reused. How tagged IoT devices can utilize limited processing power and storage resources to receive downlink known information is a problem that needs to be solved.

[0064] The following examples illustrate the scenarios of embodiments of this application, but this application is not limited thereto.

[0065] Figure 1 is a schematic diagram of a communication system according to an embodiment of this application, Figure 2 is another schematic diagram of a communication system according to an embodiment of this application, and Figure 3 is yet another schematic diagram of a communication system according to an embodiment of this application. Figures 1 to 3 schematically illustrate the situation using terminal devices and network devices as examples.

[0066] As shown in Figure 1, network devices can communicate directly with AIoT devices, sending signals directly to or receiving signals directly from AIoT devices. As shown in Figure 2, network devices can also use intermediate nodes to send signals to or receive signals from AIoT devices. As shown in Figure 3, network devices can also send signals to or receive signals from AIoT devices with the assistance of assisting nodes.

[0067] In the above examples, intermediate nodes can be terminal devices, UEs, or network nodes, such as relays, IAB nodes, repeaters, etc., and this application is not limited to these. Intermediate nodes have the function of communicating with the network devices in Figure 2, and at least have the ability to send signals to and / or receive signals from AIoT devices. Auxiliary nodes can be terminal devices, UEs, or network nodes, such as relays, IAB nodes, repeaters, etc., and this application is not limited to these. Auxiliary nodes have the function of communicating with the network devices in Figure 3, and at least have the ability to send signals to and / or receive signals from AIoT devices. The signals sent to and received from AIoT devices as described here conform to the specifications and descriptions of AIoT devices in communication standard protocols.

[0068] In the embodiments of this application, the network device sending signals / information / configurations to the AIoT device, or the AIoT device receiving signals / information / configurations from the network device, can be done in several ways: the network device directly sends the signal to the AIoT device, which then receives it; the network device sends the signal to the AIoT device via an intermediate node, which then receives it; the network device sends the signal to the AIoT device with the assistance of an auxiliary node, which then receives it; or the network device sends the signal to the AIoT device through other methods, which then receives it. Unless otherwise specified, this application is not limited to these methods.

[0069] In the embodiments of this application, the AIoT device sending signals / information to the network device or the network device receiving signals / information from the AIoT device can be done in various ways: the AIoT device sends the signal and the network device receives it directly; the AIoT device sends the signal and the network device receives it via an intermediate node; the AIoT device sends the signal and the network device receives it with the help of an auxiliary node; or the AIoT device sends the signal and the network device receives it through other methods. Unless otherwise specified, this application is not limited to these methods.

[0070] In this embodiment, the tag-type terminal device receives downlink signals sent by the network device. These downlink signals can carry at least data information and control information. The control information is used by the terminal device to control or instruct the reception of downlink signals and / or control, schedule, or trigger the transmission of uplink signals. Ordinary NR terminal devices have sufficient processing power and storage resources to receive control information using relatively complex algorithms, such as blind detection. However, due to limitations in the complexity, cost, and power consumption of tag-type terminal devices, determining where and when to receive downlink signals while reducing the demand for processing power and storage resources and maintaining a certain level of performance remains a challenge.

[0071] This application is made to address at least one of the above-mentioned problems or other similar problems. The embodiments of this application will be described below with reference to the accompanying drawings and specific implementation methods.

[0072] In the embodiments of this application, unless otherwise specified, expressions such as "in the case of," "if," and "when" have the same meaning and can be interchanged; the tag-type terminal device is also called "first device" or "terminal device," and the network device is also called "second device." It can be the network device in the examples of Figures 1 to 3, the intermediate node in the example of Figure 2, or the auxiliary node in the example of Figure 3. For example, it can be a reader or interrogator, etc.

[0073] In the embodiments of this application, uplink / downlink signal transmission and reception can be performed between the first device and the second device. Downlink can also be an R2D link (reader-to-device link) or an R2T link (reader-to-tag link), etc., while uplink can also be a D2R link (device-to-reader link) or a T2R link (tag-to-reader link), etc. This application is not limited to these.

[0074] First aspect of the embodiments

[0075] This application provides a signal transmission and reception method, which will be described from the perspective of a first device.

[0076] Figure 4 is a schematic diagram of a signal transmission and reception method according to an embodiment of this application. As shown in Figure 4, the method includes:

[0077] 410: A first device receives a first signal sent by a second device on a first resource, the first signal carrying at least first information and / or second information, the first information being at least control information sent by the second device, and the second information being at least data information sent by the second device;

[0078] 420: The first device sends a second signal to the second device on the second resource;

[0079] In the embodiments of this application, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0080] It is worth noting that Figure 4 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 4 above.

[0081] In the embodiments of this application, the first device is, for example, a tag-type terminal device in the scenarios shown in Figures 1 to 3, which may be referred to as other devices, such as terminal devices or IoT devices; the second device is, for example, a network device in the scenarios shown in Figures 1 to 3, an intermediate node in the scenario shown in Figure 2, or an auxiliary node in the scenario shown in Figure 3, which may also be referred to as other devices. For ease of explanation, this application uses a tag-type terminal device as the first device and a network device as the second device as an example for description.

[0082] In the embodiments of this application, unless otherwise specified, the first signal refers to the downlink signal, the first resource refers to the downlink resource, the second signal refers to the uplink signal, and the second resource refers to the uplink resource.

[0083] According to the above embodiments, the limited processing power of tag-type terminal devices can be effectively utilized to receive downlink signals (first signals). Furthermore, while ensuring a certain level of reception performance, storage resources of tag-type terminal devices can be saved.

[0084] In this embodiment, the first device can transmit a second signal on a second resource by backscattering a first waveform. The first waveform originates from the second device or a third-party device controlled by the second device, and the first device transmits an uplink signal or information by backscattering the first waveform. For example, the first device modulates the signal or information to be sent to the second device onto the first waveform by adjusting its backscattering circuit, and then backscatters the modulated first waveform.

[0085] In the above embodiments, the first waveform can be a continuous waveform (CW), a carrier waveform (CW), a backscattered / backscattering waveform, an uplink waveform, etc., and this application is not limited thereto.

[0086] In the above embodiments, the first waveform can be a single-frequency signal waveform with constant envelope, or it can be a multi-frequency signal waveform. Furthermore, the first waveform can be continuous or discontinuous on the time axis.

[0087] In this embodiment, the first device can transmit a second signal on a second resource using a carrier signal it generates itself. For example, the first device modulates the signal or information intended for transmission to the second device onto a carrier signal and then transmits the modulated signal. The carrier signal can be a single-frequency signal waveform with a constant envelope, or it can be a multi-frequency signal waveform. Furthermore, the carrier signal can be continuous or discontinuous on the time axis.

[0088] In this embodiment, the first signal is a signal and / or information sent from the second device to the first device. It can be used to carry scheduling information, control information, or triggering information for uplink signal or information transmission, and is referred to as first information. Furthermore, the first signal can also be used to carry indication information, control information, or triggering information for downlink signal or information reception, also referred to as first information. Additionally, the first signal can also be used to carry data information sent from the second device to the first device, referred to as second information. The second signal is a signal and / or information sent from the first device to the first device.

[0089] In the above embodiments, the time-domain and / or frequency-domain resources used to carry the first signal transmitted by the second device are referred to as the first resource; the time-domain and / or frequency-domain resources used to carry the second signal transmitted by the second device are referred to as the second resource. In the embodiments of this application, the first resource and the second resource can be distributed at different positions on the time axis, or in other words, one or more first resources and / or second resources are distributed on the time axis in a TDM (time-division multiplexing) manner.

[0090] In this embodiment of the application, the first information is at least control, scheduling, or instruction information, commands, or signaling sent by the second device to the first device. It can be used to schedule, control, or trigger the first device to send the aforementioned second signal, or to instruct or control the first device to receive downlink data (e.g., the second information).

[0091] In the above embodiments, the first information can be carried in the control signaling of Layer 1. For example, the second device sends the first information to the first device through the control channel and / or data channel of Layer 1; or, the first information can be carried in the control signaling of a higher layer, such as in MAC CE. For example, the second device can send the first information to the first device in the form of a service or protocol data unit or sub-unit.

[0092] In some possible implementations, a MAC layer service or protocol data unit may include more than one service or protocol data sub-unit. The position of the service or protocol data sub-unit related to the first information (i.e., the service or protocol data sub-unit used to carry the first information) within a service or protocol data unit may be fixed, at least determined by a predefined method. This application is not limited to this; the aforementioned position may also be non-fixed, at least determined by the header or subheader carrying other information (such as the third information described later).

[0093] In the above implementation, the business or protocol data sub-unit related to the first information may be located before or after the business or protocol data sub-unit related to the second information (i.e., the business or protocol data sub-unit used to carry the second information); or, it may be located at any position at the beginning, end, or middle of a business or protocol data unit.

[0094] In some other possible implementations, a MAC layer service or protocol data unit includes one or more service or protocol data sub-units related to the first information (i.e., service or protocol data sub-units used to carry the first information) and / or service or protocol data sub-units related to the second information (i.e., service or protocol data sub-units used to carry the second information), and a service or protocol data sub-unit (related to the first information or related to the second information) contains at least one header or subheader related to the third information.

[0095] In the above implementation, one or more headers or subheaders can be located at the beginning, end, or any middle position of a business or protocol data unit; or, a header or subheader can be located before its corresponding first or second information.

[0096] In the above embodiments, the first information may include various types of control signaling. For example, the first information is used to control the terminal device to receive a first signal, or the first information is used to schedule the terminal device to send a second signal. For another example, the first information is used to indicate a first resource for receiving the first signal and / or a second resource for sending the second signal, or to indicate parameters for receiving the first signal and / or sending the second signal, such as coding and modulation methods.

[0097] In the above embodiments, the length and / or format of the first information can be fixed or variable; if it is fixed, the length and / or format of the first information can be determined, for example, by a predefined method; if it is variable, the length and / or format of the first information can be determined, for example, by other information (e.g., the third information described later).

[0098] In this embodiment of the application, the second information is at least the data sent by the second device to the first device, which can be used to trigger the first device to send the aforementioned second signal.

[0099] In the above embodiments, the second information may be carried in a MAC layer service or protocol data unit or a service or protocol data sub-unit. The second device may send the second information to the first device through a layer 1 data channel, and / or the second device may send the second information to the first device in the form of a service or protocol data unit or sub-unit.

[0100] In some embodiments of this application, the first information corresponds at least one-to-one with the first signal, that is, one first signal carries one first information, and one first information corresponds to one first signal.

[0101] In the above embodiments, the first signal may also carry other information, such as the aforementioned second information, the third information described later, and so on.

[0102] In the above embodiments, the start position and / or end position and / or duration of the first resource carrying the first information in the time domain can be fixed, at least determined by a predefined method, and the first device can receive the first information sent by the second device on the predefined first resource.

[0103] In the above embodiments, on the timeline, the first resource carrying the first information can be located before the first resource carrying the second information, that is, the first information comes first and the second information comes later. There may be no time interval between the first resource carrying the first information and the first resource carrying the second information, meaning they are continuous, or there may be a time interval, such as a first time interval between them. This first time interval can be configured by the second device or predefined, for example, predefined in a standard.

[0104] In some possible implementations, the first time is not less than the time required for the first device to process the first information.

[0105] Figure 5 is a schematic diagram of some examples of the first signal. In the examples of Figure 5, the first signal includes first information and second information, and the first information corresponds one-to-one with the second information and / or the second signal.

[0106] As shown in Figure 5, a first piece of information can correspond to a second piece of information, as shown in Figure 5(a). A first piece of information can also correspond to a second signal, as shown in Figure 5(b). A first piece of information can also correspond to a second piece of information and a second signal, as shown in Figure 5(c).

[0107] In the examples above, the format and length of the first information can be fixed, for example, the format and length of the first information are predefined by the standard. For example, the first information includes more than one information element, and the format and length of that information element are predefined by the standard.

[0108] In the examples above, the first information can be carried in layer 1 control signaling. The location of the first resource carrying the first information in the time domain can be fixed, for example, at the beginning of the first signal, or before the first resource carrying the second information, etc.

[0109] The standard can predefine the time-domain location of a first resource carrying first information. A first device can receive the first information on this predefined first resource according to a predefined format. Furthermore, the first device can decode and parse the first information at layer 1 to obtain parameters for receiving corresponding second information, and then receive the subsequent second information based on these parameters. And / or, after obtaining parameters for transmitting a second signal, the first device can transmit the second signal based on these parameters.

[0110] Figure 6 is a schematic diagram of some other examples of the first signal. In the examples of Figure 6, a first time interval T is between the first resource carrying the first information and the first resource carrying the second information.

[0111] As shown in Figure 6, the first device receives the first information in a predefined format on the first resource carrying the first information. After decoding and parsing the first information at layer 1 to obtain the parameters for receiving the corresponding second information, it receives the second information on the first resource after the first time T.

[0112] By using the above method, the first device does not need to store the first signal when decoding and parsing the first information, thereby saving storage resources.

[0113] In the above example, the first time T, i.e., the aforementioned time interval, can carry the first information. This application is not limited to this; the aforementioned time interval can also be a standard predefined one. Furthermore, the aforementioned time interval is not less than the time required for the first device to process the first information. This ensures the successful decoding of the first information and the correct reception of the second information.

[0114] In the above embodiments, the first information and the second information can be carried in MAC layer service or protocol data units or sub-units, wherein the first information is higher layer control signaling, such as MAC CE, and the second information is higher layer data, such as MAC SDU.

[0115] In some possible implementations, a MAC layer service or protocol data unit may contain more than one service or protocol data sub-unit. The position of the service or protocol data sub-unit related to the first information within a data unit is fixed; for example, it may be located at the beginning, end, or middle of the data unit, or before or after the service or protocol data sub-unit related to the second information. The standard may predefine the position of the service or protocol data sub-unit related to the first information within a service or protocol data unit. This application does not restrict how the service or protocol data units are mapped and transmitted on the first resource; for example, they can be mapped and transmitted starting from the least significant bit or the most significant bit.

[0116] In some other possible implementations, a first time interval T is maintained between the service or protocol data sub-unit related to the first information used to control the reception of the second information and the service or protocol data sub-unit related to the second information. For example, the two service or protocol data sub-units are transmitted via different first signals, and the first resource used to carry the two first signals is spaced apart by the first time interval T. The first device receives the first signal, decodes it at layer 1, and submits it to a higher layer. After parsing the first information according to a predefined position and obtaining the parameters for receiving the corresponding second information, it receives the second information after the first time interval T based on the parameters; and / or after obtaining the parameters for sending the second signal, it sends the second signal based on the parameters.

[0117] In some embodiments, the first information is optional. The first device can receive the first signal (e.g., the second information) and / or send the second signal using predefined parameters. Alternatively, the first device can receive the first signal (e.g., the second information) and / or send the second signal using the original parameters without needing to use updated parameters.

[0118] In the above embodiments, the first device receives the second information through predefined parameters or the original parameters, without needing the first information. However, since the first resource or sub-unit carrying the first information is predefined, the second device may send padding bits on the first resource corresponding to the first information or on the service or protocol data sub-unit related to the first information. The padding bits may be all 0s, all 1s, or any bit sequence, and this application does not impose any restrictions on this. Alternatively, the second device may not send the first information, the first device may not receive the first signal on the first resource corresponding to the first information, or the first device may not decode or parse the first signal on the first resource corresponding to the first information, or the first device may not receive the service or protocol data sub-unit corresponding to the first information, or the first device may not parse the first information.

[0119] Using the above method, the first device does not need to expend energy to receive these padding bits, thereby saving the energy consumed by the first device in receiving the first signal.

[0120] In some other embodiments of this application, the first device receiving the first signal further includes the first device determining, based on third information and / or the first sub-signal, that the first signal contains first information.

[0121] In the above embodiments, the third information is at least used to indicate whether the first signal includes the first information; and / or to indicate the transmission format of the first signal, so as to indirectly indicate whether the first signal includes the first information; and / or to indicate whether the higher layer (MAC layer) service or protocol data unit or sub-unit carries or contains the first information, so as to indirectly indicate whether the first signal includes the first information.

[0122] For example, the third information can be 1 bit, used to identify whether the first signal contains the first information. For instance, a "0" indicates that the first signal does not contain the first information, a "1" indicates that the first signal contains the first information, and vice versa. This application does not impose any limitations on this. As another example, the third information can be 2 bits, used to identify the transmission format of the first signal. For instance, "00" indicates that the first signal includes both the third and first information, "01" indicates that the first signal includes both the third and second information, and "10" indicates that the first signal includes the third, first, and second information. These are merely illustrative examples, and this application does not intend to limit the scope of the application.

[0123] In the above embodiments, the start position and / or end position and / or duration of the first resource carrying the third information (i.e., the first resource used to send the third information) in the time domain can be fixed, or determined at least by a predefined method, but this application is not limited thereto.

[0124] In the above embodiments, the first resource carrying the third information (i.e., the first resource used to send the third information) may be located before the first resource carrying the first information and / or the second information (i.e., the first resource used to send the first information and / or the second information), or the third information may be carried in the header or sub-header of the service or protocol data unit or sub-unit related to the first information and / or the second information (i.e., the service or protocol data unit or sub-unit carrying the first information and / or the second information). Specific implementation methods will be described later.

[0125] In the above embodiments, the third information may also indicate the length of the first information (when the length of the first information is variable) and / or the type of the first information (when the first information has multiple types).

[0126] For example, the length of the first information is variable or not fixed, and the length of the first information is indicated by the third information, such as the number of bits, symbols, chips, duration, etc.

[0127] For example, the first information may contain various types of control signaling, such as controlling the first device to receive a signal, or scheduling the first device to send a second signal; or the first information may be used to indicate a first resource for receiving the first signal and / or a second resource for sending the second signal, or the first information may be used to indicate parameters for receiving the first information and / or sending the second signal, such as encoding adjustment methods, etc.

[0128] In the above embodiments, the format and / or length of the third information can be fixed; for example, the standard predefines the format and / or length of the third information. For example, the third information includes more than one information element, and the standard predefines the format and / or length of that information element.

[0129] In the above embodiments, the third information may be carried in the control signaling of Layer 1, and the second device may send the third information to the first device through the control channel and / or data channel of Layer 1; or, the third information may be carried in the control signaling of a higher layer, and the second device may send the third information to the first device in the form of a service or protocol data unit or sub-unit; or, the third information may also be carried in the header or sub-header of a service or protocol data sub-unit related to the first information and / or the second information.

[0130] In the above embodiments, the first signal carries at least third information as well as first information and / or second information; that is, the third information can correspond one-to-one with the first information and / or the second information. For example, the first signal includes third information and first information, with one piece of third information corresponding to one piece of first information; as another example, the first signal includes third information and second information, with one piece of third information corresponding to one piece of second information; as yet another example, the first signal includes third information, first information, and second information, with one piece of third information corresponding to one piece of first information and one piece of second information.

[0131] Figure 7 is a schematic diagram of an example where the first signal includes the third information and the first information. In the example in Figure 7, the third information and the first information correspond one-to-one.

[0132] As shown in Figure 7, a first device receives a first signal, which includes third information and first information. The first device determines whether the first signal contains the first information or determines the transmission format of the first signal by receiving the third information. The third information and the first information correspond one-to-one. The first resource carrying the third information is located before the first resource carrying the first information. The position of the first resource carrying the third information is fixed, such as at the beginning of the first signal or before the first resource carrying the first information. The standard can predefine the position of the first resource carrying the third information in the time domain. Furthermore, the format and / or length of the third information can be fixed; the standard can predefine the format and / or length of the third information. The first device receives the third information on the predefined first resource carrying the third information, according to the predefined format and / or length, determines that the following first signal is the first information, receives the following first information, decodes and parses the first information, and obtains parameters for receiving subsequent first signals and / or sending second signals. Therefore, the first device can receive subsequent first signals and / or send second signals based on these parameters.

[0133] In the example above, the length of the first information can be fixed. The length of the first information can be predefined in the standard. For example, the number of bits, symbols, chips, duration, etc. of the first information can be predefined in the standard.

[0134] In the above example, the length of the first information can also be variable, and its length can be indicated by the third information. For example, the third information indicates the number of bits, symbols, chips, duration, etc. of the first information. The first device can determine the length of the first information based on the third information, and then receive the first information carried on the first signal. Thus, the first device can implicitly determine that the first signal contains the first information. For example, if the length of the first information is not 0, it indicates that the first signal contains the first information, thereby reducing the burden of control signaling.

[0135] In the above example, the first information may include various types of control signaling, the type of which can be indicated by the third information. The first device can determine the type of the first information based on the third information, and then receive the first information carried on the first signal. Thus, the first device can implicitly determine that the first signal contains the first information, and can also implicitly determine the length of the first information based on its type. For example, the standard predefines a one-to-one correspondence between the type and length of the first information. Once the type of the first information is determined, the length of the first information can be determined based on this correspondence.

[0136] Figure 8 is a schematic diagram of an example where the first signal includes third and second information. In the example in Figure 8, the third and second information correspond one-to-one.

[0137] As shown in Figure 8, the first device receives a first signal, which includes third information and second information. The first device determines whether the first signal contains the first information or determines the transmission format of the first signal by receiving the third information. The third information and the second information are in a one-to-one correspondence. The first resource carrying the third information is located before the first resource carrying the second information. The position of the first resource carrying the third information is fixed, such as at the beginning of the first signal or before the first resource carrying the second information. The standard can predefine the position of the first resource carrying the third information in the time domain. Furthermore, the format and / or length of the third information can be fixed; the standard can predefine the format and / or length of the third information. The first device receives the third information on the predefined first resource carrying the third information, according to the predefined format and / or length, determines that the following first signal is the second information, receives and decodes the second information, and passes the second information to the MAC layer for further parsing.

[0138] In the above example, the parameters required for the first device to receive the second information can be obtained from the first information carried by the first signal preceding the first signal in the time domain (located before the second information in the time domain), or they can be predefined. That is, the first device receives the second information through predefined parameters.

[0139] Figure 9 is a schematic diagram of two examples where the first signal includes third information, first information, and second information. In the examples in Figure 9, the third information corresponds one-to-one with the first and second information.

[0140] As shown in Figure 9, a first device receives a first signal, which includes third information, first information, and second information. The first device determines whether the first signal contains the first information or determines the transmission format of the first signal by receiving the third information. The third information corresponds one-to-one with the first and second information. The first resource carrying the third information is located before the first resource carrying the first information. The position of the first resource carrying the third information is fixed, such as at the beginning of the first signal or before the first resource carrying the first information. The standard can predefine the position of the first resource carrying the third information in the time domain. Furthermore, the format and / or length of the third information can be fixed, and the standard can predefine the format and / or length of the third information. The first device receives the third information on the predefined first resource carrying the third information, according to the predefined format and / or length, determines that the following first signal contains the first and second information, receives the first information following the third information, decodes and parses the first information to obtain parameters for receiving the second information, and accordingly receives the following second information or receives the second information after a first time interval T, and / or, after obtaining the parameters for sending the second signal, sends the second signal according to the parameters.

[0141] In the above example, the third information may also indicate the length and / or type of the first information, as shown in the example in Figure 7, which will not be repeated here.

[0142] The above provides examples illustrating specific implementation methods for determining that a first signal contains first information based on third information. The following provides examples illustrating specific implementation methods for determining that a first signal contains first information based on a first sub-signal.

[0143] In some embodiments, the first sub-signal is used at least to indicate whether the first signal includes the first information, and / or to indicate the transmission format of the first signal, so as to indirectly indicate whether the first information includes the first information.

[0144] For example, the first device receives a first signal sent by the second device, the first signal including first information and / or second information, the first device also receives a first sub-signal sent by the second device, and the first device determines whether the first signal contains the first information and / or determines the transmission format of the first signal by detecting the first sub-signal.

[0145] In the above embodiments, one first signal corresponds to at least one first sub-signal; that is, one first signal may correspond to one or more first sub-signals. Different first signals may correspond to different first sub-signals, and the first device may determine whether the first signal contains first information and / or determine the transmission format of the first signal by detecting the received first sub-signal.

[0146] For example, the second device sends different first sub-signals to the first device based on the information carried by the first signal. The first device determines whether the first signal contains first information and / or determines the transmission format of the first signal by detecting the different first sub-signals.

[0147] For example, the second device sends two different first sub-signals to the first device based on whether the first signal contains first information. The first signal containing first information corresponds to one type of first sub-signal, and the first signal not containing first information corresponds to another type of first sub-signal.

[0148] For example, the second device sends three different first sub-signals to the first device based on whether the first signal contains first information, second information, or both first and second information. The first signal containing first information corresponds to one type of first sub-signal, the first signal containing second information corresponds to another type of first sub-signal, and the first signal containing both first and second information corresponds to a third type of first sub-signal.

[0149] In the above embodiments, different first sub-signals can be identified by at least one of the following:

[0150] The pattern or waveform of the signal, such as the distribution of high and low levels of the signal over its duration, the proportion of high and low levels, etc.

[0151] A sequence of signals;

[0152] The duration of the signal.

[0153] In the above embodiments, the first sub-signal may be, for example, a preamble, midamble, or postamble of the first signal; or, the first sub-signal may be a guide signal or a reference signal for the first information and / or the second information.

[0154] In the above embodiments, the first resource carrying the first sub-signal can be located at the start position, end position, or any intermediate position of the first resource carrying the first signal.

[0155] In the above embodiments, the start position and / or end position and / or duration of the first resource carrying the first sub-signal in the time domain can be fixed, or at least determined in a predefined manner.

[0156] Figure 10 is a schematic diagram of an example where the first signal only includes the first information.

[0157] As shown in Figure 10, the first device receives a first signal, which includes first information. The first device also receives a first sub-signal sent by the second device, and the first sub-signal corresponds one-to-one with the first signal. The first device determines whether the first signal contains the first information or determines the transmission format of the first signal by receiving the first sub-signal. The first resource carrying the first sub-signal can be located at the beginning, end, or any intermediate position of the resource carrying the first signal.

[0158] In the above example, the first resource carrying the first sub-signal can be fixed; for example, the standard can predefine the first resource carrying the first sub-signal. The first device detects the first sub-signal on the first resource carrying the first sub-signal, determines that the first signal includes first information, and thus, the first device can receive the first information, decode and parse the first information, obtain parameters for receiving subsequent first signals and / or parameters for sending second signals, and receive subsequent first signals and / or send second signals according to the obtained parameters.

[0159] Figure 11 is a schematic diagram of an example where the first signal only includes the second information.

[0160] As shown in Figure 11, the first device detects the first sub-signal on the first resource carrying the first sub-signal, determines that the first signal includes second information, receives and decodes the second information, and transmits the second information to the MAC layer for further parsing.

[0161] Figure 12 is a schematic diagram of an example of a first signal including first information and second information.

[0162] As shown in Figure 12, the first device detects the first sub-signal on a first resource carrying the first sub-signal, and determines that the first signal includes first information, or determines that the first signal includes both first information and second information. The first device receives the first information, decodes and parses the first information, obtains parameters for receiving the second information, receives the second information following it or receives the second information after an interval of a first time T, and / or after obtaining parameters for sending the second signal, sends the second signal according to the parameters.

[0163] In some other embodiments of this application, the first device receives a first signal, the first signal including third information as well as first information and / or second information.

[0164] In the above embodiments, the third information, as well as the first information and / or the second information, are all located at a higher level.

[0165] For example, the first information and the second information are carried in the service or protocol data unit or sub-unit of the MAC layer. The first information is the control signaling of the higher layer, such as MAC CE, and the second information is the data of the higher layer, such as MAC SDU. The third information is carried at least in the header or sub-header of the data sub-unit related to the first information and / or the second information, and the third information corresponds one-to-one with the first information and / or the second information.

[0166] In the above embodiments, a MAC layer service or protocol data unit includes more than one service or protocol data sub-unit. The service or protocol data sub-unit related to the first information is located before or after the service or protocol data sub-unit related to the second information.

[0167] In some possible implementations, a first time interval T is maintained between the service or protocol data sub-unit related to the first information used to control the reception of the second information and the service or protocol data sub-unit related to the second information. For example, the two service or protocol data sub-units are transmitted via different first signals, and the first resource interval for carrying the two first signals is the first time interval T.

[0168] In the above embodiments, the third information is used at least to indicate whether the service or protocol data unit or sub-unit contains the first information. For example, the third information can identify whether the service or protocol data unit or sub-unit contains the first information by using 1 bit of information. If the bit is "0", it means that the first information is contained; if the bit is "1", it means that the first information is not contained, and vice versa. This application does not limit this.

[0169] In the above embodiments, the third information may also indicate the length and / or type of the first information. The specific implementation method has been described above and its content is incorporated here, and will not be repeated here.

[0170] In the above embodiments, in the service or protocol data unit or sub-unit, the third information may be located before the first information (such as MAC CE) and / or the second information (such as MAC SDU), as shown in Figures 7 to 9. The difference is that the first information corresponds to higher layer control signaling, such as MAC CE, the second information corresponds to higher layer data, such as MAC SDU, and the third information corresponds to the header or sub-header of the service or protocol data sub-unit of the MAC layer.

[0171] In the above embodiments, a service or protocol data unit may further include one or more service or protocol data sub-units related to the first information and / or service or protocol data sub-units related to the second information, wherein each service or protocol data sub-unit contains at least one header or sub-header related to the third information. The one or more headers or sub-headers may be located at the beginning, end, or any middle position of the service or protocol data unit. Alternatively, the header or sub-header may be located before its corresponding first or second information.

[0172] In some embodiments, the first information is optional. The first device may receive the second information and / or send the second signal by predefined parameters. Alternatively, the first device may not need to use updated parameters (e.g., use the original parameters) to receive the second information and / or send the second signal.

[0173] In the above embodiments, the second device may send padding bits in the first information. For example, the second device may send a header or subheader and padding bits on the service or protocol data subunit corresponding to the first information. The padding bits may be all 0s, all 1s, or any bit sequence, and this application does not impose any restrictions on this. Alternatively, the second device may not send the first information. For example, the second device may only send the header or subheader corresponding to the first information, or may not send the header or subheader at all. The first device may not receive the service or protocol data subunit corresponding to the first information, or may not parse the first information, thereby saving energy.

[0174] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0175] According to the above embodiments, the limited processing power of the tag-type terminal device (first device) can be effectively utilized to receive downlink signals (first signals). On the other hand, while ensuring a certain level of receiving performance, the storage resources of the tag-type terminal device are saved.

[0176] Second aspect of the embodiments

[0177] This application provides a signal transmission and reception method, described from the perspective of a second device. The second aspect of the embodiment can be implemented in conjunction with or separately from the first aspect of the embodiment; content identical to that in the first aspect of the embodiment will not be repeated.

[0178] Figure 13 is a schematic diagram of a signal transmission and reception method according to an embodiment of this application. As shown in Figure 13, the method includes:

[0179] 1310: The second device sends a first signal to the first device on the first resource, the first signal carrying at least first information and / or second information, the first information being at least control information sent by the second device, and the second information being at least data information sent by the second device;

[0180] 1320: The second device receives a second signal sent by the first device on the second resource.

[0181] In the embodiments of this application, the first information is used at least to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0182] It is worth noting that Figure 13 above is only an illustrative description of the embodiments of this application, but this application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and other operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description in Figure 13 above.

[0183] In some embodiments, the first signal further includes third information and / or a first sub-signal, and the first device can determine that the first signal includes the first information based on the third information and / or the first sub-signal.

[0184] In the embodiments of this application, the implementation methods of the first information, the second information, the third information, the first signal, the second signal, and the first sub-signal have been described in the embodiments of the first aspect, and their contents are incorporated herein by reference and will not be repeated here.

[0185] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0186] According to the above embodiments, the limited processing power of the tag-type terminal device (first device) can be effectively utilized to receive downlink signals (first signals). On the other hand, while ensuring a certain level of receiving performance, the storage resources of the tag-type terminal device are saved.

[0187] Third aspect of the embodiments

[0188] This application provides a signal transceiver device. This device may be, for example, a tag-type terminal device (referred to as the first device), or one or more components or parts configured on the tag-type terminal device. Contents identical to those in the first and second aspects of the embodiments will not be repeated.

[0189] Figure 14 is a schematic diagram of a signal transceiver device according to an embodiment of the present application. As shown in Figure 14, the signal transceiver device 1400 according to an embodiment of the present application includes a receiving unit 1410 and a transmitting unit 1420.

[0190] In this embodiment of the application, the receiving unit 1410 receives a first signal sent by the second device on the first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device. The sending unit 1420 sends a second signal to the second device on the second resource.

[0191] In the embodiments of this application, the first information is used at least to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0192] In some embodiments, the first information corresponds at least one-to-one with the first signal.

[0193] In the above embodiments, the start position and / or end position and / or duration of the first resource carrying the first information in the time domain can be fixed, at least determined by a predefined method; the receiving unit 1410 receives the first information sent by the second device on the predefined first resource.

[0194] In the above embodiments, on the timeline, the first resource carrying the first information can be located before the first resource carrying the second information.

[0195] In the above embodiments, a first time interval may be established between the first resource carrying the first information and the first resource carrying the second information. This first time interval is configured by the second device or is predefined.

[0196] In the above embodiments, the first time may not be less than the time required for the first device to process the first information.

[0197] In some embodiments, the first information is at least carried in the control signaling of Layer 1, and the second device sends the first information to the first device through the control channel and / or data channel of Layer 1; or, the first information is at least carried in the control signaling of a higher layer, and the second device sends the first information to the first device in the form of a service or protocol data unit or a service or protocol data subunit.

[0198] In the above embodiments, in some possible implementations, a MAC layer service or protocol data unit may include more than one service or protocol data sub-unit; wherein, the position of the service or protocol data sub-unit related to the first information in a service or protocol data unit may be fixed, at least determined by a predefined method; this application is not limited thereto, the position of the service or protocol data sub-unit related to the first information in a service or protocol data unit may also be non-fixed, at least determined by the header or subheader carrying the third information.

[0199] In the above implementation, the business or protocol data sub-unit related to the first information may be located before or after the business or protocol data sub-unit related to the second information; or, it may be located at any position at the beginning, end, or middle of a business or protocol data unit.

[0200] In the above embodiments, in some other possible implementations, a MAC layer service or protocol data unit includes one or more service or protocol data sub-units related to the first information and / or service or protocol data sub-units related to the second information, and a service or protocol data sub-unit contains at least one header or subheader related to the third information.

[0201] In the above implementation, one or more headers or subheaders can be located at the beginning, end, or any middle position of a business or protocol data unit; or, a header or subheader can be located before its corresponding first or second information.

[0202] In some embodiments, the first information includes multiple types of control signaling.

[0203] In some embodiments, the length and / or format of the first information is fixed, at least determined by a predefined method; or, the length and / or format of the first information is variable, at least determined by the third information.

[0204] In some embodiments, the second information is at least carried in a MAC layer service or protocol data unit or service or protocol data sub-unit, and the second device sends the second information to the first device through a layer 1 data channel, and / or the second device sends the second information to the first device in the form of a service or protocol data unit or service or protocol data sub-unit.

[0205] In some embodiments, the second information is used to trigger the first device to send a second signal.

[0206] In some embodiments, the transmitting unit 1420 receives the second information and / or transmits the second signal using predefined parameters, or the receiving unit 1410 uses the original parameters to receive the second information and / or the transmitting unit 1420 uses the original parameters to transmit the second signal.

[0207] In some embodiments, as shown in FIG14, the device 1400 further includes a processing unit 1430.

[0208] In the above embodiments, the processing unit 1430 determines that the first signal contains the first information based on the third information and / or the first sub-signal carried on the first signal.

[0209] In some embodiments, the aforementioned third information is used at least to indicate whether the first signal includes the first information, and / or to indicate the transmission format of the first signal, and / or to indicate whether a higher-layer service or protocol data unit or sub-unit carries or contains the first information.

[0210] In the above embodiments, the third information can correspond one-to-one with the first information and / or the second information.

[0211] In the above embodiments, the start position and / or end position and / or duration of the first resource carrying the third information in the time domain can be fixed, at least determined in a predefined manner.

[0212] In the above embodiments, the first resource carrying the third information may be located before the first resource carrying the first information and / or the second information; or, the third information may be carried in the header or subheader of a service or protocol data unit or a service or protocol data subunit related to the first information and / or the second information.

[0213] In the above embodiments, the format and / or length of the third information can be fixed; for example, the standard predefines the format and / or length of the third information. For instance, the third information may include more than one information element, and the standard predefines the format and / or length of that information element.

[0214] In the above embodiments, the third information may also indicate the length of the first information and / or the type of the first information.

[0215] In the above embodiments, the third information may be carried at least in the control signaling of Layer 1, and the second device sends the third information to the first device through the control channel and / or data channel of Layer 1; or, the third information may be carried at least in the control signaling of a higher layer, and the second device sends the third information to the first device in the form of a service or protocol data unit or a service or protocol data subunit; or, the third information may be carried at least in the header or subheader of a service or protocol data subunit related to the first information and / or the second information.

[0216] In some embodiments, the first sub-signal is used at least to indicate whether the first signal includes first information, and / or to indicate the transmission format of the first signal.

[0217] In the above embodiments, a first signal may correspond to at least one first sub-signal.

[0218] In the above embodiments, the first sub-signal may be at least a preamble, middle chord, or postamble of the first signal, or the first sub-signal may be a guiding signal or reference signal for the first information and / or the second information.

[0219] In the above embodiments, different first signals may correspond to different first sub-signals; the processing unit 1430 determines whether the first signal contains the first information and / or determines the transmission format of the first signal by detecting the first sub-signal received by the receiving unit 1410.

[0220] In the above embodiments, different first sub-signals can be identified by at least one of the following:

[0221] The pattern or waveform of the signal;

[0222] A sequence of signals;

[0223] The duration of the signal.

[0224] In the above embodiments, the first resource carrying the first sub-signal can be located at the start position, end position, or any intermediate position of the first resource carrying the first signal; the start position and / or end position and / or duration of the first resource carrying the first sub-signal in the time domain can be fixed, at least determined by a predefined method.

[0225] In this embodiment, the processing unit 1430 also controls the operation of the receiving unit 1410 and the sending unit 1420, but this application is not limited thereto.

[0226] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0227] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The signal transceiver 1400 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0228] Furthermore, for simplicity, Figure 14 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0229] According to the above embodiments, the limited processing power of the tag-type terminal device (first device) can be effectively utilized to receive downlink signals (first signals). On the other hand, while ensuring a certain level of receiving performance, the storage resources of the tag-type terminal device are saved.

[0230] Fourth aspect of the embodiment

[0231] This application provides a signal transceiver device. This device may be, for example, a network device, an intermediate node, or an auxiliary node, referred to as a second device, or it may be one or more components or parts configured in a network device, intermediate node, or auxiliary node. Contents identical to those in the embodiments of the first to third aspects will not be repeated.

[0232] Figure 15 is another schematic diagram of a signal transceiver device according to an embodiment of this application. As shown in Figure 15, the signal transceiver device 1500 includes a transmitting unit 1510 and a receiving unit 1520.

[0233] In this embodiment, the sending unit 1510 sends a first signal to the first device on the first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device. The receiving unit 1520 receives the second signal sent by the first device on the second resource.

[0234] In the embodiments of this application, the first information is used at least to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0235] In some embodiments, as described above, the first information is at least carried in the control signaling of Layer 1, and the sending unit 1510 sends the first information to the first device through the control channel and / or data channel of Layer 1; or, the first information is at least carried in the control signaling of the higher layer, and the sending unit 1510 sends the first information to the first device in the form of a service or protocol data unit or a service or protocol data subunit.

[0236] In some embodiments, as described above, the second information is at least carried in a MAC layer service or protocol data unit or service or protocol data sub-unit, and the sending unit 1510 sends the second information to the first device through the layer 1 data channel, and / or the sending unit 1510 sends the second information to the first device in the form of a service or protocol data unit or service or protocol data sub-unit.

[0237] In some embodiments, as described above, the third information may be carried at least in the control signaling of Layer 1, and the sending unit 1510 sends the third information to the first device through the control channel and / or data channel of Layer 1; or, the third information may be carried at least in the control signaling of a higher layer, and the sending unit 1510 sends the third information to the first device in the form of a service or protocol data unit or a service or protocol data subunit; or, the third information may be carried at least in the header or subheader of a service or protocol data subunit related to the first information and / or the second information.

[0238] In some embodiments, as shown in FIG15, the device 1500 further includes a processing unit 1530, which is used to generate the first signal described above and / or control the operation of the transmitting unit 1510 and the receiving unit 1520, but this application is not limited thereto.

[0239] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0240] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The signal transceiver 1500 may also include other components or modules, and for details regarding these components or modules, please refer to relevant technologies.

[0241] Furthermore, for simplicity, Figure 15 only illustrates the connection relationships or signal flow between the various components or modules, but those skilled in the art should understand that various related technologies such as bus connections can be used. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not limit this implementation.

[0242] According to the above embodiments, the limited processing power of the tag-type terminal device (first device) can be effectively utilized to receive downlink signals (first signals). On the other hand, while ensuring a certain level of receiving performance, the storage resources of the tag-type terminal device are saved.

[0243] Fifth aspect of the embodiment

[0244] This application also provides a communication system, which can be referred to in Figures 1 to 3. The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

[0245] In some embodiments, the communication system 100 may include at least a first device and a second device. The first device may be, for example, a tag-type terminal device in the scenarios of Figures 1 to 3, and the second device may be, for example, a network device in the scenarios of Figures 1 to 3, an intermediate node in the scenario of Figure 2, or an auxiliary node in the scenario of Figure 3.

[0246] Figure 16 is a schematic diagram of information interaction between the first device and the second device. As shown in Figure 16, the interaction process includes:

[0247] 1610: The second device sends a first signal to the first device on the first resource, the first signal carrying at least first information and / or second information, the first information being at least control information sent by the second device, and the second information being at least data information sent by the second device;

[0248] 1620: The first device sends a second signal to the second device on the second resource.

[0249] In the above embodiments, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0250] In some embodiments, the first signal further includes third information and / or a first sub-signal, and the first device determines that the first signal includes the first information based on the third information and / or the first sub-signal.

[0251] The behavior of the first and second devices, as well as the relevant content of the first signal, second signal, first sub-signal, first information, second information, and third information, have been described in the embodiments of the first aspect, and their content is incorporated herein by reference and will not be repeated here.

[0252] This application also provides a terminal device, which may be a tag-type terminal device of the foregoing embodiments, an intermediate node of the foregoing embodiments, or an auxiliary node of the foregoing embodiments. However, this application is not limited to these and may also be other devices.

[0253] Figure 17 is a schematic diagram of a terminal device according to an embodiment of this application. As shown in Figure 17, the terminal device 1700 may include a processor 1710 and a memory 1720; for example, the memory 1720 stores data and programs and is coupled to the processor 1710. It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunications functions or other functions.

[0254] For example, if the terminal device is a tag-type terminal device as described above, the processor 1710 can be configured to execute a program to implement the signal transmission and reception method as described in the embodiment of the first aspect. For example, the processor 1710 can be configured to perform the following control:

[0255] Receive a first signal sent by a second device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0256] Send a second signal to the second device on the second resource;

[0257] The first information is used at least to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0258] For example, if the terminal device is the aforementioned intermediate or auxiliary node, the processor 1710 can be configured to execute a program to implement the signal transmission and reception method as described in the second aspect of the embodiment. For example, the processor 1710 can be configured to perform the following control:

[0259] A first signal is sent to a first device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0260] Receive a second signal sent by the first device on the second resource;

[0261] The first information is used at least to instruct, control, or trigger the first device to receive the second information, and / or to control, schedule, or trigger the first device to send the second signal.

[0262] As shown in Figure 17, the terminal device 1700 may further include a communication module 1730; it may or may not have a power supply. It is worth noting that the terminal device 1700 is not necessarily required to include all the components shown in Figure 17; these components are not essential. Furthermore, the terminal device 1700 may also include components not shown in Figure 17, which can be referred to in the prior art.

[0263] This application also provides a network device, which can be the network device described in the foregoing embodiments, such as a base station, but this application is not limited to this and can also be other network devices.

[0264] Figure 18 is a schematic diagram of the network device according to an embodiment of this application. As shown in Figure 18, the network device 1800 may include: a processor 1810 (e.g., a central processing unit CPU) and a memory 1820; the memory 1820 is coupled to the processor 1810. The memory 1820 can store various data; in addition, it also stores an information processing program 1830, and executes the program 1830 under the control of the processor 1810.

[0265] For example, processor 1810 can be configured to execute a program to implement the signal transmission and reception method as described in the embodiments of the second aspect. For example, processor 1810 can be configured to perform the following control:

[0266] A first signal is sent to a first device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0267] Receive a second signal sent by the first device on the second resource;

[0268] The first information is used at least to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0269] In addition, as shown in Figure 18, network device 1800 may also include: transceiver 1840 and antenna 1850, etc.; the functions of the above components are similar to those in the prior art, and will not be described in detail here. It is worth noting that network device 1800 does not necessarily have to include all the components shown in Figure 18; in addition, network device 1800 may also include components not shown in Figure 18, which can be referred to in the prior art.

[0270] This application also provides a computer program, wherein when the program is executed in a tag-type terminal device, the program causes the tag-type terminal device to perform the signal transmission and reception method described in the first aspect of the embodiment.

[0271] This application also provides a storage medium storing a computer program, wherein the computer program causes a tag-type terminal device to perform the signal transmission and reception method described in the first aspect of the embodiment.

[0272] This application also provides a computer program in which, when executed in a network device, intermediate node, or auxiliary node, the program causes the network device, intermediate node, or auxiliary node to perform the signal transmission and reception method described in the second aspect of the embodiment.

[0273] This application also provides a storage medium storing a computer program, wherein the computer program causes a network device, intermediate node, or auxiliary node to perform the signal transmission and reception method described in the second aspect of the embodiment.

[0274] The apparatus and methods described above in this application can be implemented in hardware or in combination with software. This application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. This application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.

[0275] The methods / apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or combinations of one or more functional block diagrams shown in the figures can correspond to various software modules in a computer program flow, or to various hardware modules. These software modules can correspond to the various steps shown in the figures, respectively. These hardware modules can be implemented, for example, using a field-programmable gate array (FPGA) to embed these software modules.

[0276] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a high-capacity MEGA-SIM card or a high-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the high-capacity flash memory device.

[0277] One or more and / or one or more combinations of functional blocks described in the accompanying drawings can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more and / or one or more combinations of functional blocks described in the accompanying drawings can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0278] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0279] Regarding the implementation methods including the above embodiments, the following notes are also disclosed:

[0280] 1. A signal transceiver method, applied to a first device, the first device communicating with a second device, wherein the method includes:

[0281] The first device receives a first signal sent by the second device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device.

[0282] The first device sends a second signal to the second device on the second resource;

[0283] Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

[0284] 2. According to the method described in Appendix 1, wherein,

[0285] The first information includes various types of control signaling.

[0286] 3. According to the method described in Appendix 1, wherein,

[0287] The length and / or format of the first information is fixed, determined at least by a predefined method; or the length and / or format of the first information is variable, determined at least by the third information.

[0288] 4. According to the method described in Appendix 1, wherein,

[0289] The second information is carried at least in a MAC layer service or protocol data unit or service or protocol data sub-unit. The second device sends the second information to the first device through a layer 1 data channel, and / or the second device sends the second information to the first device in the form of a service or protocol data unit or service or protocol data sub-unit.

[0290] 5. According to the method described in Appendix 4, wherein,

[0291] A MAC layer service or protocol data unit includes one or more service or protocol data sub-units;

[0292] Wherein, the position of the business or protocol data sub-unit related to the first information in a business or protocol data unit is fixed, at least determined by a predefined method; or, the position of the business or protocol data sub-unit related to the first information in a business or protocol data unit is not fixed, at least determined by the header or subheader carrying the third information.

[0293] 6. According to the method described in Appendix 5, wherein,

[0294] The business or protocol data sub-unit related to the first information is located before or after the business or protocol data sub-unit related to the second information; or, it is located at any position at the beginning, end, or middle of a business or protocol data unit.

[0295] 7. According to the method described in Appendix 4, wherein,

[0296] A MAC layer service or protocol data unit includes one or more service or protocol data sub-units related to the first information and / or service or protocol data sub-units related to the second information. Each service or protocol data sub-unit contains at least one header or subheader related to the third information.

[0297] 8. According to the method described in Appendix 7, wherein,

[0298] One or more of the headers or subheaders are located at the beginning, end, or any middle position of a service or protocol data unit; or one of the headers or subheaders is located before its corresponding first or second information.

[0299] 9. According to the method described in Appendix 1, wherein,

[0300] The first device receives the second information and / or sends the second signal using predefined parameters, or the first device uses existing parameters to receive the second information and / or send the second signal.

[0301] 10. The method according to Appendix 1, wherein,

[0302] The second information is used to trigger the first device to send the second signal.

Claims

1. A signal transceiver, configured in a first device, wherein the first device communicates with a second device, wherein... The device includes: A receiving unit receives a first signal sent by the second device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information sent by the second device, and the second information is at least data information sent by the second device. A transmitting unit that transmits a second signal to the second device on a second resource; Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

2. The apparatus according to claim 1, wherein, The first information corresponds at least one-to-one with the first signal.

3. The apparatus according to claim 2, wherein, The start and / or end position and / or duration of the first resource carrying the first information in the time domain are fixed, at least determined by a predefined method; The first device receives the first information sent by the second device on the predefined first resource.

4. The apparatus according to claim 2, wherein, On the timeline, the first resource carrying the first information is located before the first resource carrying the second information.

5. The apparatus according to claim 2, wherein, There is a first time interval between the first resource carrying the first information and the first resource carrying the second information, which is configured or predefined by the second device.

6. The apparatus according to claim 1, wherein, The first information is carried at least in the control signaling of Layer 1, and the second device sends the first information to the first device through the control channel and / or data channel of Layer 1; or, The first information is carried at least in the control signaling of the higher layer, and the second device sends the first information to the first device in the form of a service or protocol data unit or a service or protocol data sub-unit.

7. The apparatus of claim 1, wherein, The device further includes: The processing unit determines that the first signal contains the first information based on the third information and / or the first sub-signal carried on the first signal.

8. The apparatus according to claim 7, wherein, The third information is at least used to indicate whether the first signal includes the first information, and / or to indicate the transmission format of the first signal, and / or to indicate whether a higher-level service or protocol data unit or sub-unit carries or contains the first information.

9. The apparatus according to claim 8, wherein, The third information corresponds one-to-one with the first information and / or the second information.

10. The apparatus according to claim 8, wherein, The start and / or end position and / or duration of the first resource carrying the third information in the time domain are fixed, at least determined in a predefined manner; and / or, The format and / or length of the third information is fixed, at least determined by a predefined method.

11. The apparatus according to claim 8, wherein, The first resource carrying the third information is located before the first resource carrying the first information and / or the second information; or, The third information is carried in the header or sub-header of a service or protocol data unit or service or protocol data sub-unit related to the first information and / or the second information.

12. The apparatus according to claim 8, wherein, The third information also indicates the length of the first information and / or the type of the first information.

13. The apparatus according to claim 8, wherein, The third information is at least carried in Layer 1 control signaling, and the second device sends the third information to the first device through the Layer 1 control channel and / or data channel; or... The third information is at least carried in higher-layer control signaling, and the second device sends the third information to the first device in the form of a service or protocol data unit or a service or protocol data subunit; or... The third information is carried at least in the header or subheader of a service or protocol data subunit related to the first information and / or the second information.

14. The apparatus according to claim 7, wherein, The first sub-signal is used at least to indicate whether the first signal includes the first information, and / or to indicate the transmission format of the first signal.

15. The apparatus according to claim 14, wherein, Each of the first signals corresponds to at least one of the first sub-signals.

16. The apparatus according to claim 14, wherein, The first sub-signal is at least a preamble, middle chord, or postamble of the first signal, or the first sub-signal is a guide signal or reference signal for the first information and / or the second information.

17. The apparatus according to claim 15, wherein, Different first signals correspond to different first sub-signals; The processing unit determines whether the first signal contains the first information and / or determines the transmission format of the first signal by detecting the first sub-signal received by the receiving unit.

18. The apparatus of claim 17, wherein, Different first sub-signals are identified by at least one of the following: The pattern or waveform of the signal; A sequence of signals; The duration of the signal.

19. The apparatus according to claim 14, wherein, The first resource carrying the first sub-signal is located at the start position, end position, or any intermediate position of the first resource carrying the first signal; The first resource carrying the first sub-signal has a fixed start position and / or end position and / or duration in the time domain, which is determined at least in a predefined manner.

20. A signal transceiving apparatus configured to a second device, the second device communicating with a first device, wherein, The device includes: A transmitting unit transmits a first signal to the first device on a first resource. The first signal carries at least first information and / or second information. The first information is at least control information transmitted by the second device, and the second information is at least data information transmitted by the second device. A receiving unit that receives a second signal sent by the first device on a second resource; Wherein, the first information is at least used to instruct or control or trigger the first device to receive the second information, and / or to control or schedule or trigger the first device to send the second signal.

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