CN107371250B

CN107371250B - Method and device for sending instruction and method and device for receiving instruction

Info

Publication number: CN107371250B
Application number: CN201610322459.2A
Authority: CN
Inventors: 肖华华; 李儒岳; 陈艺戬; 鲁照华; 吴昊; 蔡剑兴; 李永; 王瑜新
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-05-13
Filing date: 2016-05-13
Publication date: 2023-07-14
Anticipated expiration: 2036-05-13
Also published as: CN107371250A; WO2017193878A1

Abstract

The invention provides a method and a device for sending an instruction and a method and a device for receiving the instruction, wherein the method for sending the instruction comprises the following steps: acquiring resource binding parameter information corresponding to various resources; and sending an instruction carrying the information of the resource binding parameters. The invention solves the technical problem that resource binding cannot be realized in the related art due to the fact that the demodulation reference signal DMRS and the downlink shared channel PDSCH use different precoding granularities.

Description

Method and device for sending instruction and method and device for receiving instruction

Technical Field

The present invention relates to the field of communications, and in particular, to a method and apparatus for sending an instruction, and a method and apparatus for receiving an instruction.

Background

In an actual wireless communication system, since a wireless propagation path between a base station and a terminal is easily affected by the environment, a wireless channel has a large randomness. Therefore, in order to accurately recover the signal transmitted by the base station at the terminal, it is necessary to perform relatively accurate estimation on the channel information between the base station and the user, calculate state information (Channel State Information, abbreviated as CSI) using the estimated channel information, feed back the calculated CSI, and the base station performs user scheduling according to the CSI fed back by the user and transmits data. Wherein, CSI includes: channel quality indication information (Channel quality indication, abbreviated CQI), a precoding matrix Indicator (Precoding Matrix Indicator, abbreviated PMI), and a Rank Indicator (RI). In yet another aspect, the estimated channel is used to estimate the channel of the transmitted data region to facilitate demodulation and detection of the data.

In early long term evolution (Long Term Evolution, LTE) versions, such as Release 8 (Rel-8 for short), terminals typically employ common reference signals (Common Reference Signal, CRS for short) for CSI estimation, and terminals also estimate channel information of downlink shared channels (Physical Downlink Shared Channel, PDSCH) based on the CRS and demodulate the transmitted data. In Rel-10 version of long term evolution enhancement (Long Term Evolution-Advanced, LTE a), in order to enable a terminal to estimate up to 8 antenna ports and feed back CSI with larger bandwidth, a new RS, that is, a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), is introduced, the newly introduced CSI-RS is a reference signal sent by a base station and is specially used for performing channel measurement, the terminal performs CSI estimation based on pilot symbols sent by the base station, obtains information of channel matrix H of different transceiver antennas at different time-frequency resource positions, and then can perform CSI quantization and feedback based on the channel matrix H. And a demodulation reference signal (Demodulation Reference Signal, abbreviated DMRS) is introduced for estimating a channel of the downlink shared channel and demodulating the transmitted data. Unlike CRS in early versions, which are used for both CSI estimation and signal demodulation, DMRS and PDSCH use the same precoding, so that the base station does not need to inform the terminal of the precoding used by the base station as in Rel-8 version, on one hand, downlink signaling overhead is saved, and multiple-input multiple-output of multiple users can be better supported.

For convenience of scheduling and description, a wireless communication system generally divides a time-frequency Resource into individual physical Resource blocks (such as physical Resource blocks in LTE/LTE a, physical Resource Block, abbreviated as PRBs), and each physical Resource block includes a plurality of time-domain symbols, and Resource units (also called time-frequency resources, such as concepts of Resource units (Resource elements, abbreviated as REs) of subcarriers in a plurality of frequency domains. And classifying the resource elements in the physical resource block according to the different signals transmitted by the resource elements in the physical resource block, such as a resource element (such as DMRS RE in LTE/LTE a, herein referred to as a first resource element) for transmitting data, a resource element (such as PDSCH RE in LTE/LTE a, herein referred to as a second resource element) for transmitting precoded downlink control channel (such as enhanced downlink control channel enhance Physical Downlink Control Channel in LTE/LTE a, abbreviated ePDCCH, herein referred to as a third resource).

In the wireless transmission process, the target signal can be influenced by interference and noise, and the channel is estimated by combining a plurality of resource unit signals in the time domain and/or the frequency domain when the channel estimation is carried out, so that the performance of the channel estimation can be improved. But the REs performing the joint channel estimation must use the same precoding information, otherwise the joint channel estimation cannot be performed. To facilitate the terminal to know the size of the joint region, multiple physical resource blocks using the same precoding may be bundled, where the bundled physical resource blocks using the same precoding are referred to as a precoding resource group (Precoding Resource block Groups, PRGs), and the size P' thereof is related to factors such as system bandwidth, as shown in table 1, which is one case in LTE/LTE a.

TABLE 1

Of the P 'PRBs in the PRGs, here the frequency domain granularity of the precoding used by the first resource and the second resource is P' PRBs. The existing bundling refers to bundling pilot frequencies (CSI-RS/DMRS) with the same precoding with a certain frequency domain granularity or a time domain window, where corresponding joint channel estimation or joint interference measurement estimation can be performed. The base station may configure parameters such as whether bundling is performed or not, bundling granularity, etc. for the pilot. The DMRS and PDSCH use the same set of signaling to inform the bundling state and bundling granularity parameters. The resource binding technology can well support the situation that the DMRS and the PDSCH use the same precoding, but cannot well support the situation that the DMRS and the PDSCH use different precoding, and because the demodulation reference signal DMRS and the downlink shared channel PDSCH use different precoding granularity, the resource binding cannot be realized, and the situation that more resources in a future wireless communication system use different precoding binding parameters cannot be well supported.

Aiming at the technical problem that resource binding cannot be realized due to the fact that different precoding granularities are used for a demodulation reference signal DMRS and a downlink shared channel PDSCH in the related art, no effective solution is proposed at present.

Disclosure of Invention

The embodiment of the invention provides a method and a device for sending an instruction and a method and a device for receiving an instruction, which are used for at least solving the technical problem that resource binding cannot be realized due to the fact that a demodulation reference signal (DMRS) and a downlink shared channel (PDSCH) use different precoding granularities in the related art.

According to an embodiment of the present invention, there is provided a method of transmitting an instruction, the method including: acquiring resource binding parameter information corresponding to various resources; and sending an instruction carrying the information of the resource binding parameters.

Optionally, the plurality of resources include a first resource and a second resource and/or a third resource, where the first resource is a time-frequency resource for transmitting a pilot related to data, the second resource is a time-frequency resource for transmitting data, and the third resource is a time-frequency resource for transmitting precoded downlink control information.

Optionally, the resource binding parameter information includes at least one of: the method comprises the steps of pre-coding frequency domain granularity, pre-coding time domain granularity, resource binding state and pre-coding set.

Optionally, the frequency domain granularity of precoding refers to the number M of frequency domain units using the same precoding, where the frequency domain units include one of subcarriers, subcarrier groups, and subcarrier sets, the subcarrier groups include a plurality of subcarriers, and the subcarrier sets include a plurality of subcarrier groups.

Optionally, in the case that the resource binding parameter information includes a precoded frequency domain granularity, the precoded frequency domain granularity corresponding to the first resource is M1, the precoded frequency domain granularity corresponding to the second resource is M2, and/or the frequency domain granularity corresponding to the third resource is M3, where M1, M2, and M3 are positive integers, and the relationship between M1 is greater than M2, M1, M2, and M3 satisfies: m1> M2 > 1, or M1> M3 > M2 > 1, or M1> M2 > M3 > 1.

Optionally, the time domain granularity of precoding refers to the number N of time domain units using the same precoding, where a time domain unit includes one of a symbol, a symbol group, and a symbol set, the symbol group includes a plurality of symbols, and the symbol set includes a plurality of symbol groups.

Optionally, in the case that the resource binding parameter information includes a precoded time domain granularity, the precoded time domain granularity corresponding to the first resource is N1, the precoded time domain granularity corresponding to the second resource is N2, and/or the precoded time domain granularity corresponding to the third resource is N3, where N1, N2, and N3 are positive integers, and the relationship between N1 and N2 is greater than N2, N1, N2, and N3 satisfies: n1> N2 > 1, or N1> N3 > N2 > 1, or N1> N2 > N3 > 1.

Optionally, the resource binding state includes a binding enabled state and a binding disabled state.

Optionally, the binding state of the first resource is a binding enabled state, the binding state of the second resource is a binding enabled state or a binding disabled state, and the binding state of the third resource is a binding enabled state or a binding disabled state.

Optionally, the precoding set includes a first precoding set, and further includes a second precoding set and/or a third precoding set, where the first precoding set is used to provide a first required precoding for the first resource, the second precoding set is used to provide a second required precoding for the second resource, and the third precoding set is used to provide a third required precoding for the third resource, and the first precoding and the second precoding are different precoders, and the first precoding and the third precoding are different precoders.

Optionally, the first precoding includes a value in a first dimension, the second precoding includes a value in a first dimension and a second dimension, and the third precoding includes a value in a first dimension and a second dimension, wherein the first dimension and the second dimension are different dimensions.

Optionally, the precoding set includes a first precoding set, and further includes a second precoding set and/or a third precoding set, where the first precoding set is used to provide a first required precoding for the first resource, the first precoding set and the second precoding set are used to provide a second required precoding for the second resource, the first precoding set and the third precoding set are used to provide a third required precoding for the third resource, and the first precoding and the second precoding are different precoders, and the first precoding and the third precoding are different precoders.

Optionally, the first precoding includes a value in a first dimension, the second precoding includes a value in a second dimension, and the third precoding includes a value in a second dimension, wherein the first dimension and the second dimension are different dimensions.

Optionally, the instructions include a first instruction, and further include a second instruction and/or a third instruction, where the first instruction is used to indicate downlink signaling configured for the first resource, the second instruction is used to indicate downlink signaling configured for the second resource, and the third instruction is used to indicate downlink signaling configured for the third resource.

According to another embodiment of the present invention, there is also provided an instruction transmitting apparatus including: the acquisition unit is used for acquiring resource binding parameter information corresponding to various resources; and the sending unit is used for sending the instruction carrying the resource binding parameter information.

According to another embodiment of the present invention, there is also provided a method of receiving an instruction, including: receiving an instruction sent by a base station; and acquiring resource binding parameter information corresponding to the plurality of resources from the instruction.

Optionally, in the case that the resource binding parameter information includes a precoded frequency domain granularity, the precoded frequency domain granularity corresponding to the first resource is M1, the precoded frequency domain granularity corresponding to the second resource is M2, and/or the frequency domain granularity corresponding to the third resource is M3, where M1, M2, and M3 are positive integers, and the relationship between M1 and M2, M1, M2, and M3 satisfies: m1> M2 > 1, or M1> M3 > M2 > 1, or M1> M2 > M3 > 1.

According to another embodiment of the present invention, there is also provided an instruction receiving apparatus including: the receiving unit is used for receiving the instruction sent by the base station; and the processing unit is used for acquiring resource binding parameter information corresponding to the plurality of resources from the instruction.

According to the invention, resource binding parameter information corresponding to various resources is acquired; the method and the device have the advantages that the instruction carrying the resource binding parameter information is sent, the configuration of various resources can be realized through the resource binding parameter information, the technical problem that resource binding cannot be realized due to the fact that different precoding granularities are used for a demodulation reference signal DMRS and a downlink shared channel PDSCH in the related technology is solved, and the stability of a system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a flow chart of a method of sending instructions according to an embodiment of the invention;

FIG. 2 is a flow chart of a method of receiving instructions according to an embodiment of the invention;

fig. 3 is a block diagram of a structure of a transmitting apparatus of an instruction according to an embodiment of the present invention; and

fig. 4 is a block diagram of a structure of a receiving apparatus of an instruction according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Example 1

Fig. 1 is a flowchart of a method of transmitting an instruction according to an embodiment of the present invention, as shown in fig. 1, the flowchart including the steps of:

Step S102, obtaining resource binding parameter information corresponding to various resources.

The above-mentioned multiple resources include a first resource, and further include a second resource and/or a third resource, where the first resource is a time-frequency resource for transmitting a pilot related to data, the second resource is a time-frequency resource for transmitting data, and the third resource is a time-frequency resource for transmitting precoded downlink control information; the resource binding parameter information includes at least one of: the method comprises the steps of pre-coding frequency domain granularity, pre-coding time domain granularity, resource binding state and pre-coding set.

Step S104, an instruction carrying resource binding parameter information is sent.

The above-mentioned instructions include a first instruction, and further include a second instruction and/or a third instruction, where the first instruction is used to indicate downlink signaling configured for the first resource, the second instruction is used to indicate downlink signaling configured for the second resource, and the third instruction is used to indicate downlink signaling configured for the third resource.

Through the steps, resource binding parameter information corresponding to various resources is acquired; the method has the advantages that the instruction carrying the resource binding parameter information is sent, the configuration of various resources can be realized through the resource binding parameter information, the technical problem that resource binding cannot be realized due to the fact that different precoding granularities are used for a demodulation reference signal DMRS and a downlink shared channel PDSCH in the related technology is solved, and the stability and compatibility of the system are improved.

Alternatively, the main body of execution of the above steps may be a base station, but is not limited thereto.

The base stations described above include, but are not limited to: various wireless communication devices such as macro base station, micro base station, wireless access point, etc.; the receiving terminal of the instruction includes, but is not limited to: various terminals such as data cards, mobile phones, notebook computers, personal computers, tablet computers, personal digital assistants, bluetooth, and various wireless communication devices such as relay, remote devices, wireless access points, and the like.

In the above embodiment, the precoded frequency domain granularity refers to the number M of frequency domain units using the same precoding, where the frequency domain units include one of subcarriers, subcarrier groups, and subcarrier sets, the subcarrier groups include a plurality of subcarriers, the subcarrier sets include a plurality of subcarrier groups, the subcarrier groups and subcarrier sets have different concepts in different wireless communication systems, such as in LTE/LTE a, the subcarrier groups include Physical Resource Blocks (PRBs), and subcarrier sets; in LTE/LTEA, the concepts of physical resource block group, subband (subband) are included, but other concepts are possible in other systems or future systems, which are not limited in this application; the precoded time domain granularity refers to the number N of time domain units using the same precoding, wherein the time domain units comprise one of symbol, symbol group, symbol set. The symbol group includes a plurality of symbols and the symbol set includes a plurality of symbol groups. Symbols are time concepts in a wireless communication system, and are described differently in different systems, such as orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA symbols), orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) in LTE/LTEA systems, symbol groups in LTE/LTE a systems include slots (including 5-7 symbols), subframes (including two slots), symbol sets in LTE/LTE a systems include system frames (e.g., 10 subframes), but other concepts are possible in other systems or future systems, which is not limited in this application.

When the resource binding parameter information includes a precoded frequency domain granularity, the precoded frequency domain granularity corresponding to the first resource is M1, the precoded frequency domain granularity corresponding to the second resource is M2, and/or the frequency domain granularity corresponding to the third resource is M3, where M1, M2, and M3 are positive integers, and the relationship between M1 and M2 is greater than M2, M1, M2, and M3 satisfies: m1> M2 > 1, or M1> M3 > M2 > 1, or M1> M2 > M3 > 1.

In the case that the resource binding parameter information includes a precoded time domain granularity, the precoded time domain granularity corresponding to the first resource is N1, the precoded time domain granularity corresponding to the second resource is N2, and/or the precoded time domain granularity corresponding to the third resource is N3, where N1, N2, and N3 are positive integers, and the relationship between N1 being greater than N2, N1, N2, and N3 satisfies: n1> N2 > 1, or N1> N3 > N2 > 1, or N1> N2 > N3 > 1.

It should be noted that the resource binding state includes a binding enabled state and a binding disabled state. The binding state of the first resource is a binding enabling state, the binding state of the second resource is a binding enabling state or a binding disabling state, and the binding state of the third resource is a binding enabling state or a binding disabling state.

In an alternative embodiment, the precoding set comprises a first precoding set for providing the first resource with a required first precoding and/or a third precoding set for providing the second resource with a required second precoding, wherein the first and second precoded are different precodes and the first and third precoded are different precodes.

The first precoding includes a value in a first dimension, the second precoding includes a value in a first dimension and a second dimension, and the third precoding includes a value in a first dimension and a second dimension, wherein the first dimension and the second dimension are different dimensions.

Specifically, the first precoding set may include a plurality of precodes having values in a first dimension, the second precoding set includes a plurality of precodes having values in the first dimension and a second dimension, and the third precoding set includes a plurality of precodes having values in the first dimension and the second dimension. The first dimension may be a horizontal dimension, the precoding value in the first dimension may be used to represent an angle with a horizontal plane, and the second dimension may be a vertical dimension, the precoding value in the second dimension may be used to represent an angle with a vertical line perpendicular to the horizontal plane.

In another alternative embodiment, the precoding set comprises a first precoding set and further comprises a second precoding set and/or a third precoding set, the first precoding set is used for providing a first required precoding for the first resource, the first precoding set and the second precoding set are used for providing a second required precoding for the second resource, the first precoding set and the third precoding set are used for providing a third required precoding for the third resource, wherein the first precoding and the second precoding are different precoders, and the first precoding and the third precoding are different precoders.

The first precoding set includes precoding with a value in a first dimension, the second precoding set includes precoding with a value in a second dimension, and the third precoding set includes precoding with a value in the second dimension.

Specifically, the method of the present application will be described in detail by way of examples of the following embodiments.

In the following embodiments, the first resource is a resource element for transmitting a pilot related to data, for example, the demodulation related pilot is mainly used for channel estimation and demodulation of data, which may be an RE corresponding to a DMRS in LTE/LTE a, and if measurement pilot CSI-RS is precoded, such a resource element may be grouped, for example, a CSI-RS pilot for transmitting an e-MIMO (enhanced Multiple-Input-Output) type B, may also be a time-frequency resource similar to a reference pilot signal used for transmitting data demodulation in other wireless systems, the second resource is a time-frequency resource similar to a PDSCH RE in LTE/LTE a, and may also be a time-frequency resource similar to a time-frequency resource used for transmitting data in other wireless systems, and the third resource may also include a third resource for transmitting a precoded downlink control information, for example, an enhanced downlink control channel in LTE/LTE a, and the third resource may also be a time-frequency resource similar to a control channel used for transmitting precoding in other wireless systems, where the second resource is described as a dcch resource for convenience.

The above-mentioned frequency domain granularity of precoding refers to the number M of frequency domain units with the same precoding function, where the frequency domain units may include one of subcarriers, physical resource blocks, subcarrier groups, and physical resource block groups, where a subcarrier, such as a subcarrier concept in LTE/LTE a, is a subcarrier group including more than 1 subcarrier, a physical resource block is a physical transmission block including several time domain symbols and several frequency domain subcarriers, such as PRB of LTE/LTE a, and a physical resource block group is a physical resource block including more than 1 physical resource block, such as a PRG subband concept in LTE/LTE a, and of course, may also include other concepts indicating the frequency domain granularity.

The precoded time domain granularity refers to the number N of time domain units with the same precoding function, where the time domain units include symbol, OFDMA symbol, slot, subframe, system frame, and of course include other concepts that represent granularity in the time domain.

Embodiments of the present application are described in detail below in conjunction with specific scenarios:

embodiment 1

The scheme described in this embodiment is that the base station configures the case that the parameter of the resource bundling includes (i.e., the above-mentioned resource bundling parameter information) the frequency domain granularity of the precoding, and the base station determines the frequency domain granularity of the precoding of the first resource, the second resource and the third resource.

The base station may use semi-static open loop MIMO based on DMRS, which means that the base station feeds back information of part of the codebook, such as the first codebook W1, CSI-RS resource index (CSI-RS resource indicator, CRI). The base station uses precoding W1 on the DMRS or precoding W1 used on CSI-RS corresponding to CRI. And precoding W (W is W1×w2) is used on PDSCH, where W2 is valued in a codebook subset S, and S includes L codewords. The base station polls on PRB or subcarrier groups using L W2 codewords. For example, the ith PRB or subcarrier group uses the jth codeword in the set S, where j=mod (i, L), and in practical configuration, the relation between j and i is not limited to this, but the subcarrier group may be used for polling, and here, the polling method based on PRB is not limited to this, and the above "mod (,)" is a remainder function.

This may result in different precoding granularity of DMRS and PDSCH, requiring independent configuration of bundling parameters. Including but not limited to the following.

Mode 1: the precoded frequency domain granularity of PDSCH REGs is m2=1, while the precoded frequency domain granularity of DMRS REGs is

Wherein (1)>

Is the system bandwidth. That is, the DMRS REGs use the same precoding within the entire bandwidth, the bundling granularity is the entire system bandwidth, and the frequency domain granularity of the precoding of the PDSCH REGs is 1 PRB, each PRB may use a different precoding.

Mode 2: the precoded frequency domain granularity of PDSCH REGs is m2=1, while the precoded frequency domain granularity of DMRS REGs is

Wherein (1)>

Is the system bandwidth. I.e., the frequency domain granularity of the DMRS REG is M1, dividing the whole system bandwidth into

The DMRS precodes resource groups PRGs. The same precoding is used within the PRG group of each DMRS, while different PRG groups of different DMRS may use different precoding. While the frequency domain granularity of precoding of PDSCH REGs is 1 PRB, each PRB may use different precoding. Here, "ceil" means a function of the upper rounding, M1>1。

Mode 3: the precoded frequency domain granularity of PDSCH REGs is m2=2, while the precoded frequency domain granularity of DMRS REGs is

Wherein (1)>

The DMRS precodes resource groups PRGs. The same precoding is used within the PRG group of each DMRS, while different PRG groups of different DMRS may use different precoding. While the frequency domain granularity of the precoding of PDSCH REGs is 2 PRBs, the entire system bandwidth is divided into each PRB and different precoding can be used. />

And PDSCH PRG. The same precoding is used within each PDSCH PRG group, while different PDSCH PRG groups may use different precoding, where ceil represents a function of the upper rounding, M1 >M2=2. And here, M2 may be a positive integer greater than 2, and M2 is smaller than M1.

Of course, other relationships of M1 and M2 may be configured, as long as M1> M2 is satisfied.

I.e. the DMRS is bound together with M1 PRBs, the same first precoding is used, and the user can perform joint channel estimation in the domain range of the M1 PRBs. PDSCH is bundled together within M2 PRBs, using the same second precoding.

The base station transmits the resource bundling parameter information of the DMRS REGs, such as the frequency domain granularity M1 of the precoding of the DMRS PRG, through the first instruction, and the resource bundling parameter information of the PDSCH REGs, such as the frequency domain granularity M2 of the precoding of the PRG of the PDSCH.

And the terminal receives the first instruction and the second instruction sent by the base station. The frequency domain granularity M1 of the precoding of the DMRS PRG is determined by a first instruction, and the frequency domain granularity M2 of the precoding of the PDSCH PRG is determined by a second instruction.

It should be noted that, the base station may send only one fourth instruction (i.e., the above instruction information sets for indicating the respective resources are sent in one instruction) for jointly indicating the resource binding parameter information of the DMRS and the PDSCH. And the terminal receives the fourth instruction, so that the resource binding parameter information of the DMRS and the PDSCH is obtained.

In addition, in the present embodiment, preferably, M1>1 indicates that the DMRS is a binding enabled state. M2>1 indicates that PDSCH is in a bundling-enabled state, and m1=1 indicates that PDSCH is in a bundling-disabled state, which corresponds to bundling with the precoded frequency domain granularity.

Optionally, the binding state of the DMRS is transmitted to the terminal by the first instruction, the binding state of the PDSCH is transmitted to the terminal by the second instruction, or is jointly transmitted on the fourth instruction.

In this embodiment, PDSCH resources may be replaced by ePDCCH of the third resource, which is similar to PDSCH in implementation, and if the base station determines that the frequency domain granularity of PDCCH is M3, and satisfies that the frequency domain granularity M1 of DMRS is greater than M3, and defaults to enable resource bundling when M3 is 1. And will not be described in detail here.

In this embodiment, PDSCH resources may be replaced by ePDCCH of PDSCH and third resources, which is similar to PDSCH in implementation, and if the base station determines that the frequency domain bundling granularity of ePDCCH is M3 and satisfies that the frequency domain granularity of DMRS is greater than M3, M1> M2, where the relationship between M3 and M2 may be equal or unequal, i.e., M3> M2, or M2> M3, and default is that the resources are bundling-disabled when M3 is 1. And will not be described in detail here. The binding state of the ePDCCH may also be transmitted through the third instruction or the fourth instruction.

Embodiment 2

The scheme described in this embodiment is that the base station configures the case that the parameter of the resource binding includes (i.e. the above-mentioned resource binding parameter information) the time domain granularity of the precoding, and the base station determines the frequency domain granularity of the precoding of the first resource, the time domain granularity of the precoding of the second resource and the third resource.

In this embodiment, the base station may use semi-static open loop MIMO based on DMRS, where the semi-static open loop MIMO refers to that the base station feeds back information of a partial codebook, such as the first codebook W1, CSI-RS resource index (CSI-RS resource indicator, CRI). The base station uses precoding W1 on the DMRS or precoding W1 used on CSI-RS corresponding to CRI. And precoding W (W is W1×w2) is used on PDSCH, where W2 is valued in a codebook subset S, and S includes L codewords. The base station polls for L W2 codewords on OFDMA symbols or slots or TTI (Transmission Time Interval ), or sub-frame, on the frame. Here, TTI indexes are described as examples, for example, the ith TTI uses the jth codeword in the set S, where j=mod (i, L), and in actual configuration, the relationship configuration of j and i is not limited.

This may result in different precoding time domain granularity for DMRS and PDSCH, requiring independent configuration of bundling parameters. Including but not limited to the following.

Mode 1: PDSCH precoding time domain granularity is n2=1, while DMRS precoding time domain granularity is N1>1.

Mode 2: the precoding time domain granularity of PDSCH is N2>1, while the precoding time domain granularity of DMRS is N1> N2.

The DMRS is bound together in N1 subframes, the same first precoding is used, and the user can perform joint channel estimation in the time domain range corresponding to the subframes. PDSCH is bundled together within N2 subframes using the same second precoding.

The base station transmits the binding parameter configuration of the DMRS REGs, such as the time domain granularity N1 of the precoding of the DMRS, through the first instruction, and transmits the binding parameter configuration of the PDSCH, such as the precoding time domain granularity N2 of the PDSCH.

And the terminal receives the first instruction and the second instruction sent by the base station. The precoding time domain granularity N1 of the DMRS is determined by a first instruction, and the precoding time domain granularity N2 of the PDSCH is determined by a second instruction.

In addition, in the present embodiment, preferably, N1>1 indicates that the DMRS is a binding enabled state. N2>1 indicates that PDSCH is a bundling-enabled state, and n1=1 indicates that PDSCH is a bundling-disabled state.

In this embodiment, PDSCH resources may be replaced by ePDCCH of the third resource, which is similar to PDSCH in implementation, and the base station may determine that the precoding time domain granularity of the PDCCH is N3, and satisfy the requirement that the precoding time domain granularity N1 of the DMRS is greater than N3, and default that the resources are bonded for enabling when N3 is 1. And will not be described in detail here.

In this embodiment, PDSCH resources may be replaced by ePDCCH of PDSCH and third resources, which is similar to PDSCH in implementation, and if the base station determines that the precoding time domain granularity of ePDCCH is N3 and satisfies that the precoding time domain granularity N1 of DMRS is greater than N3, N1> N2, where the relationship between N3 and N2 may be equal or unequal, i.e., N3> N2, or N2> N3, and default to be resource bundling disabling when N3 is 1. And will not be described in detail here.

An embodiment similar to the frequency domain granularity is described in embodiment 2, and the resource binding parameter of DMRS, PDSCH, ePDCCH may also be transmitted to the terminal by a fourth instruction, which is not repeated here.

Embodiment 3

The scheme described in this embodiment is that, in the case where the parameters of the base station configuration resource bundling include a precoding granularity and a precoding set, the base station determines a frequency domain granularity of precoding of the first resource, a frequency domain granularity of precoding of the second resource and/or the third resource, and a precoding value in each bundled precoding resource group PRG of the first resource, and a precoding value in each bundled precoding resource group PRG of the second resource and/or the third resource.

In this embodiment, the base station may use semi-static open loop MIMO based on DMRS, where the semi-static open loop MIMO refers to that the base station feeds back information of a partial codebook, such as the first codebook W1, CSI-RS resource index (CSI-RS resource indicator, CRI). The base station uses precoding W1 on the DMRS or precoding W1 used on CSI-RS corresponding to CRI. And precoding W (w=w1×w2) is used on PDSCH, where W2 is valued in a codebook subset S, where S includes L codewords. The base station polls on PRB or subcarrier groups using L W2 codewords. For example, the ith PRB or subcarrier group uses the jth codeword in the set S, where j=mod (i, L), and in practical configuration, the relationship configuration of j and i is not limited.

In Release 8 and Release 9 of LTE/LTE a, the 4-antenna codebook and the 2-antenna codebook are in the form of a single codeword, and only one PMI is represented by i=1, …, N11, and N11 are the number of codewords. In the 8 antenna codebook of Release 10 and the 4 antenna codebook of Release 12 version, the feedback is in the form of dual codebook feedback, namely, the codeword can be written in the form of w=w1×w2, and W1 is a codebook fed back for a long term, called a first codebook, generally has N11 groups, each group comprises P1 candidate beams, the user selects one group index of the N11 groups to feed back to the base station, the feedback is generally quantized and fed back by PMI1, the value is generally represented by i1=1, …, N11, and N11 is the number of W1; w2 represents a short-term feedback codebook, called a second codebook, whose function is to select one of P1 candidate beams in the W1 codeword, and to select a polarization phase Co-phase for each polarization direction selected beam of the same data layer, each codeword in W2 is quantized and fed back with PMI2, whose value is i2=1, …, P1 being the number of W2.

The codewords before Release 12 are all for 1D antenna (i.e. antennas with one dimension) arrays, belonging to 1D codewords, and in Release 13 the codebook dimensions become larger as more antennas are used. The topology of the antennas is also typically planar, i.e. antennas with two dimensional directions (e.g. horizontal and vertical dimensions), so that 2D codewords are designed. So that each beam in the first codebook W1 has a 2-dimensional form

Wherein v is _m And u _n Discrete fourier vectors (Discrete Fourier Transform, DFT) of the first and second dimensions respectively,

representing v _m And u _n Kronecker product (i.e. kronecker product), m=1, 2, …, B ₁ ,n＝1,2,…,B ₂ . The first dimension codebook of the first codebook is denoted by PMI11 with a value i11=1, …, N11, and the second dimension codebook of the first codebook is denoted by PMI12 with a value i12=1, …, N12. For the index of each PMI11 and PMI12, there are P1W 2 codewords, each W2 codeword is to select 2-dimensional beam from W1 +.>

Of different polarisation directionsCo-coding, the corresponding codeword index PMI2, denoted by i2=1, …, P1.

And when the CSI feedback category is Class B and K is more than 1, the base station configures K sets of CSI-RS resources (namely CSI-RS resources), wherein each CSI-RS resource has the number of ports, RE patterns, pilot sequences and precoding directions which are independently configured. Each CSI-RS resource corresponds to an index, and a precoding vector in one direction corresponds to the index. The index corresponding to the CSI-RS resource is CRI, feedback CRI knows that the user pre-codes, and the user performs CSI calculation feedback on the CSI-RS resource corresponding to the selected CRI.

This may result in different precoding granularity for DMRS and PDSCH, requiring independent configuration of bundling parameters. Including but not limited to the following.

Wherein (1)>

Wherein (1)>

The DMRS precodes resource groups PRGs. The same pre-allocation is used in the PRG group of each DMRSCodes, while PRG groups for different DMRSs may use different precoding. While the frequency domain granularity of precoding of PDSCH REGs is 1 PRB, each PRB may use different precoding. Here, ceil represents a function rounded up, M1>1。

Wherein (1)>

The DMRS precodes resource groups PRGs. The same precoding is used within the PRG group of each DMRS, while different PRG groups of different DMRS may use different precoding. While the frequency domain granularity of the precoding of PDSCH REGs is 2 PRBs, the entire system bandwidth is divided into each PRB and different precoding can be used. / >

And PDSCH PRG. The same precoding is used within each PDSCH PRG group, while different PDSCH PRG groups may use different precoding, where ceil represents a function of the upper rounding, M1>M2=2. And here, M2 may be a positive integer greater than 2, and M2 is smaller than M1.

The base station uses precoding W1J for the jth PRG in the L1 DMRS REGs, and assumes that PRB index J in the PRG is valued at set s1= { (J-1) ×m+1+.ltoreq.j.ltoreq.m } and uses precoding W2I for the ith PRG in the L2 PDSCH REGs, and that PRB index I in the PRG is valued at set s2= { (I-1) ×n+1+.ltoreq.i.ltoreq.j×n }. If S2 belongs to S1, precoding used by PDSCH in the index corresponding PRB in the set S2 is W1jW i. Wherein W1j may also be codeword information comprising only one dimension, such as codeword information v of a first dimension _m In the form of

In the form of I2 is an identity matrix whose dimensions are such that the matrix +.>

The number of columns is the same as the number of rows of W2i. Such as codeword information u of the second dimension _n In the form of

In the form of I1 is an identity matrix whose dimensions are such that the matrix +.>

The number of columns is the same as the number of rows of W2i. Here, j=1, …, L1, i=1, …, L2.

The base station transmits the bundling parameter configuration of the DMRS REGs, such as the frequency domain granularity M1 of the precoding of the DMRS PRG, through the first instruction, and the bundling parameter configuration of the PDSCH REGs, such as the frequency domain granularity M2 of the precoding of the PRG of the PUSCH, through the second instruction.

Optionally, after determining the precoding granularity M1 of the DMRS PRG, the terminal performs joint channel estimation on the channel by using all DMRS ports in the M1 PRBs for the M1 PRBs included in the DMRS PRG bound to the j-th DMRS PRG, so as to improve the accuracy of channel estimation. Here, it is assumed that the estimated channel of M1 PRBs is H1. It is the equivalent channel of the base station to user channel H after precoding W1j, j=1, …, L1.

Optionally, after determining the precoding granularity M2 of the PDSCH PRGs, the terminal knows, for the i bonded PDSCH PRGs, the W2i information used by the M2 PRBs for the M2 PRBs included therein according to the indexes of the PRBs. Thus, the channel H1 estimated in the DMRS PRG is multiplied by the channel estimate H2 on the PDSCH in the M2 PRBs of W2, and the PDSCH of the M2 PRBs is data-detected and demodulated with H2, i=1, …, L2.

The PRB is only used as the frequency domain unit granularity, but may be other PRB groups, subbands, and subcarriers, where the subcarrier groups are used as the frequency domain unit granularity, and the process is similar and is not exemplified herein.

In this embodiment, the precoding of PDSCH is from the second set of codewords, the second set of codewords including codewords in the form W1 x W2, and the precoding of DMRS is from the first set of codewords, the first set of codewords including codewords in the form W1.

In this embodiment, the precoding of PDSCH is from the second set of codewords and the first codebook set, the second set of codewords comprising codeword in the form of W2, and the precoding of DMRS is from the first set of codewords comprising codeword in the form of W1. That is, the PDSCH takes the codeword W1 in the first codebook set and the codeword W2 in the second codebook set to form the codeword W1 x W2 used.

In this embodiment, PDSCH resources may be replaced by ePDCCH of a third resource, which is similar to PDSCH in implementation, and the base station determines the precoding granularity M3 and the precoding W 'of ePDCCH, and uses precoding W' =w1×w2 in M3 PRBs, which remains unchanged in M3 PRBs, and whose value is from a third precoding set (where the codeword form is W1×w2), or the third precoding set has only codeword form W2, and the ePDCCH value is equal to W1 of the first codebook set and W2 of the third codebook set, to form its own codeword. And will not be described in detail here.

In this embodiment, PDSCH resources may also be replaced by ePDCCH of PDSCH and third resources, which is similar to PDSCH in implementation process, that is, the base station determines the precoding granularity M3 and the precoding W 'of ePDCCH, and uses precoding W' =w1×w2 in M3 PRBs, which remains unchanged in M3 PRBs, where the precoding values of ePDCCH and PDSCH may be the same or different. And will not be described in detail here.

Here, the case of precoding is illustrated, where precoding is used in the frequency domain, and precoding may also be used in polling in the time domain, for example, where DMRS uses precoding W1 in different N1 TTIs (which may also be time domain symbols, subframes, system frames, slots, etc.), PDSCH uses the same precoding w=w1×w2 in N2 TTIs, and ePDCCH uses precoding W '=w1' ×w2 'in N3 TTIs, where W and W' may be the same or different.

Similarly, the resource binding parameter information corresponding to PDSCH, ePDCCH, DMRS may be transmitted by only one fourth instruction.

Example 2

Fig. 2 is a flowchart of a method of receiving an instruction according to an embodiment of the present invention, as shown in fig. 2, the flowchart including the steps of:

Step S202, receiving an instruction sent by a base station.

Step S204, resource binding parameter information corresponding to various resources is obtained from the instruction.

Through the steps, the instruction sent by the base station is received, the resource binding parameter information corresponding to various resources is obtained from the instruction, the technical problem that resource binding cannot be realized due to the fact that different precoding granularities are used for a demodulation reference signal (DMRS) and a downlink shared channel (PDSCH) in the related technology is solved, and the stability of the system is improved.

Optionally, the execution body of the above steps may be a terminal, but is not limited thereto, and the implementation manner of performing the relevant configuration after the terminal receives the instruction is described in detail in the previous embodiment, which is not repeated herein.

The above terminals include, but are not limited to: various terminals such as data cards, mobile phones, notebook computers, personal computers, tablet computers, personal digital assistants, bluetooth, and various wireless communication devices such as relay, remote devices, wireless access points, and the like.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

Example 3

The embodiment also provides a device for sending an instruction, which is used for implementing the above embodiment and the preferred implementation, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

Fig. 3 is a block diagram of a structure of an instruction transmitting apparatus according to an embodiment of the present invention, as shown in fig. 3, the apparatus including: an acquisition unit 31 and a transmission unit 33.

An obtaining unit 31, configured to obtain resource binding parameter information corresponding to a plurality of resources.

A sending unit 33, configured to send an instruction carrying the resource binding parameter information.

Through the steps, the acquisition unit acquires resource binding parameter information corresponding to various resources; the sending unit sends the instruction carrying the resource binding parameter information, and the configuration of various resources can be realized through the resource binding parameter information, so that the technical problem that the resource binding cannot be realized due to the fact that different precoding granularities are used for a demodulation reference signal (DMRS) and a downlink shared channel (PDSCH) in the related technology is solved, and the stability and the compatibility of the system are improved.

Example 4

Fig. 4 is a block diagram of a receiving apparatus of an instruction according to an embodiment of the present invention, as shown in fig. 4, the apparatus including: a receiving unit 41 and a processing unit 43.

A receiving unit 41, configured to receive an instruction sent by the base station.

The processing unit 43 is configured to obtain resource binding parameter information corresponding to a plurality of resources from the instruction.

Through the steps, the receiving unit receives the instruction sent by the base station, and the processing unit acquires the resource binding parameter information corresponding to various resources from the instruction, so that the technical problem that resource binding cannot be realized due to the fact that different precoding granularities are used for the demodulation reference signal DMRS and the downlink shared channel PDSCH in the related technology is solved, and the stability of the system is improved.

It should be noted that each of the above modules may be implemented by software or hardware, and for the latter, it may be implemented by, but not limited to: the modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

Example 5

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the above-described storage medium may be configured to store program code for performing the steps of:

s1, acquiring resource binding parameter information corresponding to various resources;

s2, sending an instruction carrying resource binding parameter information.

Optionally, the storage medium is further arranged to store program code for performing the steps of:

s3, receiving an instruction sent by a base station;

s4, acquiring resource binding parameter information corresponding to the various resources from the instruction.

Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Optionally, in this embodiment, the processor executes according to program code stored in the storage medium: acquiring resource binding parameter information corresponding to various resources; and sending an instruction carrying the information of the resource binding parameters.

Optionally, in this embodiment, the processor executes according to program code stored in the storage medium: receiving an instruction sent by a base station; and acquiring resource binding parameter information corresponding to the plurality of resources from the instruction.

Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of transmitting an instruction, comprising:

acquiring resource binding parameter information corresponding to various resources;

transmitting an instruction carrying the resource binding parameter information;

the plurality of resources comprise first resources and second resources and/or third resources, wherein the first resources are time-frequency resources for transmitting pilot frequency related to data, the second resources are time-frequency resources for transmitting data, and the third resources are time-frequency resources for transmitting pre-coded downlink control information;

the resource binding parameter information includes at least one of: the method comprises the steps of pre-coding frequency domain granularity, pre-coding time domain granularity, resource binding state and pre-coding set;

when the resource bundling parameter information includes the frequency domain granularity of the precoding, the frequency domain granularity of the precoding corresponding to the first resource is M1, the frequency domain granularity of the precoding corresponding to the second resource is M2, and/or the frequency domain granularity corresponding to the third resource is M3, where M1, M2, and M3 are positive integers, and the relation between M1 and M2 is greater than M2, M1, M2, and M3 satisfies: m1> M2 > 1, or M1> M3 > M2 > 1, or M1> M2 > M3 > 1.

2. The method of claim 1, wherein the frequency domain granularity of precoding refers to a number M of frequency domain units using the same precoding, wherein the frequency domain units comprise one of subcarriers, subcarrier groups, subcarrier sets, the subcarrier groups comprising a plurality of subcarriers, and the subcarrier sets comprising a plurality of subcarrier groups.

3. The method according to claim 1, wherein in case the resource binding parameter information comprises the precoded time domain granularity, the precoded time domain granularity corresponding to the first resource is N1, the precoded time domain granularity corresponding to the second resource is N2 and/or the precoded time domain granularity corresponding to the third resource is N3, wherein N1, N2 and N3 are positive integers, and the relation between N1 is greater than N2, N1, N2 and N3 satisfies: n1> N2 > 1, or N1> N3 > N2 > 1, or N1> N2 > N3 > 1.

4. A method according to claim 1 or 3, characterized in that the time domain granularity of the precoding refers to the number N of time domain units using the same precoding, wherein the time domain units comprise one of symbol, symbol group, symbol set, the symbol group comprising a plurality of symbols, the symbol set comprising a plurality of symbol groups.

5. The method of claim 1, wherein the resource binding state comprises a binding enabled state and a binding disabled state.

6. The method of claim 5, wherein the binding state of the first resource is a binding enabled state, the binding state of the second resource is a binding enabled state or a binding disabled state, and the binding state of the third resource is a binding enabled state or a binding disabled state.

7. The method according to claim 1, wherein the precoding set comprises a first precoding set for providing a required first precoding for the first resource and a second precoding set for providing a required second precoding for the second resource and/or a third precoding set for providing a required third precoding for the third resource, wherein the first and second precoding are different precoders, and the first and third precoders are different precoders.

8. The method of claim 7, wherein the first precoding includes values in a first dimension, the second precoding includes values in the first dimension and a second dimension, and the third precoding includes values in the first dimension and the second dimension, wherein the first dimension and the second dimension are different dimensions.

9. The method according to claim 1, wherein the precoding set comprises a first precoding set and further comprises a second precoding set and/or a third precoding set, the first precoding set being used for providing a required first precoding for the first resource, the first precoding set and the second precoding set being used for providing a required second precoding for the second resource, the first precoding set and the third precoding set being used for providing a required third precoding for the third resource, wherein the first precoding and the second precoding are different precodes, and the first precoding and the third precoding are different precodes.

10. The method of claim 9, wherein the first precoding includes a value in a first dimension, the second precoding includes a value in a second dimension, and the third precoding includes a value in the second dimension, wherein the first dimension and the second dimension are different dimensions.

11. The method of claim 1, wherein the instructions comprise a first instruction for carrying resource binding parameter information of the first resource, a second instruction for carrying resource binding parameter information of the second resource, and/or a third instruction for carrying resource binding parameter information of the third resource.

12. A method of receiving an instruction, comprising:

receiving an instruction sent by a base station;

acquiring resource binding parameter information corresponding to various resources from the instruction;

13. The method of claim 12, wherein the frequency domain granularity of precoding refers to a number M of frequency domain units using the same precoding, wherein the frequency domain units comprise one of subcarriers, subcarrier groups, subcarrier sets, the subcarrier groups comprising a plurality of subcarriers, and the subcarrier sets comprising a plurality of subcarrier groups.

14. The method according to claim 12, wherein in case the resource binding parameter information comprises the precoded time domain granularity, the precoded time domain granularity corresponding to the first resource is N1, the precoded time domain granularity corresponding to the second resource is N2 and/or the precoded time domain granularity corresponding to the third resource is N3, wherein N1, N2 and N3 are positive integers, and the relation between N1 is greater than N2, N1, N2 and N3 satisfies: n1> N2 > 1, or N1> N3 > N2 > 1, or N1> N2 > N3 > 1.

15. The method according to claim 12 or 14, wherein the time domain granularity of the precoding refers to a number N of time domain units using the same precoding, wherein the time domain units comprise one of symbol, symbol group, symbol set, the symbol group comprising a plurality of symbols, and the symbol set comprising a plurality of symbol groups.

16. An instruction transmitting apparatus, comprising:

the acquisition unit is used for acquiring resource binding parameter information corresponding to various resources;

the sending unit is used for sending an instruction carrying the resource binding parameter information;

Wherein the resource binding parameter information includes at least one of: the method comprises the steps of pre-coding frequency domain granularity, pre-coding time domain granularity, resource binding state and pre-coding set;

17. An instruction receiving apparatus, comprising:

the receiving unit is used for receiving the instruction sent by the base station;

the processing unit is used for acquiring resource binding parameter information corresponding to various resources from the instruction;