CN107659373B - Method and device in wireless communication - Google Patents
Method and device in wireless communication Download PDFInfo
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- CN107659373B CN107659373B CN201610585632.8A CN201610585632A CN107659373B CN 107659373 B CN107659373 B CN 107659373B CN 201610585632 A CN201610585632 A CN 201610585632A CN 107659373 B CN107659373 B CN 107659373B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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Abstract
The invention discloses a method and a device in wireless communication. The UE firstly transmits a first wireless signal in a first time interval; a second wireless signal is then received in a second time interval. Wherein the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly. The invention can improve the transmission efficiency of the channel information and reduce the overhead of the downlink signaling.
Description
Technical Field
The present application relates to transmission schemes in wireless communication systems, and more particularly, to methods and apparatus for transmission of channel information.
Background
The issue of reducing the delay of the LTE Network is discussed in 3GPP (3rd Generation Partner Project) RAN (radio access Network) #63 times overall meeting. In LTE (Long Term Evolution), a TTI (Transmission Time Interval) or a subframe or a prb (physical Resource block) Pair (Pair) corresponds to one ms (milli-second) in Time. One LTE subframe includes two Time slots (Time slots), a first Slot and a second Slot, respectively. A PDCCH (Physical Downlink Control Channel) occupies first R OFDM (Orthogonal Frequency Division Multiplexing) symbols of a PRB pair, where R is a positive integer less than 5 and is configured by a PCFICH (Physical Control Format Indicator Channel). In order to reduce the transmission delay, the concept of stti (short tti) is proposed, i.e. the duration of a physical channel corresponding to a TB (transport block) is less than 1 ms.
In a conventional cellular network system, two types of CSI (Channel Status Information) are supported, i.e., a-CSI (Aperiodic CSI) and P-CSI (Periodic CSI). The a-CSI is transmitted on a PUSCH (Physical Uplink Shared Channel), and the P-CSI is transmitted on a PUCCH (Physical Uplink Control Channel). The A-CSI and the P-CSI both belong to physical layer information and have the following characteristics:
HARQ-ACK is not supported, and a higher coding redundancy is used to ensure that BLER (BLock Error Rate) can meet the performance requirement.
Is completely handled by the physical layer and there are no corresponding transport channels and logical channels.
Massive MIMO becomes a key technology in next-generation mobile communication. Accordingly, air interface resources required for CSI feedback may increase significantly, which becomes a serious challenge.
Disclosure of Invention
The inventor finds that the conventional design scheme of the CSI utilizes two characteristics of the CSI:
higher requirements on transmission delay and therefore HARQ is not supported;
a single transmission includes a small number of information bits, so that sending downlink scheduling signaling purely for CSI is avoided as much as possible to reduce downlink redundancy (Overhead).
The inventor finds out through further research that the two characteristics may change in the next generation mobile communication system:
the low delay transmission technique can greatly reduce HARQ RTT (Round Trip Time, loop Time);
for Massive MIMO, the number of information bits included in a single transmission may be large.
The present application provides a solution to the problem of CSI feedback. 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. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the original intention of the present application is for Massive MIMO, the present application is also applicable to other low-latency wireless communication scenarios, such as the legacy MIMO scenario.
The application discloses a method in a UE supporting low-delay wireless communication, which comprises the following steps:
-step a. transmitting a first wireless signal in a first time interval;
-step b. receiving a second radio signal in a second time interval.
Wherein the first wireless signal includes first information. The first information is used to determine first Channel information, which includes one or more of { a first antenna port group, a first Rank Indicator (Rank Indicator), a first Channel parameter matrix, and a first CQI (Channel Quality Indicator) }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly.
In conventional wireless communication, channel information is fed back through physical layer signaling. In the above method, the channel information can be fed back through high-layer signaling.
As an embodiment, the above method includes the following advantages:
the channel information transmission can utilize HARQ, thereby improving the transmission efficiency of the channel information.
Time-frequency resources occupied by the channel information can be dynamically scheduled, so that the transmission efficiency is further improved; or the overhead of downlink signaling can be reduced by combining a Grant Free (Grant Free) sending mode.
As an embodiment, the first information is MAC (Medium Access Control) layer signaling.
As an embodiment, the first information is RRC (Radio Resource Control) layer signaling.
As an embodiment, the first wireless signal is transmitted on a physical layer data channel that can be used to transmit at least the former of { physical layer data, physical layer signaling }.
As an embodiment, the first channel parameter matrix includes P row vectors, the row vectors include Q elements, and P and Q are positive integers, respectively. As an embodiment of the present embodiment, the elements in the first channel parameter matrix are used to determine at least the former of { phase, amplitude } of the corresponding (transmit antenna port to receive antenna) radio channel.
As an embodiment, the antenna port corresponds to one antenna.
As an embodiment, the antenna port is formed by a plurality of antennas through antenna virtualization.
As an embodiment, RSs transmitted by any two antenna ports in the first antenna port group are orthogonal on time-frequency resources.
As an embodiment, the first information explicitly indicates the first channel information.
As an embodiment, the first information implicitly indicates the first channel information.
As an embodiment, the duration of the first time interval is less than 1 millisecond.
As an embodiment, the duration of the first time interval is less than or equal to 0.5 milliseconds.
As an embodiment, the first time interval includes 2 OFDM symbols.
As an embodiment, the first time interval includes 4 OFDM symbols.
For one embodiment, the first wireless signal occupies a portion of time domain resources in the first time interval.
As one embodiment, the first wireless signal occupies all time domain resources in the first time interval.
For one embodiment, the first wireless signal further includes physical layer data.
As an embodiment, the duration of the second time interval is not equal to the duration of the first time interval.
As one embodiment, the second wireless signal indicates that the first wireless signal is correctly decoded.
As one embodiment, the first information includes the first channel information.
As an embodiment, the first channel information is indicated by a pmi (precoding matrix indicator) in the first information.
As an embodiment, the first Channel information is a Channel correlation matrix (Channel covariance matrix), and the first information includes quantized values of all or part of elements in the first Channel information. As a sub-embodiment of this embodiment, each element in the channel parameter matrix is a complex number.
As an embodiment, the first channel information is a channel parameter matrix, and each element in the channel parameter matrix corresponds to a channel impulse response from one transmit antenna port to one receive antenna. The first information includes quantized values of all elements or a part of elements in the first channel information. As a sub-embodiment of this embodiment, each element in the channel parameter matrix is a complex number.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-a step a100. receiving a third radio signal in a third time interval;
-a step a101. transmitting a fourth radio signal in a fourth time interval.
The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a transmission request, one or more corresponding serving cells, one or more corresponding CSI processes (processes), and a type of channel information included in the CSI processes }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
Unlike a-CSI, in the above aspect, higher layer signaling is used to trigger the transmission of the first information. The above aspect reduces redundancy (Overhead) of the DCI.
As an embodiment, the request to send is indicated by 1 information bit. If the information bit is 1, the sending of the first information is triggered; if the information bit is 0, the sending of the first information is not triggered.
As an embodiment, the configuration parameter is indicated by R information bits, the R information bits corresponding to V states, the R being an integer greater than 1, the V being the power of R of 2. One of the V states indicates not to trigger the first information, V1 of the V states indicates to trigger the first information, the V1 is a positive integer less than the V. Is used for the determination.
As an example of the above embodiments, the V1 is less than the V by 1.
As an embodiment of the foregoing embodiment, the V1 statuses respectively indicate V1 serving cell sets, each serving cell set includes 1 or more serving cells, and the first information corresponds to one serving cell set of the V1 serving cell sets.
As an embodiment of the foregoing embodiment, the V1 states respectively indicate V1 CSI processes (processes), and the first information corresponds to one CSI Process of the V1 CSI processes.
As an embodiment, the third wireless signal also carries higher layer data.
As an embodiment, the fourth wireless signal includes 1 information bit, and the two candidate states (state 0 and state 1) corresponding to the information bit respectively indicate that the third wireless signal is correctly decoded and the third wireless signal is incorrectly decoded.
As an embodiment, the fourth wireless signal is transmitted on sPUCCH.
As an embodiment, the fourth wireless signal is transmitted on the sPUSCH.
As an embodiment, the first signaling is MAC layer signaling.
As an embodiment, the first signaling is RRC layer signaling.
As an embodiment, the first signaling is RLC (Radio Link Control) layer signaling.
As an embodiment, the category of the Channel information includes one or more of { the first antenna port group, the first Rank Indicator (Rank Indicator), the first Channel parameter matrix, and the first CQI (Channel quality Indicator) }.
Specifically, according to an aspect of the present application, it is characterized in that { at least one of a time domain position of a CSI (channel state Information) Reference Resource (Reference Resource) of the first Information } is related to the fourth time interval.
The above aspects avoid uncertainty of a time-domain position of a CSI reference resource of the first information or uncertainty of the first time interval, since a time at which the first signaling is correctly decoded is uncertain. Furthermore, the above method does not add additional signaling redundancy.
As an embodiment, the first time interval and the fourth time interval are of different duration.
As an embodiment, the starting time of the first time interval is after the ending time of the fourth time interval, and the time length between the first time interval and the fourth time interval is determined by default (i.e. no explicit configuration of downlink signaling is required).
As an embodiment, a time domain position of the fourth time interval is used for determining a time domain position of a CSI reference resource of the first information.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
step A0. receives the second signaling.
The second signaling is used to determine configuration information of the first wireless signal, where the configuration information includes at least one of { occupied time-frequency resource, MCS (Modulation and Coding Status, Modulation and Coding state), RV (Redundancy Version ), NDI (New Data Indicator), HARQ (hybrid automatic Repeat reQuest) Process Number (Process Number) }.
In the foregoing aspect, the network side device may dynamically adjust the configuration information of the first wireless signal to make more full use of the channel capacity.
As an embodiment, the second signaling is physical layer signaling.
As an embodiment, the second signaling is uplink Grant (Grant) DCI (Downlink control information).
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-step a1. self-determining to transmit the first wireless signal in the first time interval.
As an embodiment, the above aspect has the advantage of saving the downlink signaling required for scheduling the first radio signal.
As an embodiment, the UE determines the location of the time-frequency resource occupied by the first wireless signal in a first resource pool, where the first resource pool includes the first time interval in the time domain. As an embodiment, the first resource pool is configured by higher layer signaling. For one embodiment, the first resource pool includes the entire system bandwidth in the frequency domain.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
step a10. transmitting a fifth radio signal in a fifth time interval.
Wherein the fifth time interval precedes the first time interval, the fifth wireless signal comprising second information. The second information and the first information are used to determine second channel information. The calculation of the first channel information is conditional on the second channel information. The first channel information comprises one or more of { the first channel parameter matrix, the first CQI }, and the second channel information comprises one or more of { the first antenna port group, the first rank indication }.
As an embodiment, the end time of the fifth time interval is before the start time of the first time interval.
As an embodiment, the duration of the fifth time interval is equal to the duration of the first time interval.
As an embodiment, the fifth wireless signal occupies a portion of time domain resources in the fifth time interval.
As an embodiment, the fifth wireless signal occupies all time domain resources in the fifth time interval.
As an embodiment, the fifth wireless signal is transmitted on a physical layer control channel. As an example, the physical layer control channel can only be used for transmitting physical layer signaling. As an embodiment, the Physical layer Control Channel is sPUCCH (short Physical Uplink Control Channel).
In the above embodiment, the first information of dynamic scheduling and the second information of semi-static scheduling can be jointly used. Feedback (feedback) redundancy is reduced compared to a-CSI.
As an embodiment, the fifth wireless signal is transmitted on a physical layer data channel. As an embodiment, the physical layer data channel can be used to transmit at least the former of { physical layer data, physical layer signaling }. As an embodiment, the Physical layer data Channel is a short Physical Uplink Shared Channel (sPUSCH).
As one embodiment, the fifth wireless signal is transmitted on a physical layer data channel and the UE has received an ACK associated with the fifth wireless signal.
In the above embodiment, the first information dynamically scheduled and the second information dynamically scheduled can be used jointly. Feedback (feedback) redundancy is reduced compared to a-CSI.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-a step a11. determining said first information by measurement, said first information being passed to an upper layer.
-a step a12. receiving a first block of bits from an upper layer, the first block of bits comprising the first information
Wherein the first block of bits is used by the UE to determine the first wireless signal, the first block of bits comprising a positive integer number of bits.
As an embodiment, the output of the channel encoder corresponding to the first bit block is a second bit block, and the first wireless signal includes modulation symbols corresponding to the second bit block.
The application discloses a method in a base station supporting low-delay wireless communication, which comprises the following steps:
-step a. receiving a first wireless signal in a first time interval.
-step b. transmitting a second radio signal in a second time interval.
Wherein the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-step a100. transmitting a third radio signal in a third time interval;
-a step a101. receiving a fourth radio signal in a fourth time interval.
The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
Specifically, according to an aspect of the present application, at least one of { the time domain position of the CSI reference resource of the first information, the first time interval } is related to the fourth time interval.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
step A0. sends the second signaling.
Wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-a step a1. performing blind detection in the first time interval to determine the first wireless signal.
As one embodiment, the blind detection refers to the base station not determining whether the first wireless signal is present in the first time interval before decoding the first wireless signal.
As an embodiment, the blind detection means that the base station does not determine the time-frequency resources occupied by the first wireless signal before decoding the first wireless signal.
As one embodiment, the performing blind detection refers to the base station receiving and decoding in a first resource pool to determine whether the first wireless signal is present.
As an embodiment, the sender of the first wireless signal determines the position of the time-frequency resource occupied by the first wireless signal in a first resource pool by itself, and the first resource pool includes the first time interval in the time domain.
As a sub-embodiment of the above two embodiments, the first resource pool is configured by higher layer signaling.
As a sub-embodiment of the two embodiments described above, the first resource pool includes the entire system bandwidth in the frequency domain.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-a step a10. receiving a fifth radio signal in a fifth time interval.
Wherein the fifth time interval precedes the first time interval, the fifth wireless signal comprising second information. The second information and the first information are used to determine second channel information. The calculation of the first channel information is conditional on the second channel information. The first channel information comprises one or more of { the first channel parameter matrix, the first CQI }, and the second channel information comprises one or more of { the first antenna port group, the first rank indication }.
As an embodiment, the fifth wireless signal is transmitted on a physical layer control channel.
As one embodiment, the fifth wireless signal is transmitted on a physical layer data channel and the base station has sent an ACK associated with the fifth wireless signal.
Specifically, according to an aspect of the present application, the step a further includes the steps of:
-a step a11. passing a first block of bits to an upper layer, said first block of bits comprising said first information
-step a12. receiving the first information from the upper layer
Wherein the first wireless signal is used by the base station to determine the first bit block, the first bit block comprising a positive integer number of bits.
The application discloses a user equipment supporting low-delay wireless communication, which comprises the following modules:
a first processing module: for transmitting a first wireless signal in a first time interval;
a first receiving module: for receiving a second wireless signal in a second time interval.
Wherein the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly.
As an embodiment, the user equipment is characterized by further comprising the following modules:
a second receiving module: for receiving a third wireless signal in a third time interval;
a second sending module: for transmitting a fourth wireless signal in a fourth time interval.
The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
As an embodiment of the above-mentioned embodiments, at least one of { the time domain position of the CSI reference resource of the first information, the first time interval } is related to the fourth time interval.
As an embodiment, the above user equipment is characterized in that the first processing module is further configured to transmit a fifth wireless signal in a fifth time interval.
Wherein the fifth time interval precedes the first time interval, the fifth wireless signal comprising second information. The second information and the first information are used to determine second channel information. The calculation of the first channel information is conditional on the second channel information. The first channel information comprises one or more of { the first channel parameter matrix, the first CQI }, and the second channel information comprises one or more of { the first antenna port group, the first rank indication }.
As an embodiment, the above user equipment is characterized in that the first processing module is further configured to receive a second signaling. Wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As an embodiment, the user equipment as above is characterized in that the first processing module is further configured to determine by itself to transmit the first wireless signal in the first time interval.
As an embodiment, the user equipment is characterized in that the first processing module is further configured to:
determining said first information by measurement, said first information being passed to an upper layer.
Receiving a first block of bits from an upper layer, the first block of bits comprising the first information, wherein the first block of bits is used by the UE to determine the first wireless signal, the first block of bits comprising a positive integer number of bits.
The application discloses a base station device supporting low-delay wireless communication, which comprises the following modules:
a second processing module: for receiving a first wireless signal in a first time interval.
A first sending module: for transmitting a second wireless signal in a second time interval.
Wherein the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly.
As an embodiment, the base station device is characterized by further comprising the following modules:
a third sending module: for transmitting a third wireless signal in a third time interval;
a third receiving module: for receiving a fourth wireless signal in a fourth time interval.
The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
As an embodiment of the above-mentioned embodiments, at least one of { the time domain position of the CSI reference resource of the first information, the first time interval } is related to the fourth time interval.
As an embodiment, the base station device is characterized in that the second processing module is further configured to receive a fifth wireless signal in a fifth time interval.
Wherein the fifth time interval precedes the first time interval, the fifth wireless signal comprising second information. The second information and the first information are used to determine second channel information. The calculation of the first channel information is conditional on the second channel information. The first channel information comprises one or more of { the first channel parameter matrix, the first CQI }, and the second channel information comprises one or more of { the first antenna port group, the first rank indication }.
As an embodiment, the base station device is characterized in that the second processing module is further configured to send a second signaling. Wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As an embodiment, the base station device is characterized in that the second processing module is further configured to perform blind detection in the first time interval to determine the first wireless signal.
As an embodiment, the base station device is characterized in that the second processing module is further configured to:
passing a first block of bits to an upper layer, the first block of bits comprising the first information
Receiving the first information from the upper layer
Wherein the first wireless signal is used by the base station to determine the first bit block, the first bit block comprising a positive integer number of bits.
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 a first information feedback according to an embodiment of the application;
FIG. 2 shows a schematic diagram of first information being transferred between a physical layer and an upper layer according to an embodiment of the present application;
FIG. 3 shows a schematic diagram of a first time interval, a third time interval and a fourth time interval according to an embodiment of the present application;
FIG. 4 shows a schematic diagram of the timing of a fifth wireless signal and a first wireless signal according to one embodiment of the present application;
FIG. 5 shows a block diagram of a processing device in a UE according to an embodiment of the present 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 first information feedback, as shown in fig. 1. In fig. 1, base station N1 is a serving cell maintaining base station for UE U2. In fig. 1, the step in block F0 and the step in block F1 are optional, respectively.
For theBase station N1Transmitting a third wireless signal in a third time interval in step S11; receiving a fourth wireless signal in a fourth time interval in step S12; transmitting a second signaling in step S130; receiving a first wireless signal in a first time interval in step S13; in step S14, a second wireless signal is transmitted in a second time interval.
For theUE U2Receiving a third wireless signal in a third time interval in step S21; transmitting a fourth wireless signal in a fourth time interval in step S22; receiving a second signaling in step S230; transmitting a first wireless signal in a first time interval in step S23; the second wireless signal is received in a second time interval in step S24.
In embodiment 1, the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly. The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least the transmission request in { transmission request, corresponding one or more serving cells, corresponding one or more CSI processes }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded. The second signaling is used to determine configuration information of the first wireless signal, where the configuration information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
As sub-embodiment 1 of embodiment 1, the first time interval is a time interval occupied by an uplink physical layer data channel that is scheduled earliest by the UE U2 after the target time. The target time is a time delayed by a given length of time after the expiration time of the fourth time interval. As an embodiment, the given length of time is determined by default (i.e. without explicit indication of downlink signaling). As an embodiment, the given length of time is configurable. As an embodiment, the uplink physical layer data channel can be used for at least the former of { uplink physical layer data, uplink physical layer signaling }. As an embodiment, the uplink physical layer data channel is a sPUSCH.
As sub-embodiment 2 of embodiment 1, the fourth time interval is used to determine a time domain position of a CSI reference resource of the first information. As an embodiment, the time domain position of the CSI reference resource of the first information is 1 st subframe after the subframe to which the fourth time interval belongs. As an embodiment, the time-domain position of the CSI reference resource of the first information is a first subframe that is subsequent to the subframe to which the fourth time interval belongs and that can be used for downlink transmission.
As sub-example 3 of example 1, the step in block F1 is not present. The UE U2 self-determines in step S23 to send the first wireless signal in the first time interval. Base station N1 performs blind detection in the first time interval to determine the first wireless signal in step S13.
Example 2
Embodiment 2 illustrates a schematic diagram of first information transferred between a physical layer and an upper layer, as shown in fig. 2. In fig. 2, base station N3 is the serving cell maintaining base station for UE U4.
For theUE U4In step S101, the physical layer determines first information through measurement, and transmits the first information to an upper layer; receiving, by a physical layer, a first bit block including the first information from an upper layer in step S102; in step S103, a first wireless signal is sent, where the first wireless signal carries the first bit block.
For theBase station N3Receiving the first wireless signal in step S103, and determining the first bit block; the physical layer transfers the first bit block to an upper layer in step S104; the physical layer receives the first information from an upper layer in step S105.
In embodiment 2, the first information is used to determine first channel information, and the first channel information includes one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports.
As sub embodiment 1 of embodiment 2, the first bit Block includes a Transport Block (TB).
As a sub-embodiment 2 of embodiment 2, the first bit block further includes at least one of { upper layer data, upper layer signaling } in addition to the first information.
As sub-embodiment 3 of embodiment 2, the upper layer is a MAC layer.
As sub-embodiment 4 of embodiment 2, the upper layer is an RRC layer.
As sub-example 5 of example 2, the upper layer is the RLC layer.
Example 3
Example 3 illustrates a schematic diagram of the first time interval, the third time interval and the fourth time interval, as shown in fig. 3. In fig. 3, the squares filled with diagonal lines are the third time interval, the squares filled with reverse diagonal lines are the fourth time interval, and the squares filled with cross lines are the first time interval.
In embodiment 3, the first time interval is subsequent to the fourth time interval. The fourth time interval is used to determine the first time interval. The time length from the ending time of the third time interval to the starting time of the fourth time interval is a first delay, and the time length from the ending time of the fourth time interval to the starting time of the first time interval is a second delay.
As sub-embodiment 1 of embodiment 3, the first time interval is a time interval occupied by an uplink physical layer data channel scheduled earliest after the target time. The target time is a time delayed by a time equal to a second delay after the expiration time of the fourth time interval. As an embodiment, the second delay is determined by default (i.e. not explicitly indicated by downlink signalling). For one embodiment, the second delay is configurable.
As a sub-embodiment 2 of embodiment 3, the first time interval is a time interval occupied by an earliest uplink physical layer data channel after the target time. The target time is a time delayed by a time equal to a second delay after the expiration time of the fourth time interval.
As sub-embodiment 3 of embodiment 3, the first delay is related to a time length of the third time interval.
As a sub-embodiment 4 of embodiment 3, the duration of the third time interval and the duration of the fourth time interval are different.
As a sub-embodiment 5 of embodiment 3, the duration of the fourth time interval is different from the duration of the first time interval.
Example 4
Embodiment 4 illustrates a schematic diagram of the timing of the fifth wireless signal and the first wireless signal, as shown in fig. 4. In fig. 4, the diagonal filled squares are the fifth time intervals, the reverse diagonal filled squares are the first time intervals, the cross filled squares are the unavailable time intervals, and the heavy line boxes are the optional time intervals.
In embodiment 4, the fifth wireless signal is transmitted in the fifth time interval.
As sub-embodiment 1 of embodiment 4, the fifth wireless signal is transmitted on a physical layer data channel and the HARQ-ACK associated with the fifth wireless signal is transmitted in the selectable time interval. The calculation of the first channel information transmitted in the second time window is conditioned on the second channel information in the fifth radio signal. The first time interval in this application belongs to the first time window.
As sub-embodiment 2 of embodiment 4, the fifth radio signal is transmitted on a physical layer control channel, and the calculation of the first channel information transmitted in the first time window is conditioned on the second channel information in the fifth radio signal. The first time interval in this application belongs to the second time window.
As sub-embodiment 3 of embodiment 4, the time length of the first time window is configurable.
As sub-embodiment 4 of embodiment 4, the calculation of the first channel information conditioned on the second channel information means that: the first channel information is directed to a downlink wireless signal sent by the base station after adopting the second channel information.
Example 5
Embodiment 5 illustrates a block diagram of a processing device in a UE, as shown in fig. 5. In fig. 5, the UE processing apparatus 200 mainly comprises a second receiving module 203, a second sending module 204, a first processing module 201 and a first receiving module 202, wherein the modules identified in block F7 are optional.
The second receiving module 203 is configured to receive a third wireless signal in a third time interval; the second sending module 204 is configured to send a fourth wireless signal in a fourth time interval; the first processing module 201 is configured to transmit a first wireless signal in a first time interval; the first receiving module 202 is configured to receive a second wireless signal in a second time interval
In embodiment 5, the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly. The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded. { time-domain position of CSI reference resource of the first information, the first time interval }, at least the latter of which is related to the fourth time interval.
As sub-embodiment 1 of embodiment 5, the UE determines itself to transmit the first wireless signal in the first time interval.
As sub-embodiment 2 of embodiment 5, the durations of { the first time interval, the second time interval, the third time interval, the fourth time interval } are all less than 1 millisecond.
Example 6
Embodiment 6 is a block diagram illustrating a processing apparatus in a base station, as shown in fig. 6. In fig. 6, the base station processing apparatus 300 mainly comprises a third sending module 303, a third receiving module 304, a second processing module 301 and a first sending module 302, wherein the modules identified in block F8 are optional.
The third transmitting module 303 is configured to transmit a third wireless signal in a third time interval; the third receiving module 304 is configured to receive a fourth wireless signal in a fourth time interval; the second processing module 301 is configured to receive a first wireless signal in a first time interval; the first transmitting module 302 is configured to transmit a second wireless signal in a second time interval.
In embodiment 6, the first wireless signal includes first information. The first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }. The first antenna port group comprises a positive integer number of antenna ports. The second wireless signal is used to determine whether the first information is decoded correctly. The third wireless signal carries a first signaling, where the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }. The fourth wireless signal is used to determine that the third wireless signal is correctly decoded. The first time interval and the fourth time interval are related.
As sub-embodiment 1 of embodiment 6, said second processing module 301 is further adapted to
Determining a first bit block based on the first radio signal, and transferring the first bit block to an upper layer, the first bit block comprising the first information
Receiving the first information from the upper layer
Wherein the first bit block comprises a positive integer number of bits.
As sub-embodiment 2 of embodiment 6, the durations of { the first time interval, the second time interval, the third time interval, the fourth time interval } are all less than 1 millisecond.
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 present application includes, but is not limited to, a mobile phone, a tablet, a notebook, a network card, a low-cost terminal, an NB-IoT terminal, an eMTC terminal, a vehicle-mounted communication device, and other wireless communication devices. The base station or network side device 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 (22)
1. A method in a user equipment supporting low-delay wireless communication, comprising the steps of:
-a step a10. transmitting a fifth radio signal in a fifth time interval;
-step a. transmitting a first wireless signal in a first time interval;
-step b. receiving a second radio signal in a second time interval;
wherein the first wireless signal comprises first information; the first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }; the first antenna port group comprises a positive integer of antenna ports; the second wireless signal is used to determine whether the first information is correctly decoded; the first information is MAC layer signaling, or the first information is RRC layer signaling; the fifth time interval is prior to the first time interval, the fifth wireless signal comprising second information; the second information and the first information are used to determine second channel information; the first channel information is directed at a downlink wireless signal sent by the base station after adopting the second channel information; the second channel information comprises one or more of { the first antenna port group, the first rank indication }; the fifth wireless signal is transmitted on a physical layer control channel.
2. The method of claim 1, wherein step a further comprises the steps of:
-a step a100. receiving a third radio signal in a third time interval;
-a step a101. transmitting a fourth radio signal in a fourth time interval;
wherein the third wireless signal carries a first signaling, the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }; the fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
3. The method of claim 2, wherein at least one of { the time domain location of the CSI reference resource for the first information, the first time interval } is related to the fourth time interval.
4. The method according to any one of claims 1-3, wherein said step A further comprises the steps of:
-step A0. receiving the second signaling;
wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
5. The method according to any one of claims 1-3, wherein said step A further comprises the steps of:
-step a1. self-determining to transmit the first wireless signal in the first time interval.
6. The method according to any one of claims 1-3, wherein said step A further comprises the steps of:
-a step a11. determining said first information by measurement, passing said first information to an upper layer;
-a step a12. receiving a first block of bits from an upper layer, the first block of bits comprising the first information;
wherein the first block of bits is used by the user equipment to determine the first radio signal, the first block of bits comprising a positive integer number of bits.
7. A method in a base station supporting low-delay wireless communication, comprising the steps of:
-a step a10. receiving a fifth radio signal in a fifth time interval;
-a. receiving a first wireless signal in a first time interval;
-step b. transmitting a second radio signal in a second time interval;
wherein the first wireless signal comprises first information; the first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }; the first antenna port group comprises a positive integer of antenna ports; the second wireless signal is used to determine whether the first information is correctly decoded; the first information is MAC layer signaling, or the first information is RRC layer signaling; the fifth time interval is prior to the first time interval, the fifth wireless signal comprising second information; the second information and the first information are used to determine second channel information; the first channel information is directed at a downlink wireless signal sent by the base station after adopting the second channel information; the second channel information comprises one or more of { the first antenna port group, the first rank indication }; the fifth wireless signal is transmitted on a physical layer control channel.
8. The method of claim 7, wherein step a further comprises the steps of:
-step a100. transmitting a third radio signal in a third time interval;
-a step a101. receiving a fourth radio signal in a fourth time interval;
wherein the third wireless signal carries a first signaling, the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }; the fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
9. The method of claim 8, wherein at least one of { the time domain location of the CSI reference resource for the first information, the first time interval } is related to the fourth time interval.
10. The method according to any one of claims 7-9, wherein step a further comprises the steps of:
step A0. sending a second signaling;
wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
11. The method according to any one of claims 7-9, wherein step a further comprises the steps of:
-a step a1. performing blind detection in the first time interval to determine the first wireless signal.
12. The method according to any one of claims 7-9, wherein step a further comprises the steps of:
-a step a11. passing a first block of bits to an upper layer, the first block of bits comprising the first information;
-a step a12. receiving first information from an upper layer;
wherein the first wireless signal is used by the base station to determine the first bit block, the first bit block comprising a positive integer number of bits.
13. A user equipment supporting low-delay wireless communication, comprising:
a first processing module: for transmitting a fifth wireless signal in a fifth time interval; transmitting a first wireless signal in a first time interval;
a first receiving module: for receiving a second wireless signal in a second time interval;
wherein the first wireless signal comprises first information; the first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }; the first antenna port group comprises a positive integer of antenna ports; the second wireless signal is used to determine whether the first information is correctly decoded; the first information is MAC layer signaling, or the first information is RRC layer signaling; the fifth time interval is prior to the first time interval, the fifth wireless signal comprising second information; the second information and the first information are used to determine second channel information; the first channel information is directed at a downlink wireless signal sent by the base station after adopting the second channel information; the second channel information comprises one or more of { the first antenna port group, the first rank indication }; the fifth wireless signal is transmitted on a physical layer control channel.
14. The user equipment of claim 13, further comprising the following modules:
a second receiving module: for receiving a third wireless signal in a third time interval;
a second sending module: for transmitting a fourth wireless signal in a fourth time interval;
wherein the third wireless signal carries a first signaling, the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }; the fourth wireless signal is used to determine that the third wireless signal is correctly decoded.
15. The UE of claim 14, wherein at least one of { the time domain location of the CSI reference resource for the first information, the first time interval } relates to the fourth time interval.
16. The user equipment as claimed in any of claims 13-15, wherein the first processing module is further configured to receive a second signaling; wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
17. The user equipment according to any of claims 13-15, wherein the first processing module is further configured to determine itself to transmit the first wireless signal in the first time interval.
18. The user equipment of any of claims 13-15, wherein the first processing module is further configured to:
determining said first information by measurement, passing said first information to an upper layer;
receiving a first block of bits from an upper layer, the first block of bits comprising the first information;
wherein the first block of bits is used by the user equipment to determine the first radio signal, the first block of bits comprising a positive integer number of bits.
19. A base station device supporting low-delay wireless communication, comprising:
a second processing module: for receiving a fifth wireless signal in a fifth time interval; receiving a first wireless signal in a first time interval;
a first sending module: for transmitting a second wireless signal in a second time interval;
wherein the first wireless signal comprises first information; the first information is used to determine first channel information comprising one or more of { first antenna port group, first rank indication, first channel parameter matrix, first CQI }; the first antenna port group comprises a positive integer of antenna ports; the second wireless signal is used to determine whether the first information is correctly decoded; the first information is MAC layer signaling, or the first information is RRC layer signaling; the fifth time interval is prior to the first time interval, the fifth wireless signal comprising second information; the second information and the first information are used to determine second channel information; the first channel information is directed at a downlink wireless signal sent by the base station after adopting the second channel information; the second channel information comprises one or more of { the first antenna port group, the first rank indication }; the fifth wireless signal is transmitted on a physical layer control channel.
20. The base station device of claim 19, further comprising the following modules:
a third sending module: for transmitting a third wireless signal in a third time interval;
a third receiving module: for receiving a fourth wireless signal in a fourth time interval;
wherein the third wireless signal carries a first signaling, the first signaling is a higher layer signaling, and the first signaling is used to determine a configuration parameter of the first information, where the configuration parameter includes at least one of { a request to send, one or more corresponding serving cells, one or more corresponding CSI processes, and a type of channel information included }; the fourth wireless signal is used to determine that the third wireless signal is correctly decoded; { the fourth time interval } and at least one of a time-domain position of a CSI reference resource of the first information, the first time interval }.
21. The base station device of claim 19 or 20, wherein the second processing module is further configured to send a second signaling; wherein the second signaling is used to determine configuration information of the first wireless signal, the configuration information including at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }.
22. The base station device of claim 19 or 20, wherein the second processing module is further configured to perform blind detection in the first time interval to determine the first wireless signal;
the base station device is characterized in that the second processing module is further configured to:
passing a first block of bits to an upper layer, the first block of bits comprising the first information;
receiving first information from an upper layer;
wherein the first wireless signal is used by the base station to determine the first bit block, the first bit block comprising a positive integer number of bits.
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| CN201610585632.8A CN107659373B (en) | 2016-07-23 | 2016-07-23 | Method and device in wireless communication |
| PCT/CN2017/091922 WO2018019103A1 (en) | 2016-07-23 | 2017-07-06 | Method and apparatus for wireless communication |
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| CN201610585632.8A CN107659373B (en) | 2016-07-23 | 2016-07-23 | Method and device in wireless communication |
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| CN110177397B (en) * | 2018-02-17 | 2023-09-22 | 迪朵无线创新有限公司 | User equipment, method and device in base station for wireless communication |
| WO2019213852A1 (en) * | 2018-05-09 | 2019-11-14 | 南通朗恒通信技术有限公司 | Method and device for user equipment and base station used for wireless communication |
| CN114554616A (en) | 2018-07-05 | 2022-05-27 | 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 |
| CN111525994B (en) * | 2019-02-04 | 2022-11-01 | 上海朗帛通信技术有限公司 | Method and arrangement in a user equipment, base station, used for wireless communication |
| CN115189856A (en) * | 2019-03-05 | 2022-10-14 | 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 |
| CN113810318B (en) * | 2020-06-17 | 2024-04-12 | 上海朗帛通信技术有限公司 | User equipment, method and device in base station for wireless communication |
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| CN1531238A (en) * | 2003-03-14 | 2004-09-22 | ��Ѹ�Ƽ���˾ | Method for transmitting channel quality information and distributing power in wireless communication system |
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