CN117296426A

CN117296426A - Information transmission method and device and storage medium

Info

Publication number: CN117296426A
Application number: CN202380010576.3A
Authority: CN
Inventors: 刘晓菲; 吴昱民
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2023-12-26

Abstract

The disclosure provides an information transmission method and device and a storage medium, wherein the method comprises the following steps: and after reselecting the first cell, the terminal determines the service data which is received for the first time and transmitted by the network equipment of the first cell as new transmission data. The method and the device can ensure that the network equipment and the terminal are consistent in understanding the newly transmitted data or the retransmitted data, avoid combination decoding errors and improve the reliability of service data transmission.

Description

Information transmission method and device and storage medium

Technical Field

The disclosure relates to the field of communication, and in particular, to an information transmission method and device, and a storage medium.

Background

Currently, with the development of New Radio (NR) services, multiple services such as multimedia broadcast multicast service (Multimedia Broadcast and Multicast Service, MBMS), multicast broadcast service (Multicast Broadcast Service, MBS) and the like may be supported.

Disclosure of Invention

In order to improve reliability of service data transmission, an embodiment of the disclosure provides an information transmission method, an information transmission device and a storage medium.

According to a first aspect of an embodiment of the present disclosure, there is provided an information transmission method, including:

And after reselecting the first cell, the terminal determines the service data which is received for the first time and transmitted by the network equipment of the first cell as new transmission data.

According to a second aspect of the embodiments of the present disclosure, there is provided an information transmission method, including:

and transmitting service data to a terminal, so that after the terminal reselects to a first cell, determining the service data transmitted by network equipment which receives the first cell for the first time as new transmission data.

According to a third aspect of embodiments of the present disclosure, there is provided a terminal comprising:

and the processing module is configured to determine the service data transmitted by the network equipment which receives the first cell as new transmission data after reselecting to the first cell.

According to a fourth aspect of embodiments of the present disclosure, there is provided a network device comprising:

and the receiving and transmitting module is configured to transmit service data to the terminal, so that after the terminal reselects to a first cell, the service data transmitted by the network equipment which receives the first cell for the first time is determined to be new transmission data.

According to a fifth aspect of embodiments of the present disclosure, there is provided a terminal comprising:

one or more processors;

wherein the terminal is configured to perform the information transmission method of any one of the first aspects.

According to a sixth aspect of embodiments of the present disclosure, there is provided a network device comprising:

one or more processors;

wherein the network device is configured to perform the method of information transfer behavior of any of the second aspects.

According to a seventh aspect of embodiments of the present disclosure, there is provided a communication system, including a terminal configured to implement the information transmission method of any one of the first aspects, and a network device configured to implement the information transmission method of any one of the second aspects.

According to an eighth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the information transmission method according to any one of the first or second aspects.

In the embodiment of the disclosure, after the terminal reselects to the first cell, the service data transmitted by the network device that receives the first cell for the first time may be determined as new transmission data. And the network equipment and the terminal are ensured to understand the new transmission data or the retransmission data consistently, so that the combination decoding error is avoided, and the reliability of service data transmission is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exemplary schematic diagram of an architecture of a communication system provided in accordance with an embodiment of the present disclosure.

Fig. 2A is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 2B is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 3A is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 3B is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 3C is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 3D is an exemplary interactive schematic diagram of an information transmission method provided according to an embodiment of the present disclosure.

Fig. 4A is an exemplary interaction diagram of a terminal provided in accordance with an embodiment of the present disclosure.

Fig. 4B is an exemplary interaction diagram of a network device provided in accordance with an embodiment of the present disclosure.

Fig. 5A is an exemplary interaction diagram of a communication device provided in accordance with an embodiment of the present disclosure.

Fig. 5B is an exemplary interaction schematic of a chip provided in accordance with an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of at least one of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various messages, these messages should not be limited to these terms. These terms are only used to distinguish one type of message from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

The embodiment of the disclosure provides an information transmission method, an information transmission device and a storage medium.

In a first aspect, an embodiment of the present disclosure provides an information transmission method, including:

In the above embodiment, after the terminal reselects to the first cell, the service data transmitted by the network device that receives the first cell for the first time may be determined as new transmission data. And the network equipment and the terminal are ensured to understand the new transmission data or the retransmission data consistently, so that the combination decoding error is avoided, and the reliability of service data transmission is improved.

With reference to some embodiments of the first aspect, in some embodiments, the method further includes:

receiving a first new data indicator NDI sent by the network equipment of a first cell, wherein the first NDI is associated with the service data transmitted by the network equipment of the first cell;

and storing the first NDI.

In the above embodiment, the terminal may receive and store the first NDI sent by the network device of the first cell, so as to determine whether the new service data transmitted by the network device of the first cell is new transmission data or retransmission data based on the new second NDI provided by the network device of the first cell and the stored first NDI, thereby ensuring that the understanding of the network device and the terminal on the new transmission data or retransmission data is consistent, and improving the reliability of service transmission.

receiving a second NDI sent by the network equipment of the first cell, wherein the second NDI is associated with new service data transmitted by the network equipment of the first cell;

and determining new service data transmitted by the network equipment of the first cell as new transmission data or retransmission data based on the first NDI and the second NDI.

In the above embodiment, the terminal may determine whether the new service data transmitted by the network device of the first cell is new transmission data or retransmission data according to the new second NDI and the stored first NDI sent by the network device of the first cell, so as to ensure that the network device is consistent with the understanding of the terminal on the new transmission data or retransmission data, and improve the reliability of service transmission.

and determining the service data transmitted by the network equipment of the first cell to be received for the first time based on the scheduling indication information sent by the network equipment of the first cell.

In the above embodiment, the terminal may determine, based on the scheduling indication information sent by the network device of the first cell, that the service data sent by the network device of the first cell is received for the first time, so as to ensure that the network device is consistent with the terminal in understanding the new transmission data or the retransmission data, and improve the reliability of service transmission.

With reference to some embodiments of the first aspect, in some embodiments, the determining, as the new transmission data, service data transmitted by the network device that first receives the first cell includes any one of the following:

Initializing a first NDI, the first NDI being associated with the traffic data transmitted by the network device of the first cell;

and emptying the HARQ buffer associated with the service.

In the above embodiment, the terminal may initialize the first NDI and/or empty the HARQ buffer associated with the service, so as to ensure the reliability of service transmission.

With reference to some embodiments of the first aspect, in some embodiments, the initializing the first NDI includes at least one of:

determining the first NDI flip;

and deleting a third NDI, wherein the third NDI is a historical NDI stored before the terminal reselects to the first cell.

In the above embodiment, when the terminal initializes the first NDI, it may determine that the first NDI is turned over, and delete a third NDI, where the third NDI is a historical NDI stored before the terminal reselects to the first cell, so as to ensure reliability of service transmission.

With reference to some embodiments of the first aspect, in some embodiments, the terminal is at least one of:

a terminal that has joined a service session;

a terminal that receives traffic data in a radio resource control RRC non-connected state is supported.

In the above embodiment, the terminal may include, but is not limited to, a terminal that has joined a service session, and/or a terminal that supports receiving service data in a radio resource control RRC non-connected state, so as to improve reliability of the service session and improve reliability of receiving service data in the RRC non-connected state.

With reference to some embodiments of the first aspect, in some embodiments, the first cell is a cell supporting the terminal to receive the service data in an RRC non-connected state.

In the above embodiment, the first cell that the terminal enters after reselecting may be a cell supporting the terminal to receive the service data in the RRC non-connected state, so as to improve reliability of the terminal to receive the service data in the RRC non-connected state.

With reference to some embodiments of the first aspect, in some embodiments, the service includes a multicast service.

In the embodiment, the reliability of multicast service data transmission is improved.

In a second aspect, an embodiment of the present disclosure provides an information transmission method, including:

In the above embodiment, the network device of the first cell may transmit service data to the terminal in the first cell, and after the terminal reselects to the first cell, determine the service data transmitted by the network device of the first cell received for the first time as new transmission data. The network device is consistent with the terminal to understand the new transmission data or the retransmission data, thereby improving the reliability of service data transmission.

With reference to some embodiments of the second aspect, in some embodiments, the method further includes:

a first new data indicator NDI is sent to the terminal to cause the terminal to store the first NDI.

and sending a second NDI to the terminal, wherein the second NDI is associated with new service data transmitted by the network equipment of the first cell, so that the terminal determines the new service data as new transmission data or retransmission data based on the first NDI and the second NDI.

and sending scheduling indication information to the terminal, wherein the scheduling indication information is used for determining that the service data transmitted by the network equipment of the first cell is received for the first time by the terminal.

With reference to some embodiments of the second aspect, in some embodiments, the terminal is at least one of:

a terminal that has joined a service session;

and supporting the terminal receiving the service data in the Radio Resource Control (RRC) non-connection state.

With reference to some embodiments of the second aspect, in some embodiments, the first cell is a cell supporting the terminal to receive service data in an RRC non-connected state.

With reference to some embodiments of the second aspect, in some embodiments, the traffic comprises multicast traffic.

In a third aspect, an embodiment of the present disclosure proposes a terminal, including:

In a fourth aspect, an embodiment of the present disclosure proposes a network device, including:

In a fifth aspect, an embodiment of the present disclosure proposes a terminal, including:

one or more processors;

In a sixth aspect, embodiments of the present disclosure provide a network device, including:

one or more processors;

In a seventh aspect, an embodiment of the present disclosure proposes a communication system, including a terminal configured to implement the information transmission method of any one of the first aspects, and a network device configured to implement the information transmission method of any one of the second aspects.

In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the information transmission method according to any one of the first or second aspects.

It will be appreciated that the network device, the communication system, the storage medium, and the computer program described above are all configured to perform the methods set forth in the embodiments of the present disclosure. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

The embodiment of the disclosure provides an information transmission method, an information transmission device and a storage medium. In some embodiments, terms such as an information transmission method and an information processing method, a communication method, and the like may be replaced with each other, terms such as an information transmission device and an information processing device, a communication device, and the like may be replaced with each other, and terms such as an information processing system, a communication system, and the like may be replaced with each other.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

In some embodiments, "A, B at least one of", "a and/or B", "in one case a, in another case B", "in response to one case a", "in response to another case B", and the like, may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments, execution is selected from a and B (a and B are selectively executed); in some embodiments a and B (both a and B are performed). Similar to that described above when there are more branches such as A, B, C.

In some embodiments, the description modes such as "a or B" may include the following technical schemes according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, the apparatuses and devices may be interpreted as entities, or may be interpreted as virtual, and the names thereof are not limited to those described in the embodiments, and may also be interpreted as "devices (apparatuses)", "circuits", "network elements", "nodes", "functions", "units", "components", "sections", "systems", "networks", "entities", "bodies", and so on in some cases.

In some embodiments, a "network" may be interpreted as an apparatus comprised in the network, e.g. an access network device, a core network device, etc.

In some embodiments, the "access network device (access network device, AN device)" may also be referred to as a "radio access network device (radio access network device, RAN device)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", and in some embodiments may also be referred to as a "node)", "access point (access point)", "transmission point (transmission point, TP)", "Reception Point (RP)", "transmission and/or reception point (transmission/reception point), TRP)", "panel", "antenna array", "cell", "macrocell", "microcell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier (component carrier)", bandwidth part (BWP), etc.

In some embodiments, the acquisition of data, information, etc. may comply with laws and regulations of the country of locale.

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure.

As shown in fig. 1, a communication system 100 includes a terminal 101 and a network device 102.

In some embodiments, the terminal 101 includes at least one of a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), for example, but is not limited thereto.

In some embodiments, network device 102 may include, but is not limited to, an access network device 102-1, a core network device 102-2.

In some embodiments, the access network device 102-1 is, for example, a node or device that accesses a terminal to a wireless network, and the access network device may include at least one of an evolved NodeB (eNB), a next generation NodeB (next generation eNB, ng-eNB), a next generation NodeB (gNB), a NodeB (NB), a Home NodeB (HNB), a home NodeB (home evolved nodeB, heNB), a wireless backhaul device, a wireless network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a baseband unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open base station (Open RAN), a Cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the access network device 102-1 may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the access network device, where functions of a part of the protocol layers are centrally controlled by the CU, and functions of a part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU, but is not limited thereto.

In some embodiments, the core network device 102-2 may be a device, including one or more network elements, etc., or may be multiple devices or groups of devices. The network element may be virtual or physical. The core network comprises, for example, at least one of an evolved packet core (Evolved Packet Core, EPC), a 5G core network (5G Core Network,5GCN), a next generation core (Next Generation Core, NGC).

In some embodiments, the technical solutions of the present disclosure may be applied to an Open RAN architecture, where an access network device or an interface in an access network device according to the embodiments of the present disclosure may become an internal interface of the Open RAN, and flow and information interaction between these internal interfaces may be implemented by using software or a program.

In some embodiments, terminal 101 is connected to core network device 102-2 through access network device 102-1.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies may be arbitrary, and the respective bodies may be physical or virtual, and the connection relationship between the respective bodies is examples, and the respective bodies may not be connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

The embodiments of the present disclosure may be applied to long term evolution (Long Term Evolution, LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G New air interface (NR), future wireless access (Future Radio Access, FRA), new wireless access technology (New-Radio Access Technology, RAT), new wireless (New Radio, NR), new wireless access (New Radio access, NX), future generation wireless access (Future generation Radio access, FX), global System for Mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (Ultra Mobile Broadband, UMB), IEEE 802.11 (registered trademark), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra WideBand (Ultra-wide, UWB), bluetooth (Bluetooth) network (Public Land Mobile Network), PLMN, a network using the same, and other systems based on the same. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

Fig. 2A is an interactive schematic diagram illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 2A, an embodiment of the present disclosure relates to an information transmission method, which includes:

in step S2101, the network device 102 transmits a first new data indicator (New Data Indicator, NDI) to the terminal 101.

In some embodiments, the network device 102 may be a network device of a first cell. The first cell may be, for example, a cell that the terminal 101 enters after performing a cell reselection.

In some embodiments, the first cell may be a cell supporting the terminal 101 to receive traffic data in an RRC non-connected state.

Illustratively, the traffic includes multicast traffic.

The first cell may be, for example, a cell supporting the terminal 101 to receive service data in an RRC inactive state. For example, the first cell may be a cell supporting the terminal 101 to receive multicast service data in an RRC inactive state.

The first cell may be, for example, a cell supporting the terminal 101 to receive traffic data in an RRC idle state. For example, the first cell may be a cell supporting the terminal 101 to receive multicast service data in an RRC idle state.

The first cell may be, for example, a cell supporting the terminal 101 to receive service data in an RRC inactive state or an RRC idle state. For example, the first cell may be a cell supporting the terminal 101 to receive multicast service data in an RRC inactive state or an RRC idle state.

In some embodiments, the terminal 101 may receive the first NDI.

In some embodiments, the network device 102 may carry the first NDI via downlink control information (Downlink Control Information, DCI).

Illustratively, the DCI may be used to schedule traffic data for a terminal.

Among other things, the services of the present disclosure may include, but are not limited to, multicast services.

The service of the present disclosure may include a broadcast service or any other service that allows the terminal 101 to perform service data reception in an RRC non-connected state.

In some embodiments, the state of terminal 101 includes, but is not limited to, any of the following: an RRC connected state; RRC unconnected state.

The RRC connected state may refer to that an RRC connection is established between the terminal 101 and the network device 102.

Herein, the RRC non-connected state may refer to no RRC connection between the terminal 101 and the network device 102, and illustratively, the RRC non-connected state may include, but is not limited to, an RRC IDLE state (IDLE), an RRC INACTIVE state (INACTIVE).

Illustratively, the network device 102 schedules service data for the terminal 101 through DCI, where the DCI carries a first NDI, and the terminal 101 may determine that the service data scheduled by the network device 102 is new transmission data or retransmission data in combination with the NDI stored previously and the first NDI received currently.

It will be appreciated that the newly transmitted data is traffic data that the network device 102 first scheduled a transmission for the terminal 101. The retransmission data is service data retransmitted by the network device 102 for the terminal 101 according to the result of the hybrid automatic repeat request (hybrid automatic repeat request, HARQ) reported by the terminal 101 and/or other terminals.

Illustratively, the traffic comprises multicast traffic, DCI is used to schedule multicast traffic data for the terminal 101.

In some embodiments, the network device 102 may also carry the first NDI via other signaling or messages, which is not limited by the present disclosure.

In step S2102, the network device 102 transmits service data to the terminal 101.

In some embodiments, terminal 101 receives the traffic data.

In some embodiments, terminal 101 receives the traffic data based on a schedule of DCI.

In some embodiments, after the terminal 101 reselects to the first cell, the service data transmitted by the network device 102 of the first cell is received.

Illustratively, the services include multicast services, and the terminal 101 may receive multicast service data transmitted by the network device 102.

Illustratively, the service includes a multicast service, and after the terminal 101 reselects to the first cell, multicast service data transmitted by the network device 102 of the first cell is received.

Illustratively, the traffic includes multicast traffic.

In step S2103, the network apparatus 102 transmits scheduling instruction information to the terminal 101.

In some embodiments, the terminal 101 receives the scheduling indication information.

In some embodiments, the network device 102 is a network device of the first cell, and after determining that the terminal 101 reselects to the first cell, sends the scheduling indication information to the terminal 101.

In some embodiments, the scheduling indication information is used for the terminal 101 to determine that traffic data transmitted by the network device 102 was first received.

Illustratively, the network device 102 sends the scheduling indication information to the terminal 101 via a separate signaling.

The network device 102 illustratively carries the scheduling indication information in other signaling or messages sent to the terminal. For example, the network device 102 may carry the scheduling indication information in a scheduling message or a scheduling signaling sent to the terminal 101.

In some embodiments, the name of the scheduling indication information is not limited, and is, for example, an indication message, a first signaling, a first message, or the like.

In step S2104, after the terminal 101 reselects to the first cell, the service data transmitted by the network device 102 that has received the first cell for the first time is determined as new transmission data.

In some embodiments, the network device 102 does not perform the above step S2103, and after the terminal 101 reselects to the first cell, determines, based on a predefined rule or a protocol-agreed manner, the service data transmitted by the network device 102 that first received the first cell.

In some embodiments, the network device 102 performs the step S2103, and after the terminal 101 reselects to the first cell, the terminal 101 may receive the scheduling indication information sent by the network device 102, and determine, based on the scheduling indication information, service data transmitted by the network device 102 that first receives the first cell.

In some embodiments, after the terminal 101 receives the service data transmitted by the network device 102 of the first cell for the first time, the service data is determined to be new transmission data.

In one example, the terminal 101 determining the traffic data as newly transmitted data may include, but is not limited to, initializing a first NDI. The first NDI is associated with traffic data transmitted by the network device 102.

Illustratively, initializing the first NDI may include, but is not limited to, at least one of: determining a first NDI flip; and deleting the third NDI.

Wherein the third NDI is a historical NDI stored by the terminal before reselecting to the first cell.

Illustratively, the terminal 101 determines a first NDI flip.

Wherein the terminal 101 determines that the NDI is flipped when it is determined that the currently received indication of the NDI is different from the previously stored indication of the NDI. In the disclosed embodiments, the terminal 101 determines that the indication of the first NDI toggles relative to the indication of the NDI stored on the terminal 101, whether or not the indication of the first NDI is the same relative to the indication of the NDI stored on the terminal 101. For example, the terminal 101 may directly ignore the indication of the first NDI sent by the network device 102 and determine that the first NDI is flipped.

For example, the terminal 101 reselects to the first cell, and in response to receiving traffic data, e.g., multicast traffic data, transmitted by the network device 102 of the first cell for the first time, the first NDI may be considered flipped and this transmission considered new, at which point for the terminal 101, the terminal 101 ignores the indication of the first NDI, no matter what the first NDI indicates.

Illustratively, the terminal 101 may delete the previously stored third NDI. The third NDI is a historical NDI stored by the terminal before reselection to the first cell.

For example, the terminal 101 reselects to the first cell, deletes the third NDI stored previously, and in response to receiving the service data transmitted by the network device 102 of the first cell for the first time, for example, multicast service data, since no NDI has been stored previously by the terminal 101, the received service data can be regarded as new transmission data no matter what the first NDI indicates.

In one example, the terminal 101 determining the traffic data as newly transmitted data may include, but is not limited to, flushing a traffic associated HARQ buffer.

Illustratively, the traffic may include multicast traffic and the terminal 101 may empty a HARQ buffer associated with the multicast traffic.

The terminal 101 illustratively only has a service-associated HARQ buffer.

Illustratively, the terminal 101 empties all HARQ buffers, including the traffic associated HARQ buffer.

In one example, the terminal 101 determining the traffic data as newly transmitted data may include, but is not limited to, initializing a first NDI and flushing a HARQ buffer associated with the traffic.

In some embodiments, terminal 101 may be a terminal that has joined a service session.

The terminal 101 may be, for example, a terminal that has joined a multicast service session.

In some embodiments, the terminal 101 may be a terminal supporting reception of the service data in a radio resource control RRC non-connected state.

For example, the terminal 101 may be a terminal supporting reception of service data in an RRC inactive state, for example, the terminal 101 may be a terminal supporting reception of multicast service data in an RRC inactive state.

For example, the terminal 101 may be a terminal supporting reception of service data in an RRC idle state, for example, the terminal 101 may be a terminal supporting reception of multicast service data in an RRC idle state.

For example, the terminal 101 may be a terminal supporting reception of service data in an RRC inactive state or an RRC idle state, and for example, the terminal 101 may be a terminal supporting reception of multicast service data in an RRC inactive state or an RRC idle state.

In step S2105, the terminal 101 stores a first NDI.

In some embodiments, the terminal 101 may store the first NDI transmitted by the network device 102. The first NDI is associated with traffic data transmitted by the network device 102 of the first cell.

Wherein, the association of the first NDI with the service data transmitted by the network device 102 of the first cell may be understood as: the terminal 101 determines that the service data is new transmission data or retransmission data according to at least the indication of the first NDI.

In some embodiments, the terminal 101 determines the traffic data received for the first time from the network device 102 as new traffic data and stores the first NDI.

Illustratively, the terminal 101 deletes the third NDI, and may directly store the first NDI.

Illustratively, the terminal 101 ignores the first NDI indication sent by the network device 102, determines the first NDI flip, and further, the terminal 101 may store the first NDI. In this case, although the terminal 101 determines the received service data as new transmission data, the terminal 101 stores the new transmission data regardless of what the first NDI indicates. For example, the bit value of the first NDI is "1" or "0", and the terminal directly stores the bit value of the first NDI as "1" or "0".

Illustratively, the terminal 101 has emptied the service-associated HARQ buffer, and the terminal 101 may directly store the first NDI.

In some embodiments, the purpose of storing the first NDI is to determine that the new traffic data is new or retransmitted when the network device 102 subsequently transmits the new traffic data.

Illustratively, the terminal 101 receives again a new NDI sent by the network device 102, which is a second NDI, where the second NDI is associated with new traffic data transmitted by the network device 102. The association of the second NDI with the new service data transmitted by the network device 102 may mean that the terminal 101 determines, at least according to the indication of the second NDI, that the new service data is new transmission data or retransmission data.

The terminal 101 may compare whether the already stored first NDI and the second NDI are identical, and if they are identical, for example, the bit values of the already stored first NDI and the second NDI are both "1" or both "0", the terminal 101 determines that the new service data transmitted by the network device 102 is retransmission data. If there is a discrepancy, for example, the bit value of the first NDI is "1", the bit value of the second NDI is "0", or the bit value of the first NDI is "0", the bit value of the second NDI is "1", the terminal 101 determines that the new traffic data transmitted by the network device 102 is new transmission data.

In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "instruction", "command", "channel", "parameter", "field", "symbol", "codebook", "code word", "code point", "bit", "data", "program", "chip", and the like may be replaced with each other.

In some embodiments, terms "uplink", "physical uplink", and the like may be interchanged.

In some embodiments, terms "downlink", "physical downlink", and the like may be interchanged.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "bi-directional," "send and/or receive," and the like may be used interchangeably.

In some embodiments, "acquire," "obtain," "receive," "transmit," "bi-directional transmit," "send and/or receive" may be used interchangeably and may be interpreted as receiving from other principals, acquiring from protocols, acquiring from higher layers, processing itself, autonomous implementation, etc.

In some embodiments, terms such as "specific (specific)", "predetermined", "preset", "set", "indicated", "certain", "arbitrary", "first", "specified", and the like may be replaced with each other, and "specific a", "predetermined a", "preset a", "set a", "indicated a", "certain a", "arbitrary a", "first a" may be interpreted as a predetermined a in a protocol or the like, may be interpreted as a obtained by setting, configuring, or indicating, or the like, may be interpreted as specific a, certain a, arbitrary a, or first a, or the like, but are not limited thereto.

In some embodiments, the information transmission method according to the embodiments of the present disclosure may include at least one of step S2101 to step S2105. For example, step S2101 may be implemented as a separate embodiment, step S2102 may be implemented as a separate embodiment, step S2101+s2102 may be implemented as a separate embodiment, step S2103 may be implemented as a separate embodiment, step S2104 may be implemented as a separate embodiment, step S2103+s2104 may be implemented as a separate embodiment, step S2105 may be implemented as a separate embodiment, and steps S2101 to S2103 may be implemented as a separate embodiment, but are not limited thereto.

In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, when the terminal 101 does not need to determine that the service data is new transmission data or retransmission data based on the indication of NDI, step S2101 may not be performed.

In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, if the network device 102 does not have traffic data to transmit, step S2102 may not be performed.

In some embodiments, step S2103 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the terminal 101 determines that the service data transmitted by the network device 102 is received for the first time based on a predefined rule or protocol convention, then step S2103 may not be performed.

In some embodiments, step S2104 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the cell reselected by the terminal 101 does not support the terminal 101 to receive the service data in the RRC non-connected state, and the terminal 101 enters the RRC non-connected state, and the terminal 101 does not receive the service data transmitted by the network device 102, and further, does not determine that the service data is new transmission data or retransmission data, then step S2104 may not be performed.

In some embodiments, step S2105 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the terminal 101 does not rely on NDI indication to determine that the service data is new transmission data or retransmission data, and step S2105 may not be performed at this time.

In some embodiments, the present disclosure does not limit the order of execution of steps S2102, S2103.

In some embodiments, steps S2101 through S2105 (optionally, one or more of these steps may be omitted or replaced in different embodiments).

In the above embodiment, it can be ensured that the network device and the terminal understand the new transmission data or the retransmission data consistently, so as to avoid combination decoding errors and improve the reliability of service data transmission.

Fig. 2B is an interactive schematic diagram illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 2B, an embodiment of the present disclosure relates to an information transmission method, which includes:

in step S2201, the network device 102 transmits service data to the terminal 101.

In some embodiments, terminal 101 receives the traffic data.

In some embodiments, the services include multicast services, and the terminal 101 may receive multicast service data transmitted by the network device 102.

In some embodiments, the service comprises a multicast service, and after the terminal 101 reselects to the first cell, the multicast service data transmitted by the network device 102 of the first cell is received.

The first cell may be, for example, a cell supporting the terminal 101 to receive service data in an RRC inactive state.

The first cell may be, for example, a cell supporting the terminal 101 to receive traffic data in an RRC idle state.

The first cell may be, for example, a cell supporting the terminal 101 to receive service data in an RRC inactive state or an RRC idle state.

In step S2202, the terminal 101 determines the service data transmitted by the network device 102 as new transmission data or retransmission data.

In some embodiments, the network device 102 transmits the traffic data in a repeated transmission (repetition) manner. The service data may be multicast service data, for example, service data transmitted through a multicast MBS transmission channel (MBS Transmission Channel, MTCH).

In some embodiments, whether or not the terminal 101 first receives the service data transmitted by the network device 102, the received service data may be determined to be new transmission data or retransmission data based on the indication of the RRC message sent by the network device 102.

For example, the RRC message indicates that the repetition number is 4, and also indicates that the repetition is currently 1 st time, and the terminal determines that the received service data is new transmission data.

For another example, the RRC message indicates that the repetition number is 4, and also indicates that the repetition number is currently 2, 3 or 4, and the terminal determines that the received service data is retransmission data.

In some embodiments, whether or not the terminal 101 first receives the service data transmitted by the network device 102, the received service data may be determined to be new transmission data or retransmission data based on the scheduling of DCI sent by the network device 102.

For example, the DCI indicates that the 1 st repetition of 4 repetitions is currently scheduled, and the terminal determines the received service data as new transmission data.

For another example, the DCI indicates that the 2 nd, 3 rd or 4 th repetition terminal of the 4 repetitions is currently scheduled to determine received service data as retransmission data.

In some embodiments, the terminal 101 may determine that the received service data is new transmission data or retransmission data based on the indication of the RRC message and the scheduling of the DCI.

For example, the network device 102 indicates that the repetition number is 4 through the RRC message, the dci indicates that the n-th repetition is currently scheduled, and when n is 1, the terminal 101 determines that the service data is new transmission data, and when n is 2, 3, or 4, the terminal 101 determines that the service data is retransmission data.

In some embodiments, the information transmission method according to the embodiments of the present disclosure may include at least one of step S2201 to step S2202. For example, step S2201 may be implemented as an independent embodiment, step S2202 may be implemented as an independent embodiment, and step s2201+s2202 may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, step S2201 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the network device 102 does not need the service data transmitted to the terminal 101, and step S2201 may not be performed. Accordingly, step S2202 may not be performed.

In some embodiments, step S2202 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the cell reselected by the terminal 101 does not support the terminal 101 to receive the service data in the RRC non-connected state, and the terminal 101 enters the RRC non-connected state, and the terminal 101 does not receive the service data transmitted by the network device 102, or does not determine that the service data received at this time is new transmission data or retransmission data, and step S2202 may not be performed.

In some embodiments, steps S2201 through S2202 (optional, one or more of these steps may be omitted or replaced in different embodiments).

In the above embodiment, the terminal may determine that the received service data is new transmission data or retransmission data according to the RRC message and/or the DCI sent by the network device, so as to ensure that the network device is consistent with the terminal in understanding the new transmission data or retransmission data, avoid error in combination decoding, and improve reliability of service data transmission.

Fig. 3A is a flow chart illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 3A, an embodiment of the present disclosure relates to an information transmission method, which may be performed by a terminal 101, the method including:

in step S3101, a first NDI is acquired.

In some embodiments, the terminal 101 may obtain the first NDI from the network device 102, but is not limited thereto, and may also receive the first NDI transmitted by other principals.

In some embodiments, the terminal 101 obtains the first NDI determined according to a predefined rule.

In some embodiments, the terminal 101 processes to obtain the first NDI.

In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the first NDI, or the terminal 101 obtains the first NDI based on a predefined rule or protocol convention, or the function is default or default.

In some embodiments, the optional implementation of step S3101 may refer to the optional implementation of step S2101 of fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In step S3102, service data is acquired.

In some embodiments, terminal 101 may obtain traffic data from network device 102, but is not limited thereto, and may also receive traffic data sent by other principals.

In some embodiments, the terminal 101 obtains the traffic data determined according to predefined rules.

In some embodiments, the terminal 101 processes to obtain the traffic data.

In some embodiments, step S3102 is omitted, and terminal 101 autonomously implements the function indicated by the service data, or terminal 101 obtains the service data based on a predefined rule or protocol convention, or the function is default or default.

Wherein the first NDI is associated with the service data.

In some embodiments, the optional implementation of step S3102 may refer to the optional implementation of step S2102 in fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In step S3103, scheduling instruction information is acquired.

In some embodiments, the terminal 101 may obtain the scheduling indication information from the network device 102, but is not limited thereto, and may also receive the scheduling indication information transmitted by other bodies.

In some embodiments, the terminal 101 obtains the scheduling indication information determined according to a predefined rule.

In some embodiments, the terminal 101 processes to obtain the scheduling indication information.

In some embodiments, step S3102 is omitted, and terminal 101 autonomously implements the function indicated by the scheduling indication information, or terminal 101 obtains the scheduling indication information based on a predefined rule or protocol convention, or the above-mentioned function is default or default.

In some embodiments, the optional implementation of step S3103 may refer to the optional implementation of step S2103 of fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In step S3104, the service data is determined as new transmission data or retransmission data.

In some embodiments, the terminal 101 receives the service data transmitted by the network device 102 of the first cell for the first time, and may determine the service data as new transmission data.

Alternative implementations of step S3104 may refer to alternative implementations of step S2104 of fig. 2A, and other relevant parts of the embodiment related to fig. 2A, which are not described herein.

In some embodiments, the terminal 101 may not first receive the service data transmitted by the network device 102 of the first cell, and may determine that the currently received service data is new transmission data or retransmission data according to comparing a stored NDI with a newly received NDI.

In step S3105, the first NDI is stored.

In some embodiments, the optional implementation of step S3105 may refer to the optional implementation of step S2105 of fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In some embodiments, the information transmission method according to the embodiments of the present disclosure may include at least one of step S3101 to step S3105. For example, step S3101 may be implemented as a separate embodiment, step S3102 may be implemented as a separate embodiment, step S3101+s3102 may be implemented as a separate embodiment, step S3103 may be implemented as a separate embodiment, step S3104 may be implemented as a separate embodiment, step S3103+s3104 may be implemented as a separate embodiment, step S3105 may be implemented as a separate embodiment, and steps S3101 to S3103 may be implemented as a separate embodiment, but are not limited thereto.

In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, when the terminal 101 does not need to determine that the service data is new transmission data or retransmission data based on NDI, step S3101 may not be performed.

In some embodiments, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, if the network device 102 does not have traffic data to transmit, step S3102 may not be performed.

In some embodiments, step S3103 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, based on predefined rules or protocol conventions, the terminal 101 may not perform step S3103 when it determines that service data transmitted by the network device 102 is first received.

In some embodiments, step S3104 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the cell reselected by the terminal 101 does not support the terminal 101 to receive the service data in the RRC non-connected state, and the terminal 101 enters the RRC non-connected state, and the terminal 101 does not receive the service data transmitted by the network device 102, and further, does not determine that the service data is new transmission data or retransmission data, then step S3104 may not be performed.

In some embodiments, step S3105 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the terminal 101 does not rely on NDI indication to determine that the service data is new transmission data or retransmission data, and step S3105 may not be performed.

In some embodiments, steps S3101 through S3105 (optional, one or more of these steps may be omitted or replaced in different embodiments).

In the above embodiment, the terminal can determine the service data transmitted by the network device as new transmission data when the terminal receives the service data for the first time, so as to ensure that the understanding of the network device and the terminal on the new transmission data or retransmission data is consistent, avoid combination decoding errors, and improve the reliability of service data transmission.

Fig. 3B is a flow chart illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 3B, an embodiment of the present disclosure relates to an information transmission method, which may be performed by a terminal 101, the method including:

in step S3201, service data is acquired.

In some embodiments, the terminal 101 processes to obtain the traffic data.

In some embodiments, step S3201 is omitted, and terminal 101 autonomously implements the function indicated by the service data, or terminal 101 obtains the service data based on a predefined rule or protocol convention, or the function is default or default.

In some embodiments, the optional implementation of step S3201 may refer to the optional implementation of step S2201 in fig. 2B, and other relevant parts in the embodiment related to fig. 2B, which are not described herein.

In step S3202, the service data is determined as new transmission data or retransmission data.

In some embodiments, the optional implementation of step S3202 may refer to the optional implementation of step S2202 in fig. 2B, and other relevant parts in the embodiment related to fig. 2B, which are not described herein.

In some embodiments, the information transmission method according to the embodiments of the present disclosure may include at least one of step S3201 to step S3202. For example, step S3201 may be implemented as a separate embodiment, step S3202 may be implemented as a separate embodiment, and step s3201+s3202 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the network device 102 does not need the service data transmitted to the terminal 101, and step S3201 may not be performed. Accordingly, step S3202 may not be performed.

In some embodiments, step S3202 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the cell reselected by the terminal 101 does not support the terminal 101 to receive the service data in the RRC non-connected state, and the terminal 101 enters the RRC non-connected state, and the terminal 101 does not receive the service data transmitted by the network device 102, or does not determine that the service data received at this time is new transmission data or retransmission data, so step S3202 may not be performed.

In some embodiments, steps S3201 through S3202 (optionally, one or more of these steps may be omitted or replaced in different embodiments).

In the above embodiment, the terminal may determine that the received service data is new transmission data or retransmission data based on the RRC message or the DCI sent by the network device, so as to ensure that the network device is consistent with the terminal in understanding the new transmission data or retransmission data, avoid error in combination decoding, and improve reliability of service data transmission.

Fig. 3C is a flow chart illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 3C, embodiments of the present disclosure relate to an information transmission method that may be performed by a network device 102, the method comprising:

in step S3301, a first NDI is transmitted.

In some embodiments, the network device 102 may send the first NDI to the terminal 101.

In some embodiments, the terminal 101 receives the first NDI.

In some embodiments, the optional implementation of step S3301 may refer to the optional implementation of step S2101 in fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In step S3302, service data is transmitted.

In some embodiments, network device 102 may transmit traffic data to terminal 101.

In some embodiments, terminal 101 receives the traffic data.

In some embodiments, the optional implementation of step S3302 may refer to the optional implementation of step S2102 in fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In step S3303, scheduling instruction information is transmitted.

In some embodiments, the network device 102 may send scheduling indication information to the terminal 101.

In some embodiments, the optional implementation of step S3303 may refer to the optional implementation of step S2103 in fig. 2A, and other relevant parts in the embodiment related to fig. 2A, which are not described herein.

In some embodiments, the information transmission method according to the embodiments of the present disclosure may include at least one of step S3301 to step S3303. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, step S3301+s3302 may be implemented as an independent embodiment, step S3303 may be implemented as an independent embodiment, and steps S3301 to S3303 may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, step S3301 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, when the terminal 101 does not need to determine that the service data is new transmission data or retransmission data based on NDI, step S3301 may not be performed.

In some embodiments, step S3302 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the network device 102 does not have traffic data to transmit, and step S3302 may not be performed.

In some embodiments, step S3303 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, the terminal 101 may not perform step S3303 when it determines that the service data transmitted by the network device 102 is received for the first time based on a predefined rule or protocol convention.

In some embodiments, steps S3301-S3303 (optionally, one or more of these steps may be omitted or replaced in different embodiments).

In the above embodiment, the network device may make the terminal determine that the received service data is new transmission data or retransmission data by sending NDI to the terminal, so as to ensure that the network device is consistent with the understanding of the terminal on the new transmission data or retransmission data, avoid error in combined decoding, and improve reliability of service data transmission.

Fig. 3D is a flow chart illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 3D, embodiments of the present disclosure relate to an information transmission method that may be performed by a network device 102, the method comprising:

step S3401, transmitting service data.

In some embodiments, terminal 101 receives the traffic data.

In some embodiments, the optional implementation of step S3401 may refer to the optional implementation of step S2201 in fig. 2B, and other relevant parts in the embodiment related to fig. 2B, which are not described herein.

In some embodiments, the terminal 101 may determine that the service data is new transmission data or retransmission data based on the RRC message or DCI sent by the network device 102.

In the above embodiment, the network device may not send any NDI to the terminal, but make the terminal determine that the received service data is new transmission data or retransmission data through RRC message and/or DCI, so as to ensure that the network device is consistent with the understanding of the terminal on the new transmission data or retransmission data, avoid combination decoding error, and improve the reliability of service data transmission.

The above procedure is further illustrated as follows:

in the NR system, MBS services may be marked by MBS service identities:

temporary Mobile Group Identity (TMGI);

MBS Session identification (MBS Session ID);

MBS service flow identification (MBS QoS flow ID).

The transmission modes of the MBS service comprise the following two modes:

and (3) transmitting mode 1 (multicast transmission), wherein the terminal enters an RRC connection state to receive the receiving configuration information of the MBS service, thereby receiving the MBS service. The network device may send the receiving configuration information of the MBS service to the terminal through the terminal dedicated signaling.

Transmitting mode 2 (broadcast transmission), the terminal may receive reception configuration information of the MBS service in an RRC idle state or an RRC inactive state or an RRC connected state, and receive the MBS service. The network device may transmit the reception configuration information to the terminal through system information (e.g., SIB) and MBS control channel information (e.g., MCCH).

For a terminal in RRC connected state, it may flip based on NDI indication in DCI, and determine whether the received service data is new transmission data or retransmission data. For a terminal in an RRC non-connected state, during a cell reselection process, the terminal may miss an initial NDI indication, so that when the terminal and the network device flip according to NDI later, understanding of whether service data is new transmission data or retransmission data is inconsistent, which further results in a combination decoding error and poor service data transmission reliability.

The disclosure provides a method for determining service data as new transmission data or retransmission data when a terminal receives the service data in an RRC non-connected state.

First, when the terminal reselects to a new cell, e.g., a first cell, the terminal determines the traffic data as new transmission data in response to receiving the traffic data, e.g., multicast traffic data, transmitted by the network device of the first cell for the first time.

Based on the above description, if the DCI sent by the network device carries the NDI, the terminal stores the NDI, and determines whether the new service data is new transmission data or retransmission data based on the stored NDI and the new NDI in the subsequent data transmission process.

Based on the above description, the terminal determines the service data received for the first time as new transmission data, including at least one of the following:

initializing NDI;

the service-associated HARQ buffer (buffer) is emptied.

The terminal can determine that the service data transmitted by the network device is received for the first time according to the scheduling indication information sent by the network device.

Based on the above description, initializing the NDI includes at least one of:

1. ignoring the NDI indication in the DCI, treating the NDI as flipped (consider the NDI to have been toggled);

in embodiment 1, the terminal reselects to the first cell, and in response to receiving the service data transmitted by the network device of the first cell for the first time, for example, multicast service data, the NDI is regarded as flipped, and the service data transmitted this time is determined as new transmission data (no matter what NDI indication is carried by the DCI, the terminal ignores the NDI indication).

2. Deleting the historical NDI stored by the terminal;

in embodiment 2, the terminal reselects to the first cell, deletes the stored historical NDI, and in response to receiving the service data transmitted by the network device of the first cell for the first time, for example, multicast service data, since the historical NDI has been deleted, the terminal determines that the network side has not indicated NDI, and determines the service data received for the first time as new transmission data.

Based on the above description, the terminal may be a terminal joining a multicast service session and/or a terminal configured to receive service data in an RRC non-connected state.

Based on the above description, the first cell is a cell supporting the terminal to receive service data in the RRC non-connected state.

The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods, for example, an apparatus is provided, where the apparatus includes a unit or a module for implementing each step performed by the terminal in any of the above methods. For another example, another apparatus is also proposed, which includes a unit or module configured to implement steps performed by a network device (e.g., an access network device, a core network device, etc.) in any of the above methods.

It should be understood that the division of each unit or module in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into one physical entity or may be physically separated when actually implemented. Furthermore, units or modules in the apparatus may be implemented in the form of processor-invoked software: the device comprises, for example, a processor, the processor being connected to a memory, the memory having instructions stored therein, the processor invoking the instructions stored in the memory to perform any of the methods or to perform the functions of the units or modules of the device, wherein the processor is, for example, a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or microprocessor, and the memory is internal to the device or external to the device. Alternatively, the units or modules in the apparatus may be implemented in the form of hardware circuits, and part or all of the functions of the units or modules may be implemented by designing hardware circuits, which may be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the units or modules are implemented by designing the logic relationships of elements in the circuit; for another example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (programmable logic device, PLD), for example, a field programmable gate array (Field Programmable Gate Array, FPGA), which may include a large number of logic gates, and the connection relationship between the logic gates is configured by a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device may be realized in the form of invoking software by a processor, or in the form of hardware circuits, or in part in the form of invoking software by a processor, and in the rest in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capabilities, and in one implementation, the processor may be a circuit with instruction reading and running capabilities, such as a central processing unit (Central Processing Unit, CPU), microprocessor, graphics processor (graphics processing unit, GPU) (which may be understood as a microprocessor), or digital signal processor (digital signal processor, DSP), etc.; in another implementation, the processor may implement a function through a logical relationship of hardware circuits that are fixed or reconfigurable, e.g., a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads the configuration document, and the process of implementing the configuration of the hardware circuit may be understood as a process of loading instructions by the processor to implement the functions of some or all of the above units or modules. Furthermore, hardware circuits designed for artificial intelligence may be used, which may be understood as ASICs, such as neural network processing units (Neural Network Processing Unit, NPU), tensor processing units (Tensor Processing Unit, TPU), deep learning processing units (Deep learning Processing Unit, DPU), etc.

Fig. 4A is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in fig. 4A, the terminal 4100 may include: a processing module 4101.

In some embodiments, the processing module 4101 is configured to determine, after reselecting to a first cell, service data transmitted by a network device that first receives the first cell as new transmission data.

In some embodiments, the terminal 4100 may include a transceiver module 4102 (not shown in fig. 4A), the transceiver module 4102 configured to receive NDIs sent by network devices, receive traffic data transmitted by network devices, and the like.

Optionally, the processing module 4101 is configured to perform at least one of the other steps (e.g., step S2104, step S2105, step S2202, but not limited thereto) performed by the terminal 101 in any of the above methods, which is not described herein.

Optionally, the processing module 4102 is configured to perform at least one of the communication steps (e.g., step S2101, step S2102, step S2103, step S2201, but not limited thereto) performed by the terminal 5100 in any of the above methods, which is not described herein.

Fig. 4B is a schematic structural diagram of a network device according to an embodiment of the present disclosure. As shown in fig. 5B, the network device 4200 may include: transceiver module 4201.

In some embodiments, the transceiver module 4201 is configured to transmit traffic data to a terminal, so that after the terminal reselects to a first cell, the traffic data transmitted by a network device that first receives the first cell is determined to be new transmission data.

Optionally, the transceiver module 4201 is configured to perform at least one of the communication steps (e.g., the steps S2101, S2102, S2103, S2201, but not limited thereto) of the transmission and/or the reception executable by the network device 5200 in any of the above methods, which is not described herein.

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

In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the plurality of sub-modules perform all or part of the steps required to be performed by the processing module, respectively. Alternatively, the processing module may be interchanged with the processor.

Fig. 5A is a schematic structural diagram of a communication device 5100 according to an embodiment of the present disclosure. The communication device 5100 may be a network device (e.g., a core network device, an access network device, or the like), a terminal (e.g., a user device, or the like), a chip system, a processor, or the like that supports the core network device to implement any of the above methods, or a chip, a chip system, a processor, or the like that supports the terminal to implement any of the above methods. The communication device 5100 may be used to implement the methods described in the method embodiments described above, and reference may be made in particular to the description of the method embodiments described above.

As shown in fig. 5A, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, etc., and may be a baseband processor or a central processing unit, for example. The baseband processor may be used to process communication protocols and communication data, and the central processor 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 data for the programs. The communication device 5100 is for performing any of the above methods.

In some embodiments, the communication device 5100 further includes one or more memories 5102 for storing instructions. Alternatively, all or part of the memory 5102 may be external to the communication device 5100.

In some embodiments, the communication device 5100 further includes one or more transceivers 5103. When the communication device 5100 includes one or more transceivers 5103, the transceivers 5103 perform at least one of communication steps (e.g., but not limited to, step S2101, step S2102, step S2103, step S2201) such as transmission and/or reception in the above-described method, and the processor 5101 performs at least one of other steps (e.g., but not limited to, step S2104, step S2105, step S2202).

In some embodiments, the transceiver may include a receiver and/or a transmitter, which may be separate or integrated. Alternatively, terms such as transceiver, transceiver unit, transceiver circuit, etc. may be replaced with each other, terms such as transmitter, transmitter circuit, etc. may be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 5100 may include one or more interface circuits 5104. Optionally, an interface circuit 5104 is coupled to the memory 5102, the interface circuit 5104 being operable to receive signals from the memory 5102 or other device and to transmit signals to the memory 5102 or other device. For example, the interface circuit 5104 may read an instruction stored in the memory 5102 and send the instruction to the processor 5101.

The communication device 5100 in the above embodiment description may be a network device or a terminal, but the scope of the communication device 5100 described in the present disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by fig. 5A. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (6) others, and so on.

Fig. 5B is a schematic structural diagram of a chip 5200 according to an embodiment of the disclosure. For the case where the communication device 5200 may be a chip or a chip system, reference may be made to a schematic structural diagram of the chip 5200 shown in fig. 5B, but is not limited thereto.

The chip 5200 includes one or more processors 5201, the chip 5200 being configured to perform any of the above methods.

In some embodiments, the chip 5200 also includes one or more interface circuits 5202. Optionally, an interface circuit 5202 is connected to the memory 5203, the interface circuit 5202 may be configured to receive signals from the memory 5203 or other device, and the interface circuit 5202 may be configured to transmit signals to the memory 5203 or other device. For example, the interface circuit 5202 may read an instruction stored in the memory 5203 and send the instruction to the processor 5201.

In some embodiments, the interface circuit 5202 performs at least one of the communication steps (e.g., but not limited to step S2101, step S2102, step S2103, step S2201) of the above method, and the processor 5202 performs at least one of the other steps (e.g., but not limited to step S2104, step S2105, step S2202).

In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc. may be interchanged.

In some embodiments, the chip 5200 also includes one or more memories 5203 for storing instructions. Alternatively, all or part of the memory 5203 may be external to the chip 5200.

The present disclosure also proposes a storage medium having stored thereon instructions that, when executed on the communication device 5100, cause the communication device 5100 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

The present disclosure also proposes a program product that, when executed by the communication device 5100, causes the communication device 5100 to perform any of the above methods. Optionally, the above-described program product is a computer program product.

The present disclosure also proposes a computer program which, when run on a computer, causes the computer to perform any of the above methods. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein.

This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An information transmission method, comprising:

2. The method according to claim 1, wherein the method further comprises:

receiving a first new data indicator NDI sent by the network equipment of the first cell, wherein the first NDI is associated with the service data transmitted by the network equipment of the first cell;

And storing the first NDI.

3. The method according to claim 2, wherein the method further comprises:

and determining the new service data transmitted by the network equipment of the first cell as new transmission data or retransmission data based on the first NDI and the second NDI.

4. A method according to any one of claims 1-3, wherein the method further comprises:

5. The method according to any of claims 2-4, wherein the determining the traffic data transmitted by the network device that first received the first cell as new transmission data comprises any of:

and emptying the HARQ buffer associated with the service.

6. The method of claim 5, wherein initializing the first NDI comprises at least one of:

determining the first NDI flip;

7. The method according to any of claims 1-6, wherein the terminal is at least one of:

a terminal that has joined a service session;

8. The method according to any of claims 1-7, wherein the first cell is a cell supporting the terminal to receive the traffic data in RRC non-connected state.

9. The method according to any of claims 1-8, wherein the traffic comprises multicast traffic.

10. An information transmission method, comprising:

11. The method according to claim 10, wherein the method further comprises:

And sending a first new data indicator NDI to the terminal so that the terminal stores the first NDI, wherein the first NDI is associated with the service data transmitted by the network equipment of the first cell.

12. The method according to claim 10, wherein the method further comprises:

13. The method according to any one of claims 10-12, further comprising:

14. The method according to any of claims 10-13, wherein the terminal is at least one of:

a terminal that has joined a service session;

15. The method according to any of claims 10-14, wherein the first cell is a cell supporting the terminal to receive traffic data in RRC non-connected state.

16. The method according to any of claims 10-15, wherein the traffic comprises multicast traffic.

17. A terminal, comprising:

and the processing module is configured to determine the service data transmitted by the network equipment which receives the first cell as new transmission data by the terminal after reselecting to the first cell.

18. A network device, comprising:

19. A terminal, comprising:

one or more processors;

wherein the terminal is configured to perform the information transmission method of any one of claims 1 to 9.

20. A network device, comprising:

one or more processors;

wherein the network device is configured to perform the method of information transfer behavior of any of claims 10-16.

21. A communication system comprising a terminal configured to implement the information transmission method of any one of claims 1-9, a network device configured to implement the information transmission method of any one of claims 10-16.

22. A storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the information transmission method of any one of claims 1-9 or 10-16.