CN110351036B

CN110351036B - Information transmission method, network equipment and terminal

Info

Publication number: CN110351036B
Application number: CN201810289546.1A
Authority: CN
Inventors: 鲁智; 孙鹏; 潘学明; 陈晓航
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2021-08-17
Anticipated expiration: 2038-04-03
Also published as: CN110351036A

Abstract

The invention discloses an information transmission method, network equipment and a terminal, wherein the method comprises the following steps: receiving first information carrying a preamble from at least one terminal side, wherein the preamble is one of a preamble set configured for a terminal supporting non-orthogonal multiple access (NOMA); and sending group scheduling information corresponding to the first information of the preset number of terminals, wherein the preset number is less than or equal to the total number of the preambles in the preamble set. The network equipment screens out a preset number of the terminals for group scheduling under the scene that the number of the NOMA terminals requesting uplink transmission exceeds the total number of the preambles in the preamble set, so that the problem of transmission resource conflict among the terminals under the NOMA transmission scene can be solved, and the terminals for limiting scheduling can reduce the interference among different terminals in the multiplexing resource capacity.

Description

Information transmission method, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, a network device, and a terminal.

Background

Compared with the conventional mobile communication system, the fifth Generation (5Generation, 5G) mobile communication system, or referred to as New Radio (NR) system, needs to adapt to more diversified scenarios and service requirements. The main scenes of NR include enhanced Mobile Broadband (eMBB) communication, massive Machine Type Communications (mtc), Ultra-Reliable and Low Latency Communications (URLLC), which provide requirements for the system such as high reliability, Low Latency, large bandwidth, and wide coverage.

Uplink (UL) link Non-Orthogonal multiple Access (NOMA) technology may provide greater throughput and overload capacity for mtc scenarios and improve system capacity. Generally, non-orthogonal transmissions may be applied to grant-based and unlicensed transmissions, and thus the NOMA techniques may also be applied to various usage scenarios and deployment scenarios, such as eMBB, URLLC, mtc, and the like, particularly for unlicensed transmission scenarios. In a Radio Resource Control (RRC _ CONNECTED) state, signaling interaction in a scheduling request process (assuming that the terminal is already uplink synchronized) can be saved. In the RRC INACTIVE (RRC _ INACTIVE) state, no random access procedure may be used to transmit data or a two-step (2-step) random access procedure may be used to achieve the effects of saving signaling and terminal power consumption, reducing latency, and increasing system capacity. However, due to the non-orthogonal nature of NOMA techniques, the problem of resource collision may arise when different terminals transmit using overlapping resources.

Disclosure of Invention

The embodiment of the invention provides an information transmission method, network equipment and a terminal, which aim to solve the problem of transmission resource conflict among different terminals in a NOMA transmission supporting scene.

In a first aspect, an embodiment of the present invention provides an information transmission method, applied to a network device side, including:

receiving first information carrying a preamble from at least one terminal side, wherein the preamble is one of a preamble set configured for a terminal supporting non-orthogonal multiple access (NOMA);

and sending group scheduling information corresponding to the first information of the preset number of terminals, wherein the preset number is less than or equal to the total number of the preambles in the preamble set.

In a second aspect, an embodiment of the present invention further provides a network device, including:

a first receiving module, configured to receive first information carrying a preamble from at least one terminal, where the preamble is one of a preamble set configured for a terminal supporting non-orthogonal multiple access (NOMA);

and the first sending module is used for sending group scheduling information corresponding to the first information of the terminals with the preset number, wherein the preset number is less than or equal to the total number of the preambles in the preamble set.

In a third aspect, an embodiment of the present invention provides a network device, where the network device includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and the processor implements the steps of the information transmission method when executing the computer program.

In a fourth aspect, an embodiment of the present invention provides an information transmission method, applied to a terminal side, including:

sending first information carrying a preamble to network equipment; wherein the preamble is one of preamble sets configured for the terminal;

detecting group scheduling information sent by network equipment according to first information of a preset number of terminals, wherein the preset number is less than or equal to the total number of preambles in a preamble set;

and determining whether to transmit uplink information according to the group scheduling information.

In a fifth aspect, an embodiment of the present invention provides a terminal, including:

a third sending module, configured to send the first information carrying the preamble to the network device; wherein the preamble is one of preamble sets configured for the terminal;

the system comprises a detection module, a group scheduling module and a control module, wherein the detection module is used for detecting group scheduling information sent by network equipment according to first information of a preset number of terminals, and the preset number is less than or equal to the total number of preambles in a preamble set;

and the determining module is used for determining whether to send the uplink information according to the group scheduling information.

In a sixth aspect, an embodiment of the present invention further provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of the information transmission method are implemented.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the information transmission method are implemented.

Therefore, in the scenario that the number of NOMA terminals requesting uplink transmission exceeds the total number of preambles in the preamble set, the network device of the embodiment of the present invention screens out a preset number of the terminals for group scheduling, which can solve the problem of transmission resource conflict between terminals in the NOMA transmission scenario, and in addition, limit the scheduled terminals to reduce interference between different terminals in the multiplexing resource capacity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic flow chart illustrating an information transmission method on a network device side according to an embodiment of the present invention;

FIG. 2a is a schematic diagram of a preamble structure according to an embodiment of the present invention;

FIG. 2b is a second schematic diagram of a preamble according to an embodiment of the present invention;

FIG. 2c is a third schematic diagram of a preamble according to an embodiment of the present invention;

FIG. 2d is a diagram illustrating a fourth exemplary embodiment of a preamble;

FIG. 2e shows a fifth exemplary structure of the preamble according to the embodiment of the present invention;

FIG. 3 is a schematic resource mapping diagram of an information transmission method according to an embodiment of the present invention;

FIG. 4 is a second schematic resource mapping diagram of an information transmission method according to an embodiment of the present invention;

FIG. 5 is a block diagram of a network device according to an embodiment of the present invention;

FIG. 6 shows a block diagram of a network device of an embodiment of the invention;

fig. 7 is a flowchart illustrating an information transmission method at a terminal side according to an embodiment of the present invention;

fig. 8 is a schematic block diagram of a terminal according to an embodiment of the present invention;

fig. 9 shows a block diagram of a terminal according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

An embodiment of the present invention provides an information transmission method, which is applied to a network device side, and as shown in fig. 1, the method includes the following steps:

step 11: first information carrying a preamble is received from at least one terminal side.

Wherein the preamble is one of a set of preambles configured for terminals supporting non-orthogonal multiple access NOMA. The network device can pre-configure whether the terminal performs NOMA transmission through a terminal-specific signaling. When the terminal is in an idle state, when traffic arrives, NOMA transmission can be initiated according to the preset configuration, wherein the NOMA transmission comprises whether asynchronous (asynchronous) transmission is carried out or not. Preferably, the terminal in idle (idle) state may obtain additional information for NOMA transmission by broadcasting, such as a resource pool used by NOMA transmission, and the like, where the resource pool includes: the time frequency resource of the first information, the time frequency resource of the subsequent uplink information transmission and the like, and the terminal can initiate non-orthogonal uplink transmission on the resources of the resource pool. For a Connected (Connected) terminal, the network device may configure its dedicated resources for NOMA uplink transmission, and this time, the indication does not need to use broadcast resources.

Preferably, the network device may configure a time-frequency transmission resource and a preamble set for the terminal supporting NOMA. When the terminal service arrives, the terminal randomly selects the preamble from the preamble set and transmits the preamble by using the configured time-frequency transmission resource. The number of preambles in a preamble set configured by the network device for the terminal supporting the NOMA indicates the maximum number of terminals supported by the resources used by the terminal for non-orthogonal transmission in the NOMA transmission scenario to a certain extent.

Wherein the preamble includes: a Cyclic Prefix (CP), a preamble sequence, and a guard interval. Alternatively, the preamble includes: cyclic prefix, preamble sequence, guard interval and demodulation reference signal DMRS. Alternatively, the preamble includes a demodulation reference signal, DMRS. Alternatively, the preamble includes a demodulation reference signal DMRS and a data part (Signature) transmitted based on a terminal identity. Alternatively, the preamble includes: the base station comprises a cyclic prefix, a preamble sequence, a guard interval, a demodulation reference signal (DMRS) and a data part transmitted based on a terminal identification.

Specifically, when the network device configures the terminal for non-synchronous transmission, the structure of the preamble selected by the terminal for NOMA transmission may be the same as the preamble structure for random access, as shown in fig. 2a, and this type of preamble includes: a cyclic prefix, a preamble sequence following the cyclic prefix, and a guard interval following the preamble sequence. Preferably, the preamble sequence may correspond to a terminal identifier one to one, and is preconfigured by the network. For example, the preamble sequence may be one-to-one corresponding to the terminal ID, and pre-configured by the network. Alternatively, the structure of the preamble selected by the terminal for NOMA transmission may be different from the preamble structure of random access in non-synchronized transmission, as shown in fig. 2b, and this type of preamble includes: a cyclic prefix, a preamble sequence located after the cyclic prefix, a guard interval located after the preamble sequence, and a demodulation Reference Signal (De-Modulation Reference Signal, DMRS) located after the guard interval. Wherein, the mapping relation between the preamble sequence and the DMRS is limited in a set, and the set is configured in advance by the network. Preferably, the DMRS may carry information such as a terminal ID, a terminal identification, that is, the DMRS may be a reference signal sequence generated by the terminal ID. Thus, the network device can obtain the terminal ID when receiving the first information of the terminal.

On the other hand, when the network device configures terminal synchronous transmission, the structure of the preamble selected by the terminal for NOMA transmission is formed by DMRS, and as shown in fig. 2c, the preamble includes only DMRS sequences. The DMRS may carry information such as a terminal ID, that is, the DMRS may be a reference signal sequence generated by the terminal ID, and the DMRS and the terminal ID (e.g., the terminal ID) are configured in advance by a network. Alternatively, in synchronous transmission, the structure of the preamble selected by the terminal for NOMA transmission may be composed of a DMRS and a data portion transmitted based on the terminal identifier, and as shown in fig. 2d, the preamble includes a DMRS sequence and a data portion transmitted based on the terminal identifier (Signature). The terminal identifier may include a terminal ID, and the terminal identifier is preconfigured by the network device. Therefore, when the network equipment receives the first information of the terminal, the network equipment can obtain the terminal identification information at the same time.

Wherein the cyclic prefix and the guard interval are pre-configured by the network device. The cyclic prefix and the preamble sequence are used for identifying the NOMA terminal by the network equipment, so that the interference of a user in the NOMA transmission scene is reduced, and the complexity of the configuration of the network equipment and the complexity of the implementation of the terminal are reduced. The guard interval is beneficial for distinguishing the uplink information of different NOMA terminals so as to avoid the interference between the uplink information of different terminals. It is worth pointing out that, when the preamble includes DMRS and terminal identification information, information of the DMRS (e.g., DMRS port) may be dynamically configured by the network device, and the terminal identification information may be randomly selected from a resource pool preconfigured by the network device. Or, the DMRS and the terminal identifier information are randomly selected from a resource pool pre-configured by the network device, and the DMRS and the terminal identifier information are in one-to-one correspondence and are pre-configured by the network device.

Further, when the network device configures terminal synchronous transmission, the terminal may also directly transmit a preamble and user data, for example, as shown in fig. 2e, the terminal transmits a cyclic prefix, a preamble sequence, a guard interval, a demodulation reference signal DMRS, and a data portion transmitted based on a terminal identifier, where the data portion may be transmitted based on the terminal identifier. Step 12: and sending group scheduling information corresponding to the first information of the preset number of terminals.

Wherein the preset number is less than or equal to the total number of preambles in the preamble set. The group scheduling information is used to indicate whether a preset number of terminals can transmit uplink information using resources configured by the system, that is, indicate whether the NOMA terminal continues transmission of subsequent uplink information. After the network device receives the first information of at least one terminal, if the number of at least one terminal exceeds the total number of preambles in the preamble set, this indicates that the resources configured by the terminal that requires for NOMA transmission exceed the maximum load borne by the resources, and in order to ensure that the services of the terminal are not affected to the maximum extent, the network device screens out a preset number of terminals from the at least one terminal for resource scheduling, and generates group scheduling information. The Group scheduling Information may be carried in Group-common Downlink Control Information (Group-common DCI).

Preferably, step 12 comprises: and sending group scheduling information corresponding to the first information of the preset number of terminals in a preset transmission time window. The preset transmission time window and the time when the first information is received are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer. As shown in fig. 3, when the network device receives the first information sent by a certain NOMA terminal at time n, the network device sends the group scheduling information within a preset transmission time window spaced from time n by k 1. The duration of the preset transmission time window is N time domain transmission units, and N is a positive integer. The time domain transmission unit includes: a subframe, a slot, or a time domain transmission symbol (or referred to as an OFDM symbol). As shown in fig. 3, the duration of the predetermined tti is from time n + k1 to time n + k 2. That is, after receiving the first information of at least one terminal, the network device transmits Group-common DCI in the time period from n + k1 to n + k2, and accordingly, the terminal detects the Group-common DCI in this time period. The duration of the first preset interval and the duration of the preset transmission time window can be configured by the network device.

In a preferred embodiment, step 12 is followed by: and receiving uplink information from a preset number of terminal sides on the first target transmission resource according to the group scheduling information. Wherein, the uplink information includes: at least one of uplink control information and uplink data information. As shown in fig. 3, the network device transmits the group common DCI in the time period from n + k1 to n + k2, the terminal is indicated in the group common DCI to transmit the uplink information at the time n + k3 (the first target transmission resource), and then the network device receives the uplink information transmitted by the terminal at the time n + k 3. The network device indicates, through the group scheduling information, that a preset number of terminals can continue subsequent uplink transmission, and at this time, the terminals send uplink information to the network device, where the uplink information may include uplink control information, uplink data information, or both uplink control information and uplink data information. Correspondingly, after detecting the group scheduling information, the terminal determines whether to allow subsequent uplink transmission according to the indication of the scheduling information. Preferably, the group scheduling information includes acknowledgement information for the preamble, and the terminal detects whether there is acknowledgement information for the preamble selected by the terminal after receiving the group scheduling information, and if so, determines that the subsequent uplink transmission can be continued, and if not, determines that the subsequent uplink transmission cannot be continued. The first target transmission resource is configured in advance by the network equipment.

Preferably, when the uplink information includes uplink control information, the step of receiving the uplink information from the preset number of terminal sides further includes, after the step of receiving the uplink information: and receiving uplink data information from a preset number of terminal sides on a second target transmission resource according to the uplink control information. As shown in fig. 3, the network device receives the uplink control information transmitted by the terminal at time n + k3, and receives the uplink data information transmitted by the terminal at time n + k4 (second target transmission resource). Wherein the second target transmission resource is pre-configured for the network device.

In order to ensure that the NOMA terminals with service requests can all perform service transmission normally, step 12 further includes: dedicated scheduling information is transmitted. The dedicated scheduling information corresponds to other terminals, and the other terminals are terminals except for the preset number of terminals in the at least one terminal. As shown in fig. 4, the network device receives first information sent by a certain NOMA terminal at time n, and if it is detected that the number of at least one terminal exceeds the total number of preambles in the preamble set, this indicates that the terminal with a service requirement exceeds the maximum load that can be carried by the configured resource, and in order to ensure that the service of the terminal is not affected to the maximum extent, the network device sends group scheduling information within a preset transmission time window (time n + k1 to time n + k2) spaced from time n by k1, where the group scheduling information is used to indicate that uplink transmission of a preset number of terminals is allowed to continue, and the preset number is less than or equal to the total number of terminals requested by the service. At this time, in order to ensure that the service of the other terminal is normally performed, the network device sends the dedicated scheduling information of the other terminal at time n + k5, so that the terminal that does not detect permission of subsequent uplink transmission in the group scheduling information can perform subsequent uplink transmission by using the dedicated scheduling information.

Or, the dedicated scheduling information corresponds to a terminal that has not received the acknowledgement information that the first information was correctly transmitted, so that when the network device does not acknowledge the first information of a certain terminal in the group scheduling information, the network device can send the dedicated scheduling information for the network device alone to ensure the subsequent uplink transmission of the terminal.

Further, the step of transmitting the dedicated scheduling information corresponding to the other terminal further includes, after the step of transmitting the dedicated scheduling information corresponding to the other terminal: and receiving uplink information from other terminal sides through the third target transmission resource scheduled by the special scheduling information. As shown in fig. 4, the network device transmits dedicated scheduling information at n + k5, the dedicated scheduling information schedules other terminals to transmit uplink information at time n + k6, and then the network device receives the uplink information transmitted by other terminals at time n + k6 (third target transmission resource).

It is worth pointing out that when the terminal directly transmits the preamble and the user data in step 11, the dedicated scheduling information uses the same Hybrid Automatic Repeat reQuest (HARQ) process as the terminal initial transmission.

The above briefly introduces the role of the group scheduling information, and the following embodiment further describes the role of the group scheduling information with reference to the information carried in the group scheduling information.

The group scheduling information includes: at least one of Radio Network Temporary Identity (RNTI), indication information for indicating preambles of the preset number of terminals, and scheduling information of the preset number of terminals. It is worth pointing out that the indication information indicating the preamble mentioned herein is the above-mentioned confirmation information for the preamble. It is assumed that the network device configures an RNTI, i.e., a NOMA-group-RNTI, for detecting a group of common DCI for the terminal, and a bit (bit) position of indication information corresponding to a preamble in the group of common DCI. For example, the network device selects 20 terminals to form a group, the group of terminals uses 20 preambles (Preamble 1-Preamble 20), and the 20 terminals use the same NOMA-group-RNTI. The group of common DCI comprises 20 bits, and each bit corresponds to the indication information of 1 preamble respectively. I.e., Preamble 1-Preamble 20 occupy 1bit each using a bitmap (bitmap) format. For example, when the value of a bit is "1", it indicates that the terminal that is allowed to use the preamble corresponding to the bit can continue the subsequent uplink transmission, and when the value of a bit is "0", it indicates that the terminal that is not allowed to use the preamble corresponding to the bit can continue the subsequent uplink transmission. Correspondingly, when the terminal receives the indication information corresponding to the preamble selected by the terminal, the terminal is determined to permit the subsequent uplink transmission of the terminal by the network equipment. In particular, when multiple terminals select the same preamble, the network device may detect multiple preamble signals or fail to detect due to interference, and if it is detected that the number of terminals initiating NOMA transmission does not exceed the capacity of the resource configuring NOMA transmission, the network device may send acknowledgement information to all terminals. Otherwise, the network device may send acknowledgement information for some terminals and non-acknowledgement information for other terminals. The terminal detects the non-acknowledgement information aiming at the preamble in the group common DCI, which indicates that the preamble selected by the terminal conflicts with other users, and the terminal can reselect the preamble at the next moment.

In addition, the scheduling information includes: at least one of Modulation and Coding Scheme (MCS) information, Timing Advance (TA) information, and Transmit Power Control (TPC) information. That is, the group scheduling information may further include related control information (scheduling information) of the preset number of terminals for subsequently transmitting data, for example, the control information indication for preamble 1 includes m bits, and is composed of the following information: acknowledgement information (the above-mentioned 1-bit indication information), MCS information, TA information, and TPC command. The indication for preamble 2 includes m bits, which is composed of acknowledgement information, MCS information, TA information, and TPC command. The indication for preamble n comprises m bits and is composed of acknowledgement information, MCS information, TA information and TPC command. Wherein, the group scheduling information is formed by cascading n pieces of the control information corresponding to the preamble. The network device may configure the location of each preamble in the group common information. Optionally, the group common DCI may also include timing information corresponding to the terminal transmitting the subsequent information of the preamble.

It is worth pointing out that, during data transmission, the terminal may carry terminal ID information, where the terminal ID information may scramble the DMRS, that is, be carried by the DMRS sequence, and may also be carried by preconfigured NOMA identification information, such as a spreading code, where the preconfigured NOMA identification may be preconfigured by the network device.

In the information transmission method of the embodiment of the invention, the network equipment screens out a preset number of NOMA terminals from the terminals for group scheduling under the scene that the number of the NOMA terminals requesting uplink transmission exceeds the total number of the preambles in the preamble set, so that the problem of transmission resource conflict among the terminals under the NOMA transmission scene can be solved, and the terminals for limiting scheduling can reduce the interference among different terminals in the multiplexing resource capacity.

The above embodiments respectively describe in detail the information transmission methods in different scenarios, and the following embodiments further describe the corresponding network devices with reference to the accompanying drawings.

As shown in fig. 5, a network device 500 according to an embodiment of the present invention can receive first information carrying a preamble from at least one terminal side in the foregoing embodiment; details of a method for sending group scheduling information corresponding to first information of a preset number of terminals, and achieving the same effect, where a preamble is one of preamble sets configured for terminals supporting non-orthogonal multiple access NOMA, and the preset number is less than or equal to the total number of preambles in the preamble set, the network device 500 specifically includes the following functional modules:

a first receiving module 510, configured to receive, from at least one terminal, first information carrying a preamble, where the preamble is one of a preamble set configured for a terminal supporting non-orthogonal multiple access NOMA;

a first sending module 520, configured to send group scheduling information corresponding to first information of a preset number of terminals, where the preset number is less than or equal to the total number of preambles in the preamble set.

Wherein, the first sending module 520 includes:

the first sending submodule is used for sending group scheduling information corresponding to the first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time when the first information is received are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer.

Wherein, the network device 500 further includes:

a second receiving module, configured to receive, on the first target transmission resource, uplink information from a preset number of terminal sides according to the group scheduling information; wherein, the uplink information includes: at least one of uplink control information and uplink data information.

Wherein, the network device 500 further includes:

and a third receiving module, configured to receive, when the uplink information includes uplink control information, uplink data information from a preset number of terminal sides on a second target transmission resource according to the uplink control information.

Wherein the group scheduling information includes: at least one of Radio Network Temporary Identifiers (RNTIs) of the preset number of terminals, indication information for indicating preambles of the preset number of terminals, and scheduling information of the preset number of terminals.

Wherein the scheduling information includes: at least one of modulation and coding strategy, MCS, timing advance, TA, and transmit power control, TPC, information.

Wherein, the network device 500 further includes:

the second sending module is used for sending the special scheduling information, wherein the special scheduling information corresponds to other terminals, and the other terminals are terminals except for the preset number of terminals in at least one terminal; alternatively, the dedicated scheduling information corresponds to a terminal that has not received the acknowledgement that the first information was transmitted correctly.

Wherein, the network device 500 further includes:

and the fourth receiving module is used for receiving the uplink information through the third target transmission resource scheduled by the special scheduling information.

Wherein the preamble includes: a cyclic prefix, a preamble sequence and a guard interval;

alternatively, the preamble includes: cyclic prefix, preamble sequence, guard interval and demodulation reference signal DMRS;

alternatively, the preamble includes: demodulating a reference signal (DMRS);

alternatively, the preamble includes: demodulating a reference signal DMRS and a data part transmitted based on a terminal identification;

alternatively, the preamble includes: the base station comprises a cyclic prefix, a preamble sequence, a guard interval, a demodulation reference signal (DMRS) and a data part transmitted based on a terminal identification.

It is worth pointing out that, in a scenario where the number of NOMA terminals requesting uplink transmission exceeds the total number of preambles in the preamble set, the network device of the embodiment of the present invention screens out a preset number of such terminals for group scheduling, which can solve the problem of transmission resource conflict between terminals in a NOMA transmission scenario, and in addition, restricts scheduled terminals to reduce interference between different terminals in the multiplexing resource capacity.

In order to better achieve the above object, an embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the information transmission method described above are implemented. Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the information transmission method as described above.

Specifically, the embodiment of the invention also provides a network device. As shown in fig. 6, the network device 600 includes: antenna 61, radio frequency device 62, baseband device 63. The antenna 61 is connected to a radio frequency device 62. In the uplink direction, the rf device 62 receives information via the antenna 61 and sends the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes information to be transmitted and transmits the information to the radio frequency device 62, and the radio frequency device 62 processes the received information and transmits the processed information through the antenna 61.

The above-mentioned band processing means may be located in the baseband means 63, and the method performed by the network device in the above embodiment may be implemented in the baseband means 63, where the baseband means 63 includes a processor 64 and a memory 65.

The baseband device 63 may include at least one baseband board, for example, and a plurality of chips are disposed on the baseband board, as shown in fig. 6, wherein one chip, for example, the processor 64, is connected to the memory 65 to call up the program in the memory 65 to perform the network device operation shown in the above method embodiment.

The baseband device 63 may further include a network interface 66 for exchanging information with the radio frequency device 62, such as a Common Public Radio Interface (CPRI).

The processor may be a single processor or a combination of multiple processing elements, for example, the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement the methods performed by the network devices, for example: one or more microprocessors DSP, or one or more field programmable gate arrays FPGA, or the like. The storage element may be a memory or a combination of a plurality of storage elements.

The memory 65 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synchlronous DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 65 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Specifically, the network device of the embodiment of the present invention further includes: a computer program stored in the memory 65 and executable on the processor 64, the processor 64 calling the computer program in the memory 65 to execute the method performed by each module shown in fig. 5.

In particular, the computer program when invoked by the processor 64 is operable to perform: receiving first information carrying a preamble from at least one terminal side, wherein the preamble is one of a preamble set configured for a terminal supporting non-orthogonal multiple access (NOMA);

In particular, the computer program when invoked by the processor 64 is operable to perform: sending group scheduling information corresponding to first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time when the first information is received are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer.

In particular, the computer program when invoked by the processor 64 is operable to perform: receiving uplink information from a preset number of terminal sides on a first target transmission resource according to the group scheduling information; wherein, the uplink information includes: at least one of uplink control information and uplink data information.

In particular, the computer program when invoked by the processor 64 is operable to perform: and when the uplink information comprises the uplink control information, receiving the uplink data information from the preset number of terminal sides on the second target transmission resource according to the uplink control information.

In particular, the computer program when invoked by the processor 64 is operable to perform: transmitting special scheduling information, wherein the special scheduling information corresponds to other terminals, and the other terminals are terminals except for a preset number of terminals in at least one terminal; alternatively, the dedicated scheduling information corresponds to a terminal having a transmission error in the first information.

In particular, the computer program when invoked by the processor 64 is operable to perform: and receiving the uplink information through the third target transmission resource scheduled by the special scheduling information.

alternatively, the preamble includes: demodulating a reference signal (DMRS);

alternatively, the preamble comprises: demodulating a reference signal DMRS and a data part transmitted based on a terminal identification;

The network device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, or the like, which is not limited herein.

In the network device in the embodiment of the invention, under the scene that the number of the NOMA terminals requesting uplink transmission exceeds the total number of the preambles in the preamble set, a preset number of the NOMA terminals are screened out for group scheduling, so that the problem of transmission resource conflict among the terminals under the NOMA transmission scene can be solved, and the terminals for limiting scheduling can reduce the interference among different terminals in the multiplexing resource capacity.

The above embodiment describes the information transmission method of the present invention from the network device side, and the following embodiment further describes the information transmission method at the terminal side with reference to the drawings.

As shown in fig. 7, the information transmission method according to the embodiment of the present invention, applied to a terminal side, includes the following steps:

step 71: and sending first information carrying the preamble to the network equipment.

Wherein the preamble is one of a preamble set configured for the terminal, and the preamble set can be configured by the network device. When the terminal service arrives, the terminal randomly selects the preamble from the preamble set and transmits the preamble by using the configured time-frequency transmission resource.

Wherein the preamble includes: a Cyclic Prefix (CP), a leader sequence and a guard interval; the preamble sequence may be one-to-one corresponding to a terminal identification (e.g., a terminal ID), and is preconfigured by the network. Alternatively, the preamble includes: cyclic prefix, preamble sequence, guard interval and demodulation reference signal DMRS. The mapping relationship between the preamble sequence and the DMRS is defined in a set, and the set is preconfigured by the network device. Alternatively, the structure of the preamble for NOMA transmission is formed by DMRS, which may carry a terminal identity, that is, the DMRS may be a reference signal sequence generated by a terminal ID, and the DMRS and the terminal identity are configured in advance by a network device. Thus, the network device can obtain the terminal ID when receiving the first information of the terminal. Alternatively, the structure of the preamble for NOMA transmission is composed of a DMRS and a data part transmitted based on a terminal identity. Wherein the cyclic prefix and the guard interval are pre-configured by the network device. The cyclic prefix and the preamble sequence are used for identifying the NOMA terminal by the network equipment, so that the interference of a user in the NOMA transmission scene is reduced, and the complexity of the configuration of the network equipment and the complexity of the implementation of the terminal are reduced. The guard interval is beneficial for distinguishing the uplink information of different NOMA terminals so as to avoid the interference between the uplink information of different terminals.

When the terminal is in the asynchronous condition, the preamble usable by the terminal includes: a Cyclic Prefix (CP), a preamble sequence, and a guard interval; the preamble sequences may correspond one-to-one to the terminal identities, and are preconfigured by the network device. Alternatively, the preamble includes: cyclic prefix, preamble sequence, guard interval and demodulation reference signal DMRS. The DMRS may correspond to the terminal identifier one to one, and may be preconfigured by the network device.

When the terminal is in a synchronous condition, the preamble which can be used by the terminal comprises a demodulation reference signal (DMRS). Alternatively, the preamble includes a demodulation reference signal DMRS and a data part (Signature) transmitted based on a terminal identity.

When the preamble used by the terminal includes a demodulation reference signal (DMRS), information of the DMRS (e.g., used DMRS port) may be configured in advance by the network equipment. The information of the DMRS may correspond to the terminal identifier one to one, and may be preconfigured by the network device.

When a preamble used by a terminal includes a demodulation reference signal (DMRS) and a data part (Signature) transmitted based on a terminal identity, DMRS information (e.g., a used DMRS port) may be configured by a network device; the terminal identity may be randomly selected from a pool of configured resources. Or, DMRS information and terminal identifiers may be selected from a configured resource pool, and in this case, the DMRS information terminal identifiers are mapped one to one and configured in advance by the network device.

Further, when the network device configures terminal synchronous transmission, the terminal may also directly transmit the preamble and the user data, for example, the terminal transmits a cyclic prefix, a preamble sequence, a guard interval, and a demodulation reference signal DMRS, and a data portion transmitted based on the terminal identity, where the data portion may be transmitted based on the terminal identity.

Step 72: and detecting group scheduling information sent by the network equipment according to the first information of the preset number of terminals.

Wherein the preset number is less than or equal to the total number of preambles in the preamble set. The group scheduling information is used to indicate whether a preset number of terminals can utilize the system resource capacity to transmit uplink information, i.e., indicate whether the NOMA terminal continues transmission of subsequent uplink information. Wherein the group scheduling information may be carried in a group common DCI.

Step 73: and determining whether to transmit uplink information according to the group scheduling information.

The terminal detects whether the group scheduling information is the acknowledgement information of the preamble selected by the terminal after receiving the group scheduling information, if so, the terminal determines that the subsequent uplink transmission can be continued, and if not, the terminal determines that the subsequent uplink transmission cannot be continued.

Wherein step 72 comprises: detecting group scheduling information sent by network equipment according to first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time interval for sending the first information are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer. As shown in fig. 3, the terminal transmits the first information at time n, the network device transmits group scheduling information within a preset transmission time window (time n + k1 to time n + k2) spaced from time n by k1, and the terminal detects group-common DCI during this time period. The duration of the first preset interval and the duration of the preset transmission time window can be configured by the network device.

Preferably, step 73 comprises: when the group scheduling information indicates that the terminal allows to send the uplink information, the uplink information is sent to the network equipment according to the group scheduling information in the first target transmission resource; wherein, the uplink information includes: at least one of uplink control information and uplink data information. The first target transmission resource is configured by the network. The scheduling information includes: at least one of RNTIs of the preset number of terminals, indication information for indicating preambles of the preset number of terminals, and scheduling information of the preset number of terminals. It is worth pointing out that the indication information indicating the preamble mentioned herein is the above-mentioned confirmation information for the preamble. It is assumed that the network device configures an RNTI, i.e., a NOMA-group-RNTI, for detecting a group of common DCI for the terminal, and a bit (bit) position of indication information corresponding to a preamble in the group of common DCI. For example, the network device selects 20 terminals to form a group, the group of terminals uses 20 preambles (Preamble 1-Preamble 20), and the 20 terminals use the same NOMA-group-RNTI. The group of common DCI comprises 20 bits, and each bit corresponds to the indication information of 1 preamble respectively. I.e., Preamble 1-Preamble 20 occupy 1bit each using a bitmap (bitmap) format. For example, when the value of a bit is "1", it indicates that the terminal that allows the preamble corresponding to the bit can continue the subsequent uplink transmission, and when the terminal receives the acknowledgment information corresponding to the preamble selected by itself, it determines that the network device permits the subsequent uplink transmission of the terminal.

Preferably, step 73 further comprises: when the group scheduling information indicates that the terminal does not allow to send uplink information, receiving special scheduling information sent by the network equipment; and sending the uplink information to the network equipment through the third target transmission resource scheduled by the special scheduling information. When a bit value in the indication information of the preset number of terminals is '0', indicating that the terminal which adopts the preamble corresponding to the bit is not allowed to continue the subsequent uplink transmission, detecting the non-confirmation information aiming at the preamble in the group public DCI by the terminal, indicating that the preamble selected by the terminal conflicts with other users, and reselecting the preamble by the terminal at the next moment. In order to ensure uplink transmission of these terminals, the network device sends dedicated scheduling information for the terminals, as shown in fig. 5, the terminals detect group scheduling information within a preset transmission time window (time n + k1 to time n + k2) spaced from time n by k1, the group scheduling information indicates that the uplink transmission of the terminals is not allowed to continue, at this time, the terminals continue to detect the dedicated scheduling information at time n + k5, and if the dedicated scheduling information is detected, subsequent uplink transmission is performed through a third target transmission resource indicated by the dedicated scheduling information.

Or, when the first information transmission correct confirmation information is not received, receiving the special scheduling information sent by the network equipment; and sending the uplink information to the network equipment through the third target transmission resource scheduled by the special scheduling information. Preferably, when the terminal directly transmits the preamble and the data, if the acknowledgement information of the network device is not received and the dedicated scheduling information of the network is received, the dedicated scheduling information uses the same HARQ process as the initial transmission of the terminal; the HARQ process for the terminal initial transmission may be reserved in a preconfigured manner. If the corresponding first information transmission is not explicitly indicated in the group scheduling information as being correct, further acknowledgement information that the first information transmission is correct needs to be transmitted in the dedicated scheduling information.

Wherein, when the uplink information includes uplink control information, the step of sending the uplink information to the network device further includes: and sending uplink data information to the network equipment on the second target transmission resource according to the uplink control information so as to complete the transmission of the uplink service.

In the information transmission method of the embodiment of the invention, when requesting uplink transmission, the NOMA terminal sends the first information carrying the preamble to the network equipment, and when the number of the terminals requesting the uplink transmission exceeds the total number of the preambles in the preamble set, the network equipment screens out a preset number of the terminals for group scheduling, so that the problem of transmission resource conflict among the terminals in the NOMA transmission scene can be solved, and in addition, the scheduled terminals are limited to reduce the interference among different terminals in the multiplexing resource capacity. Wherein the preset number may be less than or equal to the maximum capacity of the configured NOMA resource bearers.

The above embodiments describe information transmission methods in different scenarios, and a terminal corresponding to the method will be further described with reference to the accompanying drawings.

As shown in fig. 8, the terminal 800 according to the embodiment of the present invention can implement sending the first information carrying the preamble to the network device in the above embodiment, detecting the group scheduling information sent by the network device according to the first information of the preset number of terminals, determining whether to send details of the uplink information method according to the group scheduling information, and achieving the same effect; the preamble is one of preamble sets configured for the terminal, and the preset number is less than or equal to the total number of preambles in the preamble set, where the terminal 800 specifically includes the following functional modules:

a third sending module 810, configured to send the first information carrying the preamble to the network device; wherein the preamble is one of preamble sets configured for the terminal;

a detecting module 820, configured to detect group scheduling information sent by a network device according to first information of a preset number of terminals, where the preset number is less than or equal to a total number of preambles in a preamble set;

a determining module 830, configured to determine whether to send uplink information according to the group scheduling information.

Wherein the detection module 820 comprises:

the detection submodule is used for detecting group scheduling information sent by the network equipment according to first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time interval for sending the first information are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer.

Wherein the determining module 830 includes:

the second sending submodule is used for sending the uplink information to the network equipment on the first target transmission resource according to the group scheduling information when the group scheduling information indicates that the terminal is allowed to send the uplink information; wherein, the uplink information includes: at least one of uplink control information and uplink data information. The first target transmission resource is configured by the network.

Wherein, terminal 800 further includes:

and a fourth sending module, configured to send, when the uplink information includes the uplink control information, the uplink data information to the network device on the second target transmission resource according to the uplink control information.

Wherein, the determining module 830 further comprises:

the first receiving submodule is used for receiving the special scheduling information sent by the network equipment when the group scheduling information indicates that the terminal is not allowed to send uplink information or when the acknowledgement information that the first information is transmitted correctly is not received;

and the third sending submodule is used for sending the uplink information to the network equipment through the third target transmission resource scheduled by the special scheduling information.

alternatively, the preamble includes: demodulation reference signals (DMRS).

Alternatively, the preamble comprises: a demodulation reference signal (DMRS) and a data portion transmitted based on a terminal identity.

It is worth pointing out that, when the terminal requests uplink transmission, the terminal of the embodiment of the present invention sends the first information carrying the preamble to the network device, and when the number of terminals requesting uplink transmission exceeds the total number of preambles in the preamble set, the network device screens out a preset number of terminals from the terminals for group scheduling, which can solve the problem of transmission resource conflict between terminals in a NOMA transmission scenario, and in addition, limit the scheduled terminals to reduce interference between different terminals in the multiplexing resource capacity. Wherein the preset number may be less than or equal to the maximum capacity of the configured NOMA resource bearers.

It should be noted that the division of the modules of the network device and the terminal is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

To better achieve the above object, further, fig. 9 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present invention, where the terminal 90 includes, but is not limited to: radio frequency unit 91, network module 92, audio output unit 93, input unit 94, sensor 95, display unit 96, user input unit 97, interface unit 98, memory 99, processor 910, and power supply 911. Those skilled in the art will appreciate that the terminal configuration shown in fig. 9 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 91 is configured to send first information carrying a preamble to a network device; wherein the preamble is one of preamble sets configured for the terminal;

a processor 910, configured to detect group scheduling information sent by a network device according to first information of a preset number of terminals, where the preset number is less than or equal to a total number of preambles in a preamble set;

determining whether to transmit uplink information according to the group scheduling information;

the terminal of the embodiment of the invention sends the first information carrying the preamble to the network equipment when requesting the uplink transmission, and when the number of the terminals requesting the uplink transmission exceeds the total number of the preambles in the preamble set, the network equipment screens out a preset number of the terminals for group scheduling, so that the problem of transmission resource conflict among the terminals in the NOMA transmission scene can be solved, and the scheduled terminals are limited to reduce the interference among different terminals in the multiplexing resource capacity. Wherein the preset number may be less than or equal to the maximum capacity of the configured NOMA resource bearers.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 91 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 910; in addition, the uplink data is transmitted to the base station. Typically, the radio frequency unit 91 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 91 may also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user via the network module 92, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 93 may convert audio data received by the radio frequency unit 91 or the network module 92 or stored in the memory 99 into an audio signal and output as sound. Also, the audio output unit 93 may also provide audio output related to a specific function performed by the terminal 90 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 93 includes a speaker, a buzzer, a receiver, and the like.

The input unit 94 is for receiving an audio or video signal. The input Unit 94 may include a Graphics Processing Unit (GPU) 941 and a microphone 942, and the Graphics processor 941 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 96. The image frames processed by the graphic processor 941 may be stored in the memory 99 (or other storage medium) or transmitted via the radio frequency unit 91 or the network module 92. The microphone 942 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 91 in case of the phone call mode.

The terminal 90 also includes at least one sensor 95, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 961 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 961 and/or a backlight when the terminal 90 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 95 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described in detail herein.

The display unit 96 is used to display information input by the user or information provided to the user. The Display unit 96 may include a Display panel 961, and the Display panel 961 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 97 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 97 includes a touch panel 971 and other input devices 972. Touch panel 971, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 971 (e.g., operations by a user on or near touch panel 971 using a finger, a stylus, or any other suitable object or attachment). The touch panel 971 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, receives a command from the processor 910, and executes the command. In addition, the touch panel 971 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 971, the user input unit 97 may include other input devices 972. In particular, other input devices 972 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 971 may be overlaid on the display panel 961, and when the touch panel 971 detects a touch operation on or near the touch panel 971, the touch operation is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 provides a corresponding visual output on the display panel 961 according to the type of the touch event. Although the touch panel 971 and the display panel 961 are shown in fig. 9 as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 971 and the display panel 961 may be integrated to implement the input and output functions of the terminal, and is not limited herein.

The interface unit 98 is an interface for connecting an external device to the terminal 90. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 98 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 90 or may be used to transmit data between the terminal 90 and an external device.

The memory 99 may be used to store software programs as well as various data. The memory 99 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 99 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 910 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 99 and calling data stored in the memory 99, thereby integrally monitoring the terminal. Processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 910.

The terminal 90 may further include a power supply 911 (e.g., a battery) for supplying power to various components, and preferably, the power supply 911 may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption through the power management system.

In addition, the terminal 90 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, which includes a processor 910, a memory 99, and a computer program stored in the memory 99 and capable of running on the processor 910, where the computer program, when executed by the processor 910, implements each process of the above-mentioned information transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. A terminal may be a wireless terminal or a wired terminal, and a wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the information transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. An information transmission method is applied to a network device side, and is characterized by comprising the following steps:

sending group scheduling information corresponding to first information of a preset number of terminals, wherein the preset number is less than or equal to the total number of preambles in the preamble set;

the group scheduling information includes: at least one of radio network temporary identifiers RNTIs of the preset number of terminals, indication information used for indicating preambles of the preset number of terminals, and scheduling information of the preset number of terminals.

2. The information transmission method according to claim 1, wherein the step of transmitting the group scheduling information corresponding to the first information of a preset number of the terminals comprises:

sending group scheduling information corresponding to first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time when the first information is received are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer.

3. The information transmission method according to claim 1, wherein after the step of transmitting the group scheduling information corresponding to the first information of the preset number of terminals, the method further comprises:

receiving uplink information from a preset number of terminal sides on a first target transmission resource according to the group scheduling information; wherein the uplink information includes: at least one of uplink control information and uplink data information.

4. The information transmission method according to claim 3, wherein when the uplink information includes uplink control information, after the step of receiving uplink information from a preset number of the terminal sides, the method further includes:

and receiving uplink data information from a preset number of terminal sides on a second target transmission resource according to the uplink control information.

5. The information transmission method according to claim 1, wherein the scheduling information comprises: at least one of modulation and coding strategy, MCS, timing advance, TA, and transmit power control, TPC, information.

6. The information transmission method according to claim 1, wherein after the step of transmitting the group scheduling information corresponding to the first information of the preset number of terminals, the method further comprises:

transmitting dedicated scheduling information, wherein the dedicated scheduling information corresponds to other terminals, and the other terminals are terminals except for a preset number of terminals in the at least one terminal; or, the dedicated scheduling information corresponds to a terminal that has not received acknowledgement information that the first information transmission is correct.

7. The information transmission method according to claim 6, wherein the step of transmitting the dedicated scheduling information is followed by further comprising:

and receiving uplink information through the third target transmission resource scheduled by the special scheduling information.

8. The information transmission method according to claim 1, wherein the preamble comprises: a cyclic prefix, a preamble sequence, and a guard interval;

alternatively, the preamble comprises: cyclic prefix, preamble sequence, guard interval and demodulation reference signal DMRS;

alternatively, the preamble comprises: demodulating a reference signal (DMRS);

alternatively, the preamble comprises: the base station comprises a cyclic prefix, a preamble sequence, a guard interval, a demodulation reference signal (DMRS) and a data part transmitted based on a terminal identification.

9. A network device, comprising:

a first sending module, configured to send group scheduling information corresponding to first information of a preset number of the terminals, where the preset number is less than or equal to a total number of preambles in the preamble set;

10. A network device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the information transmission method according to any one of claims 1 to 8 when executing the computer program.

11. An information transmission method applied to a terminal side, comprising:

sending first information carrying a preamble to network equipment; wherein the preamble is one of a set of preambles configured for a terminal;

detecting group scheduling information sent by the network equipment according to first information of a preset number of terminals, wherein the preset number is less than or equal to the total number of preambles in the preamble set;

determining whether to send uplink information according to the group scheduling information;

12. The information transmission method according to claim 11, wherein the step of detecting the group scheduling information transmitted by the network device according to the first information of the preset number of terminals includes:

detecting group scheduling information sent by the network equipment according to first information of a preset number of terminals in a preset transmission time window; the preset transmission time window and the time interval for sending the first information are separated by a first preset interval, the duration of the preset transmission time window is N time domain transmission units, and N is a positive integer.

13. The information transmission method according to claim 11, wherein the step of determining whether to transmit uplink information according to the group scheduling information comprises:

when the group scheduling information indicates that the terminal is allowed to send uplink information, sending the uplink information to the network equipment on a first target transmission resource according to the group scheduling information; wherein the uplink information includes: at least one of uplink control information and uplink data information.

14. The information transmission method according to claim 13, wherein when the uplink information includes uplink control information, after the step of sending the uplink information to the network device, the method further includes:

and sending uplink data information to the network equipment on a second target transmission resource according to the uplink control information.

15. The information transmission method according to claim 11, wherein the step of determining whether to transmit uplink information according to the group scheduling information comprises:

when the group scheduling information indicates that the terminal is not allowed to send uplink information, or when the acknowledgement information that the first information transmission is correct is not received, receiving dedicated scheduling information sent by network equipment;

and sending uplink information to the network equipment through the third target transmission resource scheduled by the special scheduling information.

16. The information transmission method according to claim 11, wherein the preamble comprises: a cyclic prefix, a preamble sequence, and a guard interval;

alternatively, the preamble comprises: demodulating a reference signal (DMRS);

alternatively, the preamble comprises: demodulating reference signals DMRS and data information transmitted based on terminal identification;

alternatively, the preamble comprises: the base station comprises a cyclic prefix, a preamble sequence, a guard interval, a demodulation reference signal (DMRS) and data information transmitted based on a terminal identification.

17. A terminal, comprising:

a third sending module, configured to send the first information carrying the preamble to the network device; wherein the preamble is one of a set of preambles configured for a terminal;

a detecting module, configured to detect group scheduling information sent by the network device according to first information of a preset number of terminals, where the preset number is less than or equal to a total number of preambles in the preamble set;

a determining module, configured to determine whether to send uplink information according to the group scheduling information;

18. A terminal, characterized in that the terminal comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the information transmission method according to any one of claims 11 to 16.

19. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the information transmission method according to any one of claims 1 to 8, 11 to 16.