WO2017045555A1

WO2017045555A1 - Method and device in ue and base station supporting low-delay radio communication

Info

Publication number: WO2017045555A1
Application number: PCT/CN2016/098269
Authority: WO
Inventors: 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2015-09-20
Filing date: 2016-09-07
Publication date: 2017-03-23
Also published as: CN106550445B; CN106550445A

Abstract

Disclosed are a method and device in a UE and a base station supporting low-delay radio communication in radio communication. As an embodiment, the UE receives first signaling in step 1, the first signaling scheduling sending of N transmission block groups; the UE receives the N transmission block groups in step 2, the N transmission block groups being sent in N LTE time slots respectively; and the UE sends N uplink signals in N sub-resource groups respectively in step 3, the N uplink signaling respectively indicating whether transmission blocks in the N transmission block groups are correctly received. The first signaling is physical layer signaling, and N is a positive integer. Each of the transmission block groups comprises G transmission blocks, and G is a positive integer. Each of the sub-resource groups comprises J sub-resources, a format of each of the sub-resources is a part, within an LTE time slot, of a PUCCH format {1, 1a, 1b}, and J is 1 or 2. The present invention can reduce the network time delay, and can keep compatible with an existing LTE device to the greatest extent.

Description

Method and device in UE, base station supporting low delay wireless communication

Technical field

The present invention relates to a transmission scheme in a wireless communication system, and more particularly to a method and apparatus for low latency transmission based on LTE-Long Term Evolution.

Background technique

In the 3rd (3rd Generation Partner Project) RAN (Radio Access Network) #63 plenary meeting, the problem of reducing the delay of the LTE network is discussed. The delay of the LTE network includes air interface delay, signal processing delay, and transmission delay between nodes. With the upgrade of the wireless access network and the core network, the transmission delay is effectively reduced. With the application of new semiconductors with higher processing speeds, signal processing delays are significantly reduced.

In LTE, a TTI (Transmission Time Interval) or a subframe or a Physical Resource Block (PB) corresponds to one ms (milli-second) in time. An LTE subframe includes two time slots (Time Slots) - a first time slot and a second time slot, respectively. The PDCCH (Physical Downlink Control Channel) occupies the first R OFDM (Orthogonal Frequency Division Multiplexing) symbols of the PRB pair, and the R is a positive integer not exceeding 4, and the R is PCFICH (Physical Control Format Indicator Channel) configuration. For FDD (Frequency Division Duplex) LTE, the HARQ (Hybrid Automatic Repeat reQuest) loopback time is 8 ms, and a small number of HARQ retransmissions will bring about tens of ms network delay. Therefore, reducing the air interface delay becomes an effective means to reduce the delay of the LTE network.

The present invention provides a solution to the problem of a long air interface delay in LTE. It should be noted that, in the case of no conflict, the features in the embodiments and embodiments in the UE (User Equipment) of the present application can be applied to the base station, and vice versa. Further, the features of the embodiments and the embodiments of the present application may be combined with each other arbitrarily without conflict.

Summary of the invention

In order to reduce the air interface delay, an intuitive method is to use a short TTI, such as a TTI of 0.5 ms. The inventors found through research that the length of TTI is only a factor of air interface delay, and the delay caused by uplink physical layer control signaling of up to 1 ms also significantly affects air interface delay. Further, the new control signaling scheme should be as compatible as possible with existing LTE equipment.

The present invention provides a solution to the above problems.

The invention discloses a method in a UE supporting low-latency wireless communication, which comprises the following steps:

- Step A. Receiving first signaling, the first signaling scheduling transmission of N transport block groups

- Step B. Receiving N transport block groups, the N transport block groups are respectively sent in N LTE time slots

- Step C. Send N uplink signalings in the N sub-resource groups, the N sub-resource groups are respectively located in N subsequent LTE slots, and the N uplink signalings respectively indicate the N transport block groups. Whether the transport block is received correctly.

The first signaling is physical layer signaling, and the N is a positive integer. One of the transport block groups includes G transport blocks, and the G is a positive integer. One of the sub-resource groups includes J sub-resources, and the format of one of the sub-resources is a part of a given format within one LTE time slot, and the J is 1 or 2. The given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- Second format: LTE PUCCH format {2, 2a, 2b}.

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

In the above method, the uplink signaling is sent in one LTE slot, which reduces the air interface delay. On the other hand, the base station dynamically selects an appropriate frequency domain resource for the uplink signaling according to parameters such as channel quality, and reduces a BLER (Blocking Error Rate). Furthermore, reducing the number of PRBs included in the first frequency domain location can (in the case of a given maximum uplink transmit power) increase the uplink coverage.

Another advantage of the foregoing aspect is that, in the N LTE time slots, the uplink signaling may coexist with an existing LTE PUCCH format (eg, the first format and the second format) in one PRB, that is, the Uplink signaling and LTE PUCCH resource sharing PRB improve transmission efficiency.

In the present invention, the PUCCH resource is a PUCCH Resource in LTE. Detailed definition Consider the definition of PUCCH resource in TS36.213 and TS36.211.

As an embodiment, the (one or more) PRBs occupied by the N sub-resource groups in each of the subsequent LTE slots are the same.

As an embodiment, multiple (greater than 1) PRBs occupied by one of the sub-resource groups are consecutive in the frequency domain.

As an embodiment, the format of the sub-resource and the given format respectively include an SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol occupied by a {RS (Reference Signal) The number and location, the RS sequence, the position of the SC-FDMA symbol occupied by the modulation symbol, the modulation symbol is mapped to the orthogonal sequence used by the RE}, and the modulation symbol is modulated by the HARQ-ACK bit.

As an embodiment, the format of the sub-resource and the given format respectively include a number of HARQ-ACK bits.

As an embodiment, the N is 1.

As an embodiment, the N is 2, and the N LTE time slots belong to one LTE subframe.

As an embodiment, the PRB corresponding to the first selected resource belongs to the PUCCH area. That is, the uplink signaling can coexist in the first format or the second format in one PRB.

As an embodiment, the first signaling is DCI (Downlink Control Information) for downlink scheduling (Downlink Grant). As a sub-embodiment of the above embodiment, the first signaling is one of DCI formats {1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D}.

As an embodiment, the transport block is a MAC (Medium Access Control) PDU (Protocol Data Unit).

As an embodiment, the G is 1.

As an embodiment, the G is 2, and the G transport blocks are respectively sent by different antenna ports.

As an embodiment, the first signaling includes G modulation coding indexes, where the G modulation coding indexes are respectively used to indicate a modulation mode and a coding rate adopted by the G transport blocks in the transport block group ( That is, the N transport block groups share the same G MCSs). As a sub-embodiment of the foregoing embodiment, the modulation and coding index is an MCS (Modulation and Coding Scheme) in LTE.

As an embodiment, the given format is a first format and the J is 1.

As an embodiment, the given format is a second format, and J is 1.

As an embodiment, the given format is a third format and the J is 2.

As an embodiment, the given format is a fourth format, and the J is greater than two.

As an embodiment, the fourth format is a PUCCH format for transmitting HARQ-ACK in a scenario where the number of aggregated carriers is greater than 5.

As an embodiment, the number of PRB pairs occupied by one PUCCH resource of the fourth format is greater than 1.

As an embodiment, the uplink signaling is further used to indicate a {SR (Scheduling Request), an RI (Rank Indicator), a PMI (Precoding Matrix Indicator), and a CQI (Channel Quality Indicator). One or more of PTI (Prcoding Type Indicator).

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

Step A0. Receive second signaling, the second signaling indicating L candidate resources, the L being a positive integer.

The first signaling indicates an index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups, and the second signaling is high-layer signaling, and the candidate is The resource includes one of the sub-resource groups in the N subsequent LTE slots.

For {second format, third format, fourth format}, the PUCCH resources occupied by the legacy terminal equipment of LTE are configured by higher layer signaling. Therefore, the second signaling can avoid collision between the uplink signaling and the legacy PUCCH signaling.

As an embodiment of the above aspect, the given format is a PUCCH format other than the first format.

As an embodiment, the first signaling is transmitted on the secondary cell.

As an embodiment, the uplink signaling further indicates whether the target transport block is correctly received, and the target transport block is a transport block other than the N transport block groups.

As an embodiment, the second signaling is RRC (Radio Resource Control) layer signaling.

As an embodiment, the L is a positive integer power of two.

Specifically, according to an aspect of the present invention, the given format is a first format, first The signaling includes first information and second information, where the first information indicates a frequency band boundary corresponding to the N sub resource groups, and the second information indicates an offset of an index of the first selected resource compared to an index of the first associated resource. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, where the first selected resource is composed of the N sub-resource groups, and the first associated resource is in the N subsequent LTE slots. Each of the band boundaries includes one of the sub-resource groups. The RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs, and the W is a positive integer greater than 10.

For the first format, the PUCCH resource occupied by the legacy terminal device of the LTE is indicated by the index of the first CCE (Control Channel Element) occupied by the PDCCH (Physical Downlink Control Channel). In the above aspect, the first information helps the base station to select a frequency band with better transmission quality for the UE, and the second information helps avoid collision with the PUCCH signaling of the first format.

The band boundary is one of two boundaries that can be used to transmit system bandwidth of the first format. As an embodiment, the first information is indicated by 1 information bit.

As an embodiment, the W is one of {32, 36}.

As an embodiment, the first signaling is transmitted on a PDCCH, the channel unit being a CCE.

As an embodiment, the first signaling is transmitted on the ePDCCH, and the channel unit is an eCCE.

As an embodiment, the first signaling is transmitted in the second time slot in one LTE subframe, and the pattern of the RE occupied by the first signaling in the LTE time slot and the RE occupied by one PDCCH are in the LTE time slot. The pattern is the same, and the pattern of the RE occupied by the channel unit in the LTE slot is the same as the pattern of the RE occupied by one CCE in the LTE slot.

As an embodiment, the first signaling is transmitted in an LTE time slot, and the RE occupied by the channel unit in the LTE time slot includes a first part and a second part, wherein the RE occupied by the first part and the second part is The pattern in the LTE slot is the same as the pattern occupied by the two CCEs in one LTE slot, respectively.

Specifically, according to the above aspect of the present invention, the step C further includes the following steps:

Step C0. Determine that the transmit power of the uplink signaling is the first power.

Wherein the first power varies linearly with a change in the total offset value, which is the sum of the adjusted powers indicated by each TPC command in the target TPC command set, the target TPC The command set includes all TPC commands indicated by the physical layer signaling received by the UE after the reset to the first signaling.

The essence of the above aspect is that the adjusted power value indicated by the TPC command in the first signaling (the minimum scheduling unit is an LTE slot) and the TPC command in the downlink DCI in the legacy (the minimum scheduling unit is an LTE subframe) are indicated by the TPC command. The adjusted power value can be superimposed.

As an embodiment, the linear slope of the first power to the total offset value is one. As an embodiment, the unit of the first power is dBm (millimeters).

As an embodiment, the foregoing physical layer signaling includes signaling with a minimum scheduling unit being an LTE slot and signaling with a minimum scheduling unit being an LTE subframe.

Specifically, according to the above aspect of the present invention, the first power is the transmission power of the given format determined according to the LTE scheme, except for the following correction:

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.

The above aspects of the present invention ensure that the BLER of the uplink signaling is not degraded compared to conventional PUCCH signaling.

The invention discloses a method in a base station supporting low-latency wireless communication, which comprises the following steps:

- Step A. Sending first signaling, the first signaling scheduling transmission of N transport block groups

- Step B. Send N transport block groups, the N transport block groups are respectively sent in N LTE time slots

- Step C. Receive N uplink signalings in the N sub-resource groups, where the N sub-resource groups are respectively located in N subsequent LTE slots, and the N uplink signalings respectively indicate the N transport block groups. Whether the transport block is received correctly.

- First format: LTE PUCCH format {1, 1a, 1b}

- Second format: LTE PUCCH format {2, 2a, 2b}.

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

- Step A0. Sending second signaling, the second signaling indicating L candidate resources, the L is A positive integer.

Specifically, according to an aspect of the present invention, the given format is a first format, where the first signaling includes first information and second information, where the first information indicates a frequency band boundary corresponding to the N sub resource groups, and second The information indicates an offset of the index of the first selected resource compared to the index of the first associated resource. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, where the first selected resource is composed of the N sub-resource groups, and the first associated resource is in the N subsequent LTE slots. Each of the band boundaries includes one of the sub-resource groups. The RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs, and the W is a positive integer greater than 10.

Specifically, in accordance with an aspect of the present invention, the step C further includes the following steps:

Wherein the first power varies linearly with a change in the total offset value, which is the sum of the adjusted powers indicated by each TPC command in the target TPC command set, the target TPC The command set includes all TPC commands indicated by the physical layer signaling that are received by the UE after the reset to the first signaling.

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.

The invention discloses a user equipment supporting low-latency wireless communication, which comprises the following modules:

The first module is configured to receive the first signaling, and the first signaling schedules the sending of the N transport block groups

a second module: for receiving N transport block groups, where the N transport block groups are respectively sent in N LTE time slots

The third module is configured to separately send N uplink signalings in the N sub-resource groups, where the N sub-resource groups are respectively located in N subsequent LTE slots, where the N uplink signalings respectively indicate the N transport blocks Whether the transport block in the group is received correctly.

The first signaling is physical layer signaling, and the N is a positive integer. One of the transport blocks The group includes G transport blocks, and the G is a positive integer. One of the sub-resource groups includes J sub-resources, and the format of one of the sub-resources is a part of a given format within one LTE time slot, and the J is 1 or 2. The given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- Second format: LTE PUCCH format {2, 2a, 2b}.

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

As an embodiment, the foregoing user equipment is characterized in that the first module is further configured to receive the second signaling, and the second signaling indicates the L candidate resources, where the L is a positive integer. The first signaling indicates an index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups, and the second signaling is high-layer signaling, and the candidate is The resource includes one of the sub-resource groups in the N subsequent LTE slots.

As an embodiment, the foregoing user equipment is characterized in that the given format is a first format, the first signaling includes first information and second information, and the first information indicates a frequency band boundary corresponding to the N sub resource groups, The second information indicates an offset of the index of the first selected resource compared to the index of the first associated resource. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, where the first selected resource is composed of the N sub-resource groups, and the first associated resource is in the N subsequent LTE slots. Each of the band boundaries includes one of the sub-resource groups. The RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs, and the W is a positive integer greater than 10.

As an embodiment, the foregoing user equipment is characterized in that the third module is further configured to determine that the sending power of the uplink signaling is the first power. Wherein the first power varies linearly with a change in the total offset value, which is the sum of the adjusted powers indicated by each TPC command in the target TPC command set, the target TPC The command set includes all TPC commands indicated by the physical layer signaling that are received by the UE after the reset to the first signaling. The first power is the transmit power of the given format determined according to the LTE scheme, except for the following corrections:

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.

The invention discloses a base station device supporting low-latency wireless communication, which comprises the following modules:

The first module is configured to send the first signaling, and the first signaling schedules the sending of the N transport block groups

a second module: configured to send N transport block groups, where the N transport block groups are respectively sent in N LTE time slots

The third module is configured to receive N uplink signalings in the N sub-resource groups, where the N sub-resource groups are respectively located in N subsequent LTE slots, where the N uplink signaling respectively indicate the N transport blocks Whether the transport block in the group is received correctly.

- First format: LTE PUCCH format {1, 1a, 1b}

- Second format: LTE PUCCH format {2, 2a, 2b}.

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

As an embodiment, the foregoing base station device is characterized in that the first module is further configured to send the second signaling, the second signaling indicates the L candidate resources, and the L is a positive integer. The first signaling indicates an index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups, and the second signaling is high-layer signaling, and the candidate is The resource includes one of the sub-resource groups in the N subsequent LTE slots.

As an embodiment, the foregoing base station device is characterized in that the given format is a first format, the first signaling includes first information and second information, and the first information indicates a frequency band boundary corresponding to the N sub resource groups, The second information indicates an offset of the index of the first selected resource compared to the index of the first associated resource. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, where the first selected resource is composed of the N sub-resource groups, and the first associated resource is in the N subsequent LTE slots. Each of the band boundaries includes one of the sub-resource groups. The RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs, and the W is a positive integer greater than 10.

As an embodiment, the foregoing base station device is characterized in that the third module is further configured to determine that the transmit power of the uplink signaling is the first power. Wherein the first power varies linearly with a change in the total offset value, which is the sum of the adjusted powers indicated by each TPC command in the target TPC command set, the target TPC Command set includes After the reset, the UE ends all TPC commands indicated by the physical layer signaling received by the first signaling. The first power is the transmit power of the given format determined according to the LTE scheme, except for the following corrections:

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.

Compared with the prior art, the present invention has the following technical advantages:

-. Reduce the air interface delay caused by PUCCH

- Compatible with existing LTE equipment to avoid conflict with traditional PUCCH signaling

- Improve spectrum utilization efficiency while ensuring BLER for uplink signaling.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

Figure 1 shows a flow chart of a downlink transmission in accordance with one embodiment of the present invention;

2 shows a schematic diagram of uplink signaling located in a PUCCH region according to an embodiment of the present invention;

3 shows a schematic diagram of a given format being a third format in accordance with one embodiment of the present invention;

4 is a schematic diagram showing scheduling timing of first signaling according to an embodiment of the present invention;

FIG. 5 shows a transmission flow chart of second signaling according to an embodiment of the present invention; FIG.

FIG. 6 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention; FIG.

FIG. 7 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention.

detailed description

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the features of the embodiments and the embodiments of the present application may be combined with each other without conflict.

Example 1

Embodiment 1 illustrates a downlink transmission flow chart as shown in FIG. In Figure 1, the base station N1 It is the maintenance base station of the serving cell of UE U2, and the step identified in block F1 is an optional step.

For the base station N1 , the first signaling is transmitted in step S11, and the first signaling schedules transmission of N transport block groups. N transport block groups are transmitted in step S12, and the N transport block groups are respectively transmitted in N LTE slots. It is determined in step S13 that the transmission power of the N uplink signaling is the first power. In step S14, N uplink signalings are respectively received in the N sub-resource groups, and the N uplink signalings respectively indicate whether the transport blocks in the N transport block groups are correctly received.

For UE U2 , the first signaling is received in step S21. N transport block groups are received in step S22. It is determined in step S23 that the transmission power of the N uplink signaling is the first power. In the step S24, N uplink signalings are respectively transmitted in the N sub-resource groups.

In Embodiment 1, the first signaling is physical layer signaling, and the N is a positive integer. The N sub-resource groups are respectively located in N subsequent LTE slots. One of the transport block groups includes G transport blocks, and the G is a positive integer. One of the sub-resource groups includes J sub-resources, and the format of one of the sub-resources is a part of a given format within one LTE time slot, and the J is 1 or 2. The N subsequent LTE slots are respectively after the N LTE slots. The given format is one of the following:

- first format. LTE PUCCH format {1, 1a, 1b}

- Second format. LTE PUCCH format {2, 2a, 2b}.

- Third format. LTE PUCCH format 3

- Fourth format. PUCCH format for supporting more than 20 ACK/NACK bits.

As a sub-embodiment 1 of the first embodiment, the N subsequent LTE timeslots are located in the LTE subframe #i, and the first power is:

Where P _CMAX,c (i) is the maximum transmit power of UE U2 on LTE subframe #i on the primary serving cell, and P _{0_PUCCH} and Δ _{F_PUCCH} (F) are values configured by higher layer signaling, respectively, PL _c is The path loss measured by UE U2, h(n _CQI , n _HARQ , n _SR ) is a value associated with the given format, and Δ _TxD (F') is related to the number of antenna ports transmitting the uplink signaling. Value. For a detailed definition of P _CMAX,c (i), P _{0_PUCCH} , Δ _{F_PUCCH} (F), PL _c , h(n _CQI , n _HARQ , n _SR ), Δ _TxD (F′), refer to TS 36.213. G(i) is a total offset value, which is a sum of adjusted powers indicated by each TPC command in the target TPC command set, the target TPC command set including the UE being reset ( That is, after receiving the Meg 2), all the TPC commands indicated by the physical layer signaling received by the first signaling are terminated.

As a sub-embodiment 2 of the first embodiment, the N subsequent LTE timeslots are located in the LTE subframe #i, and the first power is:

P _PUCCH (i)=min{P _CMAX,c (i),P _{0_PUCCH} +PL _c +G(i)+3}[dBm]

Wherein, P _CMAX,c (i), P _{0_PUCCH} , PL _c , G(i) are respectively referred to the description in the above-mentioned sub-embodiment 1.

The essence of the above two sub-embodiments is that the first power is the transmission power of the given format determined according to the LTE scheme, except for the following corrections:

- using the total offset value G(i) instead of g(i)

- Add an additional offset of 3dB.

Example 2

Embodiment 2 exemplifies a schematic diagram in which uplink signaling is located in a PUCCH region, as shown in FIG. In FIG. 2, the black-spot-filled squares identify two PRBs that form one PUCCH region, and the two PRBs are respectively located at two frequency band boundaries of the current system bandwidth, and the two PRBs are respectively located in one LTE subframe. First time slot and second time slot. The indices of the Z PRB pairs in the current system bandwidth are integers from 0 to Z-1, respectively.

In Embodiment 2, the N in the present invention is 2, the J is 1, and the N LTE slots are located in one LTE subframe.

As a sub-embodiment 1 of the second embodiment, the base station sends the second signaling to the UE, and the second signaling indicates L candidate resources, where the L is 2. The first signaling indicates an index of the first selected resource in the L candidate resources, where the first selected resource is composed of the N sub-resource groups in the present invention, and the second signaling is high-layer signaling. The L candidate resources include:

The first candidate resource comprises a first sub-resource and a third sub-resource.

The second candidate resource comprises a second sub-resource and a fourth sub-resource.

As the sub-embodiment 2 of the embodiment 2, the given format in the present invention is a first format, the first signaling includes first information and second information, and the first information indicates the N in the present invention. Whether the frequency band boundary corresponding to the sub-resource group is the upper band boundary (near PRB #Z-1) or the lower band boundary (near PRB #0), and the second information indicates that the index of the first selected resource is compared with the index of the first associated resource. Offset. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, and the first selected resource is composed of the N sub-resource groups. The first associated resource includes a first sub-resource at an upper band boundary of the first slot, and a lower band boundary at the first slot The second sub-resource is included, the third sub-resource is included in the upper frequency band boundary of the second time slot, and the fourth sub-resource is included in the lower frequency band boundary of the second time slot. The first information and the second information collectively indicate the first selected resource.

As a sub-embodiment 3 of Embodiment 2, the given format in the present invention is a first format, and an index of a PRB corresponding to the first selected resource (ie, occupied) is less than or equal to a first index, or greater than or equal to a second index, where the first index is the maximum value of the index of the PRB that can be used for the first format in the first time slot of the target subframe, and the sum of the second index and the first index is equal to the total number of PRBs in the system bandwidth minus one, The target subframe is a transmission subframe of the N uplink signaling. For a detailed description of the first index, refer to the maximum value of the variable m for the PUCCH format {1, 1a, 1b} in section 5.4.3 of TS 36.211.

As the sub-embodiment 4 of the embodiment 2, the first sub-resource and the fourth sub-resource constitute a PUCCH resource in a first format, and the second sub-resource and the third sub-resource constitute a PUCCH resource in a first format. The essence of the foregoing sub-embodiment 4 is that a part of the PUCCH resource of the first format in the two LTE time slots can only be used simultaneously, or at the same time, to avoid being used for transmitting the HARQ-ACK for the short TTI. The above sub-embodiment 4 minimizes the conflict between the sub-resource and the PUCCH resource in the present invention.

Example 3

Embodiment 3 exemplifies a schematic diagram in which the given format is the third format, as shown in FIG. In FIG. 3, the square marked by the thick line is the PRB corresponding to the candidate resource.

In Embodiment 3, the N in the present invention is 1, the J is 2, and the given format is the third format. The base station sends the second signaling to the UE, and the second signaling indicates L candidate resources, where L is 2. The first signaling indicates an index of the first selected resource in the L candidate resources, where the first selected resource is composed of the N sub-resource groups in the present invention, and the second signaling is high-layer signaling. The L candidate resources include {a first candidate resource, a second candidate resource, a third candidate resource, and a fourth candidate resource}.

In Embodiment 3, one candidate resource includes two sub-resources, and the two sub-resources respectively occupy two consecutive PRBs.

As a sub-embodiment 1 of Embodiment 3, the two sub-resources are respectively used to transmit different information bits.

Example 4

Embodiment 4 illustrates a schematic diagram of the scheduling timing of the first signaling, as shown in FIG. Drawing In 4, the square marked by the slash is the transmission time slot of the first signaling.

In the fourth embodiment, the N time slots in the present invention are two LTE time slots located in the same LTE subframe, that is, the scheduling timing relationship between the first signaling and the N time slots is respectively indicated by an arrow A7. And A8 instructions.

The N subsequent LTE slots in the present invention are respectively the Dth slots after the N slots. The D is a positive integer. That is, the scheduling timing relationship of the N uplink signalings in the present invention and the N transport block groups in the present invention are respectively indicated by arrows R7 and R8.

As a sub-embodiment 1 of the embodiment 4, the D is 4.

As sub-embodiment 1 of embodiment 4, the D is 6

Example 5

Embodiment 5 exemplifies a transmission flow chart of the second signaling, as shown in FIG. In FIG. 5, the base station N3 is a maintenance base station of the serving cell of the UE U4.

The base station N3 transmits the second signaling in step S30. The UE U4 receives the second signaling in step S40, the second signaling indicating L candidate resources, and the L is a positive integer.

In the embodiment 5, the first signaling indicates an index of the first selected resource in the L candidate resources, where the first selected resource is composed of the N sub-resource groups in the present invention, and the second signaling is a high-level letter. For example, one of the candidate resources includes one of the sub-resource groups in the N subsequent LTE slots.

As a sub-embodiment 1 of Embodiment 5, the second signaling indicates L resource indexes, and the L indexes respectively correspond to the L candidate resources. The resource index is a non-negative integer.

Example 6

Embodiment 6 exemplifies a structural block diagram of a processing device in one UE, as shown in FIG. In FIG. 6, the UE processing apparatus 200 is mainly composed of a first receiving module 201, a second receiving module 202, and a first sending module 203.

The first receiving module 201 is configured to receive first signaling, where the first signaling schedules transmission of N transport block groups. The second receiving module 202 is configured to receive N transport block groups, where the N transport block groups are respectively sent in N LTE time slots. The first sending module 203 is configured to separately send N uplink signalings in the N sub-resource groups, where the N sub-resource groups are respectively located in N subsequent LTE slots, where the N uplink signaling respectively indicate the N transmissions Whether the transport block in the block group is received correctly.

In Embodiment 6, the first signaling is physical layer signaling, and the N is a positive integer less than 3. One of the transport block groups includes G transport blocks, and the G is a positive integer. One of the sub-resource groups includes J sub-resources, and the format of one of the sub-resources is a part of a given format within one LTE time slot, and the J is 1 or 2. The given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

As sub-embodiment 1 of Embodiment 6, the first signaling is one of DCI formats {1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D}.

As a sub-embodiment 2 of Embodiment 6, the RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs. For a normal CP (Cyclic Prefix), W is 36, and for extended CP, the W is 32.

Example 7

Embodiment 7 exemplifies a structural block diagram of a processing device in a base station, as shown in FIG. In FIG. 7, the base station processing apparatus 300 is mainly composed of a second sending module 301, a third sending module 302, and a third receiving module 303.

The second sending module 301 is configured to send first signaling, where the first signaling schedules transmission of N transport block groups. The third sending module 302 is configured to send N transport block groups, and the N transport block groups are respectively sent in N LTE time slots. The third receiving module 303 is configured to respectively receive N uplink signalings in the N sub-resource groups, where the N uplink signalings respectively indicate whether the transport blocks in the N transport block groups are correctly received.

In Embodiment 7, the first signaling is physical layer signaling, and the N is a positive integer. One of the transport block groups includes G transport blocks, and the G is a positive integer. One of the sub-resource groups includes J sub-resources, and the format of one of the sub-resources is a part of a given format within one LTE time slot, and the J is 1 or 2. The given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.

As a sub-embodiment 1 of Embodiment 7, one of the uplink signaling includes G bits, which respectively indicate whether G transport blocks in the corresponding transport block group are correctly decoded.

As a sub-embodiment 2 of Embodiment 7, one of the uplink signaling includes 1 bit, and the 1 bit indicates whether all of the G transport blocks in the corresponding transport block group are correctly decoded.

One of ordinary skill in the art can appreciate that all or part of the above steps can be completed by a program to instruct related hardware, and the program can 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 also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module. The application is not limited to any specific combination of software and hardware. The UE or the mobile terminal in the present invention includes, but is not limited to, a wireless communication device such as a mobile phone, a tablet computer, a notebook, an internet card, an in-vehicle communication device, and a wireless sensor. The base station in the present invention includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method in a UE supporting low-latency wireless communication, comprising the steps of:

- Step A. Receiving first signaling, the first signaling scheduling transmission of N transport block groups

- Step B. Receiving N transport block groups, the N transport block groups are respectively sent in N LTE time slots

- Step C. Send N uplink signalings in the N sub-resource groups, the N sub-resource groups are respectively located in N subsequent LTE slots, and the N uplink signalings respectively indicate the N transport block groups. Whether the transport block is received correctly;

The first signaling is physical layer signaling, and the N is a positive integer; one of the transport block groups includes G transport blocks, and the G is a positive integer; one of the sub-resource groups includes J sub-resources, one of the The format of the sub-resource is the portion of the given format within an LTE time slot, the J being 1 or 2; the given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- Second format: LTE PUCCH format {2, 2a, 2b}.

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.
The method of the UE for supporting low-latency wireless communication according to claim 1, wherein the step A further comprises the following steps:

Step A0. Receive second signaling, the second signaling indicating L candidate resources, the L being a positive integer.

The first signaling indicates an index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups, and the second signaling is high-layer signaling, and the candidate is The resource includes one of the sub-resource groups in the N subsequent LTE slots.
The method of claim 1, wherein the given format is a first format, the first signaling includes first information and second information, and the first information indicates The frequency band boundary corresponding to the N sub-resource groups, and the second information indicates an offset of the index of the first selected resource compared to the index of the first associated resource. The first associated resource is determined by an index of a first channel unit occupied by the first signaling, where the first selected resource is composed of the N sub-resource groups, and the first associated resource is in the N subsequent LTE slots. Each of the frequency band boundaries includes one of the sub-resource groups; the RE occupied by the first signaling is composed of one or more of the channel units, and the channel unit includes W REs, and the W is greater than 10. Positive integer.
The method of the UE for supporting low-latency wireless communication according to any one of claims 1 to 3, wherein the step C further comprises the following steps:

Step C0. Determine that the transmit power of the uplink signaling is the first power.

Wherein the first power varies linearly with a change in the total offset value, which is a sum of adjusted powers indicated by each TPC command in the target TPC command set, the target TPC command set including After the reset, the UE ends all TPC commands indicated by the physical layer signaling received by the first signaling.
The method of claim 4, wherein the first power is a transmit power of the given format determined according to an LTE scheme, except for the following modifications:

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.
A method in a base station supporting low-latency wireless communication, comprising the steps of:

- Step A. Sending first signaling, the first signaling scheduling transmission of N transport block groups

- Step B. Send N transport block groups, the N transport block groups are respectively sent in N LTE time slots

- Step C. Receiving N uplink signalings respectively in N subsequent LTE timeslots, the N uplink signalings respectively indicating whether the transport blocks in the N transport block groups are correctly received;

The first signaling is physical layer signaling, and the N is a positive integer; one of the transport block groups includes G transport blocks, and the G is a positive integer; one of the sub-resource groups includes J sub-resources, one of the The format of the sub-resource is the portion of the given format within an LTE time slot, the J being 1 or 2; the given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- second format: LTE PUCCH format {2, 2a, 2b};

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.
The method in a base station supporting low-latency wireless communication according to claim 6, wherein the step A further comprises the following steps:

- Step A0. Sending second signaling, the second signaling indicating L candidate resources, the L is Positive integer

The first signaling indicates an index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups, and the second signaling is high-layer signaling, and the candidate is The resource includes one of the sub-resource groups in the N subsequent LTE slots.
The method according to claim 6, wherein the given format is a first format, and the first signaling includes first information and second information, where the first information indicates Determining a frequency band boundary corresponding to the N sub-resource groups, where the second information indicates an offset of an index of the first selected resource compared to an index of the first associated resource; the first channel occupied by the first signaling by the first signaling The index of the unit determines that the first selected resource is composed of the N sub-resource groups, and the first associated resource includes one of the sub-resource groups respectively at each of the N subsequent LTE slots; The RE occupied by the OR is composed of one or more of the channel elements, the channel unit including W REs, and the W is a positive integer greater than 10.
The method of the base station supporting low-latency wireless communication according to any one of claims 6 to 8, wherein the step C further comprises the following steps:

Step C0. determining that the transmit power of the uplink signaling is the first power;

Wherein the first power varies linearly with a change in the total offset value, which is a sum of adjusted powers indicated by each TPC command in the target TPC command set, the target TPC command set including After the reset, the UE ends all TPC commands indicated by the physical layer signaling received by the first signaling.
The method in a base station supporting low-latency wireless communication according to claim 9, wherein the first power is a transmission power of the given format determined according to an LTE scheme, except for the following corrections:

- use the total offset value instead of g(i)

- Add an additional offset of 3dB.
A user equipment supporting low-latency wireless communication, comprising the following modules:

The first module is configured to receive the first signaling, and the first signaling schedules the sending of the N transport block groups

a second module: for receiving N transport block groups, where the N transport block groups are respectively sent in N LTE time slots

The third module is configured to separately send N uplink signalings in the N sub-resource groups, where the N The sub-resource groups are respectively located in N subsequent LTE time slots, and the N uplink signaling signals respectively indicate whether the transport blocks in the N transport block groups are correctly received;

The first signaling is physical layer signaling, and the N is a positive integer; one of the transport block groups includes G transport blocks, and the G is a positive integer; one of the sub-resource groups includes J sub-resources, one of the The format of the sub-resource is the portion of the given format within an LTE time slot, which is 1 or 2. The given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- second format: LTE PUCCH format {2, 2a, 2b};

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.
A base station device supporting low-latency wireless communication, comprising the following modules:

The first module is configured to send the first signaling, and the first signaling schedules the sending of the N transport block groups

a second module: configured to send N transport block groups, where the N transport block groups are respectively sent in N LTE time slots

The third module is configured to receive N uplink signalings respectively in the N subsequent LTE timeslots, where the N uplink signalings respectively indicate whether the transport blocks in the N transport block groups are correctly received;

The first signaling is physical layer signaling, and the N is a positive integer; one of the transport block groups includes G transport blocks, and the G is a positive integer; one of the sub-resource groups includes J sub-resources, one of the The format of the sub-resource is the portion of the given format within an LTE time slot, the J being 1 or 2; the given format is one of the following:

- First format: LTE PUCCH format {1, 1a, 1b}

- second format: LTE PUCCH format {2, 2a, 2b};

- Third format: LTE PUCCH format 3

- Fourth format: PUCCH format for supporting more than 20 ACK/NACK bits.