Communication method, communication device, and communication system

Abstract

The present disclosure relates to the technical field of communications, and provides a communication method, a communication device, and a communication system. The method comprises: a network device sends a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) to a terminal device, the SPS PDSCH belonging to first SPS scheduling, wherein the SPS PDSCH is used for indicating whether the first SPS scheduling is released. In this way, the terminal device acquires indication information for SPS scheduling release without performing blind detection of downlink control information (DCI), thereby reducing detection power consumption of the terminal device.

Description

Communication methods, communication equipment and communication systems Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, communication device and communication system. Background Technology

[0002] Semi-persistent Scheduling (SPS) is a resource allocation mechanism designed to optimize data transmission efficiency for periodic services such as voice calls. SPS improves overall system performance by reducing the frequency of control channel usage, making it particularly suitable for regular and predictable data traffic. Summary of the Invention

[0003] This disclosure proposes a communication method, communication device, and communication system that can solve the technical problem of how to save detection power consumption of terminal devices.

[0004] A first aspect of this disclosure provides a communication method performed by a network device, the method comprising: sending a Physical Downlink Shared Channel (PDSCH) to a terminal device, wherein the PDSCH belongs to a first SPS schedule; wherein the PDSCH is used to indicate whether the first SPS schedule is released.

[0005] A second aspect of this disclosure provides a communication method executed by a terminal device, the method comprising: receiving an SPSPDSCH sent by a network device, the SPSPDSCH belonging to a first SPS schedule; wherein the SPSPDSCH is used to indicate whether the first SPS schedule is released.

[0006] A third aspect of this disclosure provides a network device, including: a processing module and a transceiver module, the transceiver module being configured to send an SPSPDSCH to a terminal device, the SPSPDSCH belonging to a first SPS schedule; wherein the SPSPDSCH is used to indicate whether the first SPS schedule is released.

[0007] A fourth aspect of this disclosure provides a terminal device, including: a transceiver module and a processing module, wherein the transceiver module is configured to receive an SPSPDSCH sent by a network device, the SPSPDSCH belonging to a first SPS schedule; wherein the SPSPDSCH is used to indicate whether the first SPS schedule is released.

[0008] A fifth aspect of this disclosure provides a communication device for performing the method described in the first aspect embodiment or the method described in the second aspect embodiment.

[0009] A sixth aspect of this disclosure provides a communication system including a network device and a terminal device, wherein the network device is configured to implement the method described in the first aspect embodiment, and the terminal device is configured to implement the method described in the second aspect embodiment.

[0010] A seventh aspect embodiment of this disclosure provides a storage medium that, when the instructions are executed on a communication device, causes the communication device to perform the method as described in the first aspect embodiment or the method as described in the second aspect embodiment.

[0011] An eighth aspect of this disclosure provides a program product including at least one program and instructions, which, when executed by a communication device, implement the method described in the first aspect embodiment or the method described in the second aspect embodiment.

[0012] The technical solution provided in this disclosure allows the network device to send an SPS PDSCH to the terminal device. This SPS PDSCH belongs to the first SPS scheduler, and can then indicate whether the first SPS scheduler has been released. This eliminates the need for the terminal device to obtain the SPS scheduler release indication information through blind detection based on Downlink Control Information (DCI), thus saving the detection power consumption of the terminal device.

[0013] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0015] Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure.

[0016] Figure 1B is a schematic diagram of an example provided by an embodiment of this disclosure.

[0017] Figure 1C is a schematic diagram of another example provided by an embodiment of this disclosure.

[0018] Figure 2A is an interactive schematic diagram of a communication method provided in an embodiment of this disclosure.

[0019] Figure 2B is a schematic diagram of yet another example provided in the embodiments of this disclosure.

[0020] Figure 2C is a schematic diagram of yet another example provided in the embodiments of this disclosure.

[0021] Figure 2D is a schematic diagram of yet another example provided in the embodiments of this disclosure.

[0022] Figure 2E is a schematic diagram of yet another example provided by an embodiment of this disclosure.

[0023] Figure 2F is a schematic diagram of yet another example provided by an embodiment of this disclosure.

[0024] Figure 2G is a schematic diagram of yet another example provided in the embodiments of this disclosure.

[0025] Figure 2H is a schematic diagram of yet another example provided in the embodiments of this disclosure.

[0026] Figure 2I is a schematic diagram of yet another example provided by an embodiment of this disclosure.

[0027] Figure 3 is a schematic diagram of an example of a communication method provided in an embodiment of this disclosure.

[0028] Figure 4A is a structural block diagram of a network device provided in an embodiment of this disclosure.

[0029] Figure 4B is a structural block diagram of a terminal device provided in an embodiment of this disclosure.

[0030] Figure 5A is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure.

[0031] Figure 5B is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0032] The embodiments of this disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure. It should be noted that, unless otherwise specified, the embodiments of this disclosure and the features in the embodiments can be combined with each other.

[0033] This disclosure presents a communication method, communication device, and communication system.

[0034] In a first aspect, embodiments of this disclosure propose a communication method executed by a network device, the method comprising: sending an SPSPDSCH to a terminal device, wherein the SPSPDSCH belongs to a first SPS schedule; wherein the SPSPDSCH is used to indicate whether the first SPS schedule is released.

[0035] The technical solution provided in this disclosure eliminates the need for terminal devices to obtain SPS scheduling release indication information based on DCI blind detection, thus saving detection power consumption of terminal devices.

[0036] In some embodiments of the first aspect, the SPS PDSCH includes a first PDSCH portion, which occupies at least one first time unit. The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released. By using the modulation depth of the first PDSCH portion in the SPS PDSCH to indicate whether the first SPS schedule is released, the terminal device does not need to obtain the indication information of SPS schedule release based on DCI blind detection, thus saving the detection power consumption of the terminal device.

[0037] In conjunction with some embodiments of the first aspect, the method further includes:

[0038] SPS modulation and coding bits are mapped onto the time-frequency resources occupied by the SPS PDSCH;

[0039] On the time-frequency resources where SPS modulation and coding bit mapping is completed, at least one first time unit is determined;

[0040] Superimposed modulation of the at least one first time unit based on the modulation depth of the first PDSCH portion.

[0041] In this way, the first PDSCH portion contained in the SPS PDSCH can be accurately superimposed and modulated, and the modulation depth of the first PDSCH portion can be used to accurately indicate whether the first SPS schedule is released.

[0042] In conjunction with some embodiments of the first aspect, superimposing modulation on the at least one first time unit according to the modulation depth of the first PDSCH portion includes: superimposing modulation of the at least one first time unit in the power domain or energy domain according to the modulation depth of the first PDSCH portion.

[0043] In this way, the modulation of the first PDSCH portion can be accurately superimposed, and the modulation depth of the first PDSCH portion can be used to accurately indicate whether the first SPS schedule is released.

[0044] In conjunction with some embodiments of the first aspect, superimposed modulation of the power domain or energy domain of the at least one first time unit according to the modulation depth of the first PDSCH portion includes: superimposed modulation of the power domain or energy domain of all or part of the time-frequency resources of the at least one first time unit according to the modulation depth of the first PDSCH portion.

[0045] This approach can satisfy different application scenarios. The release of the first SPS schedule can be determined by the modulation depth of all time-frequency resources in the first PDSCH section, or by the modulation depth of a portion of the time-frequency resources in the first PDSCH section. For example, the release of the first SPS schedule can be determined by the change in the modulation depth of this portion of time-frequency resources relative to the modulation depth of other time-frequency resources in the first PDSCH section.

[0046] In conjunction with some embodiments of the first aspect, the modulation depth of the first PDSCH portion is used to indicate whether the first SPS scheduling is released, including:

[0047] The value obtained by superposition and modulation in the power domain at least one first time unit represents the first state, and the first SPS scheduling release is determined.

[0048] The value obtained by superposition modulation in the power domain on at least one first time unit represents the second state, and it is determined that the first SPS schedule is not released.

[0049] This method allows for accurate determination of whether the first SPS scheduler has been released.

[0050] In conjunction with some embodiments of the first aspect, the modulation depth of the first PDSCH portion is used to indicate whether the first SPS scheduling is released, including:

[0051] The value obtained by superposition and modulation of the energy domain on at least one first time unit represents the third state, and the first SPS scheduling release is determined.

[0052] The value obtained by superposition modulation of the energy domain on at least one first time unit represents the fourth state, and it is determined that the first SPS schedule is not released.

[0053] This method allows for accurate determination of whether the first SPS scheduler has been released.

[0054] In conjunction with some embodiments of the first aspect, the value is the resource unit (RE) power after superposition modulation on the at least one first time unit.

[0055] In this way, the RE power after superimposed modulation on at least one first time unit of the first PDSCH section accurately indicates whether the first SPS schedule is released.

[0056] In conjunction with some embodiments of the first aspect, mapping SPS modulation and coding bits onto the time-frequency resources occupied by the SPS PDSCH includes:

[0057] SPS modulation and coding bits are mapped onto the time-frequency resources occupied by the SPS PDSCH in the order of time domain first and then frequency domain.

[0058] In some embodiments of the first aspect, the first time unit is an orthogonal frequency division multiplexing (OFDM) symbol or a sub-slot. This approach can meet various requirements.

[0059] In conjunction with some embodiments of the first aspect, when the SPS PDSCH is used to indicate the release of the first SPS schedule, the SPS PDSCH is the last PDSCH of the first SPS schedule.

[0060] This method avoids a significant gap between the SPS scheduling release instruction and the actual last transmitted SPS PDSCH, thus reducing transmission latency.

[0061] Secondly, embodiments of this disclosure propose a communication method executed by a terminal device, the method comprising: receiving an SPSPDSCH sent by a network device, wherein the SPSPDSCH belongs to a first SPS schedule; wherein the SPSPDSCH is used to indicate whether the first SPS schedule is released.

[0062] The technical solution provided in this disclosure eliminates the need for terminal devices to obtain SPS scheduling release indication information based on DCI blind detection, thus saving detection power consumption of terminal devices.

[0063] In conjunction with some embodiments of the second aspect, the SPS PDSCH includes a first PDSCH portion, the first PDSCH portion occupies at least one first time unit, and the modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released.

[0064] In conjunction with some embodiments of the second aspect, the at least one first time unit is superimposed modulation according to the modulation depth, the at least one first time unit is determined on the time-frequency resources occupied by the SPS PDSCH, and the time-frequency resources have completed the SPS modulation and coding bit mapping.

[0065] In conjunction with some embodiments of the second aspect, the at least one first time unit is superimposed and modulated in the power domain or energy domain according to the modulation depth.

[0066] In conjunction with some embodiments of the second aspect, all or part of the time-frequency resources of the at least one first time unit are superimposed and modulated in the power domain or energy domain according to the modulation depth.

[0067] In conjunction with some embodiments of the second aspect, the modulation depth of the first PDSCH portion is used to indicate whether the first SPS scheduling is released, including:

[0068] The value obtained by superposition and modulation in the power domain at least one first time unit represents the first state, and the first SPS scheduling release is determined.

[0069] The value obtained by superposition modulation in the power domain on at least one first time unit represents the second state, and it is determined that the first SPS schedule is not released.

[0070] In conjunction with some embodiments of the second aspect, the modulation depth of the first PDSCH portion is used to indicate whether the first SPS scheduling is released, including:

[0071] The value obtained by superposition and modulation of the energy domain on at least one first time unit represents the third state, and the first SPS scheduling release is determined.

[0072] The value obtained by superposition modulation of the energy domain on at least one first time unit represents the fourth state, and it is determined that the first SPS schedule is not released.

[0073] In conjunction with some embodiments of the second aspect, the value is the resource unit (RE) power after superposition modulation on the at least one first time unit.

[0074] In conjunction with some embodiments of the second aspect, the time-frequency resources occupied by the SPS PDSCH have been mapped to SPS modulation and coding bits in the order of first time domain and then frequency domain.

[0075] In conjunction with some embodiments of the second aspect, the first time unit is an orthogonal frequency division multiplexing (OFDM) symbol or a sub-slot.

[0076] In conjunction with some embodiments of the second aspect, the SPS PDSCH is used to indicate the release of the first SPS schedule, and the SPS PDSCH is the last PDSCH of the first SPS schedule.

[0077] Thirdly, embodiments of this disclosure provide a network device comprising: a processing module and a transceiver module, wherein the transceiver module is configured to send a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) to a terminal device, wherein the SPS PDSCH belongs to a first SPS schedule; wherein the SPS PDSCH is used to indicate whether the first SPS schedule is released.

[0078] Fourthly, this disclosure provides a terminal device comprising: a transceiver module and a processing module, wherein the transceiver module is configured to receive a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) sent by a network device, the SPS PDSCH belonging to a first SPS schedule; wherein the SPS PDSCH is used to indicate whether the first SPS schedule is released.

[0079] Fifthly, embodiments of this disclosure provide a communication device for performing the method as described in the first aspect embodiment or the method as described in the second aspect embodiment.

[0080] In a sixth aspect, embodiments of this disclosure provide a communication system, including: a network device and a terminal device; the network device is configured to perform the method described in the first aspect embodiment, and the terminal device is configured to perform the method described in the second aspect embodiment.

[0081] In a seventh aspect, embodiments of this disclosure provide a storage medium that, when the instructions are executed on a communication device, causes the communication device to perform the method as described in the first aspect embodiment or the second aspect embodiment.

[0082] Eighthly, embodiments of this disclosure provide a program product comprising at least one of a program and instructions, wherein the program and at least one of the instructions, when executed by a communication device, implement the method as described in the first aspect embodiment or the second aspect embodiment.

[0083] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in the first aspect embodiment or the second aspect embodiment.

[0084] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described above as in the first aspect embodiment or the second aspect embodiment.

[0085] It is understood that the aforementioned network devices, terminal devices, communication devices, communication systems, storage media, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0086] This disclosure provides a communication method, communication device, and communication system. In some embodiments, the terms "communication method" can be substituted for "information processing method," "information sending method," and "information receiving method," and the terms "communication device" can be substituted for "information processing device," "information sending device," and "information receiving device," and the terms "information processing system," "communication system," "information sending system," and "information receiving system" can be substituted for each other.

[0087] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0088] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0089] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0090] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0091] In the embodiments disclosed herein, "multiple" refers to two or more.

[0092] In some embodiments, the terms “at least one of”, “at least one of”, “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0093] The descriptions in this disclosure, such as "at least one of A, B, C..." or "A and / or B and / or C...", include the case where any one of A, B, C... exists alone, as well as the case where any combination of any of A, B, C... exists alone. Each case can exist alone. For example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B combination, A and C combination, B and C combination, and A and B and C combination. For example, A and / or B includes the cases of A alone, B alone, and A and B combination.

[0094] In some embodiments, the notation "in one case A, in another case B" or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: A is executed regardless of B, i.e., A is executed in some embodiments; B is executed regardless of A, i.e., B is executed in some embodiments; A and B are selectively executed, i.e., A and B are selected for execution in some embodiments; A and B are both executed, i.e., A and B are executed in some embodiments. The same applies when there are more branches such as A, B, and C.

[0095] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0096] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0097] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0098] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0099] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0100] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0101] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0102] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", "client", and "narrowband Internet of Things (NB-IoT) device" can be used interchangeably.

[0103] In some embodiments, access network devices, core network devices, or network devices can be replaced with terminal devices. For example, embodiments of this disclosure can also be applied to structures that replace communication between access network devices, core network devices, or network devices and terminal devices with communication between multiple terminal devices (e.g., also referred to as device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal devices can also be configured to have all or part of the functions of the access network devices. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminal devices (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink link, etc., can be replaced with sidelink link.

[0104] In some embodiments, the terminal device may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal device.

[0105] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0106] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0107] In some embodiments, the threshold mentioned in this embodiment may be a numerical value, a constant, or some fixed value.

[0108] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0109] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0110] The predefined terms in this disclosure can be understood as definition, pre-defined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned, etc.

[0111] The term "release" in this disclosure can be understood as deactivation, deactivation, disabling, or cessation.

[0112] The communication methods, communication equipment, and communication systems provided in this disclosure will now be described in detail with reference to the accompanying drawings.

[0113] Figure 1A shows a structural diagram of a communication system according to an embodiment of the present disclosure. As shown in Figure 1A, the system architecture may include a network device 101 and a terminal device 102.

[0114] In some embodiments, network device 101 may include at least one of access network device and core network device.

[0115] In some embodiments, the access network device is, for example, a node or device that connects a terminal device to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0116] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0117] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0118] In some embodiments, the terminal device 102 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0119] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0120] The following embodiments of this disclosure can be applied to the communication system or some of the subjects shown in FIG1A, but are not limited thereto. The subjects shown in FIG1A are illustrative. The communication system may include all or some of the subjects in FIG1A, or may include other subjects other than those in FIG1A. The number and form of each subject are arbitrary. The connection relationship between the subjects is illustrative. The subjects may not be connected to each other or may be connected in any way. The connection may be direct or indirect, wired or wireless.

[0121] The embodiments disclosed herein can be applied to satellite communications, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G NR, Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0122] In some embodiments, the commonly used scheduling method in New Radio (NR) is dynamic scheduling, which involves scheduling a Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH) using a Downlink Control Information (DCI). Taking DCI-driven dynamic scheduling of PDSCH as an example, as shown in Figure 1B, the base station (gNB) first sends a DCI (DCI#1), and then sends PDSCH#1 at a specific location based on the scheduling information carried in the DCI. DCI#1 carries indication information such as time-frequency resources for PDSCH#1. Correspondingly, the terminal device blindly detects DCI#1 on the Physical Downlink Control Channel (PDCCH) channel, and then receives the corresponding PDSCH based on the time-frequency resource indication information of this DCI. Then, it blindly detects the next DCI and receives the corresponding PDSCH based on the time-frequency resource indication information of that DCI. Similarly, before sending the PDSCH, the base station will first send a DCI to dynamically indicate the PDSCH's time and frequency resources and other transmission parameters. Correspondingly, the terminal device will first use a blind detection DCI to dynamically obtain the PDSCH's transmission parameters, and then receive the PDSCH based on the PDSCH transmission parameters carried in the DCI.

[0123] In some embodiments, unlike dynamic scheduling, semi-persistent scheduling (SPS) for PDSCH can reduce the number of blind DCI detections by the terminal device, further reducing latency and power consumption. For example, a DCI or RRC reconfiguration message can indicate several (persistent) PDSCHs or PUSCHs. Once the terminal device receives a specific DCI or RRC reconfiguration message, it begins periodically receiving PDSCHs or sending PUSCHs until this persistent scheduling stops. During this persistent scheduling period, the terminal device does not need to perform DCI detections again; this is semi-persistent scheduling. Compared to dynamic scheduling, semi-persistent scheduling (SPS) reduces the number of blind DCI detections required by the terminal device, lowering transmission latency and power consumption.

[0124] In some embodiments, the SPS PDSCH scheduling process can be divided into two parts: first, pre-configuring necessary parameters such as the SPS PDSCH transmission period through Radio Resource Control (RRC); and second, activating or releasing SPS PDSCH transmission through DCI. Before configuring SPS parameters in RRC signaling, the base station also assigns a Configured Scheduling (CS) – Radio Network Temporary Identifier (RNTI) – to each terminal device to identify different terminal devices. Combining the two parts of the SPS PDSCH scheduling process, as shown in Figure 1C, the base station sending SPS PDSCH or the terminal device receiving SPS PDSCH involves two steps:

[0125] Step 1: The base station sends the necessary parameters for the SPS PDSCH via RRC configuration or reconfiguration signaling, including the period, the number of Hybrid Automatic Repeat Request (HARQ) processes, and the Modulation and Coding Scheme (MCS) table. Correspondingly, the terminal equipment receives the necessary parameter configuration for the SPS PDSCH.

[0126] Step 2: The base station sends CS-RNTI scrambled DCIs (including DCI#1 or DCI#2) to activate or release SPS transmission. DCI#1 is used to activate SPS PDSCH transmission; that is, after DCI#1 is sent, PDSCH#1 can be sent at the first candidate resource location of the SPS PDSCH. DCI#1 also contains frequency domain resource configuration information, including Frequency Domain Resource Allocation (FDRA) indication information and MCS indication information. DCI#2 is used to release SPS PDSCH transmission; that is, before DCI#2 is sent, the base station sends PDSCH#1 and PDSCH#2 sequentially according to the period configured in the RRC. After DCI#2 is sent, the time-frequency resource location where PDSCH#3 is located is no longer used to send PDSCH#3. Correspondingly, the terminal device receives the period and other configuration information in the RRC, listens to the corresponding CS-RNTI scrambled DCI, and then determines the start and end positions for receiving SPS PDSCH based on the DCI.

[0127] Based on the SPS PDSCH transmission mechanism described above, the PDCCH allocated to SPS for scheduling activation or release must simultaneously satisfy the following:

[0128] 1) The Cyclic Redundancy Check (CRC) associated with the DCI format is scrambled by CS-RNTI or G-CS-RNTI. In the embodiments of this disclosure, CS-RNTI is used uniformly without distinguishing between CS-RNTI and G-CS-RNTI.

[0129] 2) The NDI field in the DCI format is set to "0".

[0130] 3) If a DFI field exists in the DCI format, this field is set to "0".

[0131] 4) The TDRA field in the DCI format is indicated by a single SLIV.

[0132] 5) When scheduling is active and a PDSCH-to-HARQ_feedback timing indication exists, the PDSCH-to-HARQ_feedback timing indication field does not provide an inapplicable value.

[0133] When DCI indicates SPS scheduling activation, in addition to indicating activation, it is also necessary to indicate FDRA and MCS parameters; when DCI indicates SPS scheduling release, only a release message is needed.

[0134] In some embodiments, the terminal device obtains the SPS schedule release indication information based on DCI blind detection. From the perspective of the terminal device, the DCI-based SPS schedule release indication method requires high power consumption. In some examples, power consumption simulation tests show that the relative power consumption required for PDCCH blind detection is higher than that for sequence detection. From the system's perspective, the actual end position of SPS PDSCH transmission depends on the location of the DCI carrying the schedule release indication information. Since there is a significant gap between the DCI carrying the schedule release indication information and the actual last transmitted SPS PDSCH, the transmission latency will be high. From the base station's perspective, the DCI only carries 1 bit of transmission release verification information. The resource overhead of sending the DCI is relatively high compared to the number of information bits transmitted, meaning that transmitting 1 bit of information via DCI results in low resource efficiency.

[0135] To this end, this disclosure proposes a communication scheme in which the network device sends an SPS PDSCH to the terminal device. The SPS PDSCH belongs to the first SPS scheduler and can instruct the first SPS to transmit release information, thereby saving the terminal's detection power consumption and reducing the network-side DCI resource overhead and the processing latency of the terminal's SPS downlink reception. For details, please refer to the description of the following method embodiments.

[0136] Figure 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2A, the method includes the following steps:

[0137] Step S201: The network device maps SPS modulation and coding bits on the time-frequency resources occupied by SPS PDSCH.

[0138] In some embodiments, the SPS PDSCH belongs to the first SPS schedule, in which the terminal device periodically receives the PDSCH.

[0139] In some embodiments, the network device may indicate whether the first SPS schedule is released by the modulation depth of the first PDSCH portion contained in the SPS PDSCH. The first PDSCH portion may include at least one first time unit, i.e. at least one specific time unit, which may be predefined by the protocol, such as the last one or two time units occupied by the SPS PDSCH.

[0140] In some embodiments, the first time unit may be an orthogonal frequency division multiplexing (OFDM) symbol, or a sub-slot, or a mini-slot, or a slot, a subframe, or a microsecond, etc., wherein it may be an integer time unit or a non-integer time unit, such as an integer microsecond or a non-integer microsecond, etc.

[0141] In some embodiments, to obtain the modulation depth of the first PDSCH portion contained in the SPS PDSCH, SPS modulation-coded bits can first be mapped onto the time-frequency resources occupied by the SPS PDSCH. In some examples, modulation-coded bits containing SPS information sent to the terminal device are mapped onto the time-frequency resources of the SPS PDSCH.

[0142] In some embodiments, the network device maps SPS modulation and coding bits on the time-frequency resources occupied by the SPS PDSCH in a time-domain-first, then frequency-domain order. Referring to the physical resource mapping method, the modulation and coding bits {+1,-1,-1,+1,…} containing the SPS information of the terminal device can be physically mapped in a time-domain-first, then frequency-domain order.

[0143] For example, as shown in Figure 2B, one grid point in the time domain represents one OFDM Symbol (OS), and one grid point in the frequency domain represents one Resource Element (RE). The specific physical resource mapping method is shown in Figure 2B: the modulation-coded bits {+1,-1,-1,+1,…} are mapped sequentially from the smallest RE to the largest RE M on the first OS, following the direction indicated by the black arrow. Then, on the second OS, they are mapped sequentially from the smallest RE to the largest RE, and so on, until the last modulation-coded bit is mapped on the Nth OS.

[0144] In step S202, the network device determines at least one first time unit occupied by the first PDSCH portion included in the SPS PDSCH on the time-frequency resources for completing the SPS modulation and coding bit mapping.

[0145] In some embodiments, at least one first time unit occupied by the first PDSCH portion of the SPS PDSCH can be determined on the time-frequency resources where the SPS PDSCH completes the SPS modulation-coded bit mapping. For example, the last OFDM symbol, the last two OFDM symbols, or the last three OFDM symbols occupied by the SPS PDSCH. These first time units can be predefined by the protocol.

[0146] In step S203, the network device performs superposition modulation on at least one determined first time unit according to the modulation depth of the first PDSCH portion.

[0147] In some embodiments, the network device may perform power domain or energy domain superposition modulation on at least one first time unit occupied by the first PDSCH portion according to the modulation depth of the first PDSCH portion. For example, the at least one first time unit is superimposed modulation according to the modulation depth, and the at least one first time unit is determined on the time-frequency resources occupied by the SPS PDSCH, which have completed SPS modulation-coded bit mapping. In this way, the first PDSCH portion can be accurately superimposed modulation, and thus the modulation depth of the first PDSCH portion can be used to accurately indicate whether the first SPS schedule is released.

[0148] In some examples, the network device performs power domain or energy domain superposition modulation on all or part of the time-frequency resources of at least one first time unit occupied by the first PDSCH portion according to the modulation depth of the first PDSCH portion. The at least one first time unit's time-frequency resources are superimposed in the power domain or energy domain according to the modulation depth. This approach can satisfy different application scenarios, determining whether the first SPS schedule is released based on the modulation depth of all time-frequency resources in the first PDSCH portion, or based on the modulation depth of a portion of the first PDSCH portion's time-frequency resources, such as determining whether the first SPS schedule is released based on the change in the modulation depth of that portion of time-frequency resources relative to the modulation depth of other time-frequency resources in the first PDSCH portion.

[0149] In some embodiments, the network device selects at least one first time unit in the SPS PDSCH that already carries SPS modulation and coding bits, and performs amplitude modulation or energy modulation superposition to obtain the modulation depth of the first PDSCH portion. The following explanation primarily uses OFDM symbols as an example of the first time unit. For instance, the network device selects at least one OFDM symbol in the SPS PDSCH that already carries modulation and coding bits, performs amplitude modulation or energy modulation superposition, and carries the SPS PDSCH scheduling and release information through the superimposed modulated OFDM symbol.

[0150] In some embodiments, at least one first time unit is selected on the SPSPDSCH that has completed the SPS modulation and coding bit mapping for superposition of amplitude modulation or energy modulation. The specific superposition method depends on the number of first time units selected.

[0151] In some embodiments, if the value obtained by superimposed modulation of the power domain on at least one first time unit occupied by the first PDSCH portion represents a first state, it is determined that the first SPS schedule is released; if the value obtained by superimposed modulation of the power domain on at least one first time unit occupied by the first PDSCH portion represents a second state, it is determined that the first SPS schedule is not released. In some examples, this value may be the resource unit (RE) power obtained by superimposed modulation on the at least one first time unit. In this way, it is possible to accurately determine whether the first SPS schedule is released.

[0152] In some embodiments, if the value obtained by superimposed modulation of the energy domain on at least one first time unit occupied by the first PDSCH portion represents a third state, it is determined that the first SPS schedule is released; if the value obtained by superimposed modulation of the energy domain on at least one first time unit occupied by the first PDSCH portion represents a fourth state, it is determined that the first SPS schedule is not released. In some examples, this value may be the resource unit (RE) power obtained by superimposed modulation on the at least one first time unit. In this way, it is possible to accurately determine whether the first SPS schedule is released.

[0153] In some embodiments, amplitude modulation or energy modulation can be superimposed on a first time unit, such as on an OFDM symbol. When an OFDM symbol (first time unit) is selected from the SPS PDSCH (which can be denoted as the first time-frequency resource) after completing modulation-coded bit mapping for amplitude modulation or energy modulation, the values ​​of the amplitude domain or energy domain can represent two states. One state is used to carry SPS scheduling release information, and the other state is not used to carry SPS scheduling release information. For example, when the selected OFDM symbol is the last OFDM symbol occupied by the SPS PDSCH after completing modulation-coded bit mapping (denoted as the first symbol), all M REs corresponding to the first symbol are superimposed for modulation. As shown in Figure 2D, 1*M time-frequency resources in a specific region are superimposed for modulation to carry SPS scheduling release information. As shown in Figure 2C, 1*M time-frequency resources in the last OS in the white region are not superimposed for modulation and are not used to carry SPS scheduling release information. For example, assuming the power of each RE in the white region is P, the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol carries SPS scheduling release information by different power levels. When the terminal device detects that the RE power level on the first symbol is close to P, it considers that the current first symbol does not carry SPS scheduling release information and can continue to receive the PDSCH at the next candidate time domain position (e.g., PDSCH#3 in Figure 2I); when ...). When this happens, it is assumed that the current first symbol carries SPS scheduling release information, and the PDSCH at the next candidate time domain position will no longer be received. In some examples, the information carried by the two states can also be exchanged.

[0154] In some embodiments, amplitude modulation or energy modulation can be superimposed on multiple first time units, such as on multiple OFDM symbols. For example, when two OFDM symbols are selected in the SPS PDSCH (denoted as the first time-frequency resource) after the modulation-coded bit mapping is completed for amplitude modulation or energy modulation, the values ​​of the amplitude domain or energy domain can represent two states. One state is used to carry SPS scheduling release information, and the other state is not used to carry SPS scheduling release information.

[0155] For example, when the two selected OFDM symbols are the last two OFDM symbols occupied by the SPS PDSCH that completes the modulation and coding bit mapping (denoted as the first symbol group), all M REs corresponding to the first symbol group are superimposed modulation. As shown in Figure 2E, 2*M time-frequency resources in a specific region are superimposed modulation to carry SPS scheduling release information. As shown in Figure 2C, the 2*M time-frequency resources of the last two OSs in the white region are not superimposed modulation and are not used to carry SPS scheduling release information. For example, assuming the power of each RE in the white region is P, and the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol group carries SPS scheduling release information by different power levels. When the terminal device detects that the RE power level on the first symbol group is close to P, it considers that the current first symbol group does not carry SPS scheduling release information and can continue to receive the PDSCH at the next candidate time domain position (e.g., PDSCH#3 in Figure 2I); when ...). When this happens, it is assumed that the current first symbol group carries SPS scheduling release information, and PDSCH at the next candidate time domain location will no longer be received. In some examples, the information carried by the two states can also be exchanged.

[0156] For example, when the two selected OFDM symbols are the last two OFDM symbols occupied by the SPS PDSCH that completes the modulation and coding bit mapping (denoted as the first symbol group), all M REs corresponding to the first symbol group are superimposed modulation. As shown in Figures 2F and 2G, partial superimposed modulation is performed on the 2*M time-frequency resources of the first symbol group to carry or not carry SPS scheduling release information. As shown in Figure 2F, when the superimposed modulation pattern is low at the beginning and high at the end, it is not used to carry SPS scheduling release information. As shown in Figure 2G, when the superimposed modulation pattern is high at the beginning and low at the end, it is used to carry SPS scheduling release information. For example, assuming the power of each RE in the white area is P, and the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol group carries SPS scheduling release information by comparing the different power levels of the preceding and following OSs. When the terminal device detects that the RE power of the preceding OS in the first symbol group is greater than that of the following OS, it considers that the current first symbol group does not carry SPS scheduling release information and can continue to receive PDSCH at the next candidate time-domain position (e.g., PDSCH#3 in Figure 2I); when the terminal device detects that the RE power of the following OS in the first symbol group is greater than that of the preceding OS, it considers that the current first symbol group carries SPS scheduling release information and will no longer continue to receive PDSCH at the next candidate time-domain position. In some examples, the information carried by the two patterns can also be swapped. For ease of understanding, the superposition of this method can be referenced to the Manchester coding method.

[0157] Step S204: The network device sends SPSPDSCH to the terminal device.

[0158] In some embodiments, the terminal device receives SPSPDSCH sent by the network device.

[0159] In some embodiments, when an SPS PDSCH is used to indicate the release of the first SPS schedule to which it belongs, the SPS PDSCH may be the last PDSCH of the first SPS schedule.

[0160] For example, as shown in Figure 2H, the scrambled CS-RNTI and verification field corresponding to the CRC of the DCI can indicate the release of SPS PDSCH scheduling for a specific terminal device or group of terminal devices. From the perspective of the terminal device, this method of SPS scheduling release indication based on DCI requires high power consumption. From the perspective of the system, the actual end position of SPS PDSCH transmission depends on the position of the DCI carrying the scheduling release indication information. Since there is a significant gap between the DCI carrying the scheduling release indication information and the actual last transmitted SPS PDSCH, the transmission delay will be high. From the perspective of the base station, the DCI only carries 1 bit of transmission release verification information. The resource overhead generated by sending the DCI is relatively high compared to the number of information bits transmitted, that is, transmitting 1 bit of information through DCI results in low resource efficiency. As shown in Figure 2I, this disclosure proposes a new method for indicating SPS transmission release information based on PDSCH superimposed modulation. The terminal device does not need to blindly detect the DCI to obtain SPS scheduling release information. The SPS scheduling release is determined by the modulation depth of the first PDSCH part included in the SPS PDSCH, which can save power consumption of the terminal device. If the modulation depth of the first PDSCH portion of the current SPS PDSCH is used to indicate the release of the first SPS schedule, then the current SPS PDSCH is the last PDSCH of the first SPS schedule. Therefore, there is no gap between it and the actual last transmitted SPS PDSCH. The base station does not need to send DCI to carry SPS schedule release information. It can directly reuse the OFDM symbols occupied by the SPS PDSCH to indicate the SPS transmission release information, which can save network overhead.

[0161] The communication method involved in this embodiment may include at least one of steps S201 to S204. For example, step S201, step S202, step S203, and step S204 may be implemented as independent embodiments. Alternatively, some or all of the steps in S201 to S204 may be combined as independent embodiments, and this embodiment does not limit this.

[0162] This disclosure proposes a communication scheme in which a network device sends an SPS PDSCH to a terminal device. The SPS PDSCH belongs to the first SPS scheduler and can instruct the first SPS to transmit release information, thereby saving the terminal's detection power consumption and reducing the network-side DCI resource overhead and the terminal's SPS downlink reception processing latency.

[0163] Figure 3 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 3, the method includes:

[0164] Step S301: The network device sends SPS PDSCH to the terminal device.

[0165] In some embodiments, the SPS PDSCH belongs to the first SPS schedule.

[0166] In some embodiments, SPS PDSCH is used to indicate whether the first SPS schedule is released.

[0167] Optionally, the alternative implementations of step S301 can be found in the alternative implementations shown in Figures 2A to 2I, which will not be repeated here.

[0168] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0169] This disclosure proposes a communication scheme in which a network device sends an SPS PDSCH to a terminal device. The SPS PDSCH belongs to the first SPS scheduler and can instruct the first SPS to transmit release information, thereby saving the terminal's detection power consumption and reducing the network-side DCI resource overhead and the terminal's SPS downlink reception processing latency.

[0170] The following are some exemplary specific solutions proposed in the embodiments of this disclosure:

[0171] This embodiment of the disclosure reuses a portion of the OFDM symbols occupied by the SPS PDSCH to indicate SPS transmission release information. By superimposing the power domain or energy domain of the portion of OFDM symbols occupied by the SPS PDSCH to carry the SPS scheduling release information, the detection power consumption of the terminal device is saved, while reducing the DCI resource overhead on the network side and the processing delay of the SPS downlink reception of the terminal device.

[0172] Method Overview:

[0173] This disclosure proposes a novel method for indicating SPS transmission release information based on PDSCH superimposed modulation. Compared to the prior art, which uses the scrambled CS-RNTI and verification field corresponding to the CRC of the DCI to indicate the SPS PDSCH scheduling release for a specific terminal device or group of terminal devices, the key point of this disclosure lies in how to carry 1 bit of SPS PDSCH scheduling release information through superimposed modulation.

[0174] The key point of this invention—how to schedule and release information by superimposing modulation to carry 1 bit of SPS PDSCH—will be explained in detail below.

[0175] At least one OFDM symbol is selected from the SPS PDSCH that already carries modulation and coding bits, and superimposed with amplitude modulation or energy modulation. The superimposed OFDM symbol carries 1 bit of SPS PDSCH scheduling and release information. The superposition modulation circled in Figure 2I can include two steps:

[0176] Step 1: Mapping the SPS PDSCH to the time-frequency resources includes the modulation and coding bits containing the SPS information sent to the terminal device. Referring to the existing physical resource mapping method in NR, the modulation and coding bits {+1,-1,-1,+1,…} containing the terminal device's SPS information can be physically mapped in the order of time domain first, then frequency domain. As an example, in Figure 2B, one grid point in the time domain represents one OFDM Symbol (OS), and one grid point in the frequency domain represents one Resource Element (RE). The specific physical resource mapping method is shown in Figure 2B. The modulation and coding bits {+1,-1,-1,+1,…} are mapped sequentially from the smallest RE number to the largest RE number M on the first OS, following the direction indicated by the black arrow. Then, they are mapped sequentially from the smallest RE number to the largest RE number on the second OS, and so on, until the last modulation and coding bit is mapped on the Nth OS.

[0177] Step 2: Select at least one OFDM symbol on the SPS PDSCH with completed modulation and coding bit mapping for superposition of amplitude modulation or energy modulation. The specific superposition method depends on the number of OFDM symbols selected. The methods for superposition modulation on different OFDM symbols will be described below.

[0178] Superimposed on an OFDM symbol

[0179] When an OFDM symbol is selected for amplitude modulation or energy modulation from the SPS PDSCH (denoted as the first time-frequency resource) after completing the modulation-coded bit mapping, the values ​​in the amplitude or energy domain can represent two states. One state is used to carry SPS scheduling release information, and the other state is not used to carry SPS scheduling release information. For example, when the selected OFDM symbol is the last OFDM symbol occupied by the SPS PDSCH after completing the modulation-coded bit mapping (denoted as the first symbol), all M REs corresponding to the first symbol are superimposed modulation. As shown in Figure 2D, 1*M time-frequency resources in a specific region are superimposed modulation to carry SPS scheduling release information. As shown in Figure 2C, the 1*M time-frequency resources of the last OS in the white region are not superimposed modulation and are not used to carry SPS scheduling release information. For example, assuming the power of each RE in the white region is P, and the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol carries SPS scheduling release information by different power levels. When the terminal device detects that the RE power level on the first symbol is close to P, it considers that the current first symbol does not carry SPS scheduling release information and can continue to receive the PDSCH at the next candidate time domain position (e.g., PDSCH#3 in Figure 2I); when ...). When the current first symbol is considered to carry SPS scheduling release information, the PDSCH at the next candidate time domain position will no longer be received. Furthermore, the information carried by the two states can be swapped. For ease of understanding, this superposition can be referenced to OOK high / low level modulation.

[0180] Superimposed on multiple OFDM symbols

[0181] When two OFDM symbols are selected from the SPS PDSCH (denoted as the first time-frequency resource) after the modulation and coding bit mapping is completed for amplitude modulation or energy modulation, the values ​​in the amplitude domain or energy domain can represent two states. One state is used to carry SPS scheduling release information, and the other state is not used to carry SPS scheduling release information.

[0182] For example, when the two selected OFDM symbols are the last two OFDM symbols occupied by the SPS PDSCH that completes the modulation and coding bit mapping (denoted as the first symbol group), all M REs corresponding to the first symbol group are superimposed modulation. As shown in Figure 2E, 2*M time-frequency resources in a specific region are superimposed modulation to carry SPS scheduling release information. As shown in Figure 2C, the 2*M time-frequency resources of the last two OSs in the white region are not superimposed modulation and are not used to carry SPS scheduling release information. For example, assuming the power of each RE in the white region is P, and the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol group carries SPS scheduling release information by different power levels. When the terminal device detects that the RE power level on the first symbol group is close to P, it considers that the current first symbol group does not carry SPS scheduling release information and can continue to receive the PDSCH at the next candidate time domain position (e.g., PDSCH#3 in Figure 2I); when ...). When the current first symbol group carries SPS scheduling release information, it is assumed that the PDSCH at the next candidate time domain position will no longer be received. Furthermore, the information carried by the two states can be swapped. For ease of understanding, this superposition can be referenced to OOK high / low level modulation.

[0183] For example, when the two selected OFDM symbols are the last two OFDM symbols occupied by the SPS PDSCH that completes the modulation and coding bit mapping (denoted as the first symbol group), all M REs corresponding to the first symbol group are superimposed modulation. As shown in Figures 2F and 2G, partial superimposed modulation is performed on the 2*M time-frequency resources of the first symbol group to carry or not carry SPS scheduling release information. As shown in Figure 2F, when the superimposed modulation pattern is low at the beginning and high at the end, it is not used to carry SPS scheduling release information. As shown in Figure 2G, when the superimposed modulation pattern is high at the beginning and low at the end, it is used to carry SPS scheduling release information. For example, assuming the power of each RE in the white area is P, and the modulation depth of the superimposed modulation is... The power of each RE in a specific region is The terminal device can determine whether the first symbol group carries SPS scheduling release information by comparing the different power levels of the preceding and following OSs. When the terminal device detects that the RE power of the preceding OS in the first symbol group is greater than that of the following OS, it considers that the current first symbol group does not carry SPS scheduling release information and can continue to receive PDSCH at the next candidate time-domain position (e.g., PDSCH#3 in Figure 2I); when the terminal device detects that the RE power of the following OS in the first symbol group is greater than that of the preceding OS, it considers that the current first symbol group carries SPS scheduling release information and will no longer continue to receive PDSCH at the next candidate time-domain position. Furthermore, the information carried by the two patterns can be swapped. For ease of understanding, the superposition of this method can be referenced to the Manchester coding method.

[0184] In some embodiments, the base station transmits time-frequency resources that are superimposed and modulated according to a first modulation depth, to indicate whether the time-frequency resources carry SPS scheduling release information. The first modulation state of the time-frequency resources is used to map the SPS scheduling release information, while the second modulation state of the time-frequency resources is not used to map the SPS scheduling release information.

[0185] Accordingly, in some embodiments, the terminal device receives time-frequency resources that are superimposed and modulated according to a first modulation depth, and determines SPS scheduling release information based on the time-frequency resources. Specifically, the first modulation state of the time-frequency resources is used to map the SPS scheduling release information, while the second modulation state of the time-frequency resources is not used to map the SPS scheduling release information.

[0186] For the technical solution proposed in this disclosure, the terminal device does not need to blindly detect the DCI to obtain SPS scheduling release information; sequence detection can save power consumption of the terminal device. The network does not need to send the DCI carrying the SPS scheduling release information; directly reusing part of the time-frequency resources in the PDSCH can save network overhead.

[0187] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal device in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by the network device (e.g., access network device, core network functional node, core network device, etc.) in any of the above methods.

[0188] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0189] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0190] Figure 4A is a schematic diagram of the network device proposed in an embodiment of this disclosure. The network device is used to perform any of the above methods. In some embodiments, as shown in Figure 4A, the network device may include at least one of a transceiver module 5101, a processing module 5102, etc. In some embodiments, the transceiver module 5101 is configured to send a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) to a terminal device, wherein the SPS PDSCH belongs to a first SPS schedule; wherein the SPS PDSCH is used to indicate whether the first SPS schedule is released. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be described in detail here.

[0191] Figure 4B is a schematic diagram of the structure of a terminal device proposed in an embodiment of this disclosure. The terminal device is used to execute any of the above methods. In some embodiments, as shown in Figure 4B, the terminal device may include at least one of a transceiver module 5201, a processing module 5202, etc. In some embodiments, the transceiver module is configured to receive a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) sent by a network device, wherein the SPS PDSCH belongs to a first SPS schedule; wherein the SPS PDSCH is used to indicate whether the first SPS schedule is released. Optionally, the transceiver module is used to execute the communication steps such as sending and / or receiving performed by the terminal device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to execute other steps performed by the terminal device in any of the above methods, which will not be described in detail here.

[0192] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0193] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0194] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0195] Figure 5A is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be the network device or terminal device described above. Specifically, it can be a network device (e.g., access network device), a terminal device (e.g., user equipment), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal device in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0196] As shown in Figure 5A, the communication device 6100 is used to execute any of the above methods. In some embodiments, the communication device 6100 includes one or more processors 6101. The processor 6101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to execute any of the above methods. Optionally, one or more processors 6101 are used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0197] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceivers 6102 perform the communication steps such as sending and / or receiving in the above method, and the processor 6101 performs other processing steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, sending unit, transmitter, sending circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0198] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data and / or instructions. Optionally, one or more processors 6101 are used to invoke instructions stored in the memory 6103 to cause the communication device 6100 to perform any of the above methods. Optionally, all or part of the memory 6103 may also be located outside the communication device 6100. In an optional embodiment, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6103 and can be used to receive data and / or instructions from the memory 6103 or other devices, and can be used to send data and / or instructions to the memory 6103 or other devices. For example, the interface circuit 6104 can read data and / or instructions stored in the memory 6103 and send the data and / or instructions to the processor 6101.

[0199] The communication device 6100 described in the above embodiments may be a network device or a terminal device, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG5A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0200] Figure 5B is a schematic diagram of the structure of the chip 6200 proposed in an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, the schematic diagram of the chip 6200 shown in Figure 5B can be referenced, but the invention is not limited thereto.

[0201] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0202] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data and / or instructions. Optionally, all or part of the memories 6203 may be located outside of chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data and / or instructions from memory 6203 or other devices, and interface circuit 6202 can be used to send data and / or instructions to memory 6203 or other devices. For example, interface circuit 6202 can read data and / or instructions stored in memory 6203 and send the data and / or instructions to processor 6201.

[0203] In some embodiments, the interface circuit 6202 performs communication steps such as sending and / or receiving in the above-described method. For example, the interface circuit 6202 performing communication steps such as sending and / or receiving in the above-described method refers to the interface circuit 6202 performing data and / or instruction interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs other processing steps.

[0204] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0205] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0206] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0207] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, Performed by a network device, the method includes: Send a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) to the terminal device, wherein the SPS PDSCH belongs to the first SPS scheduling; The SPS PDSCH is used to indicate whether the first SPS scheduler is released.

2. The method according to claim 1, characterized in that, The SPS PDSCH includes a first PDSCH portion, which occupies at least one first time unit. The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released.

3. The method according to claim 2, characterized in that, The method further includes: SPS modulation and coding bits are mapped onto the time-frequency resources occupied by the SPS PDSCH; On the time-frequency resources where SPS modulation and coding bit mapping is completed, at least one first time unit is determined; The at least one first time unit is superimposed and modulated according to the modulation depth of the first PDSCH portion.

4. The method according to claim 3, characterized in that, Superimposed modulation of the at least one first time unit based on the modulation depth of the first PDSCH portion includes: The at least one first time unit is subjected to superposition modulation in the power domain or energy domain according to the modulation depth of the first PDSCH section.

5. The method according to claim 4, characterized in that, Based on the modulation depth of the first PDSCH section, the at least one first time unit is subjected to power domain or energy domain superposition modulation, including: Based on the modulation depth of the first PDSCH section, all or part of the time-frequency resources of the at least one first time unit are superimposed and modulated in the power domain or energy domain.

6. The method according to claim 5, characterized in that, The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released, including: The value obtained by superposition and modulation in the power domain at least one first time unit represents the first state, and the first SPS scheduling release is determined. The value obtained by superposition modulation in the power domain on at least one first time unit represents the second state, and it is determined that the first SPS schedule is not released.

7. The method according to claim 5, characterized in that, The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released, including: The value obtained by superposition and modulation of the energy domain on at least one first time unit represents the third state, and the first SPS scheduling release is determined. The value obtained by superposition modulation of the energy domain on at least one first time unit represents the fourth state, and it is determined that the first SPS schedule is not released.

8. The method according to claim 6 or 7, characterized in that, The value is the resource unit (RE) power after superposition modulation at the at least one first time unit.

9. The method according to any one of claims 3 to 8, characterized in that, Mapping SPS modulation and coding bits onto the time-frequency resources occupied by the SPS PDSCH includes: SPS modulation and coding bits are mapped onto the time-frequency resources occupied by the SPS PDSCH in the order of time domain first and then frequency domain.

10. The method according to any one of claims 2 to 9, characterized in that, The first time unit is an orthogonal frequency division multiplexing (OFDM) symbol or a sub-slot.

11. The method according to any one of claims 1 to 10, characterized in that, The SPS PDSCH is used to indicate the release of the first SPS schedule, and the SPS PDSCH is the last PDSCH of the first SPS schedule.

12. A communication method, characterized in that, The method, executed by a terminal device, includes: The network device receives a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH), wherein the SPS PDSCH belongs to the first SPS scheduling. The SPS PDSCH is used to indicate whether the first SPS scheduler is released.

13. The method according to claim 12, characterized in that, The SPS PDSCH includes a first PDSCH portion, which occupies at least one first time unit. The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released.

14. The method according to claim 13, characterized in that, The at least one first time unit is superimposed and modulated according to the modulation depth. The at least one first time unit is determined on the time-frequency resources occupied by the SPS PDSCH, and the time-frequency resources have completed the SPS modulation and coding bit mapping.

15. The method according to claim 14, characterized in that, The at least one first time unit is superimposed and modulated in the power domain or energy domain according to the modulation depth.

16. The method according to claim 15, characterized in that, All or part of the time-frequency resources of the at least one first time unit are superimposed and modulated in the power domain or energy domain according to the modulation depth.

17. The method according to claim 16, characterized in that, The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released, including: The value obtained by superposition and modulation in the power domain at least one first time unit represents the first state, and the first SPS scheduling release is determined. The value obtained by superposition modulation in the power domain on at least one first time unit represents the second state, and it is determined that the first SPS schedule is not released.

18. The method according to claim 16, characterized in that, The modulation depth of the first PDSCH portion is used to indicate whether the first SPS schedule is released, including: The value obtained by superposition and modulation of the energy domain on at least one first time unit represents the third state, and the first SPS scheduling release is determined. The value obtained by superposition modulation of the energy domain on at least one first time unit represents the fourth state, and it is determined that the first SPS schedule is not released.

19. The method according to claim 17 or 18, characterized in that, The value is the resource unit (RE) power after superposition modulation at the at least one first time unit.

20. The method according to any one of claims 14 to 19, characterized in that, The time-frequency resources occupied by the SPS PDSCH have been mapped to SPS modulation and coding bits in the order of time domain first and then frequency domain.

21. The method according to claim 13 or 20, characterized in that, The first time unit is an orthogonal frequency division multiplexing (OFDM) symbol or a sub-slot.

22. The method according to any one of claims 12 to 21, characterized in that, The SPS PDSCH is used to indicate the release of the first SPS schedule, and the SPS PDSCH is the last PDSCH of the first SPS schedule.

23. A communication system, characterized in that, The method includes a network device and a terminal device, wherein the network device is configured to implement the method of any one of claims 1 to 11, and the terminal device is configured to implement the method of any one of claims 12 to 22.

24. A communication device, characterized in that, The communication device is used to perform the method according to any one of claims 1 to 11 or 12 to 22.

25. A storage medium storing instructions, characterized in that, When the instructions are executed on a communication device, the communication device performs the method of any one of claims 1 to 11 or 12 to 22.

26. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs and instructions is executed by a communication device, it implements the method of any one of claims 1 to 11 or 12 to 22.

Images