CN105992361B

CN105992361B - Scheduling method and device in enhanced CA

Info

Publication number: CN105992361B
Application number: CN201510086652.6A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2015-02-23
Filing date: 2015-02-23
Publication date: 2019-12-20
Anticipated expiration: 2035-02-23
Also published as: CN105992361A

Abstract

The invention provides a scheduling method and a scheduling device in enhanced CA. The UE receives a first signaling and a second signaling in the first step, wherein the first signaling indicates a K1 integer set, and the second signaling schedules uplink transmission in K2 serving cells. In step two, according to the scheduling of the second signaling, uplink wireless signals are respectively sent on the serving cells in the first cell set. Receiving K3 HARQ _ ACK groups in step three, wherein the K3 HARQ _ ACK groups are in one-to-one correspondence with the uplink wireless signals carried on K3 serving cells in the first cell set. Wherein the PHICH resources occupied by the K3 HARQ _ ACK groups are configured by the first signaling and the second signaling. The scheme of the invention avoids PHICH resource conflict caused by excessive uplink carrier number or rough granularity of resource scheduling. In addition, the invention can reduce the redundancy overhead of the downlink control signaling and improve the transmission efficiency.

Description

Scheduling method and device in enhanced CA

Technical Field

The present invention relates to a scheme of CA (Carrier Aggregation), and in particular, to a scheme of PHICH (Physical Hybrid-ARQ indicator channel) resource allocation in CA based on LTE (Long Term Evolution).

Background

In LTE system R (Release) 10 established by 3GPP (3rd Generation Partner Project), CA is introduced as one of the key technologies, and its core idea is that a User Equipment (UE-User Equipment) can simultaneously operate on multiple carriers, and CA can increase the peak rate of a single UE. In LTE CA, a UE is configured with one Pcell (Primary Cell) and one or more scells (Secondary cells). For FDD (Frequency Division Duplex) LTE, one serving cell includes at least one downlink carrier of { one downlink carrier, one uplink carrier }. For TDD (Time Duplex Division) LTE, one serving cell includes one carrier. In LTE R10, a UE supporting CA can be configured with 5 serving cells at most, and only one serving cell can be scheduled by one DCI (Downlink Control Information). In the LTE system, HARQ (Hybrid Automatic repeat request) _ ACK (response) for indicating whether a TB (Transport Block) transmitted on a PUSCH (Physical Uplink Shared Channel) is correctly received is transmitted on a PHICH (Physical HARQ Indicator Channel), a PHICH resource occupied by HARQ _ ACK is commonly defined by { PHICH Group number (Group number), PHICH intra-Group orthogonal sequence index }, and for a given TB, the occupied PHICH resource is (specifically described with reference to section 9.1.2 in TS 36.213):

equation 1

Equation 2

Wherein,is the number of the PHICH group,is an orthogonal sequence index, n_DMRSObtained by mapping a Demodulation Reference Signal (DMRS) in a Physical Downlink Control Channel (PDCCH) of a last received uplink DCI format associated with the given TB,is a spreading factor. I is_{PRB_RA}Is the lowest PRB index (or plus 1) occupied by the given TB on the first slot of PUSCH,is the number of PHICH groups, I, configured for higher layer signaling_PHICHIs the adjustment parameter (0 for other scenarios) employed by TDD UL/DL frame structure # 0.

In LTE R13, one research topic is to increase the number of cells supported by CA to a maximum of 32 (the topic is abbreviated as eCA in the present invention). Although the maximum number of uplink carriers may be less than 32, one reasonable expectation is that the maximum number of uplink carriers supported in eCA is greater than the maximum number of uplink carriers supported by CA.

Disclosure of Invention

The inventors have conducted investigationsIt was found that in eCA, when HARQ _ ACKs for multiple uplink carriers (far beyond what is supported by conventional CA) are sent on the same downlink carrier, one possible problem is that the probability of PHICH collision increases (i.e. only by n)_DMRSAnd I_{PRB_RA}Collision cannot be avoided). The inventors further research and find that, in order to reduce the overhead of DCI and reduce the number of blind detections, an eCA may employ a "multi-carrier scheduling" technique in which one DCI schedules multiple carriers, in order to reduce the load size (Payload size) of the DCI, the granularity of resource allocation may be coarser than that of the conventional CA, for example, the system bandwidth of the entire carrier is divided into fewer Sub-bands (Sub-bands), and the granularity of resource allocation in the frequency domain is one Sub-band. In the above scheme, I is continuously utilized_{PRB_RA}Parameters that are a PHICH resource configuration may cause PHICH collision to increase. One extreme scenario is that the granularity of resource allocation is the overall system bandwidth (i.e., the overall system bandwidth of a carrier is scheduled or not), I_{PRB_RA}Is 0 or 1, the function of PHICH resource configuration is lost.

Based on the above analysis, the present invention provides a solution. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE of the present application may be applied to the base station, and vice versa.

The invention discloses a method in UE, which comprises the following steps:

-step a. receiving a first signaling indicating a K1 integer set and a second signaling scheduling uplink transmission in K2 serving cells

-step b. transmitting uplink radio signals separately on each serving cell of the first set of cells according to the scheduling of the second signaling

Step C, receiving K3 HARQ _ ACK groups, wherein the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode.

Wherein the first signaling is higher layer signaling, the first set of cells is K3 serving cells among the K2 serving cells, and K1 is a positive integer. The K2 is a positive integer and the K3 is a positive integer less than or equal to K2. PHICH resources occupied by the K3 HARQ _ ACK groups are configured by first signaling and second signaling, the PHICH resources are jointly determined by a PHICH group number and an orthogonal sequence index within the PHICH group, the integer set comprises L non-negative integers, and L is a positive integer. One HARQ _ ACK group includes 1 or 2 HARQ _ ACKs.

As an embodiment, one uplink radio signal includes one or two TBs, where each TB corresponds to one HARQ _ ACK. As an embodiment, one HARQ _ ACK indicates whether one TB is correctly received. As an embodiment, the second signaling is DCI for scheduling uplink transmission. As an embodiment, the first signaling is RRC (radio resource Control) signaling. As an embodiment, the first signaling also indicates the number of PHICH groupsAs an embodiment, the K3 HARQ _ ACK groups are transmitted in a given subframe.

As one embodiment, the uplink wireless signal is a PUSCH signal.

The essence of the method is that the base station uses high-layer signaling to assist in configuring the PHICH resource occupied by the HARQ _ ACK in the PHICH spaceAnd (4) defining.

Specifically, according to an aspect of the present invention, the step B further includes a step B1, and the step C further includes a step C1:

-step b1. maintaining zero transmission power on time-frequency resources scheduled for second signaling on the second set of cells

-step c1. receiving K4 HARQ _ ACK groups, the K4 HARQ _ ACK groups being in one-to-one correspondence with K4 serving cells in the second set of cells.

Wherein the K2 is greater than 1, the K3 is less than the K2, the second set of cells is K4 serving cells excluding the K3 serving cells from the K2 serving cells, and the K4 is equal to K2 minus K3.

As an embodiment, the UE performs an LBT (Listen Before Talk) operation on the second set of cells to determine not to perform scheduling of the second signaling on the second set of cells. As an embodiment, the K4 HARQ _ ACK groups and the K3 HARQ _ ACK groups are transmitted in the same given subframe.

The essence of the above aspect is that for K2 serving cells scheduled for the second signaling, the UE autonomously determines whether to perform scheduling of the second signaling on each serving cell.

Specifically, according to one aspect of the present invention, it is characterized in that the PHICH resource occupied by the HARQ _ ACK group for the transport block scheduled by the second signaling is determined with the assistance of the target integer set. The K1 is greater than 1 and the first field is included in the second signaling. Wherein the first field indicates an index of the target integer set among the K1 integer sets.

Specifically, according to one aspect of the present invention, it is characterized in that PHICH resources occupied by HARQ _ ACK group for transport block scheduled by the second signaling are determined with the aid of a target integer set, the K1 is equal to 1 and the target integer set is the integer set.

The two aspects respectively describe two using methods of the K1 integer sets in the first signaling, the former is used in combination with the second signaling and can dynamically adjust the PHICH resource configuration, and the latter is used separately and semi-statically adjusts the PHICH resource configuration. The former is more flexible and the latter saves the overhead of dynamic signaling.

Specifically, according to one aspect of the present invention, it is characterized in that the PHICH resource occupied by a given HARQ _ ACK is determined with the aid of transport block indexes of the transport block for which the given HARQ _ ACK is intended in all the transport blocks scheduled by the second signaling. The given HARQ _ ACK is any one HARQ _ ACK received by the UE for a transport block scheduled by second signaling.

As an embodiment, the given HARQ _ ACK is any one of the K3 HARQ _ ACK groups. As an embodiment, the given HARQ _ ACK is any one of the K3 HARQ _ ACK groups and the K4 HARQ _ ACK groups.

As an embodiment, the transport block index is equal to the order in which the scheduling information of the target transport block appears in all the scheduling information in the second signaling plus a fixed offset value, where the scheduling information includes one or more of { MCS (Modulation and Coding Scheme ), } (Redundancy Version), RV (New Data Indicator), and NDI (New Data Indicator). As a sub-embodiment, the fixed offset value is 0 (i.e., the minimum value of the transport block index is 1), or-1 (i.e., the minimum value of the transport block index is 0).

As an embodiment, the transport block index is an index of the target transport block in a transport block sequence, and the transport block sequence is formed by sorting all transport blocks scheduled by the second signaling from small to large according to a cell index of a bearer serving cell, where if there are 2 scheduled transport blocks on the same bearer serving cell, a first TB is arranged before a second TB.

As one embodiment, the smallest transport block index is 0. As an embodiment, the smallest transport block index is 1.

In the above aspect of the present invention, the transport block index is introduced as a parameter of PHICH resource allocation, which has the advantage of avoiding sending separate signaling for PHICH resource allocation for each transport block (i.e. the transport blocks scheduled by the second signaling can share some PHICH resource allocation signaling), and saving signaling overhead. The following two aspects of the present invention respectively provide a scheme for PHICH resource allocation using the K1 integer sets and the transport block index in the first signaling.

Specifically, according to one aspect of the present invention, it is characterized in that the mapping relationship between the PHICH group number and the first index of the PHICH resource occupied by the given HARQ _ ACK reuses the PHICH group number to I in the LTE system_{PRB_RA}The mapping relationship of (2). Wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended.

Of the above aspectThe essence is as follows: i is_{PRB_RA}The method does not depend on the PRB index occupied by the transmission block, but is configured by explicit signaling, and the problem of PHICH collision caused by coarser scheduling granularity is avoided. In addition, the redundancy overhead of explicit signaling is reduced by using the transport block index.

As an embodiment, the mapping relationship between the orthogonal sequence index in the PHICH group and the first index of the PHICH resource occupied by the given HARQ _ ACK reuses the orthogonal sequence index in the PHICH group to I in the LTE system_{PRB_RA}The mapping relationship of (2). Wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended.

Specifically, according to an aspect of the present invention, the PHICH resource occupied by the given HARQ _ ACK is determined according to an LTE scheme incorporating at least one revision of:

-revision one.Is the number of elements in the target integer set,the corresponding PHICH group number is equal to the second in the target integer setAn element

Revision two.I_{PRB_RA}Is an integer resulting from adding the transport block index and offset of the transport block for which the given HARQ _ ACK is intended. The offset is an integer obtained by dividing the lowest PRB index occupied by the transport block with the smallest transport block index in the first time slot of the PUSCH by K5, wherein K5 is a positive integer

-revision three.n_DMRSAnd determining according to the cyclic shift domain of the DMRS aiming at the transmission block with the smallest transmission block index in the second signaling.

The essence of revision one above is: and indicating a PHICH group number occupied by HARQ _ ACK aiming at a transmission block scheduled by the second signaling through explicit signaling, wherein the explicitly indicated PHICH group number forms a logical PHICH space, and the UE determines PHICH resources in the logical PHICH space according to the determined PHICH group number and the orthogonal sequence index. By the revision one, the base station can select the PHICH group which is relatively idle for the UE to be used for HARQ _ ACK feedback, so that PHICH collision caused by the fact that the UE searches all PHICH groups is avoided.

The second modification alleviates the problem of PHICH resource conflict caused by coarser granularity of resource allocation.

The above revision three avoids that the DMRS resource allocation of each transport block is subject to scheduling restrictions due to the PHICH resource allocation.

As an embodiment, K5 is 1, that is, the offset is the lowest PRB index occupied by the transport block with the smallest transport block index in the first slot of PUSCH. As an embodiment, the K5 is the number of PRBs included in the minimum frequency-domain granularity of the second signaling scheduling PUSCH.

Specifically, according to an aspect of the present invention, it is characterized in that all TBs of the second signaling schedule share the same DMRS cyclic shift and OCC (Orthogonal cover Code) index.

The above aspect reduces the payload size of the second signaling, improving transmission efficiency.

The invention discloses a method in a base station, which comprises the following steps:

-step a. transmitting a first signaling indicating a K1 integer set and a second signaling scheduling uplink transmission in K2 serving cells

-step b. receiving uplink radio signals on each serving cell of the first set of cells, respectively, according to the scheduling of the second signaling.

Step C, K3 HARQ _ ACK groups are sent, and the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode.

As an embodiment, the second signaling indicates the number of TBs scheduled for each of the K2 serving cells, the number of TBs being 1 or 2.

-step b1. detecting uplink radio signals on the time-frequency resources scheduled by the second signaling of each serving cell of the second set of cells

-step c1. sending K4 HARQ _ ACK groups, said K4 HARQ _ ACK groups being in one-to-one correspondence with K4 serving cells in the second set of cells.

Specifically, according to one aspect of the present invention, it is characterized in that the PHICH resource occupied by the HARQ _ ACK group for the transport block scheduled by the second signaling is determined with the assistance of the target integer set. The K1 is greater than 1 and a first field is included in second signaling, or the K1 is equal to 1 and the target set of integers is the set of integers. Wherein the first field indicates an index of the target integer set among the K1 integer sets.

Specifically, according to one aspect of the present invention, it is characterized in that the PHICH resource occupied by a given HARQ _ ACK is determined with the aid of transport block indexes of the transport block for which the given HARQ _ ACK is intended in all the transport blocks scheduled by the second signaling. The given HARQ _ ACK is any one HARQ _ ACK sent by the base station for a transport block scheduled by second signaling.

Revision three._nDMRSAnd determining according to the cyclic shift domain of the DMRS aiming at the transmission block with the smallest transmission block index in the second signaling.

In particular, according to one aspect of the invention, it is characterized in that all TBs of the second signaling schedule share the same DMRS cyclic shift and OCC index.

The invention discloses a user equipment, which is characterized by comprising:

a first module: for receiving a first signaling indicating a set of K1 integers and a second signaling scheduling uplink transmissions in K2 serving cells

A second module: and the uplink wireless signal is respectively sent on each serving cell in the first cell set according to the scheduling of the second signaling.

A third module: the system is used for receiving K3 HARQ _ ACK groups, and the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode.

As an embodiment, the above user equipment is characterized in that the second module is further configured to maintain zero transmission power on time-frequency resources scheduled by the second signaling on the second set of cells, and the third module is further configured to receive K4 HARQ _ ACK groups, where the K4 HARQ _ ACK groups correspond to K4 serving cells in the second set of cells one to one. Wherein the K2 is greater than 1, the K3 is less than the K2, the second set of cells is K4 serving cells excluding the K3 serving cells from the K2 serving cells, and the K4 is equal to K2 minus K3.

As an embodiment, the above user equipment is characterized in that PHICH resources occupied by the HARQ _ ACK group for the transport block scheduled by the second signaling are determined with the assistance of the target integer set. The K1 is greater than 1 and a first field is included in second signaling, or the K1 is equal to 1 and the target set of integers is the set of integers. Wherein the first field indicates an index of the target integer set among the K1 integer sets.

As an embodiment, the above user equipment is characterized in that the PHICH resource occupied by a given HARQ _ ACK is determined with the aid of transport block indexes of the transport block for which the given HARQ _ ACK is intended in all transport blocks scheduled by the second signaling. The given HARQ _ ACK is any one HARQ _ ACK received by the UE for a transport block scheduled by second signaling.

As an embodiment, the user equipment is characterized in that the mapping relationship between the PHICH group number and the first index of the PHICH resource occupied by the given HARQ _ ACK reuses the PHICH group number to I in the LTE system_{PRB_RA}The mapping relationship of (2). Wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended.

As an embodiment, the above user equipment is characterized in that the PHICH resource occupied by the given HARQ _ ACK is determined according to an LTE scheme incorporating at least one revision:

The invention discloses a base station device, which is characterized by comprising:

a first module: used for sending a first signaling and a second signaling, the first signaling indicates K1 integer sets, and the second signaling schedules uplink sending in K2 serving cells

A second module: and the uplink wireless signal is respectively received on each serving cell in the first cell set according to the scheduling of the second signaling.

A third module: the method is used for sending K3 HARQ _ ACK groups, and the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode.

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

avoidance of PHICH resource collision due to excessive number of uplink carriers

Avoidance of PHICH resource conflicts due to coarser granularity of resource allocation

-reducing redundancy overhead due to information in DCI for PHICH resource allocation.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 shows a flow diagram of HARQ _ ACK transmission according to one embodiment of the invention;

FIG. 2 shows a logical PHICH space diagram according to an embodiment of the present invention;

fig. 3 shows a schematic diagram of a part of bits in the second signaling according to an embodiment of the invention;

fig. 4 shows a block diagram of a processing device used in a UE according to an embodiment of the invention;

fig. 5 shows a block diagram of a processing device for use 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 HARQ _ ACK transmission, as shown in fig. 1. In fig. 1, base station N1 maintains the serving cell for UE U2.

For the base station N1, first signaling indicating K1 integer sets and second signaling scheduling uplink transmission in K2 serving cells are transmitted in step S11. In step S12, uplink wireless signals are received on each serving cell in the first set of cells according to the scheduling of the second signaling. In step S13, K3 HARQ _ ACK groups are sent, where the K3 HARQ _ ACK groups are in one-to-one correspondence with the uplink wireless signals carried on K3 serving cells in the first cell set.

For the UE U2, first signaling and second signaling are received in step S21. In step S22, according to the scheduling of the second signaling, uplink wireless signals are respectively transmitted on each serving cell in the first cell set. The K3 HARQ _ ACK groups are received in step S23.

In embodiment 1, the first signaling is higher layer signaling, the first cell set is K3 serving cells among the K2 serving cells, and K1 is a positive integer. The K2 is a positive integer and the K3 is a positive integer less than or equal to K2. PHICH resources occupied by the K3 HARQ _ ACK groups are configured by first signaling and second signaling, the PHICH resources are jointly determined by a PHICH group number and an orthogonal sequence index within the PHICH group, the integer set comprises L non-negative integers, and L is a positive integer. One HARQ _ ACK group includes 1 or 2 HARQ _ ACKs.

As sub-embodiment 1 of embodiment 1, the first signaling is RRC signaling and the second signaling is DCI.

As sub-embodiment 2 of embodiment 1, PHICH resources occupied by HARQ _ ACK group for transport block scheduled by second signaling are determined with assistance of target integer set. The K1 is greater than 1 and a first field is included in second signaling, or the K1 is equal to 1 and the target set of integers is the set of integers. Wherein the first field indicates an index of the target integer set among the K1 integer sets.

As sub-embodiment 3 of embodiment 1, for any given HARQ _ ACK in the K3 HARQ _ ACK groups, the mapping relationship between the PHICH group number and the first index of the occupied PHICH resource reuses the PHICH group number to I in the LTE system_{PRB_RA}The mapping relationship of (2). Wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended. Namely:

equation 3

Wherein,is the PHICH group number, I, occupied by the given HARQ _ ACK_firstIs a first index, T is an integer in the target set of integers, n_DMRS，I_PHICHReference is made to the above formula 1.

As sub-embodiment 4 of embodiment 1, for any given HARQ _ ACK in the K3 HARQ _ ACK groups, the mapping relationship between the orthogonal sequence index in PHICH group and the first index of the PHICH resource occupied thereby reuses the orthogonal sequence index in PHICH group to I in the LTE system_{PRB_RA}The mapping relationship of (2). Wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended. Namely:

equation 4

Wherein,is the orthogonal sequence index, I, in the PHICH group occupied by the given HARQ _ ACK_firstIs a first index, T is an integer in the target set of integers, n_DMRS，Reference is made to the above formula 1.

Example 2

Embodiment 2 illustrates a logical PHICH space diagram, as shown in fig. 2. In embodiment 2, the PHICH resource occupied by a given HARQ _ ACK described in the present invention is determined according to the LTE scheme combined with the following revision:

-revision one.Is the number of elements in the target integer set,the corresponding PHICH group number is equal to the second in the target integer setAnd (4) each element.

As shown in FIG. 2, the number of PHICH groups in the PHICH space currently configured by LTE system is G (i.e., in LTE, the number of PHICH groups is G)) In the present invention, the target integer set includes L integers { g _1, g _2, …, g _ L }. Selecting PHICH group # (G _1) - # (G _ L) from PHICH group #0- # (G-1) to form a logical PHICH space: the logical group numbers of PHICH group # (g _1) - # (g _ L) are #0- # (L-1), respectively, and PHICH resource allocation occupied by a given HARQ _ ACK is performed in the logical PHICH space. As aAn embodiment of the PHICH resource allocation:

equation 5

Equation 6

Wherein a PHICH logical group number of the PHICH group occupied by the given HARQ _ ACK in the logical PHICH space is #Is the orthogonal sequence index within the PHICH group occupied by the given HARQ _ ACK,I_{PRB_RA}，n_DMRS，I_PHICH，reference is made to the above formula 1. K5 is a positive integer, I_tIs 0 or the transport block index in the present invention.

Sub-examples 1, n as example 2_DMRSDetermining according to the cyclic shift domain of DMRS in the second signaling for the transport block with the smallest transport block index, i.e. all TBs scheduled by the second signaling share the same n_DMRS。

As sub-example 2 of example 2, the K5 is 1.

Example 3

Embodiment 3 illustrates a schematic diagram of a part of bits in the second signaling in the present invention, as shown in fig. 3.

In embodiment 3, the second signaling includes a first bit set, i.e. K2 bits — shown in { B _1, B _2, …, B _ K2} in fig. 3, where the K2 bits correspond to K2 serving cells scheduled by the second signaling one to one. Where each bit is used to indicate whether 1 TB or 2 TBs are scheduled on the corresponding serving cell.

As sub-embodiment 1 of embodiment 3, the second signaling further includes a second set of bits, i.e., N sets of scheduling information, where N is equal to or greater than K2 and equal to or less than 2 times K2. As shown in fig. 3, a set of the scheduling information c (X) _ Y corresponds to the xth serving cell of the K2 serving cells arranged in the order of the cell indexes from small to large, if Y is 0, c (X) _ Y is for the first TB, and if Y is 1, c (X) _ Y is for the second TB.

The scheduling information comprises one or more of { MCS, RV, NDI }. And the N groups of scheduling information are arranged according to the sequence from small to large of the cell indexes of the corresponding service cells. And if the two groups of scheduling information correspond to a serving cell, the scheduling information corresponding to the first TB is placed in front.

In the conventional LTE, the UE distinguishes the number of scheduled TBs according to the difference of DCI formats (DCI format 0 schedules 1 TB, DCI format 4 schedules 2 TBs), and for DCI of "multi-cell scheduling", the conventional LTE scheme is no longer applicable. Embodiment 3 ensures that the base station and the UE have a common understanding of the serving cell corresponding to the scheduling information, thereby avoiding confusion of understanding.

Example 4

Embodiment 4 illustrates a block diagram of a processing device used in a UE, as shown in fig. 4. In fig. 4, the UE processing apparatus 200 is composed of a receiving module 201, a transmitting module 202 and a receiving module 203.

The receiving module 201 is configured to receive a first signaling and a second signaling, where the first signaling indicates K1 integer sets, and the second signaling is scheduled to be sent on the uplink of K2 serving cells. The sending module 202 is configured to send an uplink wireless signal on each serving cell in the first cell set according to the scheduling of the second signaling. The receiving module 203 is configured to receive K2 HARQ _ ACK groups, where the K2 HARQ _ ACK groups correspond to the scheduled radio signals on the K2 serving cells one to one.

In embodiment 4, the first signaling is RRC layer signaling, and K1 is a positive integer. The K2 is a positive integer and the K3 is a positive integer less than or equal to K2. PHICH resources occupied by the K2 HARQ _ ACK groups are configured by first signaling and second signaling, the PHICH resources are jointly determined by a PHICH group number and an orthogonal sequence index within the PHICH group, the integer set comprises L non-negative integers, and L is a positive integer. One HARQ _ ACK group includes 1 or 2 HARQ _ ACKs.

As sub-embodiment 1 of embodiment 4, all TBs of the second signaling schedule share the same cyclic shift of DMRS and OCC index.

Example 5

Embodiment 5 illustrates a block diagram of a processing apparatus used in a base station, as shown in fig. 5. In fig. 5, the base station processing apparatus 300 is composed of a transmitting module 301, a receiving module 302 and a transmitting module 303.

The sending module 301 is configured to send a first signaling and a second signaling, where the first signaling indicates K1 integer sets, and the second signaling is scheduled to be sent in uplink in K2 serving cells. The receiving module 302 is configured to receive an uplink wireless signal on each serving cell in the first cell set according to the scheduling of the second signaling. The sending module 303 is configured to send K3 HARQ _ ACK groups, where the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 serving cells in the first cell set in a one-to-one manner.

In embodiment 5, the first signaling is higher layer signaling, the first cell set is K3 serving cells among the K2 serving cells, and the K1 is a positive integer. The K2 is a positive integer and the K3 is a positive integer less than or equal to K2. PHICH resources occupied by the K3 HARQ _ ACK groups are configured by first signaling and second signaling, the PHICH resources are jointly determined by a PHICH group number and an orthogonal sequence index within the PHICH group, the integer set comprises L non-negative integers, and L is a positive integer. One HARQ _ ACK group includes 1 or 2 HARQ _ ACKs.

As sub-embodiment 1 of embodiment 5, the PHICH resource occupied by a given HARQ _ ACK for any one transport block scheduled for the second signaling is assisted by the following two parameters:

set of target integers

Transport block index of the transport block for which the given HARQ ACK is intended in all transport blocks scheduled by the second signaling.

Wherein the K1 is greater than 1 and a first field is included in the second signaling indicating an index of the target set of integers in the K1 set of integers.

As sub-embodiment 2 of embodiment 5, PHICH resources occupied by HARQ _ ACK group for transport block scheduled by second signaling are determined with assistance of target integer set. The K1 is 4 and a first field of 2 bits is included in the second signaling to indicate the index of the target integer set among the K1 integer sets.

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 in the present invention includes but is not limited to a mobile phone, a tablet computer, a notebook, a network card, 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

1. A method in a UE, comprising the steps of:

-step a. receiving a first signaling indicating a K1 integer set and a second signaling scheduling uplink transmissions in K2 serving cells;

-step b. transmitting uplink radio signals on each serving cell of the first set of cells, respectively, according to the scheduling of the second signaling;

step C, receiving K3 HARQ _ ACK groups, wherein the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode;

wherein the first signaling is higher layer signaling, the first set of cells is K3 serving cells among the K2 serving cells, and K1 is a positive integer; the K2 is a positive integer, the K3 is a positive integer less than or equal to K2; the PHICH resources occupied by the K3 HARQ _ ACK groups are configured by a first signaling and a second signaling, the PHICH resources are jointly determined by a PHICH group number and an orthogonal sequence index in the PHICH group, the integer set comprises L non-negative integers, and L is a positive integer; one HARQ _ ACK group includes 1 or 2 HARQ _ ACKs; the PHICH resource occupied by the HARQ _ ACK group aiming at the transmission block scheduled by the second signaling is determined by the assistance of a target integer set; the K1 is greater than 1 and a first field is included in second signaling, or the K1 is equal to 1 and the target set of integers is the set of integers; a first field indicating an index of the target set of integers in the K1 sets of integers; the PHICH resource occupied by the given HARQ _ ACK is determined by the transmission block index of the transmission block aimed by the given HARQ _ ACK in all the transmission blocks scheduled by the second signaling in an auxiliary mode; the given HARQ _ ACK is any one HARQ _ ACK received by the UE for a transport block scheduled by second signaling.

2. The method of claim 1, wherein said step B further comprises the step B1, and said step C further comprises the step C1:

-step b1. maintaining zero transmission power on time-frequency resources scheduled by the second signaling on the second set of cells;

-step c1. receiving K4 HARQ _ ACK groups, the K4 HARQ _ ACK groups corresponding one-to-one to K4 serving cells in the second set of cells;

3. The method of claim 1, wherein a mapping of the PHICH group number and the first index of the PHICH resource occupied by the given HARQ ACK reuses the PHICH group number to I in the LTE system_{PRB_RA}The mapping relationship of (2); wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended.

4. The method of claim 1, wherein the PHICH resource occupied by the given HARQ _ ACK is determined according to an LTE scheme incorporating at least one of the following revisions:

-revision one.Is the number of elements in the target integer set,the corresponding PHICH group number is equal to the second in the target integer setAn element;

revision two.I_{PRB_RA}Is an integer resulting from adding the transport block index and offset of the transport block for which the given HARQ _ ACK is intended; the offset is an integer obtained by dividing the lowest PRB index occupied by the transport block with the smallest transport block index in the first time slot of the PUSCH by K5, wherein K5 is a positive integer;

5. The method of claim 3 or 4, wherein all TBs of the second signaling schedule share the same DMRS cyclic shift and OCC index.

6. A method in a base station, comprising the steps of:

-step a. transmitting a first signaling indicating a K1 integer set and a second signaling scheduling uplink transmissions in K2 serving cells;

-step b. receiving uplink radio signals on each serving cell of the first set of cells, respectively, according to the scheduling of the second signaling;

step C, sending K3 HARQ _ ACK groups, wherein the K3 HARQ _ ACK groups correspond to the uplink wireless signals carried on K3 service cells in the first cell set in a one-to-one mode;

7. The method of claim 6, wherein said step B further comprises the step B1, and said step C further comprises the step C1:

-step b1. detecting uplink radio signals on the time-frequency resources scheduled by the second signaling of each serving cell in the second set of cells;

-step c1. sending K4 HARQ _ ACK groups, said K4 HARQ _ ACK groups being in one-to-one correspondence with K4 serving cells in the second set of cells;

8. The method of claim 6, wherein a mapping of the PHICH group number and the first index of the PHICH resource occupied by the given HARQ ACK reuses the PHICH group number to I in the LTE system_{PRB_RA}The mapping relationship of (2); wherein L is 1, and the first index is an integer obtained by adding the target integer set and the transport block index of the transport block for which the given HARQ _ ACK is intended.

9. The method of claim 6, wherein the PHICH resource occupied by the given HARQ _ ACK is determined according to an LTE scheme incorporating at least one of the following revisions:

revision two.I_{PRB_RA}Is an integer resulting from adding the transport block index and offset of the transport block for which the given HARQ _ ACK is intended; the offset is an integer of the lowest PRB index occupied by the transport block with the smallest transport block index in the first slot of PUSCH divided by K5,the K5 is a positive integer;

10. The method according to claim 8 or 9, wherein all TBs of the second signaling schedule share the same DMRS cyclic shift and OCC index.

11. A user equipment, characterized in that the equipment comprises:

a first module: the system comprises a first signaling and a second signaling, wherein the first signaling indicates K1 integer sets, and the second signaling is scheduled to be sent in the uplink of K2 serving cells;

a second module: the uplink wireless signal is respectively sent on each service cell in the first cell set according to the scheduling of the second signaling;

a third module: the system comprises a first cell set and a second cell set, wherein the first cell set is used for receiving K3 HARQ _ ACK groups, and the K3 HARQ _ ACK groups correspond to the uplink wireless signals borne on K3 service cells in the first cell set in a one-to-one mode;

12. A base station apparatus, characterized in that the apparatus comprises:

a first module: the system comprises a first signaling and a second signaling, wherein the first signaling indicates K1 integer sets, and the second signaling is scheduled to be transmitted in the uplink of K2 serving cells;

a second module: the uplink wireless signal is respectively received on each service cell in the first cell set according to the scheduling of the second signaling;

a third module: the system comprises a first cell set and a second cell set, wherein the first cell set is used for transmitting K3 HARQ _ ACK groups, and the K3 HARQ _ ACK groups correspond to the uplink wireless signals borne on K3 service cells in the first cell set in a one-to-one mode;