CN107370586B

CN107370586B - Channel transmission method and device

Info

Publication number: CN107370586B
Application number: CN201610319671.3A
Authority: CN
Inventors: 高雪娟; 郑方政
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-05-13
Filing date: 2016-05-13
Publication date: 2021-02-05
Anticipated expiration: 2036-05-13
Also published as: WO2017193714A1; CN107370586A

Abstract

The invention provides a channel transmission method and a device, wherein the channel transmission method of a terminal side comprises the following steps: receiving a downlink control channel; determining a first frequency domain resource for transmitting data information carried on a shared channel according to a downlink control channel; determining a second frequency domain resource for transmitting a pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer larger than 1; and transmitting data information carried on the shared channel on the first frequency domain resource, and transmitting pilot frequency of the shared channel on the second frequency domain resource. The embodiment of the invention divides the system bandwidth into A sub-bandwidths in advance, and transmits the pilot frequency of the shared channel by using one or more sub-bandwidths in the A sub-bandwidths, thereby ensuring the orthogonality transmission of a plurality of transmitted pilot frequencies which have different frequency domain resources and share the pilot frequency resources for data transmission, and ensuring the correct transmission and demodulation of data while reducing the pilot frequency overhead of short TTI transmission.

Description

Channel transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a channel transmission method and apparatus.

Background

The conventional LTE FDD (frequency division duplex) system uses a frame structure (FS 1 for short) type 1, which is shown in fig. 1. In an FDD system, uplink and downlink transmissions use different carrier frequencies, and both uplink and downlink transmissions use the same frame structure. On each carrier, a radio frame with the length of 10ms comprises 10 1ms subframes, each subframe is divided into time slots with the length of 0.5ms, and the TTI duration of uplink and downlink data transmission is 1 ms.

The conventional LTE TDD (time division duplex) system uses a frame structure (FS 2 for short) type 2, and the structure is shown in fig. 2. In a TDD system, uplink and downlink transmissions use different subframes or different time slots on the same frequency. Each 10ms radio frame in FS2 consists of two 5ms fields, each field containing 5 subframes of 1ms length. Subframes in FS2 are divided into three categories: the subframe comprises a Downlink subframe, an Uplink subframe and special subframes, wherein each special subframe comprises three parts of a Downlink transmission Time Slot (DwPTS, Downlink Pilot Time Slot), a Guard interval (GP, Guard Period) and an Uplink transmission Time Slot (UpPTS, Uplink Pilot Time Slot). The DwPTS can transmit downlink pilot frequency, downlink service data and downlink control signaling; the GP does not transmit any signal; the UpPTS transmits only a random access and Sounding Reference Signal (SRS), and cannot transmit uplink traffic or uplink control information. Each half frame comprises at least 1 downlink subframe, at least 1 uplink subframe and at most 1 special subframe. Table 1 shows 7 uplink and downlink subframe allocation schemes performed in FS 2.

TABLE 1

The data and pilot (i.e., reference symbols, or DMRS, used for data demodulation) structures of an existing LTE PUSCH (Physical Uplink Shared Channel) in one subframe are shown in fig. 3 and 4. Under normal CP (Cyclic Prefix), as shown in fig. 3, the 4 th symbol in each slot in each subframe is used for transmitting pilot and the rest of the symbols are used for transmitting data, and under extended CP (Cyclic Prefix), the 3 rd symbol in each slot in each subframe is used for transmitting pilot and the rest of the symbols are used for transmitting data. The uplink pilot frequency is a pilot frequency exclusive to the terminal and is generated according to the actual bandwidth size scheduled by the PUSCH. In order to support uplink MU-MIMO (multi-user multiple input multiple output) technology, each row of pilot can realize orthogonal transmission of the pilots of a plurality of terminals sharing the same resource by performing cyclic shift on the same pilot base sequence, so that a receiving end can distinguish the pilots of different terminals through the cyclic shift.

In an LTE system, existing channel transmission is defined by taking a subframe as a unit, when a PUSCH is transmitted by adopting a TTI (S-TTI) length shorter than 1ms, if DMRS occupies a column of symbol transmission in the S-TTI, DMRS overhead of at least 1 column of symbols exists in each S-TTI, and the overhead is overlarge. In order to reduce DMRS overhead, a simple way may be to transmit multiple s-TTIs in the same subframe or slot to share the same column of DMRS; however, these multiple s-TTI transmissions have independent scheduling information, and their scheduling bandwidths may only partially overlap, so if the DMRS sequences are generated according to the respective scheduling bandwidths and the corresponding DMRS Cyclic Shifts (CSs) as defined in the existing mechanism, when mapped onto the same symbol, due to the partial overlapping of the scheduling bandwidths, the DMRS sequences are not aligned, which may destroy the orthogonality between the DMRS sequences mapped on the same frequency domain resources and corresponding to different PUSCHs, i.e., as shown in fig. 5, the DMRSs transmitted in dotted line 1 and dotted line 2 respectively corresponding to s-TTI1 and s-TTI2 only overlap on a part of the frequency domain resources, resulting in the destruction of the orthogonality of the DMRSs, and thus the base station cannot distinguish the DMRSs of s1 and s-TTI 2.

Disclosure of Invention

The invention aims to provide a channel transmission method and a channel transmission device, which solve the problem that the orthogonality of pilot frequency is destroyed when a plurality of sections of transmission time intervals share the same row of pilot frequency in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a channel transmission method, used in a terminal side, including:

receiving a downlink control channel, wherein the downlink control channel is used for bearing scheduling information of a shared channel;

determining a first frequency domain resource for transmitting data information carried on the shared channel according to the downlink control channel;

determining a second frequency domain resource for transmitting the pilot frequency of the shared channel according to the indication of the prearranged or configured signaling; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

and transmitting data information carried on the shared channel on the first frequency domain resource, and transmitting the pilot frequency of the shared channel on the second frequency domain resource.

Wherein, the transmission time interval TTI length of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

Each sub-bandwidth comprises the same number or different numbers of resource blocks; alternatively, the first and second electrodes may be,

each sub-bandwidth comprises the same number or different numbers of sub-carriers; alternatively, the first and second electrodes may be,

each sub-bandwidth comprises the same number or different numbers of resource units; wherein the content of the first and second substances,

the resource unit is a predefined subcarrier on a symbol or a plurality of subcarriers continuous on a frequency domain on a symbol.

Wherein, according to the indication of the configuration signaling, the step of determining the second frequency domain resource for transmitting the pilot frequency comprises:

and the configuration signaling indicates one or more sub-bandwidths in the A sub-bandwidths obtained by pre-division as the second frequency domain resources.

Wherein, according to a predetermined convention, the step of determining a second frequency domain resource for transmitting the pilot of the shared channel comprises:

and determining a second frequency domain resource for transmitting the pilot frequency according to the relative relation between the first frequency domain resource and the A sub-bandwidths obtained by pre-dividing.

Wherein, the step of determining the second frequency domain resource for transmitting the pilot frequency according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing comprises:

if the first frequency domain resource is completely contained in one sub-bandwidth of the A sub-bandwidths, determining that the second frequency domain resource is the one sub-bandwidth containing the first frequency domain resource;

determining that the second frequency-domain resource is the two or more sub-bandwidths including the first frequency-domain resource if the first frequency-domain resource is included in the two or more sub-bandwidths of the A sub-bandwidths.

Wherein, before transmitting the pilot of the shared channel on the second frequency domain resource, the channel transmission method further comprises:

and generating a pilot frequency sequence corresponding to the size of the second frequency domain resource according to the base sequence and the cyclic shift value and/or the orthogonal sequence, wherein the pilot frequency sequence is a pilot frequency of the shared channel.

When the second frequency domain resource is a plurality of sub-bandwidths in a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth, before transmitting the pilot of the shared channel on the second frequency domain resource, the channel transmission method further includes:

generating a pilot frequency sequence corresponding to each sub-bandwidth according to the base sequence of each sub-bandwidth and the cyclic shift value and/or the orthogonal sequence; wherein the pilot sequences of the multiple sub-bandwidths constitute pilots of the shared channel; alternatively, the first and second electrodes may be,

generating a first pilot sequence according to a base sequence of one of the plurality of sub-bandwidths and a cyclic shift value and/or an orthogonal sequence; and determining that the pilot sequences of other sub-bandwidths are the same as the first pilot sequence, wherein a plurality of the same first pilot sequences form the pilot of the shared channel.

Wherein the cyclic shift value and/or the orthogonal sequence are obtained as follows:

determining a cyclic shift value of the pilot frequency according to a cyclic shift indication carried in the downlink control channel or configuration information of a pre-agreed or high-level signaling, or calculating the obtained cyclic shift value of the pilot frequency according to an agreed formula; and/or the presence of a gas in the gas,

and determining the orthogonal sequence of the pilot frequency according to the orthogonal sequence indication carried in the downlink control channel or the configuration information of the prearranged or high-level signaling, or calculating the orthogonal sequence of the pilot frequency according to an agreed formula.

Wherein, the configuration signaling is a high-level signaling or an indication field in the scheduling information of the downlink control channel.

The embodiment of the invention also provides a channel transmission method, which is used for the base station side and comprises the following steps:

determining a first frequency domain resource used for data information transmission carried on a shared channel by a terminal, and sending a downlink control channel to the terminal, wherein the downlink control channel is used for carrying scheduling information of the shared channel, and the first frequency domain resource is contained in the scheduling information;

determining a second frequency domain resource for the terminal to transmit a pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

and receiving data information which is sent by the terminal and carried on the shared channel on the first frequency domain resource, and receiving pilot frequency of the shared channel sent by the terminal on the second frequency domain.

and the TTI length of the downlink control channel is less than 1 ms.

Wherein the step of determining second frequency domain resources for the terminal to transmit pilots of the shared channel comprises:

determining a second frequency domain resource for the terminal to transmit the pilot frequency of the shared channel according to a predetermined convention; alternatively, the first and second electrodes may be,

and determining a second frequency domain resource for the terminal to transmit the pilot frequency of the shared channel, and notifying the second frequency domain resource to the terminal through a configuration signaling, wherein the configuration signaling indicates one or more sub-bandwidths in the a sub-bandwidths obtained by pre-division as the second frequency domain resource.

Wherein the step of determining a second frequency domain resource for the terminal to transmit the pilot of the shared channel according to a predetermined convention comprises:

and determining a second frequency domain resource for transmitting the pilot frequency of the shared channel according to the relative relation between the first frequency domain resource and the A sub-bandwidths obtained by pre-dividing.

Wherein, the step of determining the second frequency domain resource for transmitting the pilot of the shared channel according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing comprises:

Wherein, before receiving the pilot of the shared channel on the second frequency domain resource, the channel transmission method further comprises:

determining that the pilot of the shared channel is a pilot sequence corresponding to the size of the second frequency-domain resource generated according to a base sequence and a cyclic shift value and/or an orthogonal sequence.

Wherein, when the second frequency domain resource is a plurality of sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing a system bandwidth, before receiving the pilot of the shared channel on the second frequency domain resource, the channel transmission method further includes:

determining that the pilot frequency of the shared channel is composed of pilot frequency sequences respectively corresponding to a plurality of sub-bandwidths, wherein each sub-bandwidth is a pilot frequency sequence corresponding to each sub-bandwidth, and the pilot frequency sequence is generated according to a base sequence of each sub-bandwidth and a cyclic shift value and/or an orthogonal sequence; alternatively, the first and second electrodes may be,

and determining that the pilot frequency of the shared channel is composed of the same pilot frequency sequence of a plurality of sub-bandwidths, wherein the same pilot frequency sequence is a first pilot frequency sequence generated according to a base sequence of one sub-bandwidth of the plurality of sub-bandwidths and a cyclic shift value and/or an orthogonal sequence.

The cyclic shift value is determined according to a cyclic shift indication carried in the downlink control channel or configuration information of a pre-agreed or high-level signaling, or is calculated according to an agreed formula; and/or the presence of a gas in the gas,

the orthogonal sequence is determined according to an orthogonal sequence indication carried in the downlink control channel or configuration information of a pre-agreed or high-level signaling, or calculated according to an agreed formula.

An embodiment of the present invention further provides a channel transmission apparatus, used in a terminal side, including:

a channel receiving module, configured to receive a downlink control channel, where the downlink control channel is used to carry scheduling information of a shared channel;

a first resource determining module, configured to determine, according to the downlink control channel, a first frequency domain resource used for transmitting data information carried on the shared channel;

a second resource determining module, configured to determine, according to an indication of a predetermined or configured signaling, a second frequency domain resource for transmitting the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

a transmission module, configured to transmit the data information carried on the shared channel on the first frequency domain resource, and transmit the pilot of the shared channel on the second frequency domain resource.

and the TTI length of the downlink control channel is less than 1 ms.

Wherein the second resource determination module comprises:

a first resource determining sub-module, configured to indicate, by the configuration signaling, one or more sub-bandwidths of the a sub-bandwidths obtained by pre-dividing as the second frequency-domain resource.

Wherein the second resource determination module comprises:

and the second resource determining submodule is used for determining second frequency domain resources for transmitting the pilot frequency according to the relative relation between the first frequency domain resources and the A sub-bandwidths obtained by pre-dividing.

Wherein the second resource determination submodule includes:

a first resource determining unit, configured to determine that the second frequency-domain resource is the one sub-bandwidth including the first frequency-domain resource if all the first frequency-domain resources are included in the one sub-bandwidth of the a sub-bandwidths;

a second resource determining unit, configured to determine that the second frequency-domain resource is the two or more sub-bandwidths including the first frequency-domain resource if the first frequency-domain resource is included in the two or more sub-bandwidths of the a sub-bandwidths.

Wherein, the channel transmission device further comprises:

a first pilot determining module, configured to generate a pilot sequence corresponding to the size of the second frequency-domain resource according to a base sequence and a cyclic shift value and/or an orthogonal sequence, where the pilot sequence is a pilot of the shared channel.

Wherein, the channel transmission device further comprises:

a second pilot frequency determining module, configured to, when the second frequency domain resource is multiple sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing a system bandwidth, generate a pilot frequency sequence corresponding to each sub-bandwidth according to a base sequence of each sub-bandwidth and a cyclic shift value and/or an orthogonal sequence; wherein the pilot sequences of the multiple sub-bandwidths constitute pilots of the shared channel; and/or the presence of a gas in the gas,

a third pilot determining module, configured to, when the second frequency domain resource is multiple sub-bandwidths of multiple sub-bandwidths obtained by pre-dividing a system bandwidth, generate a first pilot sequence according to a base sequence of one sub-bandwidth of the multiple sub-bandwidths and a cyclic shift value and/or an orthogonal sequence; and determining that the pilot sequences of other sub-bandwidths are the same as the first pilot sequence, wherein a plurality of the same first pilot sequences form the pilot of the shared channel.

Wherein, the channel transmission device further comprises:

a cyclic shift value determining module, configured to determine a cyclic shift value of the pilot frequency according to a cyclic shift indication carried in the downlink control channel or configuration information of a pre-agreed or high-level signaling, or calculate the cyclic shift value of the pilot frequency according to an agreed formula; and/or the presence of a gas in the gas,

and the orthogonal sequence determining module is used for determining the orthogonal sequence of the pilot frequency according to the orthogonal sequence indication carried in the downlink control channel or the configuration information of the prearranged or high-level signaling, or calculating the orthogonal sequence of the pilot frequency according to an agreed formula.

An embodiment of the present invention further provides a channel transmission apparatus, which is used at a base station side, and includes:

a channel sending module, configured to determine a first frequency domain resource used for data information transmission carried by a terminal on a shared channel, and send a downlink control channel to the terminal, where the downlink control channel is used to carry scheduling information of the shared channel, and the first frequency domain resource is included in the scheduling information;

a third resource determining module, configured to determine a second frequency domain resource used for the terminal to transmit the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

a receiving module, configured to receive, on the first frequency domain resource, data information that is carried on the shared channel and is sent by the terminal, and receive, on the second frequency domain, a pilot of the shared channel and is sent by the terminal.

and the TTI length of the downlink control channel is less than 1 ms.

Wherein the third resource determining module comprises:

a third resource determining submodule, configured to determine, according to a predetermined agreement, a second frequency domain resource used for the terminal to transmit the pilot of the shared channel; and/or the presence of a gas in the gas,

and a fourth resource determining sub-module, configured to determine a second frequency-domain resource used for the terminal to transmit the pilot of the shared channel, and notify the terminal of the second frequency-domain resource through a configuration signaling, where the configuration signaling indicates one or more sub-bandwidths of the a sub-bandwidths obtained by pre-division as the second frequency-domain resource.

Wherein the third resource determination submodule includes:

and a third resource determining unit, configured to determine, according to a relative relationship between the first frequency domain resource and a number of sub-bandwidths obtained by pre-dividing, a second frequency domain resource used for transmitting the pilot of the shared channel.

Wherein the third resource determination unit includes:

a first resource determining subunit, configured to determine, if all of the first frequency-domain resources are included in one of the a sub-bandwidths, that the second frequency-domain resource is the one sub-bandwidth including the first frequency-domain resource;

a second resource determining subunit, configured to determine that the second frequency-domain resource is the two or more sub-bandwidths including the first frequency-domain resource if the first frequency-domain resource is included in the two or more sub-bandwidths of the a sub-bandwidths.

Wherein, the channel transmission device further comprises:

a fourth pilot determining module, configured to determine that the pilot of the shared channel is a pilot sequence corresponding to the size of the second frequency-domain resource, which is generated according to a base sequence and a cyclic shift value and/or an orthogonal sequence.

Wherein the pilot transmission device further comprises:

a fifth pilot determining module, configured to determine that, when the second frequency domain resource is multiple sub-bandwidths of multiple sub-bandwidths obtained by pre-dividing a system bandwidth, a pilot of the shared channel is formed by pilot sequences respectively corresponding to the multiple sub-bandwidths, and each sub-bandwidth is a pilot sequence corresponding to each sub-bandwidth, where the pilot sequence is generated according to a base sequence of each sub-bandwidth and a cyclic shift value and/or an orthogonal sequence; and/or the presence of a gas in the gas,

a sixth pilot determining module, configured to determine that the pilot of the shared channel is formed by the same pilot sequence of multiple sub-bandwidths when the second frequency-domain resource is multiple sub-bandwidths of multiple sub-bandwidths obtained by pre-dividing a system bandwidth, where the same pilot sequence is the first pilot sequence generated according to the base sequence of one sub-bandwidth of the multiple sub-bandwidths, the cyclic shift value, and/or the orthogonal sequence.

The technical scheme of the invention at least has the following beneficial effects:

in the channel transmission method and device of the embodiment of the invention, the system bandwidth is divided into A sub-bandwidths in advance, one sub-bandwidth or a plurality of sub-bandwidths in the A sub-bandwidths are utilized to transmit the pilot frequency of the shared channel, the orthogonality transmission of a plurality of transmitted pilot frequencies of data transmission with different frequency domain resources but shared pilot frequency resources is ensured, and therefore, the accurate transmission and demodulation of data are ensured while the pilot frequency overhead of short TTI transmission is reduced.

Drawings

Fig. 1 shows a schematic structure of a frame structure 1 used in a frequency division duplex system in the prior art;

fig. 2 is a schematic diagram of a frame structure 2 used in a time division duplex system in the prior art;

fig. 3 is a diagram illustrating a conventional CP pilot structure of a physical uplink shared channel in the prior art;

fig. 4 is a diagram illustrating an extended CP pilot structure of a physical uplink shared channel in the prior art;

fig. 5 is a diagram illustrating that DMRS symbol positions are shared by a plurality of PUSCHs transmitted with a TTI length shorter than 1ms in the prior art, and orthogonality among DMRSs is destroyed;

fig. 6 is a flowchart illustrating the basic steps of a channel transmission method at a terminal side according to a first embodiment of the present invention;

fig. 7 is a flowchart illustrating basic steps of a channel transmission method at a base station side according to a second embodiment of the present invention;

fig. 8 is a schematic diagram illustrating a specific entity of a channel transmission method according to an embodiment of the present invention;

fig. 9 is a structural diagram showing a channel transmission apparatus at a terminal side according to a third embodiment of the present invention;

fig. 10 is a diagram showing the construction of a channel transmission apparatus according to a fourth embodiment and a sixth embodiment of the present invention;

fig. 11 is a block diagram of a channel transmission apparatus on a base station side according to a fifth embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to solve the problem that the orthogonality of the stored pilot is destroyed when the pilot is transmitted at the same symbol position shared by different s-TTIs, the core idea of the present invention is: when different s-TTIs share the same symbol position to transmit the pilot frequency, the pilot frequency of different s-TTIs is transmitted on the frequency domain according to one or more parts in the A parts divided in advance by the system bandwidth, and the data is transmitted according to the size of actually scheduled frequency domain resources.

First embodiment

As shown in fig. 6, a first embodiment of the present invention provides a channel transmission method, used in a terminal side, including:

step 61, receiving a downlink control channel, where the downlink control channel is used to carry scheduling information of a shared channel; the sharing may be an uplink shared channel or a downlink shared channel, and is not limited specifically herein.

Step 62, determining a first frequency domain resource for transmitting the data information carried on the shared channel according to the downlink control channel;

step 63, determining a second frequency domain resource for transmitting the pilot frequency of the shared channel according to the indication of the prearranged or configured signaling; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

step 64, transmitting the data information carried on the shared channel on the first frequency domain resource, and transmitting the pilot frequency of the shared channel on the second frequency domain resource.

In the first embodiment of the present invention, the system bandwidth is divided into a sub-bandwidths in advance, for example, the system bandwidth is 20MHz, and includes 100 resource blocks, and if a is 4, the first sub-bandwidth is 0 th to 24 th resource blocks, the second sub-bandwidth is 25 th to 49 th resource blocks, the third sub-bandwidth is 50 th to 74 th resource blocks, and the fourth sub-bandwidth is 75 th to 99 th resource blocks. The foregoing illustrates that the system bandwidth is divided into 4 sub-bandwidths on average, and it should be noted that the uneven distribution manner is also applicable to the present application, and the uneven distribution manner is not illustrated again.

Because the second frequency domain resource for transmitting the pilot frequency of the shared channel is one or more of the A sub-bandwidths, the situation that the pilot frequencies of different TTIs are not partially overlapped on the frequency domain is avoided, thereby ensuring the orthogonality of the pilot frequencies of different TTIs sharing the same row of pilot frequencies, and ensuring the correct transmission and demodulation of data while reducing the pilot frequency overhead of TTI transmission.

In the first embodiment of the present invention, the TTI length of the transmission time interval of the shared channel is less than 1 ms; and/or the TTI length of the downlink control channel is less than 1 ms. Namely, the shared channel and/or the downlink control channel adopt a short TTI for channel transmission.

Further, in the above embodiments of the present invention, each of the sub-bandwidths includes resource blocks with the same number or different numbers; alternatively, the first and second electrodes may be,

It should be noted that, when each sub-bandwidth includes different numbers of resource blocks/subcarriers/resource units, the adjacent sub-bandwidths may be continuous or discontinuous in the frequency domain, that is, each sub-bandwidth block of a sub-bandwidths includes a resource block/subcarrier/resource unit with a fixed size; when each sub-bandwidth contains different numbers of resource blocks/subcarriers/resource units, if a sub-bandwidths are obtained by equally dividing the system bandwidth blocks, the adjacent sub-bandwidths are continuous in the frequency domain.

Further, the first embodiment of the present invention provides 2 methods to determine the second frequency domain resource:

the method comprises the following steps: namely, step 63 includes:

step 631, the configuration signaling indicates one or more sub-bandwidths of the a sub-bandwidths obtained by pre-dividing as the second frequency domain resources.

Namely, the system bandwidth is pre-divided into a sub-bandwidths, and the configuration signaling indicates one or more sub-bandwidths of the a sub-bandwidths as the second frequency domain resources.

Wherein, the configuration signaling is a high-level signaling or an indication field in the scheduling information of the downlink control channel. The configuration signaling may be configured in advance, or may be configured by the base station or other nodes on the network side during the operation, which is not limited herein.

The method 2 comprises the following steps: namely, step 63 includes:

step 632, determining a second frequency domain resource for transmitting the pilot frequency according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing.

Namely, the system bandwidth is divided into a number of sub-bandwidths in advance, and the second frequency domain resource is determined according to the relative position of the first frequency domain resource and the A number of sub-bandwidths. Specifically, step 632 includes:

That is, the base station and the terminal agree in advance that if all the first frequency domain resources are included in one sub-bandwidth of the a sub-bandwidths, the second frequency domain resources are determined to be the one sub-bandwidth including the first frequency domain resources; if the first frequency domain resource is included in two or more than two sub-bandwidths of the a sub-bandwidths, determining that the second frequency domain resource is the two or more than two sub-bandwidths including the first frequency domain resource, so that both the base station and the terminal can determine the second frequency domain resource for transmitting the pilot frequency according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-division.

Further, before transmitting the pilot of the shared channel on the second frequency domain resource, the first embodiment of the present invention further discloses a method for acquiring the pilot, that is, the channel transmission method in the first embodiment further includes:

and 65, generating a pilot frequency sequence corresponding to the size of the second frequency domain resource according to the base sequence and the cyclic shift value and/or the orthogonal sequence, wherein the pilot frequency sequence is a pilot frequency of the shared channel.

In the above embodiment of the present invention, whether the second frequency domain resource is one of a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth or a plurality of sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth, the pilot frequency obtaining method includes: performing cyclic shift on the base sequence according to the base sequence and the cyclic shift value to generate a pilot frequency sequence corresponding to the size of the second frequency domain resource; or, performing orthogonal spread spectrum on the base sequence according to the base sequence and the orthogonal sequence to generate a pilot frequency sequence corresponding to the size of the second frequency domain resource; or, performing orthogonal spreading and cyclic shift on the base sequence according to the base sequence and the orthogonal sequence and cyclic shift to generate a pilot sequence corresponding to the size of the second frequency domain resource.

It should be noted that, for the case where the second frequency domain resource is a plurality of sub-bandwidths in a sub-bandwidths obtained by dividing the system bandwidth in advance, the pilot of each sub-bandwidth may be generated separately or only one re-copy multi-pass may be generated, and the case of generating separately and the case of generating only one re-copy multi-pass are described below:

that is, when the second frequency domain resource is a plurality of sub-bandwidths in a number of sub-bandwidths obtained by pre-dividing the system bandwidth, before the pilot frequency of the shared channel is transmitted on the second frequency domain resource, the first embodiment of the present invention further discloses a pilot frequency obtaining method, that is, the channel transmission method further includes:

step 66, generating a pilot frequency sequence corresponding to each sub-bandwidth according to the base sequence of each sub-bandwidth and the cyclic shift value and/or the orthogonal sequence; wherein the pilot sequences of the multiple sub-bandwidths constitute pilots of the shared channel; step 66 is the case where the pilots for each sub-bandwidth are generated separately.

When the second frequency domain resource is a plurality of sub-bandwidths in a plurality of sub-bandwidths pre-divided by the system bandwidth, the pilot sequence is independently generated for each sub-bandwidth of the plurality of sub-bandwidths, and a base sequence and/or a cyclic shift value and/or an orthogonal sequence of a pilot corresponding to each sub-bandwidth may be the same or different, that is, the terminal generates a plurality of pilot sequences with a length of B, respectively, where B is a frequency domain length of one sub-bandwidth in a plurality of sub-bandwidths pre-divided by the system bandwidth, and is mapped to each sub-bandwidth in the plurality of sub-bandwidths for transmission.

It should be noted that, when the cyclic shift value and/or the orthogonal sequence of each sub-bandwidth are different, the cyclic shift value and/or the orthogonal sequence number may be notified separately for each sub-bandwidth, or only the cyclic shift value and/or the orthogonal sequence number corresponding to the first sub-bandwidth may be notified, and the cyclic shift values and/or the orthogonal sequence numbers corresponding to other sub-bandwidths are obtained based on the cyclic shift value and/or the orthogonal sequence number corresponding to the first sub-bandwidth and a pre-agreed offset value.

Or, the channel transmission method further includes:

step 67, generating a first pilot sequence according to the base sequence of one of the plurality of sub-bandwidths and the cyclic shift value and/or the orthogonal sequence; and determining that the pilot sequences of other sub-bandwidths are the same as the first pilot sequence, wherein a plurality of the same first pilot sequences form the pilot of the shared channel. Step 67 is a situation where only one re-copy multiple pass is generated.

When the second frequency domain resource is a plurality of sub-bandwidths in a plurality of sub-bandwidths pre-divided by the system bandwidth, the pilot frequency is generated according to the frequency domain length of one sub-bandwidth of the plurality of sub-bandwidths, and is respectively mapped to each sub-bandwidth of the plurality of sub-bandwidths for transmission, that is, the pilot frequency is generated only for one sub-bandwidth, a plurality of copies are copied, and are respectively mapped to the plurality of sub-bandwidths for transmission, that is, the pilot frequency sequences transmitted in each sub-bandwidth are the same, that is, the base sequences are the same, and the cyclic shift values are the same.

It should be noted that the method of generating only one pilot and duplicating multiple copies requires that the frequency domain length of each sub-bandwidth is the same.

Further, in the first embodiment of the present invention, the cyclic shift value and/or the orthogonal sequence are obtained as follows:

In summary, the terminal side in the first embodiment of the present invention, by adjusting the transmission bandwidth of the pilot, ensures that the frequency domain resources of data transmission are different but the orthogonality transmission of multiple transmitted pilots sharing the pilot resources is ensured, thereby ensuring correct transmission and demodulation of data while reducing the pilot overhead of short TTI transmission.

Second embodiment

As shown in fig. 7, a second embodiment of the present invention provides a channel transmission method, used on a base station side, including:

step 71, determining a first frequency domain resource for data information transmission carried on a shared channel by a terminal, and sending a downlink control channel to the terminal, where the downlink control channel is used to carry scheduling information of the shared channel, and the first frequency domain resource is included in the scheduling information; the sharing may be an uplink shared channel or a downlink shared channel, and is not limited specifically herein.

Step 72, determining a second frequency domain resource for the terminal to transmit the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

and 73, receiving the data information which is sent by the terminal and loaded on the shared channel on the first frequency domain resource, and receiving the pilot frequency of the shared channel sent by the terminal on the second frequency domain.

Correspondingly, the second embodiment of the present invention also divides the system bandwidth into a sub-bandwidths in advance, for example, the system bandwidth is 20MHz and includes 100 resource blocks, and if a is 4, the first sub-bandwidth is 0 th to 24 th resource blocks, the second sub-bandwidth is 25 th to 49 th resource blocks, the third sub-bandwidth is 50 th to 74 th resource blocks, and the fourth sub-bandwidth is 75 th to 99 th resource blocks. The foregoing illustrates that the system bandwidth is divided into 4 sub-bandwidths on average, and it should be noted that the uneven distribution manner is also applicable to the present application, and the uneven distribution manner is not illustrated again.

In a second embodiment of the present invention, a TTI length of a transmission time interval of the shared channel is less than 1 ms; and/or the TTI length of the downlink control channel is less than 1 ms. Namely, the shared channel and/or the downlink control channel adopt a short TTI for channel transmission.

Further, the second embodiment of the present invention also provides 2 methods to determine the second frequency domain resource:

the method 3 comprises the following steps: step 72 comprises:

step 721, determining a second frequency domain resource for the terminal to transmit the pilot of the shared channel according to a predetermined agreement; alternatively, the first and second electrodes may be,

the method 4 comprises the following steps: step 72 comprises:

step 722, determining a second frequency domain resource for the terminal to transmit the pilot of the shared channel, and notifying the terminal of the second frequency domain resource through a configuration signaling, where the configuration signaling indicates one or more sub-bandwidths of the a pre-divided sub-bandwidths as the second frequency domain resource.

Method 4 is to divide the system bandwidth into a sub-bandwidths in advance, and the base station can directly determine one or more sub-bandwidths as the second frequency domain resources; and notifying the terminal through a configuration signaling, wherein the configuration signaling indicates one or more sub-bandwidths in the A sub-bandwidths as the second frequency domain resources. Wherein, the configuration signaling is a high-level signaling or an indication field in the scheduling information of the downlink control channel. The configuration signaling may be configured in advance, or may be configured by the base station or other nodes on the network side during the operation, which is not limited herein.

Specifically, step 721 in method 3 includes:

step 7211, determining a second frequency domain resource for transmitting the pilot of the shared channel according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing. Namely, the system bandwidth is divided into a number of sub-bandwidths in advance, and the second frequency domain resource is determined according to the relative position of the first frequency domain resource and the A number of sub-bandwidths. Specifically, step 7211 includes:

Further, before receiving the pilot of the shared channel on the second frequency domain resource, the base station side needs to know a method for generating the terminal side pilot, so as to perform a correlation operation according to the pilot, for example, according to the method for generating the terminal side pilot, a pilot sequence sent by the terminal side is generated, and further according to the pilot sequence sent by the terminal side and the pilot sequence received by the base station side, a channel estimation of the terminal is obtained, so as to correctly receive the shared channel sent by the terminal, that is, the channel transmission method in the second embodiment further includes:

step 74, determining that the pilot of the shared channel is a pilot sequence corresponding to the size of the second frequency domain resource generated according to a base sequence and a cyclic shift value and/or an orthogonal sequence.

In the above embodiment of the present invention, whether the second frequency domain resource is one of a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth or a plurality of sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth, the pilot frequency generation method includes: the terminal carries out cyclic shift on the base sequence according to the base sequence and the cyclic shift value to generate a pilot frequency sequence corresponding to the size of the second frequency domain resource; or, the terminal performs orthogonal spread spectrum on the base sequence according to the base sequence and the orthogonal sequence to generate a pilot frequency sequence corresponding to the size of the second frequency domain resource; or, performing orthogonal spreading and cyclic shift on the base sequence according to the base sequence and the orthogonal sequence and cyclic shift to generate a pilot sequence corresponding to the size of the second frequency domain resource.

It should be noted that, for the case where the second frequency domain resource is a plurality of sub-bandwidths in a sub-bandwidths obtained by dividing the system bandwidth in advance, the pilot of each sub-bandwidth may be generated separately or only one re-duplicated multi-pass may be generated, and the following describes a method for generating the pilot in the case of generating separately and in the case of generating only one re-duplicated multi-pass respectively:

that is, when the second frequency domain resource is a plurality of sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing the system bandwidth, before receiving the pilot of the shared channel on the second frequency domain resource, the base station needs to know a pilot generation method, that is, the channel transmission method further includes:

step 75, determining that the pilot of the shared channel is composed of pilot sequences respectively corresponding to a plurality of sub-bandwidths, and each sub-bandwidth is a pilot sequence corresponding to each sub-bandwidth, wherein the pilot sequence is generated according to a base sequence of each sub-bandwidth and a cyclic shift value and/or an orthogonal sequence; step 75 is a method of generating pilots for a shared channel in the case where pilots for each sub-bandwidth are generated separately.

When the pilots of each sub-bandwidth are generated separately, the pilot sequences of different sub-bandwidths may be the same or different.

Or, the channel transmission method further includes:

step 76, determining that the pilot of the shared channel is composed of the same pilot sequence of a plurality of sub-bandwidths, and the same pilot sequence is the first pilot sequence generated according to the base sequence of one of the plurality of sub-bandwidths and the cyclic shift value and/or the orthogonal sequence. Step 75 is a method of generating a pilot for the shared channel in the case of only one re-copy multiple pass.

Specifically, in the second embodiment of the present invention, the cyclic shift value is determined according to a cyclic shift indication carried in the downlink control channel, or pre-agreed or configuration information of a high-level signaling, or is calculated according to an agreed formula; and/or the presence of a gas in the gas,

In summary, in the second embodiment of the present invention, the base station side adjusts the transmission bandwidth of the pilot to ensure that the frequency domain resources of data transmission are different but the orthogonality transmission of multiple transmitted pilots sharing the pilot resources is performed, so as to ensure correct transmission and demodulation of data while reducing the pilot overhead of short TTI transmission.

The channel transmission method of the present invention is described below with reference to a specific example:

first, it is stated that the resource unit in the present invention is defined as one subcarrier, i.e., RE, on one symbol, or as X2 REs/SC, RU for short, which are consecutive in the frequency domain on one symbol, and X2 is a positive integer greater than 0. In the embodiments of the present invention, the pilot is also referred to as a reference symbol, or DMRS, and is used for data demodulation, and in the following examples, the pilot is collectively referred to as DMRS.

As shown in fig. 8, for example, two s-TTIs with a length of 4 symbols share the same DMRS column, and the uplink bandwidth of the system is 20MHz, and the system includes 100 physical resource blocks, that is, the number of subcarriers is 0 to 1199, or the number of resource blocks RB is 0 to 99, or the number of resource units RU is 0 to 99 (when RU is taken as a unit, it is assumed that each RU includes 1 symbol in the time domain and includes 12 SCs in the frequency domain, and is defined from the minimum SC side, and starts with RU0, and the same applies below, of course, an RU may also be defined as including more symbols in the time domain and/or including more SCs in the frequency domain); the system bandwidth is divided into 4 parts in advance, the first part is subcarriers 0-299 or RB 0-24 or RU 0-24, the second part is subcarriers 300-599 or RB 25-49 or RU 25-49, the third part is subcarriers 600-899 or RB 50-74 or RU 50-74, and the fourth part is subcarriers 900-1199 or RB 75-99 or RU 75-99.

Transmission 1 in S-TTI1 and transmission 2 in S-TTI2 share DMRS resources.

The first frequency domain resource occupied by data transmission indicated by the scheduling signaling of transmission 1 in the S-TTI1 is subcarrier 12-131, RB 1-RB 10, or RU 1-RU 10, and the first frequency domain resource is included in a first sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth, so that the DMRS for transmission 1 in the S-TTI1 is transmitted on the frequency domain resource corresponding to the first sub-bandwidth of the 4 sub-bandwidths pre-divided by the system bandwidth, that is: data of transmission 1 in the s-TTI1 are transmitted on subcarriers 12-131, RB 1-RB 10 or RU 1-RU 10, the DMRS is transmitted in subcarriers 0-299, RB 0-24 or RU 0-24, and the DMRS is obtained after cyclic shift of CS-0 is carried out on a base sequence of the DMRS.

The first frequency domain resource occupied by data transmission scheduled by scheduling signaling of transmission 2 in the S-TTI2 is subcarrier 0-251, RB 0-RB 20 or RU 0-RU 20, and the first frequency domain resource is contained in the first sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth, so that the DMRS for transmission 2 in the S-TTI2 is transmitted on the frequency domain resource corresponding to the first sub-bandwidth of the 4 sub-bandwidths pre-divided by the system bandwidth, that is, the data for transmission 2 in the S-TTI2 is transmitted on subcarrier 0-299, RB 0-RB 20 or RU 0-RU 20, the DMRS is transmitted in subcarrier 0-299, RB 0-24 or RU35 0-24, and the DMRS is obtained after cyclic shift of CS ═ 3 on the base sequence.

Since the DMRS sequences for transmission 1 and transmission 2 have the same length and the mapping positions are completely the same, the base station may separate the DMRSs for transmission 1 and transmission 2 mapped on the same resource by using corresponding cyclic shifts.

Transmission 3 in S-TTI1 and transmission 4 in S-TTI2 share DMRS resources, and transmission 5 in S-TTI1 and transmission 4 in S-TTI2 share DMRS resources.

The first frequency domain resource occupied by data transmission indicated by the scheduling signaling for transmitting 3 in the S-TTI1 is a subcarrier 420-599, or an RB 35-RB 49, or an RU 35-RU 49, where the first frequency domain resource is included in a second sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth, and the DMRS for transmitting 3 in the S-TTI1 is transmitted on the frequency domain resource corresponding to the second sub-bandwidth of the 4 sub-bandwidths pre-divided by the system bandwidth, that is: data of transmission 3 in the s-TTI1 are transmitted on subcarriers 420-599, RB 35-RB 49 or RU 35-RU 49, the DMRS is transmitted in subcarriers 300-599, RB 25-49 or RU 25-49, and the DMRS is obtained after cyclic shift of CS 6 is carried out on a base sequence of the DMRS.

The first frequency domain resource occupied by data transmission scheduled by the scheduling signaling of transmission 4 in the S-TTI2 is subcarrier 468-839 or RB 39-RB 69 or RU 39-RU 69, the first frequency domain resource is contained in the second sub-bandwidth and the third sub-bandwidth in 4 sub-bandwidths pre-divided by the system bandwidth, then the DMRS of transmission 4 in the S-TTI2 is transmitted on the frequency domain resource corresponding to the second and third sub-bandwidths in 4 sub-bandwidths pre-divided by the system bandwidth, namely the data of transmission 4 in the S-TTI2 is transmitted on subcarrier 468-839 or RB 39-RB 69 or RU 39-RU 69, the DMRS is transmitted in subcarrier 300-899 or RB 25-74 or RU 25-RU 3674, and when the DMRS is generated: one way is to generate two DMRS sequences with a length of 300 subcarriers or 25 RBs or 25 RUs, respectively, where the base sequence of each DMRS sequence may be the same or different, and the cyclic shift of each DMRS sequence may be the same or different, and map to the second sub-bandwidth and the third sub-bandwidth of the system bandwidth, respectively, for example, using the cyclic shift CS-9 in the second sub-bandwidth and using the cyclic shift CS-9 or CS-0 in the third sub-bandwidth, but the cyclic shift of a DMRS transmitted in the second sub-bandwidth and the third sub-bandwidth of the system bandwidth needs to be different from the cyclic shift of another DMRS that shares transmission of the DMRS with the DMRS; another way is to generate only 1 DMRS sequence with a length of 300 subcarriers or 25 RBs or 25 RUs, where the DMRS sequence is obtained by cyclically shifting a DMRS base sequence by CS-9, and then map the same sequence to a second sub-bandwidth and a third sub-bandwidth of the system bandwidth for transmission.

The first frequency domain resources occupied by data transmission scheduled by scheduling signaling for transmission 5 in the S-TTI1 are subcarriers 720-863, or RB 60-RB 71, or RU 60-RU 71, and the first frequency domain resources are contained in the third sub-bandwidth of 4 sub-bandwidths divided in advance by the system bandwidth, so that the DMRS for transmission 5 in the S-TTI1 is transmitted on the frequency domain resources corresponding to the third sub-bandwidth of the 4 sub-bandwidths divided in advance by the system bandwidth, that is, the data for transmission 5 in the S-TTI1 is transmitted on the subcarriers 720-863, or RB 60-RB 71, or RU 60-RU 71, the DMRS is transmitted in the subcarriers 600-899, or RB 50-74, or RU 50-DMRS 74, and the DMRS is obtained after cyclic shift of CS 3 on the base sequence.

Since the DMRS sequences of transmission 3 and transmission 4 in the second sub-bandwidth of the system bandwidth have the same length and the mapping positions are completely the same, the base station side may separate the DMRSs of transmission 3 and transmission 4 mapped on the same resource by using corresponding cyclic shifts.

Since the DMRS sequences of transmission 5 and transmission 4 in the third sub-bandwidth of the system bandwidth have the same length and the mapping positions are completely the same, the base station side may separate the DMRSs of transmission 5 and transmission 4 mapped on the same resource by using corresponding cyclic shifts.

It should be noted that, in the above specific example, instead of implicitly determining the size of the second frequency domain resource according to the overlapping/including relationship between the first frequency domain resource and the 4 pre-divided portions in the system bandwidth, a new example can be obtained by directly determining the size of the second frequency domain resource according to the notification of the configuration signaling, in the new example, the terminal may directly transmit data according to the first frequency domain resource occupied by the data transmission indicated by the scheduling signaling, and generate and transmit the DMRS of the data according to the size of the second frequency domain resource indicated by the configuration signaling; wherein, the configuration signaling may be notified in advance by a higher layer signaling, or the configuration signaling is directly carried in the scheduling signaling, that is, the first frequency domain resource and the second frequency domain resource may be obtained simultaneously by one transmitted UL/DL grant (uplink scheduling grant/downlink scheduling grant), preferably, the second frequency domain resource size that the configuration signaling may configure may be not smaller than the second frequency domain resource size determined in the manner in the previous example, that for transmission 1, the configuration signaling may configure the second frequency domain resource for DMRS transmission thereof as a first sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth, of course, the configuration signaling may also be configured as a first sub-bandwidth and a second sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth, or may be configured as a second sub-bandwidth of 4 sub-bandwidths pre-divided by the system bandwidth (for example, the base station determines that the interference in the first sub-bandwidth is larger or the channel condition is worse through a priori information, when DMRS transmission is not appropriate).

Third embodiment

As shown in fig. 9, a third embodiment of the present invention provides a channel transmission apparatus for a terminal side, including:

a channel receiving module 81, configured to receive a downlink control channel, where the downlink control channel is used to carry scheduling information of a shared channel;

a first resource determining module 82, configured to determine, according to the downlink control channel, a first frequency domain resource used for transmitting data information carried on the shared channel;

a second resource determining module 83, configured to determine, according to an indication of a predetermined or configured signaling, a second frequency domain resource used for transmitting the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

a transmission module 84, configured to transmit the data information carried on the shared channel on the first frequency-domain resource, and transmit the pilot of the shared channel on the second frequency-domain resource.

Specifically, in the third embodiment of the present invention, the TTI length of the transmission time interval of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

Specifically, each of the sub-bandwidths in the third embodiment of the present invention includes resource blocks with the same number or different numbers; alternatively, the first and second electrodes may be,

Specifically, in a third embodiment of the present invention, the second resource determining module includes:

Specifically, in the third embodiment of the present invention, the second resource determining sub-module includes:

Specifically, in the third embodiment of the present invention, the channel transmission apparatus further includes:

Specifically, in the third embodiment of the present invention, the configuration signaling is a higher layer signaling or an indication field in the scheduling information of the downlink control channel.

In the third embodiment of the present invention, the terminal side adjusts the transmission bandwidth of the pilot frequency to ensure the orthogonality transmission of multiple transmitted pilot frequencies that share the pilot frequency resource but have different frequency domain resources for data transmission, thereby reducing the pilot frequency overhead of short TTI transmission and ensuring the correct transmission and demodulation of data.

It should be noted that the terminal-side channel transmission apparatus provided in the third embodiment of the present invention is a channel transmission apparatus corresponding to the terminal-side channel transmission method provided in the first embodiment, so that all embodiments of the terminal-side channel transmission method are applicable to the channel transmission apparatus, and can achieve the same or similar beneficial effects.

Fourth embodiment

In order to better achieve the above object, as shown in fig. 10, a fourth embodiment of the present invention further provides a channel transmission apparatus for a terminal side, the channel transmission apparatus including: a processor 100; a memory 120 connected to the processor 100 through a bus interface, and a transceiver 110 connected to the processor 100 through a bus interface; the memory is used for storing programs and data used by the processor in executing operations; transmitting data information or pilot frequency through the transceiver 110, and receiving a downlink control channel through the transceiver 110; when the processor calls and executes the programs and data stored in the memory, the following functional modules are implemented:

Where in fig. 10 the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 100, and memory, represented by memory 120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 110 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 100 is responsible for managing the bus architecture and general processing, and the memory 120 may store data used by the processor 100 in performing operations.

The processor 100 is responsible for managing the bus architecture and general processing, and the memory 120 may store data used by the processor 100 in performing operations.

It should be noted that the terminal-side channel transmission apparatus provided in the fourth embodiment of the present invention is a channel transmission apparatus corresponding to the terminal-side channel transmission method provided in the first embodiment, so that all embodiments of the terminal-side channel transmission method are applicable to the channel transmission apparatus, and can achieve the same or similar beneficial effects.

Fifth embodiment

As shown in fig. 11, a fifth embodiment of the present invention further provides a channel transmission apparatus, used on a base station side, including:

a channel sending module 111, configured to determine a first frequency domain resource used for data information transmission that a terminal bears on a shared channel, and send a downlink control channel to the terminal, where the downlink control channel is used to bear scheduling information of the shared channel, and the first frequency domain resource is included in the scheduling information;

a third resource determining module 112, configured to determine a second frequency domain resource for the terminal to transmit the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1;

a receiving module 113, configured to receive, on the first frequency domain resource, data information carried on the shared channel and sent by the terminal, and receive, on the second frequency domain, a pilot of the shared channel and sent by the terminal.

Specifically, in the fifth embodiment of the present invention, the TTI length of the transmission time interval of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

Specifically, in the fifth embodiment of the present invention, each of the sub-bandwidths includes resource blocks with the same number or different numbers; alternatively, the first and second electrodes may be,

Specifically, in a fifth embodiment of the present invention, the third resource determining module includes:

Specifically, in a fifth embodiment of the present invention, the third resource determining sub-module includes:

Specifically, in a fifth embodiment of the present invention, the third resource determining unit includes:

Specifically, in a fifth embodiment of the present invention, the channel transmission apparatus further includes:

Specifically, in the fifth embodiment of the present invention, the pilot transmission apparatus further includes:

Specifically, in the fifth embodiment of the present invention, the cyclic shift value is determined according to a cyclic shift indication carried in the downlink control channel, or pre-agreed or configuration information of a high-level signaling, or is calculated according to an agreed formula; and/or the presence of a gas in the gas,

Specifically, in a fifth embodiment of the present invention, the configuration signaling is a higher layer signaling or an indication field in scheduling information of the downlink control channel.

In the fifth embodiment of the present invention, the base station side adjusts the transmission bandwidth of the pilot frequency to ensure the orthogonality transmission of multiple transmitted pilot frequencies that share the pilot frequency resource but have different frequency domain resources for data transmission, thereby reducing the pilot frequency overhead of short TTI transmission and ensuring the correct transmission and demodulation of data.

It should be noted that the base station side channel transmission apparatus provided in the fifth embodiment of the present invention is a channel transmission apparatus corresponding to the base station side channel transmission method provided in the second embodiment, so that all embodiments of the base station side channel transmission method are applicable to the channel transmission apparatus, and can achieve the same or similar beneficial effects.

Sixth embodiment

In order to better achieve the above object, as shown in fig. 10, a sixth embodiment of the present invention further provides a channel transmission apparatus for use on a base station side, including: a processor 100; a memory 120 connected to the processor 100 through a bus interface, and a transceiver 110 connected to the processor 100 through a bus interface; the memory is used for storing programs and data used by the processor in executing operations; transmitting data information or pilot frequency through the transceiver 110, and receiving a downlink control channel through the transceiver 110; when the processor calls and executes the programs and data stored in the memory, the following functional modules are implemented:

The processor 100 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 100 in performing operations.

It should be noted that the base station side channel transmission apparatus provided in the sixth embodiment of the present invention is a channel transmission apparatus corresponding to the base station side channel transmission method provided in the second embodiment, so that all embodiments of the base station side channel transmission method are applicable to the channel transmission apparatus, and can achieve the same or similar beneficial effects.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A channel transmission method for a terminal side, comprising:

determining a second frequency domain resource for transmitting the pilot frequency of the shared channel according to the indication of the prearranged or configured signaling; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1; wherein, one sub-bandwidth comprises a plurality of continuous sub-carriers or resource blocks or resource units;

transmitting data information carried on the shared channel on the first frequency domain resource, and transmitting a pilot of the shared channel on the second frequency domain resource;

determining a second frequency domain resource for transmitting pilot frequency according to the relative relation between the first frequency domain resource and the A sub-bandwidths obtained by pre-dividing;

the step of determining a second frequency domain resource for transmitting the pilot frequency according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing comprises:

2. The channel transmission method of claim 1, wherein a transmission time interval, TTI, length of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

3. The channel transmission method according to claim 1, wherein each of the sub-bandwidths includes the same number or different number of resource blocks; alternatively, the first and second electrodes may be,

4. The channel transmission method of claim 1, wherein the step of determining the second frequency-domain resource for transmitting the pilot according to the indication of the configuration signaling comprises:

5. The channel transmission method as claimed in claim 1, wherein the channel transmission method further comprises, before transmitting the pilot of the shared channel on the second frequency-domain resource:

6. The channel transmission method according to claim 1, wherein when the second frequency-domain resource is a plurality of sub-bandwidths of a sub-bandwidths obtained by pre-dividing a system bandwidth, before transmitting the pilot of the shared channel on the second frequency-domain resource, the channel transmission method further comprises:

7. The channel transmission method according to claim 5 or 6, wherein the cyclic shift value and/or the orthogonal sequence are obtained as follows:

8. The channel transmission method according to claim 1 or 4, wherein the configuration signaling is an indication field in scheduling information of a higher layer signaling or the downlink control channel.

9. A channel transmission method for a base station, comprising:

determining a second frequency domain resource for the terminal to transmit a pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1; wherein, one sub-bandwidth comprises a plurality of continuous sub-carriers or resource blocks or resource units;

receiving data information which is sent by the terminal and carried on the shared channel on the first frequency domain resource, and receiving pilot frequency of the shared channel sent by the terminal on the second frequency domain;

the determining a second frequency domain resource for the terminal to transmit a pilot of the shared channel includes:

determining a second frequency domain resource for transmitting the pilot frequency of the shared channel according to the relative relation between the first frequency domain resource and the A sub-bandwidths obtained by pre-dividing;

the step of determining a second frequency domain resource for transmitting the pilot of the shared channel according to the relative relationship between the first frequency domain resource and the a sub-bandwidths obtained by pre-dividing comprises:

10. The channel transmission method of claim 9, wherein a transmission time interval, TTI, length of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

11. The channel transmission method according to claim 9, wherein each of the sub-bandwidths includes the same number or different number of resource blocks; alternatively, the first and second electrodes may be,

12. The channel transmission method of claim 9, wherein the step of determining the second frequency-domain resource for the terminal to transmit the pilot of the shared channel comprises:

13. The channel transmission method as claimed in claim 9, wherein before receiving the pilot of the shared channel on the second frequency-domain resource, the channel transmission method further comprises:

14. The channel transmission method of claim 9, wherein when the second frequency-domain resource is a plurality of sub-bandwidths of a plurality of sub-bandwidths obtained by pre-dividing a system bandwidth, before receiving the pilot of the shared channel on the second frequency-domain resource, the channel transmission method further comprises:

15. The channel transmission method according to claim 13 or 14,

16. The channel transmission method according to claim 12, wherein the configuration signaling is an indication field in scheduling information of a higher layer signaling or the downlink control channel.

17. A channel transmission apparatus for a terminal side, comprising:

a second resource determining module, configured to determine, according to an indication of a predetermined or configured signaling, a second frequency domain resource for transmitting the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1; wherein, one sub-bandwidth comprises a plurality of continuous sub-carriers or resource blocks or resource units;

a transmission module, configured to transmit data information carried on the shared channel on the first frequency domain resource, and transmit a pilot of the shared channel on the second frequency domain resource;

the second resource determination module includes:

a second resource determining submodule, configured to determine, according to a relative relationship between the first frequency domain resource and a number a of sub-bandwidths obtained by pre-division, a second frequency domain resource for transmitting a pilot;

the second resource determination submodule includes:

18. The channel transmission apparatus of claim 17, wherein a transmission time interval, TTI, length of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

19. The channel transmission apparatus of claim 17, wherein each of the sub-bandwidths includes the same number or different numbers of resource blocks; alternatively, the first and second electrodes may be,

20. The channel transmission apparatus of claim 17, wherein the second resource determining module comprises:

21. The channel transmission apparatus as claimed in claim 17, wherein said channel transmission apparatus further comprises:

22. The channel transmission apparatus as claimed in claim 17, wherein said channel transmission apparatus further comprises:

23. The channel transmission apparatus as claimed in claim 21 or 22, wherein said channel transmission apparatus further comprises:

24. The channel transmission apparatus according to claim 17 or 20, wherein the configuration signaling is an indication field in scheduling information of a higher layer signaling or the downlink control channel.

25. A channel transmission apparatus for use in a base station side, comprising:

a third resource determining module, configured to determine a second frequency domain resource used for the terminal to transmit the pilot of the shared channel; the second frequency domain resource is one or more sub-bandwidths in A sub-bandwidths obtained by pre-dividing the system bandwidth, wherein A is an integer greater than 1; wherein, one sub-bandwidth comprises a plurality of continuous sub-carriers or resource blocks or resource units;

a receiving module, configured to receive, on the first frequency domain resource, data information carried on the shared channel and sent by the terminal, and receive, on the second frequency domain, a pilot of the shared channel and sent by the terminal;

the third resource determination module comprises:

a third resource determining unit, configured to determine, according to a relative relationship between the first frequency domain resource and a number a of sub-bandwidths obtained by pre-division, a second frequency domain resource used for transmitting a pilot of the shared channel;

the third resource determination unit includes:

26. The channel transmission apparatus of claim 25, wherein a transmission time interval, TTI, length of the shared channel is less than 1 ms; and/or the presence of a gas in the gas,

and the TTI length of the downlink control channel is less than 1 ms.

27. The channel transmission apparatus of claim 25, wherein each of the sub-bandwidths includes the same number of resource blocks or different numbers of resource blocks; alternatively, the first and second electrodes may be,

28. The channel transmission apparatus of claim 25, wherein the third resource determining module comprises:

29. The channel transmission apparatus as claimed in claim 25, wherein said channel transmission apparatus further comprises:

30. The channel transmission apparatus as claimed in claim 25, wherein said pilot transmission means further comprises:

31. The channel transmission apparatus as claimed in claim 29 or 30,

32. The channel transmission apparatus according to claim 28, wherein the configuration signaling is an indication field in scheduling information of a higher layer signaling or the downlink control channel.