CN107920389B - Method and device for resource mapping adjustment in UE and base station - Google Patents
Method and device for resource mapping adjustment in UE and base station Download PDFInfo
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- CN107920389B CN107920389B CN201610878256.1A CN201610878256A CN107920389B CN 107920389 B CN107920389 B CN 107920389B CN 201610878256 A CN201610878256 A CN 201610878256A CN 107920389 B CN107920389 B CN 107920389B
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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
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
Abstract
The invention discloses a method and a device for resource mapping adjustment in UE (user equipment) and a base station. The UE firstly receives a first signaling; the first wireless signal is then received on the first time frequency resource or transmitted on the first time frequency resource. The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2. The method disclosed by the invention can adjust the resource mapping rule according to the service types transmitted simultaneously, reduce the adverse effect of other transmissions on target transmission and improve the performance.
Description
Technical Field
The present invention relates to a transmission scheme in a wireless communication system, and more particularly, to a method and apparatus for resource mapping adjustment.
Background
In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on a New air interface technology (NR, New Radio) is decided in #72 global meetings of 3GPP (3rd Generation partnership project) RAN (Radio Access Network).
In NR systems, the three most important application scenarios are eMBB (enhanced Mobile broadband), URLLC (Ultra-Reliable and Low Latency Communications), and mtc (massive Machine Type Communications). In URLLC, a typical application scenario is that the amount of information transmitted each time is small, and the requirements on transmission delay and transmission reliability are high. Due to the low delay requirement of the packet URLLC service coming from time to time, the URLLC service of the above type may be in high priority during the resource allocation process, and thus may interrupt or affect the service (such as eMBB or mtc), which may cause the degradation of the transmission performance of the service, or even cause the failure of the first transmission.
Disclosure of Invention
In the existing wireless communication system (such as LTE), both uplink and downlink transmissions adopt a fixed resource mapping manner. For example, the Physical Downlink Shared CHannel (PDSCH) of LTE sequentially maps modulation symbols of the PDSCH to allocated RE (Resource Element) resources in an order of first Frequency increase and then Time increase, whereas the Physical Uplink Shared CHannel (PUSCH) of LTE sequentially maps the Resource mapping order of first Frequency increase and then Time increase into an actual Resource mapping order of first Time increase and then Frequency increase due to the use of a symbol-level interleaver. The order of mapping of frequency increase first and time increase is advantageous for the reduction of receiver processing delay while the order of frequency increase first and time increase can increase frequency diversity.
In the NR system, due to the introduction of multiple services, especially the requirements of URLLC service on low delay and high reliability, the scheme of using fixed resource mapping in the existing LTE system may not be suitable for the case of URLLC and other services mixed transmission. For example, when a suddenly incoming packet low-delay URLLC service punctures or interrupts an eMBB service being transmitted, and the eMBB service adopts a resource mapping sequence in which a frequency is increased first and a time is increased later, the URLLC may destroy a continuous string of modulation symbols of the eMBB. If the resource mapping mode of the eMMC can be changed at this time to disperse the influence of the URLLC, the loss of the eMMC performance can be greatly reduced.
The invention provides a solution to the problem of resource mapping caused by coexistence of multiple services in a system. The solution of the invention adapts to different transmission service conditions by flexibly adjusting the sequence or the mode of resource mapping, and improves the transmission performance. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
The invention discloses a method in UE supporting resource mapping adjustment, which comprises the following steps:
-step a. receiving a first signalling;
-step b. receiving a first wireless signal on a first time-frequency resource; or transmitting the first wireless signal on the first time-frequency resource.
The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2.
As an embodiment, the introduction of the X mapping criteria may adjust the target mapping criteria according to business requirements and different performance requirements, so as to optimize the performance of the system. Particularly, in a network supporting URLLC (Ultra-Reliable Low-Latency Communications), the resource mapping rule for transmitting other services (such as broadband mobile communication) is adjusted according to the scheduling configuration of URLLC, so as to reduce the adverse effect of URLLC on other services.
As an embodiment, the sub-carriers are OFDM (Orthogonal Frequency division multiplexing) sub-carriers.
As one embodiment, the multicarrier symbol is an OFDM symbol. As a sub-embodiment, the multicarrier symbol comprises a CP (Cyclic Prefix).
As an example, the sub-carriers are { DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing), FB-OFDM (Filter Bank-Orthogonal Frequency Division Multiplexing), CPS-OFDM (Cyclic Pulse shape-Orthogonal Frequency Division Multiplexing), CPLP-OFDM (Cyclic Prefix coded OFDM, short Cyclic Prefix OFDM), FC-OFDM (Flexible Configured OFDM), FCP-OFDM (Flexible CP-OFDM ), exi-OFDM, UW-S-OFDM (Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread-OFDM, orthogonal time-frequency space), W-OFDM (Windowed OFDM), F-OFDM (Filtered OFDM) }.
As an example, the multi-carrier symbol is { DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing), FB-OFDM (Filter Bank-Orthogonal Frequency Division Multiplexing), CPS-OFDM (Cyclic Pulse Shaped-Orthogonal Frequency Division Multiplexing), CPLP-OFDM (Cyclic Prefix coded OFDM, short-cycle Precoded OFDM), FC-OFDM (Flexible configured OFDM), FCP-OFDM (Flexible CP-OFDM ), flex-OFDM, UW-S-OFDM (Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform OFDM, orthogonal time-frequency space), W-OFDM (Windowed OFDM), F-OFDM (Filtered OFDM) }.
As an embodiment, the first signaling is higher layer signaling.
As an embodiment, the first signaling is RRC (Radio Resource Control).
As an embodiment, the first signaling is physical layer signaling.
As an embodiment, the first signaling is physical layer signaling, and the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As an embodiment, the first signaling explicitly indicates the target mapping criterion.
As one embodiment, the first signaling includes a default configuration of the target mapping criterion.
As an embodiment, the first signaling implicitly indicates the target mapping criterion.
As an embodiment, the transmission Channel corresponding to the first wireless signal is a Downlink Shared Channel (DL-SCH).
As an embodiment, the first wireless signal corresponds to a physical downlink control channel.
As an embodiment, the transmission channel corresponding to the first wireless signal is a Multicast Channel (MCH).
As an embodiment, the transmission CHannel corresponding to the first wireless signal is an Uplink Shared CHannel (UL-SCH).
As an embodiment, the first wireless signal corresponds to a physical uplink control channel.
As an embodiment, the first modulation symbol sequence sequentially passes through a Layer Mapper (Layer Mapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and a baseband signal Generation (Generation) to obtain the first wireless signal. As a sub-embodiment, the baseband signal generation uses OFDM waveforms. As a sub-embodiment, the baseband signal generation uses a waveform obtained based on OFDM, and the baseband signal generation uses a non-OFDM waveform.
As an embodiment, the first modulation symbol sequence sequentially passes through a resource element Mapper (resource element Mapper), and the first wireless signal is obtained after a baseband signal is generated (Generation).
As an embodiment, the first modulation symbol sequence is sequentially subjected to transform precoding (transformcoding), Resource Element Mapper (Resource Element Mapper), and baseband signal Generation (Generation) to obtain the first wireless signal.
As an embodiment, the first modulation symbol sequence sequentially passes through a Layer Mapper (Layer Mapper), Transform Precoding (Transform Precoding), a Resource Element Mapper (Resource Element Mapper), and baseband signal Generation (Generation) to obtain the first radio signal.
As an embodiment, the first modulation symbol sequence sequentially passes through a Layer Mapper (Layer Mapper), Transform Precoding (Transform Precoding), Precoding (Precoding), resource element Mapper (resource element Mapper), and baseband signal Generation (Generation) to obtain the first radio signal.
In particular, according to one aspect of the invention, the above method is characterized in that, according to said target mapping criterion, there are two modulation symbols in said first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to said Q RUs, said first RU and said second RU occupying the same multicarrier symbols in the time domain and being adjacent in the frequency domain, the positions of the modulation symbols mapped to said first RU and the modulation symbols mapped to said second RU in said first modulation symbol sequence being spaced.
As an embodiment, the positions of the modulation symbols mapped onto the first RU and the modulation symbols mapped onto the second RU in the first modulation symbol sequence are spaced apart from each other, i.e. consecutive modulation symbols in the first modulation symbol sequence are not affected.
As one embodiment, the first RU has a subcarrier spacing equal to a subcarrier spacing of the second RU.
As one embodiment, the first RU has an unequal inter-subcarrier spacing from the second RU.
As an embodiment, the first RU and the second RU being adjacent in the frequency domain means that a minimum value of the frequency of the first RU is equal to a maximum value of the frequency of the second RU; or the first and second RUs being adjacent in the frequency domain means that a frequency maximum of the first RU is equal to a frequency minimum of the second RU.
As an embodiment, the position of two modulation symbols in the first modulation symbol sequence is spaced, meaning that there is at least one modulation symbol in between the two modulation symbols.
Specifically, according to an aspect of the present invention, the method is characterized in that the first modulation symbol sequence is generated by subjecting the first bit block to at least a first one of { modulation, layer mapping, precoding }, and the target mapping criterion includes: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
As one embodiment, the first bit block includes a positive integer number of bits.
As an embodiment, the first bit block is generated by Scrambling (Scrambling) a second bit block, and the second bit block includes an output of one code block after channel coding. As a sub embodiment, the code Block is a TB (Transport Block). As a sub embodiment, the code Block is a part of a Transport Block (TB).
As an embodiment, the first bit block comprises an output of a code block after channel coding. As a sub embodiment, the code Block is a TB (Transport Block). As a sub embodiment, the code Block is a part of a Transport Block (TB).
As an embodiment, the first bit block generates the first Modulation symbol sequence through at least a first one of { Modulation, layer mapping, precoding }, where the Modulation is one of { BPSK (Binary Phase Shift Keying), pi/2 BPSK, QPSK (Quadrature Phase Shift Keying), pi/4 QPSK, 16QAM (Quadrature Amplitude Modulation), 64QAM, 256QAM, 1024QAM, 2048QAM }.
As an example, the interleaving refers to an operation of changing the order of elements in a sequence.
As an embodiment, the interleaving of the P first modulation symbol groups to generate the second modulation symbol sequence means: and the P first modulation symbol groups obtain the second modulation symbol sequence by taking the modulation symbol groups as a unit according to a given regular transformation sequence. As a sub-embodiment, the given rule is based on a pseudo-random sequence.
As an embodiment, the interleaving of the P first modulation symbol groups to generate the second modulation symbol sequence means: and selecting one modulation symbol from each of the P first modulation symbol groups to obtain a second modulation symbol group, wherein L second modulation symbol groups sequentially form the second modulation symbol sequence, and L is equal to a positive integer obtained by rounding the quotient of Q and P.
As an embodiment, the second modulation symbol sequence sequentially passes through a Layer Mapper (Layer Mapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and an OFDM signal Generation (Generation) to obtain the first radio signal.
Specifically, according to an aspect of the present invention, the method is characterized in that P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
As an example, the size of P may be variable or configurable to enable flexible control of the interleaving depth, which may reduce memory requirements and processing power requirements of the transmitter and receiver.
As an embodiment, the P is linearly related to the number of subcarriers occupied by the first time-frequency resource.
As an embodiment, P is linearly related to the number of multicarrier symbols occupied by the first time-frequency resource.
As an embodiment, the P and the product of the number of subcarriers occupied by the first time-frequency resource and the number of multicarrier symbols occupied by the first time-frequency resource are linearly related.
As an embodiment, the P is configured through higher layer signaling.
As an embodiment, the P is configured through RRC (Radio Resource Control).
As an embodiment, the P is configured through physical layer signaling. As a sub-embodiment, the physical layer signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As an embodiment, the P is explicitly indicated by signaling.
As an embodiment, the P is implicitly indicated by signaling.
Specifically, according to an aspect of the present invention, the method is characterized in that the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion, where the Q modulation symbols are sequentially mapped to the Q RUs according to an order of increasing frequency and increasing time.
As an embodiment, the first mapping criterion is the target mapping criterion.
As one embodiment, the first mapping criterion and the target mapping criterion are two different mapping criteria of the X mapping criteria.
As an embodiment, the first mapping criterion and the target mapping criterion are two different mapping criteria of the X mapping criteria, the X being equal to 2.
As an embodiment, the first mapping criterion and the target mapping criterion are two different mapping criteria of the X mapping criteria to which also a mapping criterion different from both the first mapping criterion and the target mapping criterion exists.
Specifically, according to an aspect of the present invention, the method is characterized in that the step a further includes the steps of:
step A0. receives the second signaling.
Wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
As an embodiment, the second signaling is higher layer signaling.
As an embodiment, the second signaling is RRC (Radio Resource Control).
As an embodiment, the second signaling is physical layer signaling.
As an embodiment, the second signaling includes DCI (Downlink Control Information).
As an embodiment, the second signaling is physical layer signaling, and the second signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As an embodiment, the second signaling explicitly indicates at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
As an embodiment, the second signaling includes a default configuration of at least one of the { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
As an embodiment, the second signaling implicitly indicates at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
The invention discloses a method in a base station for supporting resource mapping adjustment, which comprises the following steps:
-step a. sending a first signaling;
-step b. transmitting a first wireless signal on a first time-frequency resource; or receiving a first wireless signal on a first time-frequency resource.
The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2.
In particular, according to one aspect of the invention, the above method is characterized in that, according to said target mapping criterion, there are two modulation symbols in said first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to said Q RUs, said first RU and said second RU occupying the same multicarrier symbols in the time domain and being adjacent in the frequency domain, the positions of the modulation symbols mapped to said first RU and the modulation symbols mapped to said second RU in said first modulation symbol sequence being spaced.
Specifically, according to an aspect of the present invention, the method is characterized in that the first modulation symbol sequence is generated by subjecting the first bit block to at least a first one of { modulation, layer mapping, precoding }, and the target mapping criterion includes: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
Specifically, according to an aspect of the present invention, the method is characterized in that P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
Specifically, according to an aspect of the present invention, the method is characterized in that the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion, where the Q modulation symbols are sequentially mapped to the Q RUs according to an order of increasing frequency and increasing time.
Specifically, according to an aspect of the present invention, the method is characterized in that the step a further includes the steps of:
step A0. sends the second signaling.
Wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
The invention discloses a user equipment supporting resource mapping adjustment, which comprises the following modules:
-a first processing module: for receiving a first signaling;
-a second processing module: for receiving a first wireless signal on a first time-frequency resource; or for transmitting the first wireless signal on the first time-frequency resource.
The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2.
Specifically, according to one aspect of the present invention, the above user equipment is characterized in that, according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both of the first RU and the second RU belonging to the Q RUs, the first RU and the second RU occupying the same multicarrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, and positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence are spaced.
Specifically, according to an aspect of the present invention, the above user equipment is characterized in that the first bit block generates the first modulation symbol sequence through at least a first one of { modulation, layer mapping, precoding }, and the target mapping criterion includes: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
Specifically, according to an aspect of the present invention, the ue is characterized in that P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
Specifically, according to an aspect of the present invention, the above user equipment is characterized in that the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion, where the sequence is that frequency increases first and then time increases second.
Specifically, according to an aspect of the present invention, the user equipment is characterized in that the first processing module is further configured to receive a second signaling, where the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
The invention discloses a base station device supporting resource mapping adjustment, which comprises the following modules:
-a third processing module: for transmitting a first signaling;
-a fourth processing module: for transmitting a first wireless signal on a first time-frequency resource; or for receiving a first wireless signal on a first time-frequency resource.
The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2.
Specifically, according to one aspect of the present invention, the above-mentioned base station apparatus is characterized in that, according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both of the first RU and the second RU belonging to the Q RUs, the first RU and the second RU occupying the same multicarrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, and positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence are spaced.
Specifically, according to an aspect of the present invention, the base station apparatus is characterized in that the first bit block generates the first modulation symbol sequence through at least a first one of { modulation, layer mapping, precoding }, and the target mapping criterion includes: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
Specifically, according to an aspect of the present invention, the base station apparatus is characterized in that the P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
Specifically, according to an aspect of the present invention, the above base station device is characterized in that the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to an order of increasing frequency and increasing time according to the first mapping criterion.
Specifically, according to an aspect of the present invention, the base station apparatus is characterized in that the third processing module is further configured to send a second signaling, where the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
Compared with the prior art, the main technical advantages of the invention are summarized as follows:
the invention realizes that in a network supporting URLLC (Ultra-Reliable Low-Latency Communications) service, the resource mapping rule for transmitting other services (such as broadband mobile communication) is adjusted according to the scheduling configuration of the URLLC, so that the adverse effect of the URLLC service on the other services can be reduced.
Spreading the symbols mapped on consecutive frequency resources of the same multi-carrier symbol into a sequence of symbols serves to spread the impact of bursty URLLC traffic, improving transmission performance.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 shows a downlink wireless signal transmission flow diagram according to an embodiment of the invention;
fig. 2 illustrates an uplink wireless signal transmission flow diagram according to an embodiment of the present invention;
FIG. 3 illustrates a first RU in relation to a second RU, according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a relationship between a first modulation symbol sequence and a second modulation symbol sequence according to an embodiment of the present invention;
FIG. 5 illustrates a first mapping criterion diagram according to an embodiment of the invention;
FIG. 6 shows a block diagram of a processing device in a User Equipment (UE) according to an embodiment of the invention;
fig. 7 shows a block diagram of a processing means in a base station apparatus according to an embodiment of the present invention;
Detailed Description
The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.
Example 1
For theBase station N1The first signaling is transmitted in step S11, the second signaling is transmitted in step S12, and the first wireless signal is transmitted on the first time-frequency resource in step S13.
For theUE U2The first signaling is received in step S21, the second signaling is received in step S22, and the first wireless signal is received on the first time-frequency resource in step S23.
In embodiment 1, the first time-frequency resource is composed of Q RUs, where the RUs occupy one subcarrier in the frequency domain and occupy the duration of one multicarrier symbol in the time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2. The second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
In sub-embodiment 1 of embodiment 1, the sub-carriers are OFDM (Orthogonal Frequency division multiplexing) sub-carriers.
In sub-embodiment 2 of embodiment 1, the multicarrier symbol is an OFDM symbol. As a sub-embodiment of sub-embodiment 2, the multicarrier symbol comprises CP (Cyclic Prefix).
In sub-embodiment 3 of embodiment 1, the sub-carrier is one of FB-OFDM (Filter Bank-Orthogonal Frequency Division Multiplexing), CPS-OFDM (Cyclic pulse Shaped-Orthogonal Frequency Division Multiplexing), CPLP-OFDM (Cyclic Prefix Space coded OFDM), short Cyclic Prefix Precoded OFDM), FC-OFDM (Flexible Configured OFDM), FCP-OFDM (Flexible CP-OFDM ), Flexi-OFDM, UW DFT-S-OFDM (Unique resource Transform Orthogonal Frequency Division Multiplexing), OFDM-Orthogonal Frequency Division Multiplexing (spread Fourier Transform Orthogonal Frequency Division Multiplexing), OFDM-OFDM (Orthogonal Frequency Division Multiplexing-spread OFDM), spread Fourier Transform Orthogonal Frequency Division Multiplexing (OFDM-spread, spread OFDM), spread Fourier Transform spread OFDM, etc., and a window Filter in Time-Frequency domain filtering (OFDM-OFDM).
In sub-embodiment 4 of embodiment 1, the first signaling is RRC (Radio Resource Control).
In sub-embodiment 5 of embodiment 1, the first signaling is physical layer signaling, and the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
In sub-embodiment 6 of embodiment 1, the transmission Channel corresponding to the first radio signal is a Downlink Shared Channel (DL-SCH).
In sub-embodiment 7 of embodiment 1, a transmission CHannel corresponding to the first wireless signal is a Multicast CHannel (MCH).
In a sub-embodiment 8 of embodiment 1, the first modulation symbol sequence sequentially passes through a layer Mapper (LayerMapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and a baseband signal Generation (Generation) to obtain the first radio signal. As a sub-embodiment of sub-embodiment 8, the baseband signal generation uses an OFDM waveform. As another sub-embodiment of sub-embodiment 8, the baseband signal generation uses a waveform obtained based on OFDM, and the baseband signal generation uses a non-OFDM waveform.
In sub-embodiment 9 of embodiment 1, the first modulation symbol sequence sequentially passes through a Resource Element Mapper (Resource Element Mapper), and the first radio signal is obtained after a baseband signal is generated (Generation).
Example 2
For theBase station N3The first signaling is transmitted in step S31, the second signaling is transmitted in step S32, and the first wireless signal is received on the first time-frequency resource in step S33.
For theUE U4The first signaling is received in step S41, the second signaling is received in step S42, and the first wireless signal is transmitted on the first time-frequency resource in step S43.
In embodiment 2, the first time-frequency resource is composed of Q RUs, where the RUs occupy one subcarrier in the frequency domain and occupy the duration of one multicarrier symbol in the time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2. The second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
In sub-embodiment 1 of embodiment 2, the sub-carriers are OFDM (Orthogonal Frequency division multiplexing) sub-carriers.
In sub-embodiment 2 of embodiment 2, the multicarrier symbol is an OFDM symbol. As a sub-embodiment of sub-embodiment 2, the multicarrier symbol comprises CP (Cyclic Prefix).
In sub-embodiment 3 of embodiment 2, the sub-carriers are { DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing), FB-OFDM (Filter Bank-Orthogonal Frequency Division Multiplexing, Filter Bank Orthogonal Frequency Division Multiplexing), CPS-OFDM (Cyclic Pulse Shaped-Orthogonal Frequency Division Multiplexing), CPLP-OFDM (Cyclic Prefix length coded OFDM, short Cyclic Prefix OFDM), FC-OFDM (Flexible configured OFDM), FCP-OFDM (Flexible CP-OFDM ), flex-OFDM, w-S-OFDM (Discrete Fourier Transform extended Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform OFDM, orthogonal time-frequency space), W-OFDM (WindowedOFDM ), F-OFDM (Filtered OFDM) }.
In a sub-embodiment 4 of embodiment 2, the first signaling is RRC (Radio Resource Control).
In sub-embodiment 5 of embodiment 2, the first signaling is physical layer signaling, and the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
In sub-embodiment 6 of embodiment 2, the transmission Channel corresponding to the first radio signal is an Uplink Shared Channel (UL-SCH).
In a sub-embodiment 7 of embodiment 2, the first modulation symbol sequence sequentially passes through a layer Mapper (LayerMapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and a baseband signal Generation (Generation) to obtain the first radio signal. As a sub-embodiment of sub-embodiment 7, the baseband signal generation uses OFDM waveforms. As another sub-embodiment of sub-embodiment 7, the baseband signal generation uses a waveform obtained based on OFDM, and the baseband signal generation uses a non-OFDM waveform.
In a sub-embodiment 8 of embodiment 2, the first modulation symbol sequence sequentially passes through a Resource Element Mapper (Resource Element Mapper), and the first radio signal is obtained after a baseband signal is generated (Generation).
In sub-embodiment 9 of embodiment 2, the first modulation symbol sequence is sequentially subjected to Transform Precoding (Transform Precoding), Resource Element Mapper (Resource Element Mapper), and baseband signal Generation (Generation) to obtain the first radio signal.
In sub-embodiment 10 of embodiment 2, the first modulation symbol sequence sequentially passes through a layer mapper (LayerMapper), Transform Precoding (Transform Precoding), a Resource element mapper (Resource element mapper), and baseband signal Generation (Generation) to obtain the first radio signal.
In sub-embodiment 11 of embodiment 2, the first modulation symbol sequence sequentially passes through a layer Mapper (LayerMapper), Transform Precoding (Transform Precoding), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and baseband signal Generation (Generation) to obtain the first radio signal.
Example 3
In embodiment 3, there are two modulation symbols in a first modulation symbol sequence mapped to the first and second RUs, respectively, both of which belong to the first time-frequency resource, the first and second RUs occupying the same multi-carrier symbol in the time domain and the first and second RUs being adjacent in the frequency domain.
In sub-embodiment 1 of embodiment 3, the subcarrier spacing of the first RU is equal to the subcarrier spacing of the second RU.
In sub-embodiment 1 of embodiment 3, the subcarrier spacing of the first RU is not equal to the subcarrier spacing of the second RU.
In sub-embodiment 3 of embodiment 3, the first and second RUs being adjacent in the frequency domain means that the frequency minimum of the first RU is equal to the frequency maximum of the second RU; or the first and second RUs being adjacent in the frequency domain means that a frequency maximum of the first RU is equal to a frequency minimum of the second RU.
Example 4
In embodiment 4, a first bit block generates the first modulation symbol sequence through at least a first one of { modulation, layer mapping, precoding }, modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence.
In sub-embodiment 1 of embodiment 4, the first bit block comprises a positive integer number of bits.
In sub-embodiment 2 of embodiment 4, the first bit block is generated by Scrambling (Scrambling) a second bit block, the second bit block comprising an output of one code block after channel coding. As a sub-embodiment of sub-embodiment 2, the code Block is a TB (Transport Block). As another sub-embodiment of sub-embodiment 2, the code Block is a part of a Transport Block (TB).
In sub-embodiment 3 of embodiment 4, the first bit block comprises the output of one code block after channel coding.
In sub-embodiment 4 of embodiment 4, the first bit block is subjected to at least a first one of { Modulation, layer mapping, precoding } to generate the first Modulation symbol sequence, wherein the Modulation is one of { BPSK (Binary Phase Shift Keying), pi/2 BPSK, QPSK (Quadrature Phase Shift Keying), pi/4 QPSK, 16QAM (Quadrature Amplitude Modulation), 64QAM, 256QAM, 1024QAM, 2048QAM }.
In sub-embodiment 5 of embodiment 4, the interleaving refers to an operation of changing the order of elements in a sequence.
In sub-embodiment 6 of embodiment 4, the interleaving of the P first modulation symbol groups to generate the second modulation symbol sequence means: and the P first modulation symbol groups obtain the second modulation symbol sequence by taking the modulation symbol groups as a unit according to a given regular transformation sequence. As a sub-embodiment, the given rule is based on a pseudo-random sequence.
In sub-embodiment 7 of embodiment 4, the interleaving of the P first modulation symbol groups to generate the second modulation symbol sequence means: and selecting one modulation symbol from each of the P first modulation symbol groups to obtain a second modulation symbol group, wherein L second modulation symbol groups sequentially form the second modulation symbol sequence, and L is equal to a positive integer obtained by rounding the quotient of Q and P.
In a sub-embodiment 8 of embodiment 4, the second modulation symbol sequence sequentially passes through a layer Mapper (LayerMapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and an OFDM signal Generation (Generation) to obtain the first radio signal.
In sub-embodiment 9 of embodiment 4, P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
Example 5
Embodiment 5 illustrates a first mapping criterion diagram, as shown in fig. 5. In fig. 5, each rectangular box represents an RU, the horizontal axis represents time, the vertical axis represents frequency, and the dotted arrows represent the order of resource mapping. In embodiment 5, the X mapping criteria include a first mapping criterion, the X mapping criteria include a target mapping criterion, and according to the first mapping criterion, Q modulation symbols of the first modulation symbol sequence are sequentially mapped to Q RUs of the first time-frequency resource according to an order of increasing frequency first and then increasing time, where Q is a positive integer.
In sub-embodiment 1 of embodiment 5, the first mapping criterion is the target mapping criterion.
In sub-embodiment 2 of embodiment 5, the first mapping criterion and the target mapping criterion are two different mapping criteria of the X mapping criteria.
In sub-embodiment 3 of embodiment 5, said first mapping criterion and said target mapping criterion are two different mapping criteria of said X mapping criteria, said X being equal to 2.
In a sub-embodiment 4 of embodiment 5, said first mapping criterion and said target mapping criterion are two different mapping criteria of said X mapping criteria, to which also belongs the presence of a mapping criterion different from both said first mapping criterion and said target mapping criterion.
Example 6
Embodiment 6 is a block diagram illustrating a processing apparatus in a user equipment, as shown in fig. 6. In fig. 6, the user equipment processing apparatus 100 is mainly composed of a first processing module 101 and a second processing module 102.
In embodiment 6, the first processing module 101 is used to receive a first signaling, and the second processing module 102 is used to transmit a first wireless signal on a first time-frequency resource; or the second processing module 102 is used to receive the first wireless signal on the first time-frequency resource. The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2. The first processing module 101 is further configured to receive a second signaling, where the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
In sub-embodiment 1 of embodiment 6, according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multicarrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced.
In sub-embodiment 2 of embodiment 6, a first block of bits is subjected to at least a first one of { modulation, layer mapping, precoding } to generate the first sequence of modulation symbols, the target mapping criterion comprising: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
In a sub-embodiment of sub-embodiment 2, P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
In sub-embodiment 3 of embodiment 6, the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to an order of increasing frequency and increasing time according to the first mapping criterion.
In sub-embodiment 4 of embodiment 6, the second signaling includes DCI (Downlink control information).
In sub-embodiment 5 of embodiment 6, the second signaling is physical layer signaling, and the second signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
Example 7
Embodiment 7 is a block diagram illustrating a processing apparatus in a base station device, as shown in fig. 7. In fig. 7, the base station device processing apparatus 200 is mainly composed of a third processing module 201 and a fourth processing module 202.
In embodiment 7, the third processing module 201 is used to transmit the first signaling, and the fourth processing module 202 is used to transmit the first wireless signal on the first time-frequency resource; or the fourth processing module 202 is used to receive the first wireless signal on the first time-frequency resource. The first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer. A first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence in turn being composed of Q modulation symbols, the Q modulation symbols being mapped to the Q RUs, respectively, according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2. The third processing module 201 is further configured to send a second signaling, where the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
In sub-embodiment 1 of embodiment 7, according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multicarrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced.
In sub-embodiment 2 of embodiment 7, a first block of bits is subjected to at least a first one of { modulation, layer mapping, precoding } to generate the first sequence of modulation symbols, the target mapping criterion comprising: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
In a sub-embodiment of sub-embodiment 2, P is a positive integer related to at least one of { the number of subcarriers occupied by the first time-frequency resource, the number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
In sub-embodiment 3 of embodiment 7, the X mapping criteria include a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion, where the Q modulation symbols are sequentially mapped to the Q RUs according to an order of increasing frequency and then increasing time.
In sub-embodiment 4 of embodiment 7, the second signaling includes DCI (Downlink control information).
In sub-embodiment 5 of embodiment 7, the second signaling is physical layer signaling, and the second signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
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 above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the invention includes but is not limited to a mobile phone, a tablet computer, a notebook, a network card, a low-power consumption device, an MTC device, an NB-IoT device, a vehicle-mounted communication device and other wireless communication devices. The base station or network side device in the present invention 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 invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (12)
1. A method in a UE supporting resource mapping adjustment, comprising the steps of:
-step a. receiving a first signalling;
-step b. receiving a first wireless signal on a first time-frequency resource; or transmitting a first wireless signal on a first time-frequency resource;
the first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer; a first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence being sequentially composed of Q modulation symbols, the Q modulation symbols being respectively mapped to the Q RUs according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2; according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multi-carrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced; the X mapping criteria comprise a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion and the sequence of increasing frequency and increasing time.
2. The method of claim 1, wherein a first block of bits is subjected to at least a first one of { modulation, layer mapping, precoding } to generate the first sequence of modulation symbols, and wherein the target mapping criterion comprises: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
3. The method of claim 2, wherein P is a positive integer related to at least one of { number of subcarriers occupied by the first time-frequency resource, number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
4. The method according to any one of claims 1 to 3, wherein the step A further comprises the steps of:
-step A0. receiving the second signaling;
wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
5. A method in a base station supporting resource mapping adjustment, comprising the steps of:
-step a. sending a first signaling;
-step b. transmitting a first wireless signal on a first time-frequency resource; or receiving a first wireless signal on a first time-frequency resource;
the first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer; a first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence being sequentially composed of Q modulation symbols, the Q modulation symbols being respectively mapped to the Q RUs according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2; according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multi-carrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced; the X mapping criteria comprise a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion and the sequence of increasing frequency and increasing time.
6. The method of claim 5, wherein a first block of bits is subjected to at least a first one of { modulation, layer mapping, precoding } to generate the first sequence of modulation symbols, and wherein the target mapping criterion comprises: the modulation symbols in the first modulation symbol sequence are sequentially divided into P first modulation symbol groups, and the P first modulation symbol groups are interleaved to generate a second modulation symbol sequence; and the modulation symbols in the second modulation symbol sequence are sequentially mapped to the Q RUs according to the sequence of increasing frequency and increasing time.
7. The method of claim 6, wherein P is a positive integer related to at least one of { number of subcarriers occupied by the first time-frequency resource, number of multicarrier symbols occupied by the first time-frequency resource }; or P is a configurable positive integer.
8. The method according to any one of claims 5 to 7, wherein the step A further comprises the steps of:
step A0. sending a second signaling;
wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
9. A user equipment supporting resource mapping adjustment, comprising the following modules:
-a first processing module: for receiving a first signaling;
-a second processing module: for receiving a first wireless signal on a first time-frequency resource; or for transmitting a first wireless signal on a first time-frequency resource;
the first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer; a first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence being sequentially composed of Q modulation symbols, the Q modulation symbols being respectively mapped to the Q RUs according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2; according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multi-carrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced; the X mapping criteria comprise a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion and the sequence of increasing frequency and increasing time.
10. The UE of claim 9, wherein the first processing module is further configured to receive a second signaling, and wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
11. A base station device supporting resource mapping adjustment comprises the following modules:
-a third processing module: for transmitting a first signaling;
-a fourth processing module: for transmitting a first wireless signal on a first time-frequency resource; or for receiving a first wireless signal on a first time-frequency resource;
the first time-frequency resource consists of Q RUs, the RUs occupy one subcarrier in a frequency domain and occupy the duration of one multicarrier symbol in a time domain, and Q is a positive integer; a first modulation symbol sequence is used for generating the first wireless signal, the first modulation symbol sequence being sequentially composed of Q modulation symbols, the Q modulation symbols being respectively mapped to the Q RUs according to a target mapping criterion, the first signaling being used for determining the target mapping criterion among X mapping criteria, the X being an integer greater than or equal to 2; according to the target mapping criterion, there are two modulation symbols in the first modulation symbol sequence mapped to a first RU and a second RU, respectively, both belonging to the Q RUs, the first RU and the second RU occupying the same multi-carrier symbol in the time domain and the first RU and the second RU being adjacent in the frequency domain, the positions of the modulation symbols mapped to the first RU and the modulation symbols mapped to the second RU in the first modulation symbol sequence being spaced; the X mapping criteria comprise a first mapping criterion, and the Q modulation symbols are sequentially mapped to the Q RUs according to the first mapping criterion and the sequence of increasing frequency and increasing time.
12. The base station device of claim 11, wherein the third processing module is further configured to send a second signaling, and wherein the second signaling is used to determine at least one of { the first time-frequency resource, the modulation scheme of the first modulation symbol sequence }.
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