CN108289020B - Method and device used in UE and base station for wireless communication - Google Patents
Method and device used in UE and base station for wireless communication Download PDFInfo
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- CN108289020B CN108289020B CN201710045424.3A CN201710045424A CN108289020B CN 108289020 B CN108289020 B CN 108289020B CN 201710045424 A CN201710045424 A CN 201710045424A CN 108289020 B CN108289020 B CN 108289020B
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a method and equipment in a UE and a base station used for wireless communication. The UE receives the target information and monitors for the first signaling in the first time window. The first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling. The invention reduces the load size of the first signaling by establishing the relation between the load size of the first signaling and the target transmission direction, thereby reducing the overhead of the control signaling and improving the transmission efficiency and the spectrum efficiency of the system.
Description
Technical Field
The present invention relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for configurable transmission direction.
Background
For TDD (Time division duplex) in an LTE (Long Term Evolution) system, DCI (Downlink Control Information) cannot be transmitted in a subframe containing uplink data, that is, can only be transmitted in a Downlink subframe or a special subframe. In the LTE system, DCI for a downlink Grant (Grant) and scheduled downlink data are generally transmitted in one subframe, and DCI for an uplink Grant and scheduled uplink data are generally transmitted in different subframes.
Further, the number of BDs (Blind Decoding) performed by the UE for the DCI is related to the possible Payload Size (Payload Size) of the DCI. To reduce the number of BDs, Padding bits (Padding bits) may be added after the information bits to ensure that different formats of DCI have the same payload size. For example, the downlink grant DCI format 1A and the DCI format 0 for the uplink grant have the same payload size.
In 3GPP (3rd Generation Partnership Project) RAN (Radio access Network )1 (first working group) #87 conferences, it is clear in the NR (New Radio) topic that the uplink and downlink transmission directions can be dynamically configured in one timeslot.
Disclosure of Invention
For NR, how to design the payload size of downlink signaling is a problem to be solved. One straightforward way is to keep reusing the existing scheme, i.e. to keep the control signaling for the downlink grant and the control signaling for the uplink grant with the same payload size by adding padding bits.
However, the inventors have found through research that in future mobile communication systems, a downlink control channel may occur in a subframe or a slot accommodating uplink data. The inventors have found through research that, in a search space of a control channel corresponding to a subframe or a timeslot capable of accommodating uplink data, only downlink signaling for uplink grant generally exists, and downlink signaling for downlink grant does not exist.
Based on the above analysis, the present invention provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the UE of the present application may be applied in a base station and vice versa.
The invention discloses a method used in UE of wireless communication, which comprises the following steps:
-step a. receiving target information;
-step b. monitoring the first signalling in a first time window.
Wherein the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
As an embodiment, if the target transmission direction is uplink, the first signaling is physical layer signaling used for other than uplink Grant, a payload size of the first signaling is equal to a payload size of uplink Grant DCI for the UE transmitted in a first time window, and the uplink Grant DCI for the UE transmitted in the first time window does not include padding bits. If the target transmission direction is downlink, the payload size of the first signaling is equal to the payload size of downlink Grant DCI for the UE transmitted in a first time window, and the uplink Grant DCI for the UE transmitted in the first time window includes padding bits. The embodiment can effectively reduce the overhead of the control signaling, and avoid the waste of the control signaling resource caused by adding excessive filling bits in the first signaling.
As one embodiment, the target information is dynamically configured.
As one embodiment, the target transmission direction is for a second time window.
As a sub-embodiment of this embodiment, the first time window and the second time window belong to one sub-frame.
As a sub-embodiment of this embodiment, the first time window and the second time window belong to one time slot.
As an embodiment, the payload size of the first signaling is the number of all bits in the first signaling.
As an embodiment, the payload size of the first signaling is the number of bits of the first signaling excluding check bits.
As an embodiment, the payload size of the first signaling is the number of all remaining bits of the first signaling excluding CRC bits.
As an embodiment, the payload size of the first signaling is a sum of a number of information Bits and a number of Padding Bits (Padding Bits) in the first signaling.
As an embodiment, the set of candidate directions comprises terminal-to-terminal.
As an embodiment, the uplink refers to terminal-to-base station.
As an embodiment, the downlink refers to from a base station to a terminal.
As an embodiment, the target information is indicated by a signature sequence, the signature sequence being one of { Zadoff-Chu sequence, pseudo-random sequence }.
As an embodiment, the target information is generated by channel coding with code rate 1/16.
As an embodiment, the Physical layer signaling corresponding to the target information is one of { PCFICH (Physical control format Indicator Channel), ePCFICH (Enhanced PCFICH, Enhanced Physical control format Indicator Channel), and sPCFICH (Short-Latency PCFICH, Short-delayed Physical control format Indicator Channel) }.
As an embodiment, the target information is physical layer signaling, and a CRC (cyclic redundancy Check) of the physical layer signaling is scrambled by a given RNTI (Radio Network temporary Identity).
As a sub-embodiment of this embodiment, the given RNTI is a SI-RNTI (System RNTI, System radio network temporary identity).
As one embodiment, the target information is physical layer signaling and the target information cell is specific.
As an embodiment, the target information is transmitted in CSS (Common Search Space).
As one embodiment, the target information is Semi-Static (Semi-Static) configured.
As a sub-embodiment of this embodiment, the target information is cell-specific.
As a sub-embodiment of this embodiment, the target information is specific to a TRP (Transmission receiptionpoint).
As a sub-embodiment of this embodiment, the target information is transmitted in a SIB (System information block).
As an embodiment, the target information includes first sub-target information and second sub-target information. The first sub-targeting information is semi-statically configured and the second sub-targeting information is dynamically configured.
As a sub-embodiment of this embodiment, the first time window belongs to a first time unit, and the first sub-target information indicates that the first time unit supports a plurality of candidate directions.
As an additional embodiment of this sub-embodiment, two of the candidate directions in the plurality of candidate directions are uplink and downlink, respectively
As a sub-embodiment of this embodiment, the second sub-information indicates that the target transmission direction corresponding to the first time unit is uplink; or the second sub-information indicates that the target transmission direction corresponding to the first time unit is downlink.
As an auxiliary embodiment of the two sub-embodiments, the first time unit is one of { subframe, timeslot, minislot }.
As one embodiment, the first signaling is UE-specific.
As an embodiment, the CRC of the first signaling is scrambled by a C-RNTI (Cell-RNTI, Cell radio network temporary identity).
As an embodiment, the first signaling is one of { cell-specific, TRP-specific, Beam (Beam) -specific, Beam Group (Beam Group) -specific, Antenna Port Group (Antenna Port Group) -specific }.
As an embodiment, the CRC of the first signaling is scrambled by TPC-PUCCH-RNTI (Transmission power Control-Physical Uplink Control Channel-RNTI); or the CRC of the first signaling is scrambled by TPC-PUSCH-RNTI (TPC physical uplink Shared Channel-RNTI).
Specifically, according to an aspect of the present invention, the method is characterized in that, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
As an embodiment, the above method is characterized in that: when the target transmission direction is uplink, the first signaling corresponds to a DCI format for uplink transmission or uplink power control, and the load size of the first signaling is designed according to the format corresponding to the uplink transmission and the format corresponding to the uplink power control, so that the design according to the DCI format for downlink transmission with a larger load size is avoided, and the overhead of control signaling is reduced.
As an example, another peculiarity of the above method consists in: when the target transmission direction is downlink, the first signaling corresponds to a DCI Format for uplink transmission or downlink transmission, and the load size of the first signaling is designed according to the Format corresponding to the downlink transmission, which also achieves the advantage that the DCI Format 0/1a of the existing system adopts the same load size to reduce the number of blind detections.
As an embodiment, if the target transmission direction is uplink, padding bits are not included in the first signaling; the first signaling comprises padding bits if the target transmission direction is downlink.
As an embodiment, the target transmission direction is uplink, and the first signaling supports a first format and a second format.
As a sub-embodiment of this embodiment, the first signaling is for uplink grant and the first Format is one of DCI formats {0, 6-0A, 6-0B, N0 }.
As a sub-embodiment of this embodiment, the second Format is one of DCI formats {3, 3A }.
As a sub-embodiment of this embodiment, the number of information bits corresponding to the first format is equal to M1, and the number of information bits corresponding to the second format is equal to M2. The M1 and the M2 are both positive integers, the M1 is greater than the M2. The M1 is equal to the first integer. And when the information corresponding to the second format is transmitted, the first signaling achieves the payload size corresponding to the first integer through adding padding bits by the M2 information bits.
As an additional embodiment of this sub-embodiment, the number of padding bits is equal to the difference between the first integer and the M2.
As an embodiment, the target transmission direction is uplink, and the first signaling only supports the first format.
As a sub-embodiment of this embodiment, the first Format is one of the DCI Format {0, 6-0A, 6-0B, N0 }.
As a sub-embodiment of this embodiment, the number of information bits corresponding to the first format is equal to M1, and M1 is equal to the first integer. And the payload size corresponding to the first format does not contain padding bits.
As an embodiment, the target transmission direction is uplink, and the first signaling only supports the second format.
As a sub-embodiment of this embodiment, the second Format is one of DCI formats {3, 3A }.
As a sub-embodiment of this embodiment, the number of information bits corresponding to the second format is equal to M2, and M2 is equal to the first integer. And the payload size corresponding to the second format does not contain padding bits.
As an embodiment, the target transmission direction is downlink, and the first signaling supports a first format and a third format.
As a sub-embodiment of this embodiment, the first signaling is upstream authorization and the first format is one of DCIFormat {0, 6-0A, 6-0B, N0 }.
As an auxiliary embodiment corresponding to the sub-embodiment, the data signal scheduled by the first signaling is located in a different subframe from the first signaling, or the data signal scheduled by the first signaling is located in a different time slot from the first signaling.
As a sub-embodiment of this embodiment, the first signaling is a downlink grant and the third format is one of DCIFormat {1A, 6-1B, N1 }.
As a sub-embodiment of this embodiment, the number of information bits corresponding to the first format is equal to M1, and the number of information bits corresponding to the third format is equal to M3. The M1 and the M3 are both positive integers, the M1 is less than the M3. The M3 is equal to the second integer. And when the information corresponding to the first format is transmitted, the first signaling achieves the payload size corresponding to the second integer through adding padding bits by the M1 information bits.
As an additional embodiment of this sub-embodiment, the number of padding bits is equal to the difference between the second integer and the M1.
Specifically, according to an aspect of the present invention, the method is characterized by further comprising the steps of:
-step c. transmitting the first wireless signal in a third time window.
Wherein the first signaling is used to determine first scheduling information, the first scheduling information being applied to the first wireless signal. The first scheduling information includes at least one of { a position of an occupied time domain resource, a position of an occupied frequency domain resource, a corresponding transmitting antenna port, a corresponding receiving antenna port, an MCS (Modulation and coding status, Modulation and coding state), an NDI (New Data Indicator), an RV (redundancy version), and an HARQ (Hybrid Automatic Repeat reQuest) process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
As an embodiment, the above method is characterized in that: the first signaling is used for uplink data scheduling, and the transmission of the uplink data scheduling is located in a different subframe or a different time slot than the first signaling.
As an embodiment, the first signaling is an uplink grant.
As an embodiment, the first signaling corresponds to a first Format, and the first Format is one of DCI formats {0, 6-0A, 6-0B, N0 }.
As an embodiment, the third time window and the first time window are located in different subframes, or the third time window and the first time window are located in different time slots.
As an embodiment, the third time window and the second time window are located in different subframes, or the third time window and the second time window are located in different time slots.
As an embodiment, the second time window and the first time window are located in the same subframe, or the second time window and the first time window are located in the same timeslot.
In particular, according to an aspect of the present invention, the method is characterized in that the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
As an embodiment, the above method is characterized in that: the first signaling is used for uplink power control.
As an embodiment, the first signaling is used for power control only.
As an embodiment, the first signaling is used only for other physical layer signaling.
As an embodiment, the first signaling is cell-common.
As an embodiment, the first signaling is specific to a terminal group including a plurality of terminals, and the UE is one of the terminals among the plurality of terminals.
As an embodiment, the first signaling corresponds to a third Format, and the third Format is one of DCI formats {3, 3A }.
As an embodiment, the CRC of the first signaling is scrambled by TPC-PUCCH-RNTI; or the CRC of the first signaling is scrambled by TPC-PUSCH-RNTI.
Specifically, according to an aspect of the present invention, the method is characterized in that the step B further includes the steps of:
step B0. performs channel decoding.
Wherein, the channel coding corresponding to the channel decoding is based on Polar Code (Polar Code). The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
As an example, the above method has the benefits of: by differentiating the weight of the subchannel to which the information bits and the check bits are mapped at the time of encoding. The sub-channel with large channel capacity maps information bits, and the sub-channel with small channel capacity maps check bits, thereby increasing the robustness and transmission performance of control signaling.
As one embodiment, a CRC of the first set of bits is used to generate the second set of bits.
As an embodiment, a PC (Parity Check) of the first set of bits is used to generate the second set of bits.
As an embodiment, the first set of bits corresponds to information bits.
As an embodiment, the second set of bits corresponds to parity bits.
The invention discloses a method used in a base station of wireless communication, which comprises the following steps:
-step a. sending target information;
-step b. transmitting the first signaling in a first time window.
Wherein the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
Specifically, according to an aspect of the present invention, the method is characterized in that, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
Specifically, according to an aspect of the present invention, the method is characterized by further comprising the steps of:
-step c. receiving the first wireless signal in a third time window.
Wherein the first signaling is used to determine first scheduling information, the first scheduling information being applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
In particular, according to an aspect of the present invention, the method is characterized in that the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
Specifically, according to an aspect of the present invention, the method is characterized in that the step B further includes the steps of:
step B0. operates channel coding.
Wherein the channel coding is based on Polar Code (Polar Code). The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
The invention discloses user equipment used for wireless communication, which comprises the following modules:
-a first receiving module: for receiving target information;
-a second receiving module: for monitoring the first signaling during the first time window.
Wherein the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
As an embodiment, the user equipment further includes:
-a first sending module: for transmitting the first wireless signal in a third time window.
Wherein the first signaling is used to determine first scheduling information, the first scheduling information being applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
For one embodiment, the second receiving module is further configured to perform channel decoding. The channel coding corresponding to the channel decoding is based on Polar Code (Polar Code). The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
As one embodiment, the target information is dynamically configured.
As an embodiment, the payload size of the first signaling is the number of all bits in the first signaling.
As an embodiment, the payload size of the first signaling is the number of bits of the first signaling excluding check bits.
As an embodiment, the payload size of the first signaling is a number of bits of information bits in the first signaling.
As an embodiment, the payload size of the first signaling is a sum of a number of information bits and a number of Padding bits (Padding bits) in the first signaling.
Specifically, according to an aspect of the present invention, the above apparatus is characterized in that, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
In particular, according to an aspect of the present invention, the above apparatus is characterized in that the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
The invention discloses a base station device used for wireless communication, which comprises the following modules:
-a second sending module: for sending the target information;
-a third sending module: for transmitting first signaling in a first time window.
Wherein the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
As an embodiment, the base station apparatus further includes:
-a third receiving module: for receiving the first wireless signal in a third time window.
The first signaling is used to determine first scheduling information, which is applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
In one embodiment, the third sending module is further configured to operate channel coding. The channel coding is based on a polar code. The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
As one embodiment, the target information is dynamically configured.
As an embodiment, the payload size of the first signaling is the number of all bits in the first signaling.
As an embodiment, the payload size of the first signaling is the number of bits of the first signaling excluding check bits.
As an embodiment, the payload size of the first signaling is a number of bits of information bits in the first signaling.
As an embodiment, the payload size of the first signaling is a sum of a number of information bits and a number of Padding bits (Padding bits) in the first signaling.
Specifically, according to an aspect of the present invention, the above apparatus is characterized in that, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
In particular, according to an aspect of the present invention, the above apparatus is characterized in that the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
Compared with the prior art, the invention effectively reduces the overhead of the control signaling and avoids the waste of resources caused by adding excessive filling bits into the first signaling.
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 illustrates a flow diagram of targeted information transfer according to one embodiment of the invention;
FIG. 2 is a diagram illustrating temporal locations of a first time window, a second time window, and a third time window, according to one embodiment of the invention;
FIG. 3 shows a schematic diagram of the time domain positions of a first time window, a second time window and a third time window according to yet another embodiment of the invention;
fig. 4 shows a schematic diagram of the information bits comprised by the first signaling according to an embodiment of the invention;
fig. 5 shows a schematic diagram of the information bits comprised by the first signaling according to another embodiment of the invention;
fig. 6 shows a block diagram of a processing device in a UE according to an embodiment of the invention;
fig. 7 shows a block diagram of a processing device in a base station according to an embodiment of the 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
Embodiment 1 illustrates a flow chart of target information transmission according to the present invention, as shown in fig. 1. In fig. 1, base station N1 is a serving cell maintaining base station for UE U2. The steps identified by block F0, block F1, and block F2, respectively, are optional.
For theBase station N1The target information is transmitted in step S10, the channel coding is operated in step S11, the first signaling is transmitted in the first time window in step S12, and the first wireless signal is received in the third time window in step S13.
For theUE U2The target information is received in step S20, the first signaling is monitored in the first time window in step S21, channel decoding is performed in step S22, and the first wireless signal is transmitted in the third time window in step S23.
In embodiment 1, the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling. The first signaling is used to determine first scheduling information, which is applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain. The channel coding corresponding to the channel decoding is based on Polar Code (Polar Code). The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits. The uplink refers to terminal to base station. The downlink refers to from the base station to the terminal.
As a sub-embodiment, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
As a sub-embodiment, if the target transmission direction is uplink, the first signaling does not include padding bits; the first signaling comprises padding bits if the target transmission direction is downlink.
As a sub-embodiment, the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
As a sub-embodiment, the transmission channel corresponding to the first wireless signal is UL-SCH.
As a sub-embodiment, the physical layer Channel corresponding to the first wireless signal is a PUSCH Physical Uplink Shared Channel (PUSCH) or a Short Latency physical uplink Shared Channel (sPUSCH).
As one embodiment, the target information is dynamically configured.
As one embodiment, the target information is semi-statically configured.
As an embodiment, the target transmission direction is for a second time window, and the first time window and the second time window belong to one subframe or one slot.
As an embodiment, the set of candidate directions comprises terminal-to-terminal.
As an embodiment, the target information is generated by a signature sequence, and the signature sequence is one of { Zadoff-Chu sequence, pseudo-random sequence }.
As an embodiment, the Physical layer signaling corresponding to the target information is one of { PCFICH (Physical control format Indicator Channel), ePCFICH (Enhanced PCFICH, Enhanced Physical control format Indicator Channel), and sPCFICH (Short-Latency PCFICH, Short-delayed Physical control format Indicator Channel) }.
As an embodiment, the target information is physical layer signaling, and a CRC (cyclic redundancy Check) of the physical layer signaling is scrambled by a given RNTI (Radio Network temporary Identity).
For one embodiment, the target information is physical layer signaling and the target information is cell common.
As an embodiment, the target information is transmitted in CSS (Common Search Space).
Example 2
Embodiment 2 illustrates a schematic diagram of the time domain positions of a first time window, a second time window and a third time window according to the present invention. In fig. 2, the target information is transmitted in a first time window. The target transmission direction is for the second time window. First signaling is transmitted in the first time window. The first wireless signal is transmitted in the third time window.
In embodiment 2, the first signaling indicates first scheduling information; or the target signaling indicates first scheduling information, and the load size of the first signaling is equal to that of the target signaling. The first scheduling information is applied to the first wireless signal. The first time window precedes the third time window in the time domain. The second time window is located between the first time window and the third time window in the time domain.
As a sub-embodiment, the second time window and the first time window belong to one subframe, or the second time window and the first time window belong to one timeslot, or the second time window and the first time window belong to one minislot.
As a sub-embodiment, the third time window and the second time window belong to different subframes, or the third time window and the second time window belong to different time slots, or the third time window and the second time window belong to different micro-time slots.
Example 3
Embodiment 3 illustrates a schematic diagram of the time domain positions of the first time window, the second time window and the third time window according to the present invention. In fig. 3, destination information is transmitted in a fourth time window, the destination information indicating a destination transmission direction corresponding to data (if any) in the second time window. First signaling is transmitted in the first time window. The first wireless signal is transmitted in the third time window. The first signaling indicates first scheduling information, which is applied to the first wireless signal. The fourth time window precedes the first time window in the time domain, and the first time window precedes the third time window in the time domain. The second time window is located between the first time window and the third time window in the time domain.
As a sub-embodiment, the fourth time window and the first time window belong to a subframe, or the fourth time window and the first time window belong to a timeslot, or the fourth time window and the first time window belong to a minislot.
As a sub-embodiment, the fourth time window and the second time window belong to a subframe, or the fourth time window and the first time window belong to a timeslot, or the fourth time window and the first time window belong to a minislot.
As a sub-embodiment, the third time window and the second time window belong to different subframes, or the third time window and the second time window belong to different time slots, or the third time window and the second time window belong to different micro-time slots.
Example 4
Embodiment 4 illustrates a schematic diagram of information bits contained in a first signaling according to the present invention. As shown in fig. 4, the first signaling is transmitted in time units in which a target transmission direction is uplink. The first signaling supports both a first format and a second format. The first format contains only M1 information bits, and the second format contains M2 information bits and N1 padding bits. The sum of the M2 and the N1 is equal to the M1. The M1, the N1, and the M2 are all positive integers.
As a sub-embodiment, the first Format is one of the DCI Format {0, 6-0A, 6-0B, N0 }.
As a sub-embodiment, the second Format is one of DCI formats {3, 3A }.
As a sub-embodiment, the pad bits are all equal to "0".
Example 5
Embodiment 5 illustrates a schematic diagram of information bits contained in a first signaling according to the present invention. As shown in fig. 5, the first signaling is transmitted in time units in which one target transmission direction is downlink. The first signaling supports both the first format and the third format. The first format contains M1 information bits and N2 padding bits, and the third format contains only M3 information bits. The sum of the M1 and the N2 is equal to the M3. The M1, the N2, and the M3 are all positive integers.
As a sub-embodiment, the first Format is one of the DCI Format {0, 6-0A, 6-0B, N0 }.
As a sub-embodiment, the third Format is one of the DCI Format {1A, 6-1A, 6-1B, N1 }.
As a sub-embodiment, the pad bits are all equal to "0".
Example 6
Embodiment 6 is a block diagram illustrating a processing apparatus in a UE, as shown in fig. 6. In fig. 6, the UE processing apparatus 100 mainly includes a first receiving module 101, a second receiving module 102 and a first sending module 103. Wherein the first sending module 103 is optional.
The first receiving module 101: for receiving target information;
-the second receiving module 102: means for monitoring for first signaling in a first time window;
-the first sending module 103: for transmitting the first wireless signal in a third time window.
In embodiment 6, the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
As a sub-embodiment, the payload size of the first signaling is equal to the payload size of target signaling used to determine first scheduling information applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
As an embodiment, the first signaling is the target signaling.
As an embodiment, the first signaling is identified by a first ID and the target signaling is identified by a second ID. The given signaling is identified by a given ID meaning: the given ID is used to { determine REs (resource elements) occupied by the given signaling, scramble CRC (cyclic redundancy check) of the given signaling, and determine at least one of DMRSs (DeModulation Reference Signal) of the given signaling }. The first ID and the second ID are integers, respectively, and the first ID is not equal to the second ID.
As an embodiment, the first ID is cell-common and the second ID is UE-specific.
As an embodiment, the first ID and the second ID are respectively an RNTI (Radio network temporary identity).
As an embodiment, the target information is dynamically configured or semi-statically configured.
As a sub-embodiment, the second receiving module 102 is further configured to perform channel decoding. The channel coding corresponding to the channel decoding is based on Polar Code (Polar Code). The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
As a sub-embodiment, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
As a sub-embodiment, the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
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 mainly comprises a second sending module 201, a third sending module 202 and a third receiving module 203. Wherein the third receiving module 203 is optional.
The second sending module 201: for sending the target information;
third sending module 202: for transmitting first signaling in a first time window;
the third receiving module 203: for receiving the first wireless signal in a third time window.
In embodiment 7, the first signaling is physical layer signaling. The target information is used to determine a target transmission direction, which is one of a set of candidate directions. The set of candidate directions comprises a plurality of the candidate directions, two of which are uplink and downlink, respectively. The target transmission direction is used to determine a payload size of the first signaling.
As an embodiment, a load size of the first signaling is equal to a load size of target signaling, the target signaling being used to determine first scheduling information, the first scheduling information being applied to the first wireless signal. The first scheduling information includes at least one of { position of occupied time domain resource, position of occupied frequency domain resource, corresponding transmitting antenna port, corresponding receiving antenna port, MCS, RV, NDI, HARQ process number }. The target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
As an embodiment, the first signaling is cell-common.
As an embodiment, the target information is dynamically configured or semi-statically configured.
As a sub-embodiment, the third sending module 202 is further configured to operate channel coding. The channel coding is based on a polar code. The first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding. The channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than the channel capacity of the sub-channel mapped by any one bit in the second bit set. Bits in the first set of bits are used to generate bits in the second set of bits.
As a sub-embodiment, if the target transmission direction is uplink, the payload size of the first signaling is a first integer; and if the target transmission direction is downlink, the load size of the first signaling is a second integer. The first integer is less than the second integer.
As a sub-embodiment, the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
As an embodiment, the target information is indicated by a signature sequence, the signature sequence being one of { Zadoff-Chu sequence, pseudo-random sequence }.
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 and the terminal in the present invention include, but are not limited to, a mobile phone, a tablet computer, a notebook computer, a vehicle-mounted Communication device, a wireless sensor, a network card, an internet of things terminal, an RFID terminal, an NB-IOT terminal, an MTC (Machine Type Communication) terminal, an eMTC (enhanced MTC) terminal, a data card, a network card, a vehicle-mounted Communication device, a low-cost mobile phone, a low-cost tablet computer, and other wireless Communication devices. The base station in the present 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 (14)
1. A method in a UE for wireless communication, comprising the steps of:
-step a. receiving target information;
-step b. monitoring the first signalling in a first time window;
wherein the first signaling is physical layer signaling; the target information is used to determine a target transmission direction, which is one of a set of candidate directions; the candidate direction set comprises a plurality of candidate directions, and two candidate directions in the candidate directions are an uplink direction and a downlink direction respectively; the target transmission direction is used to determine a payload size of the first signaling; the target transmission direction is for a second time window, the first time window being before a third time window in the time domain, the second time window being between the first time window and the third time window in the time domain; the first time window and the second time window belong to a time slot; the meaning that the target transmission direction is used for determining the payload size of the first signalling comprises at least one of:
-the target transmission direction is uplink and the payload size of the first signaling is a first integer, or the target transmission direction is downlink and the payload size of the first signaling is a second integer, the first integer being smaller than the second integer;
-the target transmission direction is uplink and the first signaling does not comprise padding bits, or the target transmission direction is downlink and the first signaling comprises padding bits.
2. The method of claim 1, further comprising the steps of:
-step c. transmitting the first wireless signal in a third time window;
wherein the first signaling is used to determine first scheduling information, the first scheduling information being applied to the first wireless signal; the first scheduling information comprises at least one of { the position of occupied time domain resources, the position of occupied frequency domain resources, corresponding transmitting antenna ports, corresponding receiving antenna ports, MCS, RV, NDI, HARQ process number }; the target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
3. The method according to claim 1 or 2, wherein the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
4. The method of claim 1, wherein step B further comprises the steps of:
step B0. performs channel decoding;
wherein, the channel coding corresponding to the channel decoding is based on Polar Code (Polar Code); the first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding; the channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than that of the sub-channel mapped by any one bit in the second bit set; bits in the first set of bits are used to generate bits in the second set of bits.
5. A method in a base station for wireless communication, comprising the steps of:
-step a. sending target information;
-step b. sending a first signalling in a first time window;
wherein the first signaling is physical layer signaling; the target information is used to determine a target transmission direction, which is one of a set of candidate directions; the candidate direction set comprises a plurality of candidate directions, and two candidate directions in the candidate directions are an uplink direction and a downlink direction respectively; the target transmission direction is used to determine a payload size of the first signaling; the target transmission direction is for a second time window, the first time window being before a third time window in the time domain, the second time window being between the first time window and the third time window in the time domain; the first time window and the second time window belong to a time slot; the meaning that the target transmission direction is used for determining the payload size of the first signalling comprises at least one of:
-the target transmission direction is uplink and the payload size of the first signaling is a first integer, or the target transmission direction is downlink and the payload size of the first signaling is a second integer, the first integer being smaller than the second integer;
-the target transmission direction is uplink and the first signaling does not comprise padding bits, or the target transmission direction is downlink and the first signaling comprises padding bits.
6. The method of claim 5, further comprising the steps of:
-step c. receiving the first wireless signal in a third time window;
wherein the first signaling is used to determine first scheduling information, the first scheduling information being applied to the first wireless signal; the first scheduling information comprises at least one of { the position of occupied time domain resources, the position of occupied frequency domain resources, corresponding transmitting antenna ports, corresponding receiving antenna ports, MCS, RV, NDI, HARQ process number }; the target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain.
7. The method according to claim 5 or 6, wherein the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
8. The method of claim 5, wherein step B further comprises the steps of:
-step B0. operating channel coding;
wherein the channel coding is based on a polar code; the first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding; the channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than that of the sub-channel mapped by any one bit in the second bit set; bits in the first set of bits are used to generate bits in the second set of bits.
9. A user equipment for wireless communication, comprising:
-a first receiving module: for receiving target information;
-a second receiving module: means for monitoring for first signaling in a first time window;
-a first sending module: for transmitting the first wireless signal in a third time window;
wherein the first signaling is physical layer signaling; the target information is used to determine a target transmission direction, which is one of a set of candidate directions; the candidate direction set comprises a plurality of candidate directions, and two candidate directions in the candidate directions are an uplink direction and a downlink direction respectively; the target transmission direction is used to determine a payload size of the first signaling; the first signaling is used to determine first scheduling information, which is applied to the first wireless signal; the first scheduling information comprises at least one of { the position of occupied time domain resources, the position of occupied frequency domain resources, corresponding transmitting antenna ports, corresponding receiving antenna ports, MCS, RV, NDI, HARQ process number }; the target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain; the first time window precedes the third time window in the time domain, and the second time window is between the first time window and the third time window in the time domain; the first time window and the second time window belong to a time slot; the meaning that the target transmission direction is used for determining the payload size of the first signalling comprises at least one of:
-the target transmission direction is uplink and the payload size of the first signaling is a first integer, or the target transmission direction is downlink and the payload size of the first signaling is a second integer, the first integer being smaller than the second integer;
-the target transmission direction is uplink and the first signaling does not comprise padding bits, or the target transmission direction is downlink and the first signaling comprises padding bits.
10. The UE of claim 9, wherein the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
11. The UE of claim 9, wherein the second receiving module performs channel decoding; the channel coding corresponding to the channel decoding is based on Polar Code (Polar Code); the first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding; the channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than that of the sub-channel mapped by any one bit in the second bit set; bits in the first set of bits are used to generate bits in the second set of bits.
12. A base station device used for wireless communication, comprising:
-a second sending module: for sending the target information;
-a third sending module: for transmitting first signaling in a first time window;
-a third receiving module: for receiving the first wireless signal in a third time window;
wherein the first signaling is physical layer signaling; the target information is used to determine a target transmission direction, which is one of a set of candidate directions; the candidate direction set comprises a plurality of candidate directions, and two candidate directions in the candidate directions are an uplink direction and a downlink direction respectively; the target transmission direction is used to determine a payload size of the first signaling; the first signaling is used to determine first scheduling information, which is applied to the first wireless signal; the first scheduling information comprises at least one of { the position of occupied time domain resources, the position of occupied frequency domain resources, corresponding transmitting antenna ports, corresponding receiving antenna ports, MCS, RV, NDI, HARQ process number }; the target information is dynamically configured, the target transmission direction is for a second time window, and the second time window and the third time window are orthogonal in time domain; the first time window precedes the third time window in the time domain, and the second time window is between the first time window and the third time window in the time domain; the first time window and the second time window belong to a time slot; the meaning that the target transmission direction is used for determining the payload size of the first signalling comprises at least one of:
-the target transmission direction is uplink and the payload size of the first signaling is a first integer, or the target transmission direction is downlink and the payload size of the first signaling is a second integer, the first integer being smaller than the second integer;
-the target transmission direction is uplink and the first signaling does not comprise padding bits, or the target transmission direction is downlink and the first signaling comprises padding bits.
13. The base station apparatus of claim 12, wherein the first signaling is physical layer signaling other than { for uplink grant, for downlink grant }.
14. The base station apparatus of claim 12, wherein the third transmitting module operates channel coding; the channel coding is based on a polar code; the first signaling comprises a first set of bits and a second set of bits, both of which are inputs of the channel coding; the channel capacity of the sub-channel mapped by any one bit in the first bit set is larger than that of the sub-channel mapped by any one bit in the second bit set; bits in the first set of bits are used to generate bits in the second set of bits.
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| CN115633404A (en) * | 2019-08-16 | 2023-01-20 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
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