CN114080847A

CN114080847A - Data receiving and transmitting method and device, communication equipment and storage medium

Info

Publication number: CN114080847A
Application number: CN202080001227.1A
Authority: CN
Inventors: 付婷
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2022-02-22
Also published as: WO2021248418A1

Abstract

The embodiment of the disclosure provides a data receiving method, a data transmitting method, a data receiving device, a data transmitting device, a communication device and a storage medium. The data receiving method comprises the following steps: before a sending end sends data, idle channel detection is carried out on an unauthorized frequency spectrum; when detecting that a channel of the unlicensed spectrum is idle, sending channel occupation indication information; receiving data in consecutive M transmission resource units after the indication information is sent, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

Description

Data receiving and transmitting method and device, communication equipment and storage medium

Technical Field

The disclosed embodiments relate to the field of wireless communications, but not limited to the field of wireless communications, and in particular, to a method and an apparatus for receiving and transmitting data, a communication device, and a storage medium.

Background

In the New Radio-Unlicensed (NR-U) spectrum of 5G communication protocol version 16(R16), a Clear Channel Assessment (CCA) is usually performed before a transmitting end transmits data to evaluate an interference level in a Channel. If the interference is lower than the energy detection threshold (the threshold can be specified by the communication protocol), the sending end considers that the channel is idle, and the sending end can occupy the channel to send data. If the interference level is higher than the detection threshold, the sending end considers that the channel is busy, and the sending end cannot occupy the channel to send data. This is the channel access mechanism of Listen Before Talk (Listen Before Talk, LBT).

Disclosure of Invention

The embodiment of the disclosure provides a data receiving method, a data transmitting method, a data receiving device, a data transmitting device, a communication device and a storage medium.

A first aspect of the embodiments of the present disclosure provides a data receiving method, where the data receiving method includes:

before a sending end sends data, idle channel detection is carried out on an unauthorized frequency spectrum;

when detecting that a channel of the unlicensed spectrum is idle, sending channel occupation indication information;

receiving data in consecutive M transmission resource units after the indication information is sent, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

A second aspect of the embodiments of the present disclosure provides a data transmission method, where the method includes:

before sending data, receiving channel occupation indication information sent by a receiving end after detecting that a channel of an unlicensed spectrum is idle;

transmitting data on the continuous M transmission resource units after receiving the channel occupation indication information, wherein the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

A third aspect of the embodiments of the present disclosure provides a data receiving apparatus, including:

the detection module is configured to perform idle channel detection on the unlicensed spectrum before the sending end sends data;

a first sending module configured to send channel occupancy indication information when detecting that a channel of the unlicensed spectrum is idle;

a first receiving module configured to receive data in M consecutive transmission resource units after the indication information is transmitted, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

A fourth aspect of the embodiments of the present disclosure provides a data transmission apparatus, including:

the second receiving module is configured to receive, before transmitting data, channel occupation indication information transmitted by a receiving end after detecting that a channel of the unlicensed spectrum is idle;

a second sending module, configured to send data on consecutive M transmission resource units after receiving the channel occupancy indication information, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

A fifth aspect of an embodiment of the present disclosure provides a communication device, including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being executed by the processor, where the processor executes the executable program to perform the method according to any of the technical solutions of the first aspect or the second aspect.

A sixth aspect of an embodiment of the present disclosure provides a computer storage medium having an executable program stored thereon; after the executable program is executed by a processor, the method provided by any technical scheme of the first aspect or the second aspect can be realized.

According to the method provided by the embodiment of the disclosure, a receiving end performs idle channel detection on an unauthorized channel before a transmitting end transmits data, and if the idle channel is detected on an unauthorized spectrum, the receiving end transmits channel occupation indication information to the transmitting end, so that interference of a hidden node on data transmission is reduced, on the one hand, one-time transmission of the channel occupation indication information by the receiving end triggers the transmitting end to transmit data on continuous M transmission resource units, switching of data transmission directions (for example, uplink and downlink switching) is reduced, unnecessary operations such as delay and transmission detection caused by switching of the transmission directions are reduced, data transmission continuity is improved, and difficulty in resource scheduling of a network caused by frequent switching of the transmission directions is reduced.

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 embodiments.

Fig. 1 is a block diagram illustrating a wireless communication system in accordance with an exemplary embodiment;

fig. 2 is a schematic diagram illustrating an expanded time slot occupation of a configured grant physical uplink shared channel according to an exemplary embodiment;

fig. 3 is a schematic flow chart of a data reception method according to an exemplary embodiment;

FIG. 4 is a flow diagram illustrating a hidden node according to an example embodiment;

fig. 5 is a diagram illustrating a comparison between two types of configuration grant physical uplink shared channels according to an exemplary embodiment;

fig. 6 is a schematic flow chart of a data reception method according to an exemplary embodiment;

fig. 7 is a flowchart illustrating a method of data transmission according to an example embodiment;

FIG. 8 is a schematic diagram illustrating the structure of a data receiving device according to an exemplary embodiment;

fig. 9 is a schematic diagram illustrating a structure of a data transmission apparatus according to an exemplary embodiment.

Detailed Description

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

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments 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 and all possible combinations of one or more of the associated listed items.

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

In order to better describe any embodiment of the present disclosure, an embodiment of the present disclosure is exemplarily illustrated by taking an application scenario of an intelligent control system of a power meter as an example.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: several terminals 11 and several base stations 12.

Terminal 11 may refer to, among other things, a device that provides voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 11 may be an internet of things terminal, such as a sensor device, a mobile phone (or referred to as a "cellular" phone), and a computer having the internet of things terminal, and may be a fixed, portable, pocket, handheld, computer-included, or vehicle-mounted device, for example. For example, a Station (STA), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote terminal (remote terminal), an access terminal (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user terminal (user equipment, terminal). Alternatively, the terminal 11 may be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 may also be a vehicle-mounted device, for example, a vehicle computer with a wireless communication function, or a wireless terminal externally connected to the vehicle computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp or other roadside device with a wireless communication function.

The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a fourth generation mobile communication (4G) system, which is also called a Long Term Evolution (LTE) system; alternatively, the wireless communication system can be a 5G system, which is also called a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of a 5G system. Among them, the Access Network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).

The base station 12 may be an evolved node b (eNB) used in a 4G system. Alternatively, the base station 12 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DU). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.

The base station 12 and the terminal 11 may establish a wireless connection over a wireless air interface. In various embodiments, the wireless air interface is based on a fourth generation mobile communication network technology (4G) standard; or the wireless air interface is based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

In some embodiments, an E2E (End to End) connection may also be established between terminals 11. Scenarios such as V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication, and V2P (vehicle to vehicle) communication in vehicle networking communication (V2X).

In some embodiments, the wireless communication system may further include a network management device 13.

Several base stations 12 are connected to a network management device 13, respectively. The network Management device 13 may be a Core network device in a wireless communication system, for example, the network Management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the Network management device may also be other core Network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), a Home Subscriber Server (HSS), or the like. The implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.

In the communication of the unlicensed spectrum, in order to solve the hidden node problem, a receiving end assisted channel access method is provided. That is, when it is known that the sending end is about to send data, the receiving end will perform idle channel detection, and if the detection channel is idle, the receiving end will send the indication information of occupying the channel to the sending end. The neighboring node may also hear the indication information, but the indication information is used as interference, and if the interference is higher than a certain threshold value, the neighboring node will back off and will not transmit data.

In the NR or NR-U system, the base station may configure a semi-persistent scheduling Physical Downlink Channel (sps-PDSCH) and/or a grant Physical Uplink Channel (CG-PUSCH) for the terminal. The two transmissions are very similar, and both are configured by the base station with a set of periodic time-frequency resources, and then the base station/terminal can send downlink/uplink data on the time-frequency resources in each period. In addition, referring to fig. 2, in the R16NR-U standard design, the CG-PUSCH design adds an N-slot (slot) extension to the CG-PUSCH in the R15 protocol in order to transmit different upstream data over consecutive N slots. A schematic of which is shown in figure 2 below. The diagonal filled part represents CG-PUSCH, whose symbol position in each slot is the same. The twill fill may also fill the entire time slot. If N is 1, it is equivalent to the case of ordinary periodic time-frequency resource configuration without extension.

As shown in fig. 3, an embodiment of the present disclosure provides a data receiving method, where the data receiving method includes:

s110: before a sending end sends data, idle channel detection is carried out on an unauthorized frequency spectrum;

s120: when detecting that a channel of the unlicensed spectrum is idle, sending channel occupation indication information;

s130: receiving data in consecutive M transmission resource units after the indication information is sent, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

The data receiving method herein can be applied to a receiving end of data, for example, a receiving end of uplink data, i.e., a base station, or a receiving end of downlink data, i.e., a terminal.

Before data transmission, the base station and the terminal perform resource allocation for data transmission. The resource configuration is semi-static and is known by the receiving end before the actual data transmission takes place. Therefore, the receiving end can determine the starting time of sending data by the sending end according to the resource configuration for data transmission. Therefore, in S110, the receiving end may determine in advance when the transmitting end transmits data according to the resource configuration of the data transmitted by the transmitting end, so that idle channel detection, that is, CCA, may be performed on the unlicensed spectrum before transmitting the data, thereby determining whether there is an idle channel on the unlicensed spectrum for the receiving end to receive the data of the transmitting end, and reducing interference of the receiving end to the data transmitted by the transmitting end due to hidden nodes around the receiving end.

If the receiving end detects the unauthorized frequency spectrum around the receiving end, the channel used for transmitting data on the unauthorized frequency spectrum is found to be idle, namely the interference on the unauthorized frequency spectrum monitored by the receiving end is lower than a threshold value, channel occupation indicating information is sent to the receiving end, on one hand, the sending end is informed that the data can be normally sent, and no hidden node exists around the current receiving end, so that the receiving quality and reliability of data transmission can be ensured; on the other hand, the method is equivalent to informing other communication nodes around the receiving end that the channel of the current unlicensed spectrum is occupied, and the communication environment is further deteriorated if the channel is not required to be continuously occupied. The threshold may be agreed upon by the protocol, for example, the threshold may be approximately-47 dBm.

Therefore, in the embodiment of the present disclosure, after detecting a free channel on an unlicensed spectrum, a receiving end sends channel occupancy indication information to a transmitting end. After receiving the channel occupation indication information, the transmitting end transmits data on the continuous M transmission resource units. The transmission mechanism is commonly known by the sending end and the receiving end, so after the channel occupation indication information is sent, the receiving end receives data on the M transmission resource units after the channel occupation indication information is sent.

Taking fig. 4 as an example to illustrate the hidden node, for example, the receiving end RX1 receives the transmission data of the transmitting end TX1, and TX1 performs channel sensing on the unlicensed spectrum at its own location before transmitting the data. When the TX1 monitors that the channel of the unlicensed spectrum is idle, the TX2 actually transmits data to the receiving RX1 and the receiving RX2, respectively, and since the TX2 is far away from the TX1, the TX1 may not monitor the data transmitted by the TX2 on the unlicensed spectrum, and may misunderstand that the unlicensed spectrum is idle around itself, but this interferes with the receiving RX1 to receive the data. For TX1, TX2 is a hidden node. However, if RX1 also performs channel listening to the unlicensed spectrum, RX1 may listen to the signal transmitted by TX2 on the unlicensed spectrum, so that the hidden node may be excluded.

Here, M may be any positive integer, for example, M is a positive integer greater than or equal to 2.

At this time, the consecutive M transmission resource units do not represent that the M transmission resource units are consecutive in the time domain. The M transmission resource units may be discrete in a time domain, for example, an end time of a previous transmission resource unit in two adjacent transmission resource units does not overlap with a start time of a next transmission resource unit. However, there are M transmission resource units in the time domain, and the M transmission resource units are distributed in the time domain in order, for example, the M transmission resource units are distributed two by two adjacently in the distribution. However, the distribution in the time domain of such transmission resource units may be continuous or discrete.

One of the transmission resource units may correspond to one transmission channel, or, alternatively, one transmission cycle.

One transmission period may contain one or more transmission channels. A transmission channel is a time-frequency resource channel that contains one or more symbols that are consecutive in the time domain and occupy certain frequency-domain positions in the frequency domain.

The receiving end sends the channel occupation indication information once, and the sending end sends data on the continuous M transmission resource units, namely the receiving end receives the data on the continuous M transmission resource units instead of one transmission resource unit, so that the uplink and downlink switching times of data sending of the receiving end and the sending end are reduced, and the data sending continuity of the sending end is improved. And because M transmission resource units are distributed adjacently on the time domain distribution of at least the same type of transmission resource units in the continuous M transmission resource units, the transmission time is relatively centralized, the time span of one-time uplink and downlink data transmission is reduced, the difference of the wireless environment is not too large when the time span is small, and the quality and the reliability of the data transmission can be ensured.

In some embodiments, the method further comprises:

and if the receiving end detects that the idle state is busy on the unauthorized frequency spectrum, the receiving end does not send channel occupation indication information to the sending end and stops the data reception of the continuous M transmission resource units after the channel occupation indication information is sent in advance according to the resource configuration.

Similarly, if the sending end does not receive the channel occupation indication information sent by the sending end, the sending end will stop sending data on the transmission resource unit configured according to the resource configuration. Here, the M consecutive transmission resource units are resource units included in the resource allocation.

In the embodiment of the present disclosure, the timing for sending the channel occupation indication information may be a timing after detecting that any channel is idle.

In summary, when the method provided by the embodiment of the present disclosure is used for receiving data, on one hand, interference of a hidden node on data transmission is reduced, and on the other hand, one-time transmission of the channel occupancy indication information by the receiving end triggers the transmitting end to transmit data on M consecutive transmission resource units, thereby reducing switching of data transmission directions (for example, uplink and downlink switching), reducing unnecessary operations such as delay and transmission detection caused by switching of transmission directions, improving data transmission continuity, and reducing difficulty in resource scheduling of a network caused by frequent switching of transmission directions.

For an example of the terminal sending uplink data, the S110 may include:

and before the terminal sends CG-PUSCH uplink data, the base station detects the idle channel of the unauthorized frequency spectrum.

The unlicensed spectrum may be configured with a plurality of channels, and the receiving end performs idle channel detection on a channel on which the transmitting end intends to transmit data, thereby determining whether a corresponding channel is idle.

For example, in this embodiment of the present disclosure, the sending end is a terminal, and the channel on the unlicensed spectrum configured by the resource may be: resources of CG-PUSCH over unlicensed spectrum.

Here, the uplink data of the CG-PUSCH is data transmitted on the CG-PUSCH.

The base station performs idle channel detection on the unlicensed spectrum by the terminal. If the base station detects that the channel of the unlicensed spectrum is idle, the base station may send the channel occupancy indication information to the terminal. And the base station receives data on M continuous CG-PUSCHs after the channel occupation indication information is sent, or the base station receives data on M continuous CG-PUSCH periods after the channel occupation indication information. One CG-PUSCH period includes one or more CG-PUSCHs.

If the channel for data transmission is CG-PUSCH, the resource allocation may be: and C, CG-PUSCH resource configuration. The CG-PUSCH resource configuration indicates the time-frequency domain resource of the CG-PUSCH.

Of course, if the base station detects that the CG-PUSCH is busy before the terminal transmits data, the CG-PUSCH is not busy, and the terminal does not receive the channel occupancy indication information, and the terminal does not transmit the CG-PUSCH until the terminal receives the channel occupancy indication information transmitted by the base station.

If the transmission resource unit is the CG-PUSCH, the M is: the number of CG-PUSCHs contained in one CG-PUSCH period.

The CG-PUSCH included in the CG-PUSCH period herein may be a non-extended normal CG-PUSCH or an extended CG-PUSCH.

The non-extended normal CG-PUSH may include one slot, and the extended CG-PUSCH may include N slots.

And one said CG-PUSCH period may comprise one or more normal CG-PUSCHs, or one or more extended CG-PUSCHs.

Referring to fig. 2, 4 CG-PUSCHs are extended in one CG-PUSCH period within one period including 10 slots.

Referring to fig. 5, the CG-PUSCH may have two different sets of configurations. The two different CG-PUSCH periods are different, namely a 1-slot period and a 2-slot period. For example, CG-PUSCH1-1, CG-PUSCH1-2, CG-PUSCH1-3, CG-PUSCH1-4, CG-PUSCH1-5, and CG-PUSCH1-6, corresponding to the filled squares in FIG. 5, are a period of 1 slot. CG-PUSCH2-1, CG-PUSCH2-2, and CG-PUSCH2-3, corresponding to the diagonal filled boxes in FIG. 5, are 2 slot periods.

The aforementioned transmission resource unit may be any one of the two sets of CG-PUSCH configurations.

Taking the base station sending as downlink transmission, the S110 may include:

and before the base station sends downlink data of the SPS-PDSCH, the terminal detects the idle channel of the unlicensed spectrum.

The receiving end of the downlink transmission is a terminal. The downlink data of the SPS-PDSCH is the downlink data transmitted on the SPS-PDSCH.

Therefore, the terminal performs CCA on the unlicensed spectrum before the base station transmits SPS-PDSCH downlink data according to the resource configuration, and if the channel of the unlicensed spectrum is detected to be idle, the terminal transmits channel occupation indication information to the base station; if the base station receives the channel occupancy indication information, the base station may send data on M consecutive SPS-PDSCHs after receiving the channel occupancy indication information, or the base station may send data on M consecutive SPS periods after receiving the channel occupancy indication information. One SPS period contains one or more SPS-PDSCHs.

If the terminal detects that the channel is busy on the SPS-PDSCH of the unlicensed spectrum, the terminal does not send channel occupation indication information to the base station, and does not receive data on the continuous M SPS-PDSCHs or continuous M SPS-PDSCHs periods of the channel detection busy channel occupation indication information.

Too large M may cause a decrease in transmission quality due to a change in the radio environment during subsequent transmission of a later transmission resource unit; if M is set too small, the switching of transmission directions is still too frequent, so the value of M needs to be moderate. For example, the value of M is inversely related to the duration of a transmission resource unit. For example, the transmission resource unit is a transmission cycle, the longer the duration of the transmission cycle is, the shorter the value of M can be set, and the shorter the transmission cycle is, the larger the value of M can be set. For another example, if the transmission resource unit is a transmission channel, the longer the duration of the transmission channel is, the shorter the value of M may be set, and the shorter the duration of the transmission channel is, the larger the value of M may be set.

In some embodiments, as shown in fig. 6, the method further comprises:

s100: said M transmitted by higher layer signaling.

For example, if the receiving end is a terminal, M transmitted from the base station is received through higher layer signaling. And if the receiving end is the base station, the base station needs to send the M to the terminal. In the disclosed embodiment, M is carried in higher layer signaling. The higher layer signaling may be: radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling issues the M.

In other embodiments, the M may also be carried by Downlink Control Information (DCI).

And the M is transmitted by adopting a high-level signaling, and the method has the characteristic of strong transmission flexibility.

As shown in fig. 7, an embodiment of the present disclosure provides a data transmission method, where the data transmission method includes:

s210: before sending data, receiving channel occupation indication information sent by a receiving end after detecting that a channel of an unlicensed spectrum is idle;

s220: transmitting data on the continuous M transmission resource units after receiving the channel occupation indication information, wherein the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

The data transmission method herein is applied to a transmitting end of data, which may be a base station or a terminal. For example, if the transmitted data is downlink data, the transmitting end may be a base station; if the transmitted data is uplink data, the transmitting end may be a terminal.

Before sending data, receiving channel occupation indication information sent by a receiving end after an unauthorized spectrum detects an idle channel, wherein if the channel occupation indication information is received, the sending end can think that no hidden node interfering data transmission exists near the receiving end.

And if the channel occupation indication information is received, the sending end sends data on the continuous M transmission resource units after receiving the channel occupation indication information.

And if the channel occupation indication information is not received, the sending end does not send data on the transmission resources according to the resource configuration.

And if the channel occupation indication information is received, the data is sent on the continuous M transmission resource units, and the frequent switching of the data transmission direction is reduced. M here may be any positive integer, and optionally M is a positive integer equal to or greater than 2.

The transmission resource unit herein may be a transmission channel or a transmission period. One transmission period may include one or more transmission channels.

In some embodiments, the S210 may include:

before the base station sends the downlink data of the SPS-PDSCH, the receiving terminal sends the indication occupying the channel occupying indication information of the SPS-PDSCH after detecting that the unlicensed spectrum is idle.

The base station serves as a sending end, and before sending the downlink data of the SPS-PDSCH, the base station receives channel occupation indication information sent by the terminal after a channel of an unlicensed spectrum is idle. Correspondingly, S220 may include: after receiving the channel occupancy indication information, data is transmitted on consecutive M SPS-PDSCH channels or consecutive M SPS periods.

In other embodiments, the S210 may include:

before sending CG-PUSCH uplink data, a terminal receives channel occupation indication information which is sent by a base station after detecting that a channel of an unauthorized frequency spectrum is idle and indicates to occupy the CG-PUSCH.

The terminal serves as a sending end, before sending uplink data, the terminal receives channel occupation indication information sent by the base station after detecting that a channel of an unlicensed spectrum is idle, and after receiving the channel occupation indication information, the terminal sends data on M CG-PUSCH or M CG-PUSCH periods continuously.

In some embodiments, the method further comprises: transmitting the M through higher layer signaling.

If the sending end is a base station, the base station sends M to the terminal through a high layer; if the sending end is a terminal, the terminal receives a high-level signaling carrying M sent by a base station.

As shown in fig. 8, an embodiment of the present disclosure provides a data receiving apparatus, including:

a detection module 110, configured to perform idle channel detection on an unlicensed spectrum before a transmitting end transmits data;

a first sending module 120 configured to send channel occupancy indication information when detecting that a channel of the unlicensed spectrum is idle;

a first sending module 130, configured to receive data on M consecutive transmission resource units after the indication information is sent, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

In some embodiments, the detection module 110, the first sending module 120, and the first sending module 130 may be program modules; after being executed by the processor, the program module can detect the idle channel of the unlicensed spectrum before transmitting data by the transmitting end, transmit the channel occupation indication information and receive the data.

In some embodiments, the detection module 110, the first sending module 120, and the first sending module 130 may be a combination of hardware and software modules; the soft and hard combining module includes but is not limited to: a programmable array; the programmable array includes, but is not limited to, a complex programmable array or a field programmable array.

In some embodiments, the detecting module 110, the first sending module 120, and the first sending module 130 further include: a pure hardware module; the pure hardware modules include, but are not limited to: an application specific integrated circuit.

In some embodiments, the detecting module 110 is configured to perform idle channel detection on the unlicensed spectrum by the base station before the terminal transmits uplink data of the CG-PUSCH.

In some embodiments, the transmission resource unit is the CG-PUSCH, then M is equal to: the number of CG-PUSCHs contained in one CG-PUSCH period.

In some embodiments, the detecting module 110 is configured to perform idle channel detection on the unlicensed spectrum by the terminal before the base station transmits downlink data of the SPS-PDSCH.

In some embodiments, the apparatus further comprises:

a first transmission module configured to transmit the M through higher layer signaling.

In some embodiments, a value of M is inversely related to a duration of the transmission resource unit.

As shown in fig. 9, an embodiment of the present disclosure provides a data transmission apparatus, including:

a second receiving module 210, configured to receive, before transmitting data, channel occupation indication information sent by a receiving end after detecting that a channel of an unlicensed spectrum is idle;

a second sending module 220, configured to send data on M consecutive transmission resource units after receiving the channel occupancy indication information, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.

In some embodiments, the second sending module 220 and the second receiving module 210 may be program modules; the program modules can realize the functions of the second receiving module 210 and the second sending module 220 after being executed by the processor.

In some embodiments, the second sending module 220 and the second receiving module 210 can be a combination of hardware and software modules; the soft and hard combining module includes but is not limited to: a programmable array; the programmable array includes, but is not limited to, a complex programmable array or a field programmable array.

In some embodiments, the second sending module 220 and the second receiving module 210 further include: a pure hardware module; the pure hardware modules include, but are not limited to: an application specific integrated circuit.

In some embodiments, the second receiving module 210 is configured to receive, before the base station transmits downlink data of the SPS-PDSCH, channel occupancy indication information indicating occupancy of the SPS-PDSCH, which is transmitted by the receiving terminal after detecting that the unlicensed spectrum is free.

In some embodiments, the second receiving module 210 is configured to receive, before transmitting the uplink data of the CG-PUSCH, channel occupation indication information indicating that the CG-PUSCH is occupied, where the channel occupation indication information is transmitted by the base station after detecting that a channel of an unlicensed spectrum is idle.

In some embodiments, the apparatus further comprises:

a second transmission module configured to transmit the M through higher layer signaling.

The invention provides a receiving end auxiliary channel access method in an unlicensed spectrum, in the method, before a terminal sends CG-PUSCH uplink data, a base station monitors a channel and sends channel occupation indication information occupying the channel according to the result of the channel monitoring. The terminal can transmit uplink information on the next M continuous CG-PUSCHs every time the terminal receives one channel occupation indication.

The scheme can also be changed into downlink data transmission, the base station sends downlink data of the SPS PDSCH, the terminal sends channel occupation indication information, and the base station can transmit downlink information on the next continuous M SPS PDSCHs after receiving one channel occupation indication information.

In the system of the unauthorized frequency band, if the terminal is configured with CG-PUSCH, the base station detects an idle channel before the terminal sends CG-PUSCH, and if the channel is detected to be idle, the base station sends channel occupation indication information to the terminal.

And after receiving the channel occupation indication sent by the base station each time, the terminal can transmit uplink information on the next continuous M CG-PUSCHs. By the method, the base station can indicate M uplink transmissions by sending the channel occupation indication once, thereby reducing the times of uplink and downlink switching and reducing the difficulty of resource scheduling of the network caused by frequent uplink and downlink switching.

M is configured by the base station through higher layer signaling (e.g., including but not limited to RRC layer signaling or MAC layer signaling). The value of M should be suitable, e.g. the value of M should not be too large. Since if M is too large, this means a longer time span over which the interference in the reception environment on the base station side may have changed significantly. If the CG-PUSCH configuration of the terminal has a short period, for example, 7 symbols (symbols) (a slot may contain 14 symbols), M may be a little larger value, for example, M is 4, and if the CG-PUSCH configuration of the terminal has a longer period, for example, 5 slots, M may be a smaller value, for example, M is 1.

With CG-PUSCH configured, M may be equal to N. N is the number of CG-PUSCHs contained in one period under the condition of configuring CG-PUSCH extension.

It is also possible that the terminal will configure multiple CG-PUSCH sets of resources on which M should count. As shown in fig. 5, the terminal configures 2 sets of CG-PUSCH configurations, with different periods, which are 1 slot period and 2 slot periods respectively. M may be set to 3 at this time.

The embodiment of the present disclosure provides a communication device, which includes a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being executed by the processor, where the processor executes a data transmission method applied to a transmitting end provided in any of the foregoing technical solutions when executing the executable program, or executes a data reception method applied to a receiving end provided in any of the foregoing technical solutions.

The communication device may be the aforementioned base station or terminal (terminal may also be referred to as UE).

The transceiver includes one or more antennas and a radio frequency link to which the antennas are connected.

The memory may include various types of storage media, non-transitory computer storage media, that can continue to remember to store information thereon after power is removed from the communication device. Here, the communication apparatus includes a base station or a user equipment.

The processor may be connected to the memory via a bus or the like for reading the executable program stored on the memory, e.g. as in at least one of fig. 3, 6 and 7.

The disclosed embodiments provide a computer storage medium having an executable program stored therein; the executable program, when executed by a processor, is capable of implementing the method as set forth in any of the first or second aspects, for example, as shown in at least one of fig. 3, 6, and 7.

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

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

A data receiving method, comprising:

before a sending end sends data, idle channel detection is carried out on an unauthorized frequency spectrum;

when detecting that a channel of the unlicensed spectrum is idle, sending channel occupation indication information;

receiving data in consecutive M transmission resource units after the indication information is sent, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.
The method of claim 1, wherein the performing idle channel detection on the unlicensed spectrum before transmitting data at the transmitting end comprises:

and before the terminal sends uplink data configured with a grant physical uplink shared channel CG-PUSCH, the base station detects the idle channel of the unlicensed spectrum.
The method of claim 2, wherein if the transmission resource unit is the CG-PUSCH, the M is: the number of CG-PUSCHs contained in one CG-PUSCH period.
The method of claim 1, wherein the performing idle channel detection on the unlicensed spectrum before transmitting data at the transmitting end comprises:

and before the base station sends downlink data of a semi-continuous physical downlink shared channel (SPS-PDSCH), the terminal detects the idle channel of the unlicensed spectrum.
The method of any of claims 1 to 4, wherein the method further comprises:

said M transmitted by higher layer signaling.
The method according to any one of claims 1 to 3, wherein a value of M is inversely related to a duration of the transmission resource unit.
A method for transmitting data, comprising:

before sending data, receiving channel occupation indication information sent by a receiving end after detecting that a channel of an unlicensed spectrum is idle;

transmitting data on the continuous M transmission resource units after receiving the channel occupation indication information, wherein the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.
The method of claim 7, wherein the receiving, before transmitting data, channel occupancy indication information transmitted by a receiving end after detecting that a channel of an unlicensed spectrum is idle comprises:

before the base station sends the downlink data of the SPS-PDSCH, the receiving terminal sends the indication occupying the channel occupying indication information of the SPS-PDSCH after detecting that the unlicensed spectrum is idle.
The method of claim 7, wherein the receiving, before transmitting data, channel occupancy indication information transmitted by a receiving end after detecting that a channel of an unlicensed spectrum is idle comprises:

before sending CG-PUSCH uplink data, a terminal receives channel occupation indication information which is sent by a base station after detecting that a channel of an unauthorized frequency spectrum is idle and indicates to occupy the CG-PUSCH.
The method of any of claims 7 to 9, wherein the method further comprises:

transmitting the M through higher layer signaling.
A data receiving apparatus, comprising:

the detection module is configured to perform idle channel detection on the unlicensed spectrum before the sending end sends data;

a first sending module configured to send channel occupancy indication information when detecting that a channel of the unlicensed spectrum is idle;

a first receiving module configured to receive data in M consecutive transmission resource units after the indication information is transmitted, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.
The apparatus of claim 11, wherein the detecting module is configured to perform clear channel detection on the unlicensed spectrum by the base station before the terminal transmits uplink data configuring a licensed physical uplink shared channel (CG-PUSCH).
The apparatus of claim 12, wherein the transmission resource unit is the CG-PUSCH, then the M is equal to: the number of CG-PUSCHs contained in one CG-PUSCH period.
The apparatus of claim 11, wherein the detection module is configured to perform clear channel detection on the unlicensed spectrum by the terminal before a base station transmits downlink data of an SPS-PDSCH.
The apparatus of any of claims 11 to 13, wherein the apparatus further comprises:

a first transmission module configured to transmit the M through higher layer signaling.
The apparatus of any one of claims 11 to 13, wherein a value of M is inversely related to the transmission period.
A data transmission apparatus, comprising:

the second receiving module is configured to receive, before transmitting data, channel occupation indication information transmitted by a receiving end after detecting that a channel of the unlicensed spectrum is idle;

a second sending module, configured to send data on consecutive M transmission resource units after receiving the channel occupancy indication information, where the M transmission resource units include: m transmission channels or M transmission periods; and M is a positive integer.
The apparatus of claim 17, wherein the second receiving module is configured to receive, before the base station transmits downlink data of the SPS-PDSCH, channel occupancy indication information indicating occupancy of the SPS-PDSCH, which is transmitted by the receiving terminal after detecting that an unlicensed spectrum is idle.
The apparatus of claim 17, wherein the second receiving module is configured to receive, by the terminal, before transmitting the uplink data of the CG-PUSCH, channel occupancy indication information indicating occupancy of the CG-PUSCH transmitted by the base station after detecting that a channel of an unlicensed spectrum is idle.
The apparatus of any one of claims 17 to 19, wherein the apparatus further comprises:

a second transmission module configured to transmit the M through higher layer signaling.
A communication device comprising a processor, a transceiver, a memory, and an executable program stored on the memory and executable by the processor, wherein the processor, when executing the executable program, performs a method as provided in any one of claims 1 to 6 or 7 to 10.
A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing a method as provided in any one of claims 1 to 6 or 7 to 10.