CN110740519B - Method and device in wireless transmission - Google Patents
Method and device in wireless transmission Download PDFInfo
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- CN110740519B CN110740519B CN201911149910.5A CN201911149910A CN110740519B CN 110740519 B CN110740519 B CN 110740519B CN 201911149910 A CN201911149910 A CN 201911149910A CN 110740519 B CN110740519 B CN 110740519B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Abstract
The invention discloses a method and a device in wireless transmission. The UE receives first signaling, and the first signaling is used for determining first time-frequency resources; a first wireless signal is then received on the first time frequency resource or transmitted on the first time frequency resource. The first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in a time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. According to the invention, the scheduling granularity of the first time-frequency resource on the frequency domain is linked with the duration of the target time interval, the design mode of the first signaling and the scheduling mode of the first wireless signal are optimized, the overhead of the control signaling is reduced, the complexity of the size design of a transmission block brought by low-delay transmission is reduced, and the overall system performance and the spectrum efficiency are further improved.
Description
The application is a divisional application of the following original applications:
application date of the original application: 2016 (8 months and 5 days)
- -application number of the original application: 201610635146.2
The invention of the original application is named: method and device in wireless transmission
Technical Field
The present application relates to transmission schemes for wireless signals in wireless communication systems, and more particularly, to methods and apparatus in users and base stations that support low-latency communication.
Background
In the existing LTE (Long-Term Evolution) and LTE-a (Long Term Evolution Advanced, enhanced Long Term Evolution) systems, a TTI (Transmission Time Interval), a Subframe (Subframe), or a PRB (Physical Resource Block) (Pair) corresponds to one ms (milli-second, millisecond) in Time. An LTE subframe includes two Time slots (Time slots), which are a first Time Slot and a second Time Slot, respectively, and the first Time Slot and the second Time Slot occupy the first half millisecond and the second half millisecond of the LTE subframe, respectively.
An important application of the Latency Reduction (LR) topic in 3GPP (3 rd Generation Partner Project) Release 14 is low Latency communication. For the requirement of reducing the delay, the conventional LTE frame structure needs to be redesigned, and correspondingly, a new scheduling method needs to be considered.
Disclosure of Invention
In the Study Item (Study topic) of Release 14 to reduce delay correlation, one direction to be studied is the design of transmission mode and scheduling Granularity (Granularity) of downlink scheduling and uplink scheduling. In the LTE system, the scheduling granularity of uplink and downlink scheduling in the Physical layer is one PRB (Physical Resource Block, physical Resource Block pair), that is, the minimum scheduling unit is one PRB pair, and different RBGs (Resource Block Size) sizes are defined for different system bandwidths, so as to be further applied to different Resource Allocation modes (Resource Allocation types). Currently, in the LR topic of Release 14, a base station and a UE can support different sTTI (Short Transmission Time Interval). The problem is that the system needs to design new different TBSs (Transmission Block Size) to support different durations corresponding to different sttis for different sttis.
An intuitive solution is to introduce new TBSs respectively according to the durations of different sTTI and the size of the existing TBSs, and use the Information Field (Information Field) about the RA (Resource Allocation) in the current DCI (Downlink Control Information). However, such design approach obviously brings great implementation complexity to the UE, and the standardization work is heavy. Meanwhile, if the current Two-level (Two-level) DCI design is considered, this method will increase the overhead of control signaling and the complexity of blind detection.
The present application provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the UE of the present application may be applied in a base station and vice versa.
The application discloses a method used in UE of low-delay communication, wherein, comprising the following steps:
-step a. Receiving first signalling, the first signalling being used to determine first time-frequency resources;
-step b. Receiving a first wireless signal on the first time frequency resource or transmitting a first wireless signal on the first time frequency resource.
Wherein the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in the time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval has a duration of no more than 1ms.
The method of the present disclosure relates to associating scheduling granularity of the first time-frequency resource in the frequency domain with a duration of the target time interval, thereby simplifying a complexity of a new TBS design due to introduction of low latency communication. Based on the fact that the TBS of the existing LTE system is used as far as possible, the scheduling of low-delay communication is achieved.
As one embodiment, the first signaling is used to schedule the first wireless signal.
As an embodiment, the duration of the target time interval corresponds to the time length of one TTI or the time length of one sTTI.
As an embodiment, the target time interval occupies a positive integer number of multicarrier symbols in the time domain.
As an embodiment, the number of multicarrier symbols occupied by the target time interval in the time domain is equal to one of {2,4,7, 14 }.
As an example, the multicarrier symbol described herein is one of { an OFDM (Orthogonal Frequency Division Multiplexing) symbol including a CP (Cyclic Prefix), a DFT-s-OFDM (Discrete Fourier Transform spread OFDM, orthogonal Frequency Division Multiplexing) symbol including a CP, an SC-FDMA (Single-Carrier Frequency Division Multiplexing Access, single Carrier Frequency Division Multiplexing Access) symbol, and an FBMC (Filter Bank multicarrier ) symbol }.
As one embodiment, the first wireless signal occupies all RUs in the first time-frequency resource.
As one embodiment, the first wireless signal occupies a portion of RUs (Resource units) in the first time-frequency Resource.
As a sub-embodiment of this embodiment, the first wireless signal is mapped into the first time-frequency resource by a Rate Matching method (Rate Matching), and an RU occupied by the first wireless signal and an RU occupied by a legacy signal in the first time-frequency resource are orthogonal.
As an additional embodiment of the sub-embodiment, the legacy Signal includes at least one of { CRS (Cell Reference Signal), PBCH (Physical Broadcast Channel), PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal) }.
For one embodiment, the first time-frequency resource includes a positive integer number of RUs.
As one embodiment, the first time-frequency resource is discrete in a frequency domain.
As an embodiment, the first time-frequency resource is contiguous in the frequency domain.
As an example, an RU herein occupies one multicarrier symbol in the time domain and one subcarrier in the frequency domain.
As an embodiment, an RU described herein is an RE (Resource Element) in LTE.
As an embodiment, the UE receives a first radio signal on the first time-frequency resource in step B, where the first signaling corresponds to a DCI of a Downlink Grant (Downlink Grant), and a Physical layer Channel corresponding to the first radio signal is a PDSCH (Physical Downlink Shared Channel) or an sPDSCH (Short Latency Physical Downlink Shared Channel).
As an embodiment, in step B, the UE transmits a first wireless signal on the first time frequency resource, where the first signaling corresponds to a DCI of an Uplink Grant (Uplink Grant), and a Physical layer Channel corresponding to the first wireless signal is a PUSCH (Physical Uplink Shared Channel) or a Short Latency Physical Uplink Shared Channel (Short Physical Uplink Shared Channel).
As an embodiment, the Physical layer Channel corresponding to the first signaling is a PDCCH (Physical Downlink Control Channel) or an sPDCCH (Short Latency Physical Downlink Control Channel).
As an embodiment, the transmission Channel corresponding to the first wireless signal is a DL-SCH (Downlink Shared Channel).
As an embodiment, the transmission Channel corresponding to the first wireless signal is an UL-SCH (Uplink Shared Channel).
As an embodiment, the scheduling granularity of the first time-frequency resource in the frequency domain refers to: a minimum frequency domain scheduling unit supported by the first time frequency resource when scheduled.
As a sub-embodiment of this embodiment, the minimum frequency-domain scheduling unit corresponds to frequency-domain resources occupied by F PRBs, where F is a positive integer.
As an additional embodiment of this sub-embodiment, the F PRBs are contiguous in the frequency domain.
As a subsidiary embodiment of this sub-embodiment, the F PRBs are discrete in the frequency domain.
As a sub-embodiment of this embodiment, the scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval by: the F decreases as the length of time of the target time interval increases, and the F increases as the length of time of the target time interval decreases.
As an auxiliary embodiment of the sub-embodiment, the duration of the target time interval corresponds to the number F1 of multicarrier symbols occupied by the target time interval in the time domain. The product of F and F1 is equal to a fixed positive integer. And F1 is a positive integer.
As an auxiliary embodiment of the sub-embodiment, the duration of the target time interval corresponds to the number F1 of multicarrier symbols occupied by the target time interval in the time domain. If said F1 equals 14, said F equals 1; if said F1 equals 7, said F equals 2; if the F1 is equal to 4, the F is equal to one of {3,4 }; if the F1 is equal to 2, the F is equal to one of {6,7 }. And F1 is a positive integer.
According to one aspect of the application, the above method is characterized in that said step a further comprises the steps of:
-step a0. Receiving second signaling, the second signaling being used for determining the target time interval.
Wherein the second signaling is physical layer signaling.
As an embodiment, the method is characterized in that the UE needs to decode two DCIs for the first wireless signal, and the two DCIs are for the first signaling and the second signaling respectively.
A benefit of the above embodiments is that the design of the two DCIs can be optimized to reduce the complexity of achieving low delay transmission.
As an embodiment, the second signaling is DCI.
As an embodiment, the physical layer channel corresponding to the second signaling is a PDCCH.
As an embodiment, the physical layer channel corresponding to the second signaling is sPDCCH.
As an embodiment, the second signaling is Cell-Specific physical layer signaling.
As an embodiment, the second signaling is UE-Specific physical layer signaling.
As an embodiment, the second signaling is UE group specific, the UE group including one or more UEs.
As a sub-embodiment of this embodiment, the above embodiment has the benefits of: UEs supporting different sTTI durations share the second signaling to reduce control signaling overhead.
As a sub-embodiment of this embodiment, a CRC (Cyclic Redundancy Check) of the second signaling is scrambled by a Radio Network Temporary Identity (RNTI) specific to the UE group.
As an embodiment, the CRC of the second signaling is scrambled by a C-RNTI (Cell Radio Network temporary Identity).
As an embodiment, the second signaling is identified by a default (i.e. not requiring explicit configuration) RNTI.
As a sub-embodiment of this embodiment, the default RNTI is cell common.
As a sub-embodiment of this embodiment, the CRC of the second signaling is scrambled by the default RNTI.
As a sub-embodiment of this embodiment, the default RNTI is used to determine the time-frequency resources occupied by the first signaling.
As a sub-embodiment of this embodiment, the default RNTI is used to generate the demodulation reference signal corresponding to the first signaling.
As a sub-embodiment of this embodiment, the default RNTI is related to the duration of the target time interval.
As an embodiment, the second signaling used for determining the target time interval refers to: the second signaling is used to determine at least one of { a duration of the target time interval, a time domain location of the target time interval in a given subframe }. The given subframe is a subframe in which the target time interval is located in a time domain.
According to one aspect of the present application, the above method is characterized in that the step a further comprises the steps of:
-step a10. Receiving third signaling, said third signaling being used for determining L time-frequency resource pools.
Wherein, the duration of the time interval occupied by the wireless signals on the L time frequency resource pools is respectively L durations. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. And L is a positive integer.
The above method is characterized in that: and aiming at the duration time of different time intervals, the base station configures different time frequency resource pools for scheduling the first wireless signal.
As an embodiment, the duration of the time interval occupied by the radio signals on the L time-frequency resource pools is L durations, respectively, where: a given wireless signal is transmitted in a given pool of time-frequency resources and occupies a given time interval. The duration of the given time interval is one of the L durations. The given time-frequency resource pool is one of the L time-frequency resource pools.
As an embodiment, the third signaling is higher layer signaling.
For one embodiment, the pool of time-frequency resources includes a positive integer number of RUs.
As an embodiment, the time lengths corresponding to any two of the L durations are different.
As an example, L is equal to 2, and the L durations correspond to { duration of 2 multicarrier symbols, duration of 7 multicarrier symbols }, respectively.
As an example, L is equal to 3, and the L durations correspond to {2 multicarrier symbol duration, 4 multicarrier symbol duration, and 7 multicarrier symbol duration }, respectively.
According to an aspect of the application, the above method is characterized in that the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
implicitly indicating the first time-frequency resource from the target time-frequency resource pool;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
As an embodiment, the explicit indication of the first time-frequency resource from the target time-frequency resource pool refers to: the first signaling contains a positive integer number of information bits, which are used to indicate at least the latter of { a given time domain resource location, a given frequency domain resource location }. The given time domain resource location is a time domain location of the first time-frequency resource in the target time-frequency resource pool, and the given frequency domain resource location is a frequency domain location of the first time-frequency resource in the target time-frequency resource pool.
As an embodiment, the explicitly indicating the target time-frequency resource pool from the L time-frequency resource pools means: the first signaling contains P information bits, the P information bits are located at fixed positions of the first signaling, and the P information bits are used for indicating a target time frequency resource pool in the L time frequency resource pools.
As a sub-embodiment of this embodiment, P is less than (log) 2 L + 1) is the largest positive integer.
As an embodiment, the implicitly indicating the first time-frequency resource from the target time-frequency resource pool refers to: and the UE determines the time domain position and the frequency domain position of the first time-frequency resource by determining the time domain position and the frequency domain position of the target time-frequency resource pool.
As a sub-embodiment of this embodiment, the time domain position of the target time-frequency resource pool and the time domain position of the first time-frequency resource are the same.
As a sub-embodiment of this embodiment, the frequency domain position of the first time-frequency resource in the target time-frequency resource pool is fixed.
As a sub-embodiment of this embodiment, the frequency domain location of the first time-frequency resource in the target pool of time-frequency resources is predefined.
As an additional embodiment of this sub-embodiment, the predefined means: and the frequency domain position of the first time frequency resource in the target time frequency resource pool is related to the C-RNTI configured to the UE.
As an embodiment, the implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools means: the first signaling contains R information bits in total, and the R and the index of the target time frequency resource pool in the L time frequency resource pools are related.
The benefits of the above embodiment are: and the overhead of system control signaling is reduced.
As a sub-embodiment of this embodiment, the first signaling explicitly indicates the first time-frequency resource from the target time-frequency resource pool.
As a sub-embodiment of this embodiment, in a given scheduling state, the value of R and the index of the target time-frequency resource pool in the L time-frequency resource pools are in one-to-one correspondence. The given scheduling State includes at least one of { a given system bandwidth, a given Transmission Mode (Transmission Mode), a given multi-antenna Transmission scheme (Transmission diversity or beamforming), a given number of currently configured serving cells, a given Duplexing scheme (FDD (Frequency Division Duplexing) or TDD (Time Division Duplexing)), a given number of bits of a Sounding Reference Signal (SRS) request Field, a given number of bits of a Channel State Information (CSI) request Field, a given number of bits of a Carrier Indicator Field (CIF) Field, and a given number of bits of a Hybrid Automatic Repeat request Resource Offset (ARO) Field }.
As a sub-embodiment of this embodiment, said L is equal to 2.
As an auxiliary embodiment of the sub-embodiment, the respective corresponding time lengths of the L time-frequency resource pools are {2 multicarrier symbols, 7 multicarrier symbols }.
As an additional embodiment of this sub-embodiment, if R is equal to R1, the target time-frequency resource pool is a first time-frequency resource pool; and if the R is equal to the R2, the target time frequency resource pool is a second time frequency resource pool.
As an auxiliary embodiment of the sub-embodiment, the R1 is smaller than the R2, and the corresponding time length of the first time-frequency resource pool is smaller than the corresponding time length of the second time-frequency resource pool.
As a sub-embodiment of this embodiment, said L is equal to 3.
As an auxiliary embodiment of the sub-embodiment, the time lengths corresponding to the L time-frequency resource pools are {2 multicarrier symbols, 4 multicarrier symbols, and 7 multicarrier symbols }.
As an auxiliary embodiment of this sub-embodiment, the R is one of { R3, R4, R5}, and the target time-frequency resource pool is one of { a third time-frequency resource pool, a fourth time-frequency resource pool, and a fifth time-frequency resource pool }, respectively.
As a sub-embodiment of this sub-embodiment, said R3 is less than said R4, said R4 is less than said R5; and the time length corresponding to the third time frequency resource pool is shorter than the time length corresponding to the fourth time frequency resource pool, and the time length corresponding to the fourth time frequency resource pool is shorter than the time length corresponding to the fifth time frequency resource pool.
According to an aspect of the application, the above method is characterized in that the scheduling granularity of the first time-frequency resource in the frequency domain decreases with increasing duration of the target time interval.
As an embodiment, the first time-frequency resource includes K first sub time-frequency resources, a frequency domain resource occupied by the first sub time-frequency resource is equal to a scheduling granularity of the first time-frequency resource in a frequency domain, and a time domain resource occupied by the first sub time-frequency resource is less than or equal to a duration of the target time interval. Under the condition that other configurations are the same, the number of RUs occupied by the first sub time-frequency resource is independent of the duration of the target time interval.
As a sub-embodiment of this embodiment, the other configurations include { subcarrier spacing, CP length }.
As an embodiment, the scheduling granularity of the first time-frequency resource in the frequency domain increases with decreasing duration of the target time interval.
According to one aspect of the application, the above method is characterized in that a first block of bits is used for generating the first radio signal. The time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
As an embodiment, the first bit block is a transport block.
As one embodiment, the first bit block includes 2 transport blocks, and the two transport blocks are spatially multiplexed.
As an embodiment, the first bit block being used to generate the first wireless signal means: the first radio signal is an output of the first bit block after sequentially performing Channel Coding (Channel Coding), modulation Mapper (Modulation Mapper), layer Mapper (Layer Mapper), precoding (Precoding), resource Element Mapper (Resource Element Mapper), and OFDM signal Generation (Generation).
As an embodiment, during the transmission time corresponding to the first bit block, the transmission channel corresponding to the first bit block is used for transmitting the first bit block and is not used for transmitting the transmission blocks except the first bit block.
As an embodiment, the transmission time corresponding to the first bit block is a TTI or sTTI corresponding to the first bit block.
As an embodiment, the first length of time is equal to a duration of the target time interval.
As an embodiment, the first time length corresponds to a duration of the target time interval.
According to an aspect of the present application, the above method is characterized in that the first signaling contains first information, the first information contains M information bits, the M information bits are used for indicating frequency domain positions of the first time-frequency resources, and the M is related to the duration of the target time interval. And M is a positive integer.
As an embodiment, the above method is characterized in that: and establishing a relation between the information bit number contained in the first information and the duration of the target time interval. When the duration of the target time interval is less than 1ms, the length of the first information is shorter than that of an information field for the same function in the existing system, thereby reducing the overhead of control signaling.
As an example, the above method has the benefits of: if the Payload (Payload) of the first signaling remains unchanged, the saved bits can be used for indication of other information.
As an example, the above method has the benefits of: if the load of the first signaling is reduced due to the reduction of the number of bits of the first information, the blind detection complexity of the first signaling will be reduced, and the overhead of the control signaling corresponding to the first signaling will also be reduced.
As one example, the reciprocal of M (1/M) is linear with the duration of the target time interval.
As one embodiment, the M decreases as the duration of the target time interval increases.
As an embodiment, the M increases with decreasing duration of the target time interval.
As an embodiment, the first signaling is further used to determine one or more of { MCS (Modulation and Coding Status), NDI, RV (Redundancy Version), HARQ process number } of the first wireless signal.
The application discloses a method used in a base station of low delay communication, which comprises the following steps:
-step a. Transmitting first signalling, said first signalling being used to determine first time-frequency resources;
-step b. Transmitting a first wireless signal on the first time frequency resource or receiving a first wireless signal on the first time frequency resource.
Wherein the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in the time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval is no more than 1ms in duration.
As an embodiment, in step B, the base station sends a first wireless signal on the first time-frequency resource, where the first signaling corresponds to DCI of a downlink grant, and a physical layer channel corresponding to the first wireless signal is a PDSCH or an sPDSCH.
As an embodiment, the base station receives a first wireless signal on the first time-frequency resource in step B, where the first signaling corresponds to DCI of an uplink grant, and a physical layer channel corresponding to the first wireless signal is PUSCH or sPUSCH.
According to one aspect of the present application, the above method is characterized in that the step a further comprises the steps of:
-step a0. Sending second signaling, said second signaling being used for determining said target time interval.
Wherein the second signaling is physical layer signaling.
According to one aspect of the present application, the above method is characterized in that the step a further comprises the steps of:
a step a10. Sending third signaling, said third signaling being used for determining L time-frequency resource pools.
Wherein, the duration of the time interval occupied by the wireless signals on the L time frequency resource pools is respectively L durations. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. And L is a positive integer.
According to one aspect of the application, the above method is characterized in that the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
implicitly indicating the first time-frequency resource from the target time-frequency resource pool;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
According to an aspect of the application, the above method is characterized in that the scheduling granularity of the first time-frequency resource in the frequency domain decreases with increasing duration of the target time interval.
According to one aspect of the application, the above method is characterized in that a first block of bits is used for generating the first radio signal. The time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
According to an aspect of the application, the method is characterized in that the first signaling contains first information, the first information contains M information bits, the M information bits are used for indicating frequency domain positions of the first time-frequency resources, and the M is related to the duration of the target time interval. The M is a positive integer.
The application discloses a user equipment used for low-delay communication, which comprises the following modules:
-a first receiving module: for receiving first signaling, the first signaling being used to determine a first time-frequency resource;
-a first processing module: for receiving a first wireless signal on the first time-frequency resource or for transmitting a first wireless signal on the first time-frequency resource.
Wherein the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in a time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval is no more than 1ms in duration.
As an embodiment, the first receiving module is further configured to receive a second signaling, where the second signaling is used to determine the target time interval. The second signaling is physical layer signaling.
As an embodiment, the first receiving module is further configured to receive a third signaling, and the third signaling is used to determine L time-frequency resource pools. The time intervals occupied by the wireless signals on the L time frequency resource pools respectively have L durations. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. And L is a positive integer.
According to an aspect of the application, the above user equipment is characterized in that the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
implicitly indicating the first time-frequency resource from the target time-frequency resource pool;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
According to an aspect of the present application, the above user equipment is characterized in that the scheduling granularity of the first time-frequency resource in the frequency domain decreases as the duration of the target time interval increases.
According to an aspect of the application, the above user equipment is characterized in that a first block of bits is used for generating the first radio signal. The time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
According to an aspect of the present application, the above user equipment is characterized in that the first signaling contains first information, the first information contains M information bits, the M information bits are used for indicating frequency domain positions of the first time-frequency resources, and the M is related to the duration of the target time interval. And M is a positive integer.
The application discloses a base station device used for low-delay communication, which comprises the following modules:
-a first sending module: for transmitting first signaling, the first signaling being used to determine a first time-frequency resource;
-a second processing module: for transmitting a first wireless signal on the first time-frequency resource or for receiving a first wireless signal on the first time-frequency resource.
Wherein the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in the time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval is no more than 1ms in duration.
As an embodiment, the first sending module is further configured to send a second signaling, and the second signaling is used to determine the target time interval. The second signaling is physical layer signaling.
In one embodiment, the first sending module is further configured to send third signaling, and the third signaling is used to determine L time-frequency resource pools. The time durations of the time intervals occupied by the radio signals on the L time-frequency resource pools are L time durations respectively. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. And L is a positive integer.
According to an aspect of the application, the above user equipment is characterized in that the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
implicitly indicating the first time-frequency resource from the target time-frequency resource pool;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
According to an aspect of the present application, the above user equipment is characterized in that the scheduling granularity of the first time-frequency resource in the frequency domain decreases as the duration of the target time interval increases.
According to an aspect of the application, the above user equipment is characterized in that a first bit block is used for generating the first radio signal. The time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
According to an aspect of the present application, the above user equipment is characterized in that the first signaling contains first information, the first information contains M information bits, the M information bits are used for indicating frequency domain positions of the first time-frequency resources, and the M is related to the duration of the target time interval. And M is a positive integer.
Compared with the prior art, the method has the following technical advantages:
-optimizing the design of the first signaling and the scheduling of the first radio signal by associating the scheduling granularity of the first time/frequency resource in the frequency domain with the duration of the target time interval.
By designing the third signaling, L time-frequency resource pools are allocated for the L durations, and when transmission requirements corresponding to different durations are ensured, resources are reasonably allocated, thereby avoiding waste.
Establishing a relationship between the first information and the duration of the target time interval by design, and reducing an information bit used for the first time-frequency resource indication in the first signaling in a low-delay transmission scenario, thereby reducing the overhead of control signaling and reducing the complexity of blind detection of the UE.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 shows a flow diagram of the transmission of the first wireless signal according to an embodiment of the application;
fig. 2 shows a flow diagram of the transmission of the first wireless signal according to another embodiment of the present application;
FIG. 3 shows a schematic diagram of the L time-frequency resource pools according to an embodiment of the present application;
fig. 4 is a schematic diagram illustrating the durations of the first time-frequency resource corresponding to different target time intervals according to an embodiment of the application;
FIG. 5 shows a block diagram of a processing device in a UE according to an embodiment of the application;
fig. 6 shows a block diagram of a processing means in a base station according to an embodiment of the present application;
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flow chart of transmission of the first wireless signal according to one aspect of the present application, as shown in fig. 1. In fig. 1, the base station N1 is a maintenance base station of the serving cell of the UE U2. Wherein the steps identified in block F0 are optional.
For theBase station N1Sending a third signaling in step S10, said third signaling being used to determine L time-frequency resource pools; sending a second signaling in step S11, the second signaling being used for determining the target time interval; sending a first signaling in step S12, the first signaling being used to determine a first time-frequency resource; a first wireless signal is transmitted on the first time-frequency resource in step S13.
ForUE U2In step S20, a third signaling is received, said third signaling being used for determining L time-frequency resourcesA pool; receiving second signaling in step S11, the second signaling being used for determining the target time interval; receiving a first signaling in step S12, the first signaling being used to determine a first time-frequency resource; a first wireless signal is received on the first time-frequency resource in step S13.
As a sub-embodiment, the first time-frequency resource includes K first sub-time-frequency resources, a frequency domain resource occupied by the first sub-time-frequency resource is equal to a scheduling granularity of the first time-frequency resource on a frequency domain, and a time domain resource occupied by the first sub-time-frequency resource is less than or equal to a duration of the target time interval. Under the condition that other configurations are the same, the number of RUs occupied by the first sub time-frequency resource is independent of the duration of the target time interval. And the first sub time-frequency resource occupies bandwidths corresponding to the Z PRBs in a frequency domain. Z is a positive integer.
As a subsidiary embodiment of this sub-embodiment, the Z PRBs are contiguous in the frequency domain.
As an auxiliary embodiment of this sub-embodiment, the Z PRBs are discrete in the frequency domain.
As a sub-embodiment of this sub-embodiment, the value of Z is related to the duration of the target time interval.
As an example of this subsidiary embodiment, the duration of said target time interval is equal to 7 multicarrier symbols, said Z is equal to 2; the target time interval is equal in duration to 4 multicarrier symbols, the Z is equal to one of {3,4 }; the target time interval is equal in duration to 2 multicarrier symbols, the Z is equal to one of {6,7 }.
Example 2
For theBase station N3In step S30, a third signaling is sent, which is used to determine LA time-frequency resource pool; sending a second signaling in step S31, the second signaling being used to determine the target time interval; transmitting first signaling in step S32, the first signaling being used to determine first time-frequency resources; a first wireless signal is received on the first time-frequency resource in step S33.
For theUE U4Receiving a third signaling in step S40, said third signaling being used for determining L time-frequency resource pools; receiving second signaling in step S41, the second signaling being used to determine the target time interval; receiving a first signaling in step S42, the first signaling being used for determining a first time-frequency resource; a first wireless signal is transmitted on the first time-frequency resource in step S43.
As a sub-embodiment, the first time-frequency resource includes K first sub-time-frequency resources, a frequency domain resource occupied by the first sub-time-frequency resource is equal to a scheduling granularity of the first time-frequency resource on a frequency domain, and a time domain resource occupied by the first sub-time-frequency resource is less than or equal to a duration of the target time interval. Under the condition that other configurations are the same, the number of RUs occupied by the first sub time-frequency resource is independent of the duration of the target time interval. And the first sub time frequency resource occupies bandwidths corresponding to the Z PRBs in a frequency domain. Z is a positive integer.
As a subsidiary embodiment of this sub-embodiment, the Z PRBs are contiguous in the frequency domain.
As an auxiliary embodiment of this sub-embodiment, the Z PRBs are discrete in the frequency domain.
As a sub-embodiment of this sub-embodiment, the value of Z is related to the duration of the target time interval.
As an example of this subsidiary embodiment, the duration of said target time interval is equal to 7 multicarrier symbols, said Z is equal to 2; the target time interval is equal in duration to 4 multicarrier symbols, the Z is equal to one of {3,4 }; the target time interval is equal in duration to 2 multicarrier symbols, the Z is equal to one of {6,7 }.
Example 3
Embodiment 3 illustrates a schematic diagram of the L time-frequency resource pools according to one embodiment of the present application, as shown in fig. 3. In fig. 3, { duration #1, duration # 2, \8230;, duration # L } refers to the length of the time window occupied by the L time-frequency resource pools in the time domain, respectively.
As a sub-embodiment, the time length # i and the time length # j are unequal time lengths, and the time length # i and the time length # j are any two time lengths of the L time lengths. The i and the j are both positive integers less than L, and the i is not equal to the j.
As a sub-embodiment, the L time-frequency resource pools are all located in one subframe.
As an additional embodiment of this sub-embodiment, the L time-frequency resource pools are orthogonal in the frequency domain.
As an auxiliary embodiment of the sub-embodiment, the L time-frequency resource pools are overlapped in the frequency domain.
Example 4
Embodiment 4 illustrates a schematic diagram of the durations of the first time-frequency resource corresponding to different target time intervals according to one embodiment of the present application, as shown in fig. 4. Fig. 4-a of fig. 4 is a diagram in which the duration of the target time interval for the first time-frequency resource pair is equal to a first time length, and fig. 4-B of fig. 4 is a diagram in which the duration of the target time interval for the first time-frequency resource pair is equal to a second time length. The first length of time is less than the second length of time. The bandwidth occupied by the first time-frequency resource in the frequency domain under the first time length is equal to S1 (kHz), and the bandwidth occupied by the first time-frequency resource in the frequency domain under the first time length is equal to S2 (kHz). The bold boxes in the figure correspond to the RUs described herein for the first set of time and frequency resources at different time durations, and the boxes filled with the slanted boxes in the figure correspond to a given set of RUs other than the RUs occupied by the first wireless signal in the first set of time and frequency resources.
As a sub-embodiment, the first time-frequency resource shown in the figure is directed to the first sub-time-frequency resource described in this application.
As an auxiliary embodiment of this sub-embodiment, under the condition that other configurations are the same, the number of RUs occupied by the first sub-time-frequency resource in fig. 4-a is the same as the number of RUs occupied by the first sub-time-frequency resource in fig. 4-B.
As an additional embodiment of this sub-embodiment, the first sub-time-frequency resource occupies 168 RUs in the normal CP.
As an additional embodiment of this sub-embodiment, the first sub-time-frequency resource occupies 144 RUs under the extended CP.
As an adjunct embodiment of this sub-embodiment, the number of RUs occupied by said given set of RUs in one said first sub-time-frequency resource in fig. 4-a and the number of RUs occupied by said given set of RUs in one said first sub-time-frequency resource in fig. 4-B are different.
As an additional embodiment of this sub-embodiment, the first time length corresponds to T1 multicarrier symbols, the second time length corresponds to T2 multicarrier symbols, and a product of T1 and S1 is equal to a product of T2 and S2. And T1, T2, S1 and S2 are all positive integers.
As a sub-embodiment, the given set of RUs is used for transmitting at least one of { PSS, SSS, CRS, PBCH }.
As a sub-embodiment, the first signaling is used to determine the first time-frequency resource, and the first wireless signal occupies a portion of RUs in the first time-frequency resource.
As a sub-embodiment, the first time length corresponds to a time during which 2 multicarrier symbols last.
As a sub-embodiment, the second length of time corresponds to a time duration of 7 multicarrier symbols.
Example 5
Embodiment 5 illustrates a block diagram of a processing device in a user equipment, as shown in fig. 5. In fig. 5, the ue processing apparatus 100 is mainly composed of a first receiving module 101 and a first processing module 102.
The first receiving module 101: for receiving first signaling, the first signaling being used to determine a first time-frequency resource;
the first processing module 102: for receiving a first wireless signal on the first time-frequency resource or for transmitting a first wireless signal on the first time-frequency resource.
In embodiment 5, the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in the time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval has a duration of no more than 1ms.
As an embodiment, the first receiving module 101 is further configured to receive a second signaling, where the second signaling is used to determine the target time interval. The second signaling is physical layer signaling.
As an embodiment, the first receiving module 101 is further configured to receive a third signaling, where the third signaling is used to determine L time-frequency resource pools. The time durations of the time intervals occupied by the radio signals on the L time-frequency resource pools are L time durations respectively. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. And L is a positive integer.
Example 6
Embodiment 6 is a block diagram illustrating a processing apparatus in a base station device, as shown in fig. 6. In fig. 6, the base station device processing apparatus 200 is mainly composed of a first sending module 201 and a second processing module 202.
The first sending module 201: for transmitting first signaling, the first signaling being used to determine a first time-frequency resource;
the second processing module 202: for transmitting a first wireless signal on the first time-frequency resource or for receiving a first wireless signal on the first time-frequency resource.
In embodiment 6, the first signaling is physical layer signaling. The first time-frequency resource occupies a target time interval in the time domain. The scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval. The target time interval has a duration of no more than 1ms.
For an embodiment, the first sending module 201 is further configured to send a second signaling, and the second signaling is used to determine the target time interval. The second signaling is physical layer signaling.
For an embodiment, the first sending module 201 is further configured to send a third signaling, and the third signaling is used to determine L time-frequency resource pools. The time intervals occupied by the wireless signals on the L time frequency resource pools respectively have L durations. The duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools. L is a positive integer.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific combination of software and hardware. The UE and the terminal in the present application include, but are not limited to, a mobile phone, a tablet computer, a notebook, a vehicle-mounted Communication device, a wireless sensor, an internet access card, an internet of things terminal, an RFID terminal, an NB-IOT terminal, a Machine Type Communication (MTC) terminal, an enhanced MTC terminal, a data card, an internet access card, a vehicle-mounted Communication device, a low-cost mobile phone, a low-cost tablet computer, and other wireless Communication devices. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (32)
1. A method in a user equipment used for low latency communication, comprising the steps of:
-step a. Receiving first signalling, the first signalling being used to determine first time-frequency resources;
receiving a first wireless signal on the first time-frequency resource, wherein the first signaling is DCI of a downlink grant, and a transmission channel corresponding to the first wireless signal is DL-SCH; or, transmitting a first wireless signal on the first time-frequency resource, where the first signal is DCI of an uplink grant, and a transmission channel corresponding to the first wireless signal is UL-SCH;
the first time-frequency resource occupies a target time interval in a time domain; scheduling granularity of the first time-frequency resource in a frequency domain is related to duration of the target time interval; the duration of the target time interval is not greater than 1ms; the physical layer channel corresponding to the first signaling is PDCCH or sPDCCH; the first signaling is further used to determine one or more of an MCS, NDI, RV, or HARQ process number for the first wireless signal; the first signaling contains first information, the first information containing M information bits, the M information bits being used to indicate a frequency domain location of the first time-frequency resource, the M being related to a duration of the target time interval; and M is a positive integer.
2. The method of claim 1, wherein step a further comprises:
receiving a second signaling;
wherein the second signaling is used to determine the target time interval, the second signaling being physical layer signaling.
3. The method of claim 1, wherein step a further comprises:
receiving a third signaling;
wherein the third signaling is used to determine L pools of time-frequency resources; the duration of the time interval occupied by the wireless signals on the L time-frequency resource pools is respectively L durations; the duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools; l is a positive integer.
4. The method of claim 3, wherein the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
-implicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
5. The method of claim 3, wherein the first signaling contains a total of R information bits, and wherein R is related to an index of the target time-frequency resource pool in the L time-frequency resource pools.
6. The method according to any of claims 1-5, wherein the scheduling granularity of the first time-frequency resource in the frequency domain decreases with increasing duration of the target time interval.
7. The method according to any of claims 1-5, characterized in that a first block of bits is used for generating the first radio signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
8. The method of claim 6, wherein a first block of bits is used to generate the first wireless signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
9. A method in a base station for low latency communication, comprising the steps of:
-step a. Transmitting first signalling, said first signalling being used to determine first time-frequency resources;
a step b, transmitting a first wireless signal on the first time-frequency resource, where the first signaling is DCI of a downlink grant, and a transmission channel corresponding to the first wireless signal is DL-SCH; or, receiving a first wireless signal on the first time-frequency resource, where the first signal is DCI authorized in an uplink, and a transmission channel corresponding to the first wireless signal is an UL-SCH;
wherein the first time-frequency resource occupies a target time interval in a time domain; the scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval; the duration of the target time interval is not greater than 1ms; the physical layer channel corresponding to the first signaling is PDCCH or sPDCCH; the first signaling is further used to determine one or more of an MCS, NDI, RV, or HARQ process number for the first wireless signal; the first signaling contains first information comprising M information bits, the M information bits being used to indicate a frequency domain location of the first time-frequency resource, the M being related to a duration of the target time interval; and M is a positive integer.
10. The method of claim 9, wherein step a further comprises:
sending a second signaling;
wherein the second signaling is used to determine the target time interval, the second signaling being physical layer signaling.
11. The method of claim 9, wherein step a further comprises:
sending a third signaling;
wherein the third signaling is used to determine L pools of time-frequency resources; the duration of the time interval occupied by the wireless signals on the L time-frequency resource pools is respectively L durations; the duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools; and L is a positive integer.
12. The method of claim 11, wherein the first signaling is used for at least one of:
-explicitly indicating said first time-frequency resource from said target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
implicitly indicating the first time-frequency resource from the target time-frequency resource pool;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
13. The method of claim 11, wherein the first signaling contains a total of R information bits, and wherein the R and the index of the target time-frequency resource pool in the L time-frequency resource pools are related.
14. The method according to any of claims 9-13, wherein the scheduling granularity of the first time-frequency resource in the frequency domain decreases with increasing duration of the target time interval.
15. The method according to any of claims 9-13, characterized in that a first block of bits is used for generating the first radio signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
16. The method of claim 14, wherein a first block of bits is used to generate the first wireless signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
17. A user equipment for use in low latency communications, comprising:
-a first receiving module: for receiving first signaling, the first signaling being used to determine a first time-frequency resource;
-a first processing module: the downlink control channel is used for receiving a first wireless signal on the first time-frequency resource, the first signaling is DCI (downlink control information) of a downlink grant, and a transmission channel corresponding to the first wireless signal is DL-SCH; or, a first wireless signal is sent on the first time-frequency resource, the first signal is DCI authorized in uplink, and a transmission channel corresponding to the first wireless signal is UL-SCH;
the first time-frequency resource occupies a target time interval in a time domain; the scheduling granularity of the first time-frequency resource in the frequency domain is related to the duration of the target time interval; the duration of the target time interval is not greater than 1ms; the physical layer channel corresponding to the first signaling is PDCCH or sPDCCH; the first signaling is further used to determine one or more of an MCS, NDI, RV or HARQ process number for the first wireless signal; the first signaling contains first information, the first information containing M information bits, the M information bits being used to indicate a frequency domain location of the first time-frequency resource, the M being related to a duration of the target time interval; and M is a positive integer.
18. The UE of claim 17, wherein the first receiving module is further configured to receive a second signaling, and wherein the second signaling is used for determining the target time interval; the second signaling is physical layer signaling.
19. The UE of claim 17, wherein the first receiving module is further configured to receive a third signaling, and wherein the third signaling is used to determine L time-frequency resource pools; the duration of the time interval occupied by the wireless signals on the L time-frequency resource pools is respectively L durations; the duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools; and L is a positive integer.
20. The user equipment as recited in claim 19, wherein the first signaling is used for at least one of:
-explicitly indicating said first time-frequency resource from said target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from the L time-frequency resource pools;
-implicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
21. The UE of claim 19, wherein the first signaling contains a total of R information bits, and wherein R and the index of the target time-frequency resource pool in the L time-frequency resource pools are related.
22. The UE of any of claims 17-21, wherein the scheduling granularity of the first time/frequency resource in the frequency domain decreases with increasing duration of the target time interval.
23. The user equipment according to any of claims 17-21, characterized in that a first block of bits is used for generating the first radio signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
24. The user equipment of claim 22, wherein a first block of bits is used to generate the first wireless signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
25. A base station device used for low latency communication, comprising:
-a first sending module: for transmitting first signaling, the first signaling being used to determine a first time-frequency resource;
-a second processing module: the downlink control channel is used for sending a first wireless signal on the first time-frequency resource, the first signaling is DCI (downlink control information) of a downlink grant, and a transmission channel corresponding to the first wireless signal is DL-SCH; or, receiving a first wireless signal on the first time-frequency resource, where the first signal is DCI of an uplink grant, and a transmission channel corresponding to the first wireless signal is UL-SCH;
the first time-frequency resource occupies a target time interval in a time domain; scheduling granularity of the first time-frequency resource in a frequency domain is related to duration of the target time interval; the duration of the target time interval is not greater than 1ms; the physical layer channel corresponding to the first signaling is PDCCH or sPDCCH; the first signaling is further used to determine one or more of an MCS, NDI, RV, or HARQ process number for the first wireless signal; the first signaling contains first information, the first information containing M information bits, the M information bits being used to indicate a frequency domain location of the first time-frequency resource, the M being related to a duration of the target time interval; and M is a positive integer.
26. The base station device of claim 25, wherein the first sending module is further configured to send a second signaling, and wherein the second signaling is used for determining the target time interval; the second signaling is physical layer signaling.
27. The base station device of claim 25, wherein the first sending module is further configured to send a third signaling;
wherein the third signaling is used to determine L pools of time-frequency resources; the duration of the time interval occupied by the wireless signals on the L time-frequency resource pools is respectively L durations; the duration of the target time interval is one of the L durations, the first time-frequency resource belongs to a target time-frequency resource pool, and the target time-frequency resource pool is one of the L time-frequency resource pools; and L is a positive integer.
28. The base station device of claim 27, wherein the first signaling is used for at least one of:
explicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
explicitly indicating the target time-frequency resource pool from among the L time-frequency resource pools;
-implicitly indicating the first time-frequency resource from the target pool of time-frequency resources;
implicitly indicating the target time-frequency resource pool from the L time-frequency resource pools.
29. The base station device of claim 27, wherein the first signaling contains a total of R information bits, and wherein the R is related to an index of the target time-frequency resource pool in the L time-frequency resource pools.
30. The base station apparatus according to any of claims 25-29, wherein the scheduling granularity of the first time-frequency resource in the frequency domain decreases with increasing duration of the target time interval.
31. Base station device according to any of claims 25-29, characterized in that a first block of bits is used for generating said first radio signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
32. The base station apparatus of claim 30, wherein a first block of bits is used to generate the first wireless signal; the time length of the transmission time corresponding to the first bit block is equal to a first time length, the duration of the target time interval is related to the first time length, and the first time length is not greater than 1ms.
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| CN116782395A (en) * | 2018-02-05 | 2023-09-19 | 上海朗帛通信技术有限公司 | User equipment, method and device in base station for wireless communication |
| CN110167186B (en) | 2018-02-13 | 2020-06-30 | 上海朗帛通信技术有限公司 | Method and device in communication node for wireless communication |
| CN110248368B (en) * | 2018-03-08 | 2023-09-12 | 上海朗帛通信技术有限公司 | User equipment, method and device in base station for wireless communication |
| CN111769925B (en) * | 2018-03-12 | 2022-07-05 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN110266451B (en) * | 2018-03-12 | 2021-12-24 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station of unlicensed spectrum |
| CN110267344B (en) * | 2018-03-12 | 2023-04-07 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN116321512A (en) * | 2018-03-22 | 2023-06-23 | 上海朗帛通信技术有限公司 | User equipment, method and device in base station for wireless communication |
| WO2019222952A1 (en) * | 2018-05-24 | 2019-11-28 | 南通朗恒通信技术有限公司 | Method and apparatus used in user equipment and in base station for wireless communication |
| CN110602785B (en) * | 2018-06-12 | 2023-02-03 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN111884788B (en) * | 2018-07-30 | 2024-03-29 | 迪朵无线创新有限公司 | User equipment, method and device in base station for wireless communication |
| CN111263447B (en) * | 2018-12-03 | 2022-09-27 | 上海朗帛通信技术有限公司 | Method and device in user equipment in wireless communication |
| CN112040543B (en) * | 2019-06-04 | 2024-04-12 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
| CN112055411B (en) * | 2019-06-06 | 2024-04-16 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
| CN112118585A (en) * | 2019-06-19 | 2020-12-22 | 上海朗帛通信技术有限公司 | Method and device in communication node for wireless communication |
| CN112235870B (en) * | 2019-07-15 | 2022-07-05 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
| CN112769532B (en) * | 2019-11-06 | 2022-12-27 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
| CN112887065B (en) * | 2019-11-29 | 2022-08-26 | 上海朗帛通信技术有限公司 | Method and equipment used for wireless communication |
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| CN101547482A (en) * | 2008-03-28 | 2009-09-30 | 中兴通讯股份有限公司 | Method for scheduling wireless resources |
| CN101742665B (en) * | 2008-11-05 | 2012-02-29 | 中兴通讯股份有限公司 | Method for sub-channelizing and mapping wireless resources |
| CN101908955A (en) * | 2009-06-05 | 2010-12-08 | 大唐移动通信设备有限公司 | Downlink information transmission method and device of return link |
| CN102202346B (en) * | 2010-03-22 | 2014-12-10 | 电信科学技术研究院 | Method and device for data mapping |
| US9705654B2 (en) * | 2011-11-08 | 2017-07-11 | Apple Inc. | Methods and apparatus for an extensible and scalable control channel for wireless networks |
| CN104469926B (en) * | 2013-09-16 | 2019-03-12 | 上海朗帛通信技术有限公司 | Transmission method and device in a kind of D2D system |
| CN104955111B (en) * | 2014-03-31 | 2019-03-22 | 上海朗帛通信技术有限公司 | Transmission method and device in a kind of unlicensed band |
| CN105338635B (en) * | 2014-08-06 | 2020-04-10 | 电信科学技术研究院 | Service transmission method and equipment |
| CN104468030B (en) * | 2014-08-26 | 2018-06-05 | 上海华为技术有限公司 | A kind of data transmission method, user equipment and base station |
| CN105682241B (en) * | 2014-11-21 | 2020-06-16 | 中兴通讯股份有限公司 | Method and device for occupying unauthorized carrier |
| CN110493878B (en) * | 2015-09-20 | 2022-08-26 | 上海朗帛通信技术有限公司 | Low-delay method and device in wireless communication |
| CN106561066B (en) * | 2015-10-02 | 2019-07-05 | 上海朗帛通信技术有限公司 | The method and apparatus that one of wireless communication reduces network delay |
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| CN107690188A (en) | 2018-02-13 |
| CN110740519A (en) | 2020-01-31 |
| CN107690188B (en) | 2019-12-24 |
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