CN113273274A - Method and apparatus for wireless communication - Google Patents

Method and apparatus for wireless communication Download PDF

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Publication number
CN113273274A
CN113273274A CN201980087248.7A CN201980087248A CN113273274A CN 113273274 A CN113273274 A CN 113273274A CN 201980087248 A CN201980087248 A CN 201980087248A CN 113273274 A CN113273274 A CN 113273274A
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domain resource
frequency domain
information
channel detection
frequency
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CN113273274B (en
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吴作敏
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

A method and apparatus of wireless communication, the method comprising: the first device sends first information on the first frequency domain resource, wherein the first information is used for indicating the second device to receive second information or send third information on the second frequency domain resource.

Description

Method and apparatus for wireless communication Technical Field
The embodiment of the application relates to the field of communication, in particular to a wireless communication method and device.
Background
In a communication system based on an unlicensed frequency band, a communication device follows a principle of "Listen Before Talk (LBT)", that is, Before the communication device transmits a signal on a channel of an unlicensed frequency spectrum, it needs to perform channel sensing first, and determines whether data transmission can be performed according to a channel sensing result, so that a resource utilization rate is low. Therefore, how to implement data scheduling on the unlicensed frequency band to improve the resource utilization rate is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a wireless communication method and equipment, which are beneficial to improving the resource utilization rate, so that the system performance is improved.
In a first aspect, a method of wireless communication is provided, including: the first device sends first information on the first frequency domain resource, wherein the first information is used for indicating the second device to receive second information or send third information on the second frequency domain resource
In a second aspect, a method of wireless communication is provided, including: the second device receives first information on the first frequency domain resource, wherein the first information is used for indicating the second device to receive second information or send third information on the second frequency domain resource.
In a third aspect, a device for wireless communication is provided, which is configured to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the apparatus comprises means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.
In a fourth aspect, there is provided a wireless communication device configured to perform the method of the second aspect or any possible implementation manner of the second aspect. In particular, the apparatus comprises means for performing the method of the second aspect described above or any possible implementation of the second aspect.
In a fifth aspect, an apparatus for wireless communication is provided, the apparatus comprising: including a processor and memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.
In a sixth aspect, there is provided an apparatus for wireless communication, the apparatus comprising: including a processor and memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.
In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or its implementation manners.
Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.
In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.
In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.
A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.
Based on the above technical solution, the first device may send the first information on the first frequency domain resource, and is configured to schedule the second device to receive the second information or send the third information on the second frequency domain resource, so that scheduling of cross-frequency domain resources can be achieved, which is beneficial to improving resource utilization rate, and thus improving system performance.
Drawings
Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of a method of wireless communication provided by an embodiment of the present application.
Fig. 3 is a schematic diagram of a method of wireless communication of an embodiment of the present application.
Fig. 4 is a schematic diagram of another method of wireless communication of an embodiment of the present application.
Fig. 5 is a schematic diagram of yet another method of wireless communication of an embodiment of the present application.
Fig. 6 is a schematic diagram of yet another method of wireless communication of an embodiment of the present application.
Fig. 7 is a schematic diagram of yet another method of wireless communication of an embodiment of the present application.
Fig. 8 is a schematic diagram of yet another method of wireless communication of an embodiment of the present application.
Fig. 9 is a schematic diagram of a method of wireless communication provided by an embodiment of the present application.
Fig. 10 is a schematic block diagram of a device for wireless communication according to an embodiment of the present disclosure.
Fig. 11 is a schematic block diagram of a device for wireless communication according to an embodiment of the present disclosure.
Fig. 12 is a schematic block diagram of a communication device according to another embodiment of the present application.
Fig. 13 is a schematic block diagram of a chip provided in an embodiment of the present application.
Fig. 14 is a schematic block diagram of a communication system according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be understood that the embodiments of the present application may be applied to various communication systems, such as: global System for Mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) systems, LTE-a systems over unlicensed spectrum, New Radio (NR) systems, and Evolution systems of NR systems, such as NR (NR-base Access to unlicensed spectrum, NR-U) systems, Mobile communication systems (GSM) systems, UMTS systems, Wireless Local Area Networks (WLAN) systems, Wireless Local Area Networks (UMTS) systems, WiFi) or next generation communication systems, etc.
Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication.
The communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.
When the communication system in the embodiment of the present application is applied to an unlicensed spectrum and a network deployment scenario is CA, the CA network deployment scenario may be that a main carrier is on the licensed spectrum, an auxiliary carrier is on the unlicensed spectrum, and the main carrier and the auxiliary carrier are connected through an ideal backhaul (backhaul).
When the communication system in the embodiment of the application is applied to the unlicensed spectrum and the network deployment scenario is DC, the DC network deployment scenario may be that the primary carrier is on the licensed spectrum, the secondary carrier is on the unlicensed spectrum, and the primary carrier and the secondary carrier are connected by the non-ideal backhaul, where a system on the primary carrier may belong to a different system from a system on the secondary carrier, for example, a system on the primary carrier is an LTE system and a system on the secondary carrier is an NR system, or a system on the primary carrier may also belong to the same system as a system on the secondary carrier, for example, both systems on the primary carrier and the secondary carrier are LTE systems or both NR systems.
When the communication system in the embodiment of the present application is applied to the unlicensed spectrum and the networking scenario is SA, the terminal device may access the network through the system on the unlicensed spectrum.
Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.
The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.
Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.
Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.
Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the example of the present application, the channel access scheme (or the channel detection scheme) on the unlicensed frequency band may include the following types:
type 1(Category 1, Cat-1LBT for short), where the channel detection of type 1 is to transmit immediately or immediately after the switching time interval is over without LBT, where the interval from the end of uplink transmission to the start of downlink transmission is not more than 16 μ s;
type 2(Category 2, called Cat-2LBT for short), where the channel detection of type 2 is single channel detection, that is, when the result of the single channel detection is that the channel is occupied, the channel detection is considered to be failed, and when the result of the single channel detection is that the channel is idle, the channel detection is considered to be successful. Specifically, after determining that the first information needs to be sent, the first device may perform the length T on the resource for sending the first information before sending the first informationone-shotIf the channel is idle, the LBT may be considered to be successful, i.e. the channel detection is successful, and if the channel is occupied, the LBT may be considered to be failed, i.e. the channel detection is failed. Wherein, Tone-shotMay be indicated by the network device or determined based on traffic priority or specified by the communication system. Alternatively, Tone-shotIs 25 microseconds in length.
Type 4(Category 4, called Cat-4LBT for short), where the channel detection of type 4 is channel detection based on a contention window, and when the channel detection results in the contention window are all channel idle, the channel detection is considered to be successful, otherwise, the channel detection is considered to be failed. Optionally, the size of the contention window may be determined according to a channel access priority, and the channel access priority may correspond to a set of channel access parameters, as shown in table 1, when performing channel detection according to Cat-4LBT, the channel detection may be performed according to the channel access parameters corresponding to the channel access priority. It should be understood that a smaller number corresponding to the channel access priority in table 1 indicates a higher priority. Alternatively, the channel access priority may be determined according to a length of a time domain resource of the first signal to be transmitted or a priority of the first signal to be transmitted.
Alternatively, the channel detection of type 4 may include the following steps:
s1, setting the count value N of the counter to NinitWherein N isinitIs 0 to CWpUniformly distributed random numbers, performing step S4;
s2, if N is greater than zero, subtracting 1 from the counter, that is, N-1;
s3, making the length of the channel Tsl(wherein, TslLength 9us, i.e. CCA slot length 9us), and if the CCA slot is idle, perform step S4; otherwise, go to step S5;
s4, if N is equal to zero, ending the channel access process; otherwise, go to step S2;
s5, making the time length of the channel Td(T d＝16+m p9(us)) that at least one CCA slot is occupied or that all CCA slots are free;
s6, if the channel detection result is TdIf all CCA slots are idle within the time, step S4 is executed; otherwise, step S5 is executed.
It should be noted that in the contention window based channel detection, the channel access procedure may be endedThe channel detection is considered successful, otherwise, the channel detection is considered failed, and the channel detection is not considered successful when the channel is idle. Wherein CWpAnd mpMay be determined according to the priority of the service.
TABLE 1
Channel access priority (p) m p CW min,p CW max,p T mcot,p Allowable size of CW
1 1 3 7 2ms {3,7}
2 1 7 15 3ms {7,15}
3 3 15 63 8ms/10ms {15,31,63}
4 7 15 1023 8ms/10ms {15,31,63,127,255,511,1023}
Wherein CWmin,pCWs corresponding to priority p for channel accesspMinimum value of value, CWmax,pCWs corresponding to priority p for channel accesspMaximum value of value, Tmcot,pThe maximum time length that can be occupied by signal transmission corresponding to the channel access priority p.
It should be understood that, in the embodiment of the present application, as the standard is updated and developed, the channel access scheme on the unlicensed frequency band may also include other types, or several types of channel detection schemes described above may also be adjusted or updated, which is not specifically limited in the embodiment of the present application.
Fig. 2 is a schematic flow chart of a method for wireless communication according to an embodiment of the present disclosure. Alternatively, the method 200 may be executed by a network device or a terminal device in the communication system shown in fig. 1, as shown in fig. 2, the method may include the following:
s210, a first device sends first information on a first frequency domain resource, where the first information is used to instruct a second device to receive second information or send third information on a second frequency domain resource.
That is, the first information on the first frequency domain resource may be used to schedule the second information or the third information on the second frequency domain resource, so that the method for wireless communication according to the embodiment of the present application may implement data scheduling across frequency domain resources, thereby improving the utilization rate of the frequency domain resources and improving the system performance.
Optionally, in some embodiments, both the first frequency domain resource and the second frequency domain resource may be frequency domain resources on an unlicensed frequency band, that is, the embodiments of the present application can implement scheduling of cross-frequency domain resources on the unlicensed frequency band.
Optionally, in other embodiments, the first frequency domain resource may be a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unlicensed frequency band, that is, the embodiments of the present application may implement data scheduling of the unlicensed frequency band by the authorized frequency band.
Alternatively, in this embodiment of the present application, the first frequency-domain resource and the second frequency-domain resource may be in units of Bandwidth parts (BWPs), carriers, sub-bands (subbands), or other frequency-domain units, which is not limited in this embodiment of the present application. For example, the first frequency-domain resource may be a first BWP and the second frequency-domain resource may be a second BWP. For another example, the first frequency domain resource may be a first carrier and the second frequency domain resource may be a second carrier. For another example, the first frequency-domain resource may be a first sub-band and the second frequency-domain resource may be a second sub-band.
It should be understood that the embodiments of the present application may be applied to various data scheduling scenarios, such as scheduling of downlink data, scheduling of uplink data, or scheduling of sidestream data.
For example, the first device may be a network device, the second device may be a terminal device, the first information may be downlink control information, and the second information may be downlink information, that is, the first device may schedule the second device to receive the downlink information.
For another example, the first device may be a network device, the second device may be a terminal device, the first information may be downlink control information, and the third information may be uplink information, that is, the first device may schedule the second device to transmit the uplink information.
For another example, the first device may be a terminal device, the second device may be a terminal device, the first information may be sidestream control information, and the third information may be sidestream information, that is, the first device may schedule the second device to transmit or receive sidestream information.
Alternatively, in some embodiments, the first Information may be a Physical Downlink Control Channel (PDCCH), or Downlink Control Information (DCI) in the PDCCH, or may also be a Downlink Signal or a Downlink Channel, and the second Information may be a Physical Downlink Shared Channel (PDSCH), a Channel State Information Reference Signal (Channel-State Information-Reference Signal, CSI-RS), a part or all of a Synchronization Signal Block (SSB), a Demodulation Reference Signal (DMRS), a Positioning Reference Signal (PRS), a Tracking Reference Signal (SRS, TRS), or may also be other Signals or channels, for example, a Sounding Reference Signal (Sounding Reference Signal, PRS), a Tracking Reference Signal (SRS-Reference Signal, PT-RS), which is not limited in the examples of the present application.
It should be understood that the SSB herein can be used for communication device access network and radio resource management measurement, DMRS can be used for demodulation of channels, CSI-RS can be used for measurement of downlink channels, and PT-RS can be used for downlink time-frequency synchronization or phase tracking. It should be understood that, in this embodiment of the present application, the second information may include a downlink channel or a downlink signal with a different name and a different function from the above, and may also include a downlink channel or a downlink signal with a different name and a same function as the above, which is not limited in this application.
Optionally, in other embodiments, the first information may be a PDCCH, or a DCI in the PDCCH, or may also be a downlink signal or a downlink Channel, and the third information may be a Physical Uplink Shared Channel (PUSCH), an SRS, a PT-RS, or may also be other Uplink signals or Uplink channels, for example, part or all of CSI-RS and SSB signals, DMRS, PRS, and TRS, which is not limited in this embodiment of the present invention.
It should be understood that the SRS can be used for measurement of uplink or sidelink channels, and the PT-RS can be used for uplink or sidelink time-frequency synchronization or phase tracking. It should be understood that, in the embodiment of the present application, the third information may include an uplink channel or an uplink signal or a side-line channel or a side-line signal that has the same name and different function from the above, and may also include an uplink channel or an uplink signal or a side-line channel or a side-line signal that has the same name and different function from the above, which is not limited in the present application.
Optionally, in some embodiments, the first device may send the first information on the first frequency domain resource by directly sending the first information on the first frequency domain resource without performing channel detection on a second frequency domain resource by the first device; or in other embodiments, the first device may first perform channel detection on the second frequency-domain resource, determine whether the second frequency-domain resource is available, and transmit the first information on the first frequency-domain resource if the second frequency-domain resource is available.
For convenience of illustration and understanding, a first device transmits first information on a first frequency domain resource, the first information being used for scheduling a second device to receive second information on a second frequency domain resource, denoted as embodiment 1, and the first device transmits the first information on the first frequency domain resource, the first information being used for scheduling a second device to transmit third information on the second frequency domain resource, denoted as embodiment 2.
In this embodiment 1, the first device may further send the second information on the second frequency-domain resource, optionally, in some embodiments, the first device may send the second information directly on the second frequency-domain resource without performing channel detection on the second frequency-domain resource, or in other embodiments, the first device may also send the second information if it is determined that the second frequency-domain resource is available.
Similarly, in this embodiment 2, the second device may further send the third information on the second frequency-domain resource, optionally, in some embodiments, the second device may send the third information directly on the second frequency-domain resource without performing channel detection on the second frequency-domain resource, or in other embodiments, the second device may also send the third information if it is determined that the second frequency-domain resource is available.
It should be understood that, in this embodiment of the present application, a manner of performing channel detection on the second frequency domain resource by the first device and the second device is not specifically limited, for example, the channel detection may be performed by using the Cat-2LBT, or may also be performed by using the Cat-4LBT, or may also be performed by using another newly added channel detection method, and the like, which is not limited in this embodiment of the present application.
Hereinafter, specific implementations of embodiments 1 and 2 will be described with reference to specific examples shown in fig. 3 to 8.
It should be understood that fig. 3 to fig. 5 are specific examples of embodiment 1, wherein the first device is a network device, the second device is a terminal device, the first information is a PDCCH, the second information is a PDCCH, the first frequency-domain resource is a first BWP, that is, BWP 1, and the second frequency-domain resource is a second BWP, that is, BWP 2. Fig. 6 to 8 are specific examples of embodiment 2, where the first device is a network device, the second device is a terminal device, the first information is a PDCCH, the third information is a PUSCH, the first frequency-domain resource is a first BWP, that is, BWP 1, and the second frequency-domain resource is a second BWP, that is, BWP 2.
Example 1:
in this embodiment 1, the second information is sent by the first device, and the first device wants to send the second information on the second frequency-domain resource, and needs to obtain the usage right of the second frequency-domain resource, so that the first device can perform channel detection on the second frequency-domain resource before sending the second information, and determine whether the second frequency-domain resource is available.
As an alternative embodiment of the embodiment 1, noted as embodiment 1.1, the network device may first determine whether the second BWP is available, and then send the PDCCH if the second BWP is available, and if the second BWP is not available, the network device may not send the PDCCH. Specifically, the network device may perform channel detection on the second BWP before transmitting the PDCCH to determine whether the second BWP is available.
Optionally, in some embodiments, after transmitting the PDCCH and before transmitting the PDSCH, the network device may further determine whether a second BWP is available, and in case the second BWP is available, retransmit the PDSCH. Specifically, the network device may perform channel detection on the second BWP after transmitting the PDCCH and before transmitting the PDSCH to determine whether the second BWP is available, as shown in fig. 3.
Therefore, when the network device wants to schedule the PDSCH on the second BWP through the PDCCH on the first BWP, the network device may perform channel detection on the second BWP before transmitting the PDCCH, which can ensure that the second BWP can be used for scheduling data, and further perform channel detection on the second BWP before transmitting the PDSCH, which is beneficial to ensure that the second BWP is indeed used for scheduling data when transmitting the PDSCH.
Optionally, as an optional embodiment of the embodiment 1.1, the network device may first perform channel detection on the second BWP by using a first channel detection mechanism, determine whether to transmit a PDCCH for scheduling a PDSCH on the second BWP, if the second BWP is available, the network device may transmit the PDCCH, further, before transmitting the PDSCH, the network device may further perform channel detection on the second BWP by using a second channel detection mechanism, determine whether the second BWP is available, and retransmit the PDSCH if the second BWP is available.
It should be understood that, in the embodiment of the present application, the contention window-based channel detection may correspond to the Cat-4LBT described above, and the single channel detection may correspond to the Cat-2LBT described above, and for specific implementation, reference is made to the related description of the foregoing embodiment, which is not repeated herein.
Optionally, in some embodiments, the first channel detection mechanism may be contention window-based channel detection, the second channel detection mechanism may be contention window-based channel detection, and first performing channel detection on the second BWP using Cat-4LBT may ensure that the second BWP is available, i.e., allow data to be scheduled on the second BWP at this time, and further perform channel detection on the second BWP using Cat-4LBT before sending PDSCH to ensure that the current channel is actually available.
Optionally, when the first channel detection mechanism and the second channel detection mechanism are both Cat-4LBT, the same channel access priority may be used, or different channel access priorities may be used, that is, the first channel detection mechanism and the second channel detection mechanism may use the same parameters for channel detection, or different parameters for channel detection, where the parameters may include, but are not limited to, some or all of the parameters in table 1.
Optionally, in other embodiments, the first channel detection mechanism may be contention window-based channel detection, the second channel detection mechanism may be single channel detection, and first performing channel detection on the second BWP by using Cat-4LBT may ensure that the second BWP is available, that is, allowing data to be scheduled on the second BWP at this time, and then performing channel detection on the second BWP by using Cat-2LBT may further ensure that the current channel is actually available.
Optionally, in still other embodiments, the first channel detection mechanism may be single channel detection, the second channel detection mechanism may be contention window-based channel detection, and the performing channel detection on the second BWP by using Cat-2LBT is to preliminarily listen to a channel on the second BWP, determine that the channel is available, and further perform channel detection on the second BWP by using Cat-4LBT, which may ensure that the current channel is actually available.
Optionally, in still other embodiments, the first channel detection mechanism may be single channel detection, the second channel detection mechanism may be single channel detection, performing channel detection on the second BWP using Cat-2LBT may primarily listen to a channel on the second BWP, determine that the channel is available, and further perform channel detection using Cat-2LBT, which may ensure that the current channel is actually available.
It should be understood that, in the embodiment of the present application, the channel detection manners of the first channel detection mechanism and the second channel detection mechanism are merely examples, and the embodiment of the present application does not limit this.
As another alternative embodiment of embodiment 1, noted as embodiment 1.2, the network device may not perform channel detection on the second BWP before sending the PDCCH, perform channel detection on the second BWP after sending the PDCCH and before sending the PDSCH, and send the PDSCH again if determining that the second BWP is available, as shown in fig. 4.
Therefore, when the network device wants to schedule the PDSCH on the second BWP through the PDCCH on the first BWP, the network device may perform channel detection on the second BWP after transmitting the PDCCH and before transmitting the PDSCH, which is beneficial to ensure that the second BWP is available for transmitting the PDSCH.
Optionally, as an optional embodiment of this embodiment 1.2, the network device may perform channel detection on the second BWP by using a second channel detection mechanism before sending the PDSCH, determine whether the second BWP is available, and send the PDSCH again if the second BWP is available.
Optionally, in some embodiments, the second channel detection mechanism may be contention window-based channel detection, and the channel detection on the second BWP is not performed before the PDCCH is transmitted, and the channel detection on the second BWP using Cat-4LBT may ensure that the second BWP is available before the PDSCH is transmitted, i.e., the PDSCH is allowed to be transmitted on the second BWP at this time.
Optionally, in other embodiments, the second channel detection mechanism may be single channel detection, and the channel detection is not performed on the second BWP before the PDCCH is transmitted, and the channel detection on the second BWP using Cat-2LBT may ensure that the second BWP is available before the PDSCH is transmitted, i.e., the PDSCH is allowed to be transmitted on the second BWP at this time.
As still another alternative embodiment of embodiment 1, which is denoted as embodiment 1.3, the network device may perform channel detection on the second BWP before sending the PDCCH, and not perform channel detection on the second BWP after sending the PDCCH and before sending the PDSCH, as shown in fig. 5.
Specifically, when the network device transmits a PDCCH to the terminal device on the first BWP and it is desired to schedule the terminal device to receive downlink data on the second BWP, in order to ensure availability of the channel, the network device may further perform channel detection on the second BWP before transmitting the PDCCH to ensure that the channel is available when the network device transmits data on the second BWP, and the network device may not perform channel detection on the second BWP after transmitting the PDCCH and before transmitting the PDSCH.
Optionally, as an optional embodiment of this embodiment 1.3, the network device may perform channel detection on the second frequency-domain resource by using a first channel detection mechanism before sending the PDCCH.
Optionally, in some embodiments, the first channel detection mechanism may be contention window based channel detection. Before sending PDCCH, the Cat-4LBT is used to perform channel detection on the second BWP, which may ensure that the second BWP is available, i.e. allow PDSCH to be sent on the second BWP at this time, and further, when sending PDSCH on the second BWP, the network device may send PDSCH on the second BWP directly without performing channel detection on the second BWP.
Alternatively, in other embodiments, the first channel detection mechanism may be a single channel detection. Before sending PDCCH, Cat-2LBT is used to perform channel detection on the second BWP for the second BWP, which may ensure that the second BWP is available, i.e. allow PDSCH to be sent on the second BWP at this time, and further, when sending PDSCH on the second BWP, the network device may send PDSCH on the second BWP directly without performing channel detection on the second BWP.
Example 2:
in embodiment 2, the third information is sent by the second device, the first device sends the first information on the first frequency domain resource, and the second device wants to be scheduled to send the third information on the second frequency domain resource, so that the second device needs to obtain the usage right of the second frequency domain resource for sending the third information, and the usage right of the second frequency domain resource can be determined as follows.
As an alternative embodiment of the embodiment 2, noted as embodiment 2.1, the network device may first determine whether the second BWP is available, and then send the PDCCH if the second BWP is available, and if the second BWP is not available, the network device may not send the PDCCH. Specifically, the network device may perform channel detection on the second BWP before transmitting the PDCCH to determine whether the second BWP is available.
Further, after transmitting the PDCCH, before the terminal device transmits the PUSCH, the terminal device may further determine whether a second BWP is available, and in case the second BWP is available, retransmit the PUSCH. Specifically, the terminal device may perform channel detection on the second BWP after receiving the PDCCH and before transmitting the PUSCH to determine whether the second BWP is available, as shown in fig. 6.
Therefore, when the network device wants to schedule the PUSCH on the second BWP through the PDCCH on the first BWP, the network device may perform channel detection on the second BWP before transmitting the PDCCH, which can ensure that the second BWP can be used for scheduling data.
Optionally, as an optional embodiment of the embodiment 2.1, the network device may first perform channel detection on the second BWP by using the first channel detection mechanism, determine whether to transmit a PDCCH for scheduling the PDSCH on the second BWP, if the second BWP is available, the network device may transmit the PDCCH, further, before the terminal device transmits a PUSCH, the terminal device may further perform channel detection on the second BWP by using the third channel detection mechanism, determine whether the second BWP is available, if the second BWP is available, retransmit the PUSCH, and if the second BWP is not available, the terminal device may not transmit the PUSCH.
Optionally, in some embodiments, the first channel detection mechanism may be contention window-based channel detection, the third channel detection mechanism may be contention window-based channel detection, the network device first performs channel detection on the second BWP by using Cat-4LBT to ensure that the second BWP is available, that is, to allow data to be scheduled on the second BWP at this time, and the terminal device further performs channel detection on the second BWP by using Cat-4LBT before sending PUSCH to ensure that the current channel is actually available.
Optionally, in other embodiments, the first channel detection mechanism may be contention window-based channel detection, the third channel detection mechanism may be single channel detection, the network device first performs channel detection on the second BWP using Cat-4LBT to ensure that the second BWP is available, that is, to allow data to be scheduled on the second BWP at this time, and the terminal device further performs channel detection on the second BWP using Cat-2LBT before sending PUSCH to ensure that the current channel is actually available.
Optionally, in still other embodiments, the first channel detection mechanism may be single channel detection, the third channel detection mechanism may be contention window-based channel detection, the network device first performs channel detection on the second BWP by using Cat-2LBT, may preliminarily listen to a channel on the second BWP, determine that the channel is available, and the terminal device further performs channel detection on the second BWP by using Cat-4LBT before sending PUSCH, which may ensure that the current channel is actually available.
Optionally, in still other embodiments, the first channel detection mechanism may be single channel detection, the third channel detection mechanism may be single channel detection, the network device performs channel detection on the second BWP by using Cat-2LBT, may preliminarily listen to a channel on the second BWP, determine that the channel is available, and the terminal device further performs channel detection by using Cat-2LBT before sending PUSCH, which may ensure that the current channel is indeed available.
It should be understood that, in the embodiment of the present application, the channel detection manners of the first channel detection mechanism and the third channel detection mechanism are merely examples, and the embodiment of the present application does not limit this.
As another alternative embodiment of embodiment 2, noted as embodiment 2.2, the network device may not perform channel detection on the second BWP before sending the PDCCH, and the terminal device may perform channel detection on the second BWP after receiving the PDCCH and before sending the PUSCH, and in case that it is determined that the second BWP is available, send the PUSCH again, as shown in fig. 7.
Therefore, when the network device wants to schedule the PUSCH on the second BWP through the PDCCH on the first BWP, the network device may not perform channel detection on the second BWP before transmitting the PDCCH, and the terminal device may perform channel detection on the second BWP after receiving the PDCCH and before transmitting the PUSCH, which is beneficial to ensure that the second BWP is available for transmitting the PUSCH.
Optionally, as an optional embodiment of this embodiment 2.2, the terminal device may perform channel detection on the second BWP by using a third channel detection mechanism before sending the PUSCH, determine whether the second BWP is available, send the PUSCH again if the second BWP is available, and if the second BWP is not available, the terminal device may not send the PUSCH.
Optionally, in some embodiments, the third channel detection mechanism may be contention window-based channel detection, the network device does not perform channel detection on the second BWP before transmitting the PDCCH, and the terminal device performs channel detection on the second BWP by using Cat-4LBT before transmitting the PUSCH, so as to ensure that the second BWP is available, i.e. allow the PUSCH to be transmitted on the second BWP at this time.
Optionally, in other embodiments, the third channel detection mechanism may be single channel detection, the network device does not perform channel detection on the second BWP before sending the PDCCH, and the terminal device performs channel detection on the second BWP by using Cat-2LBT before sending the PUSCH to ensure that the second BWP is available, that is, to allow the PUSCH to be sent on the second BWP at this time.
As still another alternative embodiment of the embodiment 2, which is denoted as embodiment 2.3, the network device may perform channel detection on the second BWP before sending the PDCCH, and the terminal device does not perform channel detection on the second BWP after receiving the PDCCH and before sending the PUSCH, as shown in fig. 8.
Specifically, when the network device transmits a PDCCH to the terminal device on a first BWP and the terminal device is expected to be scheduled to transmit uplink data on a second BWP, in order to ensure availability of a channel, the network device may further perform channel detection on the second BWP before transmitting the PDCCH to ensure that the channel is available when the network device transmits data on the second BWP, and the terminal device may not perform channel detection on the second BWP after the network device transmits the PDCCH and before the terminal device transmits the PUSCH.
Optionally, as an optional embodiment of this embodiment 2.3, the network device may perform channel detection on the second frequency-domain resource by using a first channel detection mechanism before sending the PDCCH.
Optionally, in some embodiments, the first channel detection mechanism may be contention window based channel detection. Before the network device sends the PDCCH, the Cat-4LBT is used to perform channel detection on the second BWP, which may ensure that the second BWP is available, that is, the PDSCH is allowed to be sent on the second BWP at this time.
Alternatively, in other embodiments, the first channel detection mechanism may be a single channel detection. Before sending the PDCCH, the network device performs channel detection on the second BWP by using Cat-2LBT on the second BWP, which may ensure that the second BWP is available, i.e. allow the PDSCH to be sent on the second BWP at this time.
To sum up, the first device may perform scheduling of downlink data, uplink data, or sidelink data across frequency domain resources, and perform at least one channel detection before the scheduled data is transmitted, so as to ensure that the frequency domain resources corresponding to the data are available, for example, the channel detection may be performed before the scheduling information (e.g., the first information) is transmitted, or the channel detection may be performed before the scheduled data (e.g., the second information or the third information) is transmitted, or the channel detection may be performed both before the scheduling information is transmitted and before the scheduled data is transmitted, and the specific channel detection method may be of various types, which is not limited in this embodiment.
The method of wireless communication according to an embodiment of the present application is described in detail above from the perspective of a first device in conjunction with fig. 2 to 8, and the method of wireless communication according to another embodiment of the present application is described in detail below from the perspective of a second device in conjunction with fig. 9. It should be understood that the description of the second device side corresponds to the description of the first device side, and similar descriptions may be referred to above, and are not repeated herein to avoid repetition.
Fig. 9 is a schematic flow chart of a method 300 of wireless communication according to another embodiment of the present application, where the method 300 may alternatively be performed by a terminal device in the communication system shown in fig. 1, and as shown in fig. 9, the method 300 includes the following:
s310, the second device receives first information on the first frequency domain resource, where the first information is used to instruct the second device to receive second information or send third information on the second frequency domain resource.
Optionally, in some embodiments, the method 300 further comprises:
the second device transmits the third information on the second frequency domain resource.
Optionally, in some embodiments, the second device sends the third information on the second frequency domain resource, including:
the second device determining whether the second frequency domain resources are available;
transmitting the third information on the second frequency domain resource if the second frequency domain resource is available.
Optionally, in some embodiments, the determining, by the second device, whether the second frequency domain resource is available includes:
the second device performs channel detection on the second frequency-domain resource to determine whether the second frequency-domain resource is available.
Optionally, in some embodiments, the channel detection on the second frequency-domain resource by the second device includes:
and the second equipment adopts a third channel detection mechanism to carry out channel detection on the second frequency domain resource.
Optionally, in some embodiments, the third channel detection mechanism is single channel detection or contention window based channel detection.
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the second information is at least one of the following:
the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the third information is at least one of the following:
a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
Optionally, in some embodiments, the first frequency-domain resource is a first bandwidth part BWP or a first carrier, and the second frequency-domain resource is a second BWP or a second carrier.
Optionally, in some embodiments, the first device is a network device, and the second device is a terminal device.
Optionally, in some embodiments, the first frequency domain resource and the second frequency domain resource are frequency domain resources on an unlicensed frequency band; or
The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
While method embodiments of the present application are described in detail above with reference to fig. 2-9, apparatus embodiments of the present application are described in detail below with reference to fig. 10-14, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.
Fig. 10 shows a schematic block diagram of a device 400 for wireless communication according to an embodiment of the application. As shown in fig. 10, the apparatus 400 includes:
a communication module 410 configured to transmit first information on the first frequency domain resource, the first information being used to instruct the second device to receive the second information or to transmit the third information on the second frequency domain resource.
Optionally, in some embodiments, the apparatus 400 further comprises:
a determining module for determining whether the second frequency domain resource is available;
the communication module is specifically configured to: transmitting the first information on the first frequency domain resource if the second frequency domain resource is available.
Optionally, in some embodiments, the determining module is specifically configured to
Performing channel detection on the second frequency domain resource to determine whether the second frequency domain resource is available.
Optionally, in some embodiments, the communication module 410 is further configured to:
and performing channel detection on the second frequency domain resource by adopting a first channel detection mechanism.
Optionally, in some embodiments, the first channel detection mechanism is single channel detection or contention window based channel detection.
Optionally, in some embodiments, the communication module 410 is further configured to: transmitting the second information on the second frequency domain resource.
Optionally, in some embodiments, the apparatus 400 further comprises:
a determining module for determining whether the second frequency domain resource is available;
the communication module is specifically configured to: transmitting the second information on the second frequency domain resource if the second frequency domain resource is available.
Optionally, in some embodiments, the communication module 410 is further configured to:
and performing channel detection on the second frequency domain resource, and determining whether the second frequency domain resource is available.
Optionally, in some embodiments, the communication module 410 is further configured to:
and performing channel detection on the second frequency domain resource by adopting a second channel detection mechanism.
Optionally, in some embodiments, the second channel detection mechanism is single channel detection or contention window based channel detection.
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the second information is at least one of the following:
the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the third information is at least one of the following:
a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
Optionally, in some embodiments, the first frequency-domain resource is a first bandwidth part BWP or a first carrier, and the second frequency-domain resource is a second BWP or a second carrier.
Optionally, in some embodiments, the device 400 is a network device, and the second device is a terminal device.
Optionally, in some embodiments, the first frequency domain resource and the second frequency domain resource are frequency domain resources on an unlicensed frequency band; or
The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
It should be understood that the apparatus 400 according to the embodiment of the present application may correspond to the first apparatus in the embodiment of the method of the present application, and the above and other operations and/or functions of the units in the apparatus 400 are respectively for implementing the corresponding flows of the first apparatus in the method 200 shown in fig. 2, and are not described herein again for brevity.
Fig. 11 is a schematic block diagram of a device for wireless communication according to an embodiment of the application. The apparatus 500 of fig. 11 comprises:
a communication module 510 configured to receive first information on a first frequency domain resource, the first information being used to instruct the apparatus to receive second information or to transmit third information on a second frequency domain resource.
Optionally, in some embodiments, the method 500 further comprises: the communication module is further configured to:
transmitting the third information on the second frequency domain resource.
Optionally, in some embodiments, the apparatus 500 further comprises:
a determining module for determining whether the second frequency domain resource is available;
the communication module is specifically configured to: transmitting the third information on the second frequency domain resource if the second frequency domain resource is available.
Optionally, in some embodiments, the determining module is specifically configured to: performing channel detection on the second frequency domain resource to determine whether the second frequency domain resource is available.
Optionally, in some embodiments, the communication module 510 is further configured to:
and performing channel detection on the second frequency domain resource by adopting a third channel detection mechanism.
Optionally, in some embodiments, the third channel detection mechanism is single channel detection or contention window based channel detection.
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the second information is at least one of the following:
the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
Optionally, in some embodiments, the first information is a physical downlink control channel PDCCH, or downlink control information DCI in the PDCCH;
the third information is at least one of the following:
a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
Optionally, in some embodiments, the first frequency-domain resource is a first bandwidth part BWP or a first carrier, and the second frequency-domain resource is a second BWP or a second carrier.
Optionally, in some embodiments, the first device is a network device, and the device 500 is a terminal device.
Optionally, in some embodiments, the first frequency domain resource and the second frequency domain resource are frequency domain resources on an unlicensed frequency band; or
The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
It should be understood that the apparatus 500 according to the embodiment of the present application may correspond to a second apparatus in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the apparatus 500 are respectively for implementing corresponding processes of the second apparatus in the method 300 shown in fig. 9, and are not described herein again for brevity.
Fig. 12 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 12 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 12, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.
The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.
Optionally, as shown in fig. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.
The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.
Optionally, the communication device 600 may specifically be a first device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the first device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the communication device 600 may specifically be a second device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the second device in each method in the embodiment of the present application, which is not described herein again for brevity.
Fig. 13 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 13 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 13, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.
Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to the first device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the first device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the chip may be applied to the second device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the second device in each method in the embodiment of the present application, and for brevity, details are not described here again.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
Fig. 14 is a schematic block diagram of a communication system 900 according to an embodiment of the present application. As shown in fig. 14, the communication system 900 includes a first device 910 and a second device 920.
The first device 910 may be configured to implement the corresponding function implemented by the first device in the foregoing method, and the second device 920 may be configured to implement the corresponding function implemented by the second device in the foregoing method, for brevity, which is not described herein again.
It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile 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. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing the computer program.
Optionally, the computer-readable storage medium may be applied to the first device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the first device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the computer-readable storage medium may be applied to the second device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the second device in each method in the embodiment of the present application, which is not described herein again for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to the first device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding process implemented by the first device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the computer program product may be applied to the second device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second device in the methods in the embodiment of the present application, which are not described herein again for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to the first device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute a corresponding process implemented by the first device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the computer program may be applied to the second device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the second device in each method in the embodiment of the present application, and for brevity, details are not described here again.
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 application.
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 several embodiments provided in the present application, it should be understood that the disclosed system, 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 application 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 application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including 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 application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (57)

  1. A method of wireless communication, comprising: the first device sends first information on the first frequency domain resource, wherein the first information is used for indicating the second device to receive second information or send third information on the second frequency domain resource.
  2. The method of claim 1, wherein the first device transmitting first information on a first frequency domain resource comprises:
    the first device determining whether the second frequency domain resources are available;
    the first device transmits the first information on the first frequency domain resource if the second frequency domain resource is available.
  3. The method of claim 2, wherein the first device determining whether the second frequency domain resource is available comprises:
    the first device performs channel detection on the second frequency-domain resource to determine whether the second frequency-domain resource is available.
  4. The method of claim 3, wherein the channel detection of the second frequency-domain resource by the first device comprises:
    and the first equipment adopts a first channel detection mechanism to carry out channel detection on the second frequency domain resource.
  5. The method of claim 4, wherein the first channel detection mechanism is a single channel detection or a contention window based channel detection.
  6. The method according to any one of claims 1 to 5, further comprising:
    the first device transmits the second information on the second frequency domain resource.
  7. The method of claim 6, wherein the first device transmits the second information on the second frequency domain resource, comprising:
    the first device determining whether the second frequency domain resources are available;
    the first device transmits the second information on the second frequency domain resource if the second frequency domain resource is available.
  8. The method of claim 7, wherein the first device determining whether the second frequency domain resource is available comprises: and the first equipment performs channel detection on the second frequency domain resource and determines whether the second frequency domain resource is available.
  9. The method of claim 8, wherein the channel detection of the second frequency-domain resource by the first device comprises: and the first equipment adopts a second channel detection mechanism to carry out channel detection on the second frequency domain resource.
  10. The method of claim 9, wherein the second channel detection mechanism is single channel detection or contention window based channel detection.
  11. The method according to any one of claims 1 to 10, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH;
    the second information is at least one of the following:
    the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), part or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
  12. The method according to any one of claims 1 to 11, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH;
    the third information is at least one of the following:
    a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
  13. The method according to any of claims 1 to 12, wherein the first frequency-domain resource is a first bandwidth part, BWP, or a first carrier and the second frequency-domain resource is a second BWP or a second carrier.
  14. The method according to any one of claims 1 to 13, wherein the first device is a network device and the second device is a terminal device.
  15. The method according to any of claims 1 to 14, wherein the first frequency domain resources and the second frequency domain resources are frequency domain resources on an unlicensed frequency band; or
    The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
  16. A method of wireless communication, comprising:
    the second device receives first information on the first frequency domain resource, wherein the first information is used for indicating the second device to receive second information or send third information on the second frequency domain resource.
  17. The method of claim 16, further comprising:
    the second device transmits the third information on the second frequency domain resource.
  18. The method of claim 17, wherein the second device transmits the third information on the second frequency domain resource, comprising:
    the second device determining whether the second frequency domain resources are available;
    transmitting the third information on the second frequency domain resource if the second frequency domain resource is available.
  19. The method of claim 18, wherein the second device determining whether the second frequency domain resource is available comprises: the second device performs channel detection on the second frequency-domain resource to determine whether the second frequency-domain resource is available.
  20. The method of claim 19, wherein the second device performs channel detection on the second frequency-domain resource, and wherein the channel detection comprises: and the second equipment adopts a third channel detection mechanism to carry out channel detection on the second frequency domain resource.
  21. The method of claim 20, wherein the third channel detection mechanism is single channel detection or contention window based channel detection.
  22. The method according to any one of claims 16 to 21, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH; the second information is at least one of the following:
    the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
  23. The method according to any one of claims 16 to 22, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH; the third information is at least one of the following:
    a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
  24. The method according to any of claims 16 to 23, wherein the first frequency-domain resource is a first bandwidth part, BWP, or a first carrier and the second frequency-domain resource is a second BWP or a second carrier.
  25. The method according to any of claims 16 to 24, wherein the first device is a network device and the second device is a terminal device.
  26. The method according to any of claims 16 to 25, wherein the first frequency domain resources and the second frequency domain resources are frequency domain resources on an unlicensed frequency band; or
    The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
  27. An apparatus for wireless communication, comprising:
    a communication module, configured to send first information on a first frequency domain resource, where the first information is used to instruct a second device to receive second information or send third information on a second frequency domain resource.
  28. The apparatus of claim 27, further comprising:
    a determining module for determining whether the second frequency domain resource is available;
    the communication module is specifically configured to: transmitting the first information on the first frequency domain resource if the second frequency domain resource is available.
  29. The apparatus of claim 28, wherein the means for determining is configured to perform channel detection on the second frequency domain resources to determine whether the second frequency domain resources are available.
  30. The device of claim 29, wherein the communication module is further configured to:
    and performing channel detection on the second frequency domain resource by adopting a first channel detection mechanism.
  31. The apparatus of claim 30, wherein the first channel detection mechanism is a single channel detection or a contention window based channel detection.
  32. The device of any of claims 27-31, wherein the communication module is further configured to: transmitting the second information on the second frequency domain resource.
  33. The apparatus of claim 32, further comprising:
    a determining module for determining whether the second frequency domain resource is available;
    the communication module is specifically configured to: transmitting the second information on the second frequency domain resource if the second frequency domain resource is available.
  34. The device of claim 33, wherein the communication module is further configured to:
    and performing channel detection on the second frequency domain resource, and determining whether the second frequency domain resource is available.
  35. The device of claim 34, wherein the communication module is further configured to:
    and performing channel detection on the second frequency domain resource by adopting a second channel detection mechanism.
  36. The apparatus of claim 35, wherein the second channel detection mechanism is single channel detection or contention window based channel detection.
  37. The apparatus according to any one of claims 27 to 36, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH;
    the second information is at least one of the following:
    the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
  38. The apparatus according to any one of claims 27 to 37, wherein the first information is a physical downlink control channel, PDCCH, or downlink control information, DCI, in the PDCCH;
    the third information is at least one of the following:
    a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
  39. The apparatus according to any of claims 27 to 38, wherein the first frequency-domain resource is a first bandwidth part, BWP, or a first carrier and the second frequency-domain resource is a second BWP or a second carrier.
  40. The device according to any of claims 27 to 39, wherein the device is a network device and the second device is a terminal device.
  41. The apparatus of any one of claims 27 to 40, wherein the first frequency domain resources and the second frequency domain resources are frequency domain resources on an unlicensed frequency band; or
    The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
  42. An apparatus for wireless communication, comprising:
    a communication module configured to receive first information on a first frequency domain resource, where the first information is used to instruct the device to receive second information or send third information on a second frequency domain resource.
  43. The apparatus of claim 42, wherein the method further comprises: the communication module is further configured to:
    transmitting the third information on the second frequency domain resource.
  44. The apparatus of claim 43, further comprising:
    a determining module for determining whether the second frequency domain resource is available;
    the communication module is specifically configured to: transmitting the third information on the second frequency domain resource if the second frequency domain resource is available.
  45. The device of claim 44, wherein the determination module is specifically configured to: performing channel detection on the second frequency domain resource to determine whether the second frequency domain resource is available.
  46. The device of claim 45, wherein the communication module is further configured to:
    and performing channel detection on the second frequency domain resource by adopting a third channel detection mechanism.
  47. The apparatus of claim 46, wherein the third channel detection mechanism is a single channel detection or a contention window based channel detection.
  48. The apparatus according to any of claims 42-47, wherein the first information is a Physical Downlink Control Channel (PDCCH), or a Downlink Control Information (DCI) in the PDCCH; the second information is at least one of the following:
    the method comprises the steps of a Physical Downlink Shared Channel (PDSCH), a channel state information reference signal (CSI-RS), partial or all signals in a Synchronous Signal Block (SSB), a demodulation reference signal (DMRS), a Positioning Reference Signal (PRS) and a Tracking Reference Signal (TRS).
  49. The apparatus according to any of claims 42-48, wherein the first information is a Physical Downlink Control Channel (PDCCH), or a Downlink Control Information (DCI) in the PDCCH; the third information is at least one of the following:
    a physical uplink shared channel PUSCH, a sounding reference signal SRS and a phase tracking reference signal PT-RS.
  50. The apparatus according to any of claims 42-49, wherein the first frequency-domain resource is a first bandwidth part, BWP, or a first carrier, and wherein the second frequency-domain resource is a second BWP, or a second carrier.
  51. The device according to any of claims 42 to 50, wherein the first device is a network device and the device is a terminal device.
  52. The apparatus of any one of claims 42 to 51, wherein the first frequency domain resources and the second frequency domain resources are frequency domain resources on an unlicensed frequency band; or
    The first frequency domain resource is a frequency domain resource on an authorized frequency band, and the second frequency domain resource is a frequency domain resource on an unauthorized frequency band.
  53. An apparatus for wireless communication, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory, to perform the method of any of claims 1 to 15, or to perform the method of any of claims 16 to 26.
  54. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any of claims 1 to 15, or the method of any of claims 16 to 26.
  55. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 15 or the method of any one of claims 16 to 26.
  56. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 15 or the method of any one of claims 16 to 26.
  57. A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 1 to 15, or the method of any of claims 16 to 26.
CN201980087248.7A 2019-04-09 2019-04-09 Method and apparatus for wireless communication Active CN113273274B (en)

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