CN107809305A - A kind of transmission method and equipment of uplink information and detection reference signal - Google Patents

A kind of transmission method and equipment of uplink information and detection reference signal Download PDF

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Publication number
CN107809305A
CN107809305A CN201610814870.1A CN201610814870A CN107809305A CN 107809305 A CN107809305 A CN 107809305A CN 201610814870 A CN201610814870 A CN 201610814870A CN 107809305 A CN107809305 A CN 107809305A
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China
Prior art keywords
subframe
uplink information
srs
transmission
length
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CN201610814870.1A
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Chinese (zh)
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付景兴
喻斌
钱辰
熊琦
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Priority to CN201610814870.1A priority Critical patent/CN107809305A/en
Publication of CN107809305A publication Critical patent/CN107809305A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

This application discloses a kind of uplink information and the transmission method of reference signal, including：Determine the subframe lengths of UE uplink informations transmission subframe；The transmission means of detection reference signal SRS and uplink information in same subframe is determined according to the subframe lengths；According to the transmission means transmission SRS and/or uplink information determined.Using the application, it is possible to increase the transmission performance of SRS and/or uplink information.

Description

Method and equipment for transmitting uplink information and sounding reference signal
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting uplink information and a Sounding Reference Signal (SRS).
Background
In the Long Term Evolution Advanced (LTE-a) system, each radio frame is 10ms in length and is equally divided into 10 subframes. A Transmission Time Interval (TTI) is defined over one subframe. Fig. 1 is a schematic diagram of a frame structure of a Frequency Division Duplex (FDD) system, where each downlink subframe includes two time slots, and each time slot includes 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols for a general Cyclic Prefix (CP) length; for extended CP length, each slot contains 6 OFDM symbols.
As shown in fig. 2, which is a schematic diagram of a subframe structure in an LTE system, n is equal to 1, 2, or 3 for transmitting Downlink Control information, including a Physical Downlink Control Channel (PDCCH) and other Control information; the remaining OFDM symbols are used to transmit a Physical Downlink Shared Channel (PDSCH). The basic granularity of Resource allocation is a Physical Resource Block (PRB) pair, where one PRB includes 12 consecutive subcarriers in frequency and corresponds to one slot in time. Two PRBs in two slots on the same subcarrier within one subframe are referred to as one PRB pair. Within each PRB pair, each Resource Element (RE) is the smallest unit of time-frequency resources, i.e., one subcarrier in frequency and one OFDM symbol in time. The REs may be used for different functions, for example, a part of the REs may be used for transmitting a Cell-specific Reference Signal (CRS), a user-specific demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), and the like, respectively.
In an LTE system, PDSCH and PUSCH are transmitted by PDCCH or Enhanced Physical Downlink Control Channel (EPDCCH) scheduling, where resources for transmitting PDSCH and PUSCH are also allocated by resource allocation signaling in PDCCH/EPDCCH, the maximum resource allocated for transmitting PDSCH and PUSCH is all PRB pairs within the entire system bandwidth, the minimum resource allocated for transmitting PDSCH and PUSCH is one PRB pair within the entire system bandwidth, and the granularity of resource allocation is one PRB pair.
Sounding Reference Signal (SRS) is used in LTE systems for measuring uplink channel quality. At present, the SRS configuration includes a cell-specific SRS configuration and a UE-specific SRS configuration, where the UE-specific SRS configuration is used to configure UE-specific SRS resources, and the UE-specific SRS configuration is only sent to the configured UE, and the cell-specific SRS configuration is configured for SRS resources shared by all users in a cell, and is sent to all UEs in the cell, that is, for a certain UE, the cell-specific SRS configuration and the UE-specific SRS configuration configured for the UE are received. The UE-specific SRS resource belongs to the cell-specific SRS resource, that is, the subframe in which the UE-specific SRS resource is located is a subset of the subframe in which the cell-specific SRS resource is located. In the SRS resource corresponding to the cell-specific SRS configuration, the SRS resource may only be used for transmitting the SRS, all users in the cell may not transmit other Uplink data and Uplink signals (e.g., Physical Uplink Shared Channel (PUSCH) data and Physical Uplink Control Channel (PUCCH) signals) on the SRS resource, when the resource of the PUSCH transmitted by the UE completely overlaps or partially overlaps with the SRS resource dedicated to the cell, the UE does not transmit Uplink information (e.g., PUSCH/PUCCH data, which is described below by taking PUSCH/PUCCH data as an example) on the last OFDM symbol of the located subframe, and the UE transmits the SRS on the last OFDM symbol of the located subframe, as shown in fig. 3. And the UE transmits the SRS on the subframe where the special SRS resource of the UE is positioned.
The length of each subframe is 1 millisecond in the prior art, for the configuration of a general cyclic prefix, each subframe includes 14 OFDM symbols, when PUSCH/PUCCH data and SRS collide, the UE does not transmit PUSCH/PUCCH in the last OFDM symbol, the UE transmits SRS in the last OFDM symbol, the UE transmits PUSCH/PUCCH data in the first 13 OFDM symbols, and the performance of PUSCH/PUCCH is not greatly affected.
Disclosure of Invention
The application provides a method and equipment for transmitting uplink information and a reference signal, which can improve the transmission performance of the uplink information and/or the reference signal.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a method for transmitting uplink information and reference signals includes:
determining the subframe length of a UE uplink information transmission subframe;
determining the transmission mode of Sounding Reference Signals (SRS) and uplink information in the same subframe according to the subframe length;
and transmitting the SRS and/or the uplink information according to the determined transmission mode.
Preferably, the determining, according to the subframe length, the transmission mode of the SRS and the uplink information in the same subframe includes:
when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, the UE configured with the UE-specific SRS does not transmit the SRS on the uplink information transmission subframe, and the UE for scheduling uplink information transmission transmits the uplink information on the uplink information transmission subframe; and/or the presence of a gas in the gas,
and when the subframe length is greater than the N and the resources for transmitting the uplink information are overlapped with the cell-specific SRS resources, the UE configured with the specific SRS transmits the SRS on the uplink information transmission subframe, the UE scheduled for uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe, and the uplink information is not transmitted on the last OFDM symbol.
Preferably, the determining, according to the subframe length, the transmission mode of the SRS and the uplink information in the same subframe includes:
when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, scheduling uplink information transmission UE not to transmit the uplink information on the uplink information transmission subframe, and transmitting an SRS on N OFDM symbols or the last OFDM symbol of the uplink information transmission subframe by the UE configured with the UE-specific SRS; and/or the presence of a gas in the gas,
and when the subframe length is greater than the N and the resources for transmitting the uplink information are overlapped with the cell-specific SRS resources, the UE configured with the specific SRS transmits the SRS on the PUSCH subframe, and the UE for scheduling uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe.
Preferably, the determining the transmission modes of the sounding reference signal SRS and the uplink information in the same subframe includes:
the UE determines the transmission mode of the SRS and the uplink information according to the received high-level signaling selection mode I or mode II;
wherein, the first mode is as follows: when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, the UE configured with the UE-specific SRS does not transmit the SRS on the uplink information transmission subframe, and the UE for scheduling uplink information transmission transmits the uplink information on the uplink information transmission subframe; and/or when the subframe length is greater than the N, the UE configured with the special SRS transmits the SRS on the uplink information transmission subframe, and the UE scheduled for uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe;
the second method is as follows: when the subframe length is less than or equal to a preset positive integer N and the resources for transmitting the uplink information overlap with the cell-specific SRS resources, transmitting the SRS on N OFDM symbols of the uplink information transmission subframe, or transmitting the SRS on the last OFDM symbol of the uplink information transmission subframe by the UE configured with the UE-specific SRS; and/or when the subframe length is greater than the N, the UE configured with the special SRS transmits the SRS on the PUSCH subframe, and the UE scheduling uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe.
Preferably, the determining the subframe length of the UE uplink information transmission subframe includes: and the UE receives the high-layer signaling or the physical layer signaling and determines the subframe length according to the high-layer signaling or the physical layer signaling.
Preferably, the high-level signaling carries semi-static configuration information of an actual subframe length or a nominal subframe length of the uplink information transmission subframe, and the actual subframe length or the nominal subframe length is used as the subframe length of the uplink information transmission subframe; and/or the presence of a gas in the gas,
when the uplink information is Physical Uplink Shared Channel (PUSCH) data information, receiving the physical layer signaling at a subframe position where DCI (downlink control information) of a scheduling shortened subframe (PUSCH) is possibly sent; and determining the length of a PUSCH subframe according to the transmission position of the physical layer signaling and using the length as the length of the uplink information transmission subframe, or determining the length of the PUSCH subframe according to bit information carried in the physical layer signaling and using the length as the length of the uplink information transmission subframe, or determining the length of the PUSCH subframe according to different Radio Network Temporary Identifiers (RNTIs) scrambled by the physical layer signaling and using the length as the length of the uplink information transmission subframe.
Preferably, the physical layer signaling indicates, in a bit mapping manner: within the determined length range of the subframe, whether the PUSCH resource in a set frequency domain indication unit is scheduled or not is judged; the set frequency domain indication unit is a frequency domain scheduling unit of a PUSCH (physical uplink shared channel) or a frequency domain scheduling unit of M continuous PUSCHs.
A method for transmitting uplink information and reference signals includes:
UE receives a signaling, wherein the signaling indicates whether the UE transmits SRS on a Sounding Reference Signal (SRS) resource special for a cell;
the UE determines the transmission mode of the Sounding Reference Signal (SRS) and the uplink information on the subframe of the uplink information transmission according to the indication of the signaling;
and transmitting the SRS and/or the uplink information according to the determined transmission mode.
Preferably, the signaling is a high layer signaling; the signaling indicating whether the UE transmits the SRS on the cell-specific SRS resource comprises: the high-level signaling indicates a subframe in which the UE does not transmit the SRS on the cell-specific SRS resource and a subframe in which the UE transmits the SRS on the cell-specific SRS resource;
or,
the signaling is physical layer signaling; the signaling indicating whether the UE transmits the SRS on the cell-specific SRS resource comprises: and the physical layer signaling indicates that the scheduled possible transmission shortens uplink information and whether the SRS is transmitted on the SRS resource special for the cell or not on the transmission subframe which comprises the SRS resource special for the cell.
Preferably, the determining the transmission mode of the SRS and the uplink information on the subframe of uplink information transmission includes:
for a scheduled uplink information transmission subframe, if the fact that the SRS is not transmitted on the SRS resource special for the cell is determined according to the signaling, the uplink information is transmitted on all OFDM symbols of the scheduled uplink information transmission subframe; and if the SRS is determined to be transmitted on the SRS resource exclusive to the cell according to the signaling, transmitting the uplink information on other OFDM symbols except the last OFDM symbol of the scheduled uplink information transmission subframe, or not transmitting the uplink information on the scheduled uplink information transmission subframe.
An apparatus for transmitting uplink information and reference signals, comprising: a subframe length determining unit, a transmission mode determining unit and a transmission unit;
the subframe length determining unit is used for determining the subframe length of the UE uplink information transmission subframe;
the transmission mode determining unit is used for determining the transmission modes of the Sounding Reference Signal (SRS) and the uplink information in the same subframe according to the subframe length;
and the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
An apparatus for transmitting uplink information and reference signals, comprising: a signaling receiving unit, a transmission mode determining unit and a transmission unit;
the signaling receiving unit is configured to receive a signaling, where the signaling indicates whether the UE transmits the SRS on a sounding reference signal SRS resource dedicated to the cell;
the transmission mode determining unit is configured to determine, according to the indication of the signaling, a transmission mode of a Sounding Reference Signal (SRS) and uplink information on a subframe in which uplink information is transmitted;
and the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
According to the technical scheme, in the application, the UE determines the transmission modes of the SRS and the uplink information in the same subframe according to the subframe length of the uplink information transmission subframe or the received downlink signaling, and transmits the SRS and/or the uplink information according to the determined transmission modes. By the method, the transmission modes of the SRS and the uplink information can be reasonably determined, and the transmission performance of the uplink information and/or the reference signal is improved.
Drawings
Fig. 1 is a frame structure diagram of a frequency division duplex system;
fig. 2 is a schematic diagram of a subframe structure in an LTE system;
fig. 3 is a schematic transmission diagram when scheduled PUSCH resources and SRS resources overlap in the prior art;
fig. 4 is a schematic diagram illustrating a first method for transmitting uplink information and reference signals according to the present application;
fig. 5 is a first schematic diagram illustrating PUSCH and SRS transmission in a first method according to a first embodiment of the present application;
fig. 6 is a diagram illustrating PUSCH and SRS transmission in a first method according to a first embodiment of the present application;
fig. 7 is a third schematic diagram illustrating PUSCH and SRS transmission in a first method according to a first embodiment of the present application;
FIG. 8 is a diagram illustrating multiplexing subframes of different lengths in a time division manner;
FIG. 9 is a diagram of frequency division multiplexing subframes of different lengths;
fig. 10 is a diagram illustrating that a physical layer signaling carries subframe length indication information;
fig. 11 is a schematic diagram of a time-frequency domain indication unit indicating PUSCH resources by subframe length indication information;
fig. 12 is a schematic diagram of PUSCH and SRS transmission in the second embodiment of the present application;
fig. 13 is a schematic diagram of a basic structure of a first uplink information and reference signal transmission apparatus in the present application;
fig. 14 is a schematic diagram illustrating a second transmission method of uplink information and reference signals in the present application;
fig. 15 is a first schematic diagram illustrating that physical layer signaling carries SRS information whether to transmit or not according to the present application;
fig. 16 is a diagram illustrating a physical layer signaling carrying SRS information whether to transmit or not according to the present application;
fig. 17 is a schematic diagram of a basic structure of a second uplink information and reference signal transmission apparatus in the present application.
Detailed Description
For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.
In order to achieve the purpose of the present application, the present application proposes two methods for transmitting uplink information and reference signals, and as shown in fig. 4, a first method for transmitting uplink information and reference signals includes the following steps:
step 401: and determining the subframe length of the uplink information transmission subframe.
The uplink information may be other signals than the reference signal for uplink transmission, such as PUSCH. The purpose of determining the subframe length here is: it is determined whether uplink information is transmitted on a shortened subframe, and the length of the shortened subframe. A shortened subframe here refers to a subframe having a subframe length of less than 1 millisecond.
Step 402: and determining the transmission modes of the uplink information and the SRS in the same subframe according to the subframe length determined in the step 401.
In this step, when the resource for transmitting the uplink information and the resource for transmitting the SRS have an overlapping portion, the transmission mode of the uplink information and the SRS is determined according to the subframe length of the uplink information transmission subframe.
Step 403: and the UE transmits the SRS and/or the uplink information according to the determined uplink information and the SRS transmission mode.
The method described above with reference to fig. 4 is further explained in detail below by means of three preferred embodiments.
Example one
In this embodiment, two specific methods are given for SRS and/or uplink information transmission. In the present embodiment, a PUSCH is taken as an example for explanation.
The method comprises the following steps:
corresponding to the foregoing step 402, how to determine the transmission schemes of the PUSCH and SRS according to the PUSCH subframe length in the present method is described below.
Specifically, when the subframe length for transmitting PUSCH is less than or equal to N (where N is a positive integer, and a specific value is configured by higher layer signaling or preset by a protocol, for example, N is equal to 7, 4, 2) OFDM symbols, if the resource for transmitting PUSCH overlaps with the configured cell-specific SRS resource within the same subframe (specifically, may overlap with the UE-specific SRS resource configured for itself within the same subframe or overlap with the cell-specific SRS resource configured within the same subframe instead of the UE-specific SRS resource of itself), the UE configured with UE-specific SRS does not transmit SRS on the same subframe, and the UE transmitting PUSCH transmits PUSCH on all OFDM symbols within the subframe. For example, if N is equal to 4, as shown in fig. 5, the UE1 schedules a subframe with a subframe length of 4 OFDM to transmit PUSCH, the number of OFDM symbols of the UE scheduled PUSCH is 4, the subframe is the last 4 OFDM symbols of a 1ms subframe, the subframe is configured with cell-specific SRS transmission, and the configured cell-specific SRS resource overlaps with the PUSCH resource scheduled by the UE1, the UE2 configures UE-specific SRS transmission in the subframe, the UE1 transmits PUSCH on the 4 OFDM symbols, and the UE2 does not transmit SRS on the UE-specific SRS transmission resource configured in the subframe. If the resources for transmitting the PUSCH do not overlap with the configured cell-specific SRS resources in the same subframe, the UE configured with the UE-specific SRS transmits the SRS on the same subframe, and the UE transmitting the PUSCH transmits the PUSCH on all OFDM symbols in the subframe, where the processing is the same as that in the conventional manner. For example, if N is equal to 4, as shown in fig. 6, the UE1 schedules a subframe with a subframe length of 4 OFDM to transmit PUSCH, the number of OFDM symbols of the UE scheduled PUSCH is 4, the subframe is the last 4 OFDM symbols of a 1ms subframe, the subframe is configured with cell-specific SRS transmission, and the configured cell-specific SRS resource does not overlap with the PUSCH resource scheduled by the UE1, the UE2 configures UE-specific SRS transmission in the subframe, the UE1 transmits PUSCH on the 4 OFDM symbols, and the UE2 transmits SRS on the UE-specific SRS transmission resource configured in the subframe.
When the length of the subframe for transmitting the PUSCH is greater than N (where N is a positive integer, and a specific value is configured by higher layer signaling or preset by a protocol, for example, N is equal to 7, 4, 2) OFDM symbols, if the resource for transmitting the PUSCH overlaps with the configured cell-specific SRS resource within the same subframe, the UE configured with the UE-specific SRS transmits the SRS in the same subframe, while the UE transmitting the PUSCH transmits the PUSCH on all the remaining OFDM symbols except for the last OFDM symbol within the subframe, and the UE transmitting the PUSCH does not transmit the PUSCH on the last OFDM symbol within the subframe. For example, if N is equal to 4, as shown in fig. 7, the UE1 schedules a subframe with a subframe length of 7 OFDM to transmit PUSCH, the subframe is the last 7 OFDM symbols of a 1-millisecond subframe, the subframe is configured with cell-specific SRS transmission, the number of OFDM symbols of UE-scheduled PUSCH is equal to 7 and is greater than N, and the configured cell-specific SRS resource overlaps with the PUSCH resource scheduled by the UE1, the UE2 configures UE-specific SRS transmission in the subframe, the UE1 transmits PUSCH on the first 6 OFDM symbols of the 7 OFDM symbols, and the UE2 transmits on the UE-specific SRS transmission resource configured in the subframe.
Next, corresponding to step 401, given a specific way for the UE to determine the subframe length of the uplink information transmission subframe, there may be the following methods.
The subframe length determination method comprises the following steps:
the subframe length may be an actual subframe length configured by a high layer signaling in a semi-static manner, and the UE determines the PUSCH subframe length scheduled by the subframe in which the UE is located by receiving the high layer signaling. Specifically, the length of the subframe in a part of the time period is t 1ms, and the length of the subframe in a part of the time period is t2 ms, and the length UE of these subframes is known by receiving high layer signaling, for example, in a 10ms period, a 0ms to 3 ms period, a 1ms subframe length, a 4 ms to 7 ms period, a 0.5 ms subframe length, and an 8 ms to 9 ms period, a subframe length is 1ms, as shown in fig. 8. Alternatively, the subframe lengths of different PUSCH subframes may be multiplexed in a frequency division manner, that is, the length of a subframe in a part of frequency bands is t 1ms, and the length of a subframe in a part of frequency bands is t2 ms, and the length UE of these subframes is known by receiving a high layer signaling, for example, the length of a subframe in a subband one frequency band is 1ms, and the length of a subframe in a subband two frequency band is 0.5 ms, as shown in fig. 9. After knowing the length of the subframe, the UE can determine the SRS and PUSCH transmission methods according to the subframe length as described above.
And a second subframe length notification method:
the UE may determine the length of PUSCH transmission within a subframe by receiving physical layer signaling, and then determine the SRS and PUSCH transmission methods according to the subframe length for scheduling PUSCH as described above.
The physical layer signaling may be common signaling or UE-specific signaling. The UE is informed of the scheduling of PUSCH by these physical layer signaling to shorten the subframe (where the shortened subframe refers to a subframe with a length of less than 1ms, for example, a subframe with a length of N OFDM symbols, where N is equal to 7, 4, 2), and then the UE determines whether to transmit SRS in the current subframe according to the scheduling subframe length of PUSCH.
Specifically, a physical layer signaling may be simultaneously sent at a subframe position where DCI (utilizing PDCCH/EPDCCH) scheduling a shortened subframe PUSCH is sent, to indicate a scheduling condition of the PUSCH on the shortened subframe, and the physical layer signaling a may carry subframe length indication information, as shown in fig. 10, the physical layer signaling may be transmitted in a PDCCH/EPDCCH format, where the physical layer signaling may be UE-specific signaling or may be common signaling.
The content of the specific subframe length indication information can indicate the resource scheduling condition of the PUSCH in a bit mapping (bitmap) manner. When determining the PUSCH subframe length according to physical layer signaling a, there may be three ways: 1. determining the scheduling condition of the PUSCH with which subframe length is indicated according to the characteristics of the subframe length indication information in the physical layer signaling A, namely the length of the corresponding PUSCH subframe; for example, according to the subframe position of the transmitted subframe length indication information, since the subframe length indication information is transmitted simultaneously with the DCI scheduling the shortened subframe PUSCH, the subframe length indication information indicates the scheduling condition of the PUSCH scheduling the shortened subframe PUSCH, for example, the PDCCH schedules the PUSCH with the subframe length of 0.5 ms, and the simultaneously transmitted subframe length indication information indicates the scheduling condition of the PUSCH with the subframe length of 0.5 ms. 2. The PUSCH subframe length may be determined by bit information carried in the physical layer signaling a, e.g., with 2 bits in the physical layer signaling indicating that the PUSCH subframe length is 14, 7, 4, or 2 OFDM symbols. 3. The corresponding PUSCH subframe length may also be indicated by a Radio Network Temporary Identity (RNTI) scrambled to the PDCCH/EPDCCH transmitting the physical layer signaling a, for example, if the RNTI scrambled to the PDCCH/EPDCCH transmitting the physical layer signaling a is RNTI-1, the indicated subframe length is t 1ms, if the RNTI scrambled to the PDCCH/EPDCCH transmitting the physical layer signaling a is RNTI-2, the indicated subframe length is t2 ms, and mapping between the RNTI and the subframe length may be configured by higher layer signaling.
As described above, the subframe length indication information content itself may be indicated by using a bit mapping method for indicating the PUSCH resource scheduling condition. Specifically, the subframe length indication information is used to indicate whether PUSCH resources in a set frequency domain indication unit are scheduled within a determined PUSCH subframe length range, where the set frequency domain indication unit may be a frequency domain scheduling unit of a PUSCH or M consecutive frequency domain scheduling units of a PUSCH, for example, if the determined PUSCH subframe length is 2 OFDM symbols, the subframe length indication information indicates that: in 2 OFDM symbols in the time domain, the frequency domain of one PRB pair is used as a unit in the frequency domain, or M (M is a positive integer, determined by higher layer signaling or by a protocol, M may also be a PRB included in the entire system bandwidth, that is, the entire system bandwidth is used as an indication unit) frequency domain ranges of M consecutive PRB pairs in the frequency domain are used as a unit, and whether the PUSCH resource in the time-frequency domain is scheduled is shown in fig. 11. For each indication unit of the time-frequency domain, 1-bit subframe length indication information is used for indicating the scheduling condition of the PUSCH, the value of the subframe length indication information is '0', the PUSCH scheduling can be indicated to be absent, and the value of the subframe length indication information is '1', the PUSCH scheduling can be indicated to be present.
The second method comprises the following steps:
in the method, when the subframe length of the PUSCH subframe is determined, the nominal subframe length configured in a semi-static state by a high-level signaling is used as the determined subframe length. And the UE determines the nominal PUSCH subframe length on the subframe by receiving the high-layer signaling, and takes the nominal PUSCH subframe length as the PUSCH subframe length. The nominal subframe length referred to herein may or may not be the subframe length of the actually scheduled PUSCH. For example, the nominal subframe length of the higher layer signaling configuration subband one is 1ms, the actually scheduled PUSCH may be a 1ms subframe or a 0.5 ms subframe, the nominal subframe length of the higher layer signaling configuration subband two is 0.5 ms, and the actually scheduled PUSCH may be a 1ms subframe or a 0.5 ms subframe.
The UE determines the SRS and PUSCH transmission methods according to the nominal subframe length in the manner described in method one above.
The method is suitable for the scene that the length of the sub-frame is not changed under most conditions and is occasionally changed due to special conditions.
Example two
In this embodiment, the PUSCH is still used as an example for explanation.
Corresponding to the foregoing step 402, how to determine the transmission schemes of the PUSCH and SRS according to the PUSCH subframe length in the present method is described below.
Specifically, when the length of the subframe for transmitting PUSCH is less than or equal to N (where N is a positive integer, and the specific value is configured by higher layer signaling or preset by a protocol, for example, N is equal to 7, 4, 2) OFDM symbols, if the resource for transmitting PUSCH overlaps with the configured cell-specific SRS resource within the same subframe, for a UE configured with a specific SRS, the SRS may be transmitted on N OFDM symbols within the subframe, or the UE transmits the SRS on the last OFDM symbol within the subframe, and for a UE scheduling PUSCH, PUSCH is not transmitted within the PUSCH subframe. For example, if the higher layer signaling configuration N is equal to 2, the subframe is configured with cell-specific SRS transmission, and the UE1 is configured with UE-specific SRS transmission in the subframe, as shown in fig. 12, then the UE1 transmits SRS on UE-specific SRS transmission resources on N OFDM symbols of the subframe configuration. In the subframe, the PUSCH partially or completely overlapping with the SRS is not transmitted. In the case of transmitting the SRS over N OFDM symbols, a plurality of UEs may share the N OFDM symbols for SRS transmission.
When the length of the subframe for transmitting the PUSCH is greater than N (where N is a positive integer, and a specific value is configured by higher layer signaling or preset by a protocol, for example, N is equal to 7, 4, or 2) OFDM symbols, if the resource for transmitting the PUSCH overlaps with the configured cell-specific SRS resource in the same subframe, the UE configured with the UE-specific SRS transmits the SRS in the same subframe, and the UE transmitting the PUSCH transmits the PUSCH on all the remaining OFDM symbols except for the last OFDM symbol in the subframe, and the UE transmitting the PUSCH does not transmit the PUSCH on the last OFDM symbol in the subframe, where the processing manner is the same as that in the conventional manner. For example, if N is equal to 4, as shown in fig. 7, the UE1 schedules a subframe with a subframe length of 7 OFDM to transmit PUSCH, the subframe is the last 7 OFDM symbols of a 1-millisecond subframe, the subframe is configured with cell-specific SRS transmission, the number of UE-scheduled PUSCH OFDM symbols is equal to 7 and is greater than 4, and the configured cell-specific SRS resource overlaps with the PUSCH resource scheduled by the UE1, the UE2 configures UE-specific SRS transmission in the subframe, the UE1 transmits PUSCH on the first 6 OFDM symbols of the 7 OFDM symbols, and the UE2 transmits on the UE-specific SRS transmission resource configured in the subframe.
Compared with the mode of the first embodiment, the method of the present embodiment can ensure that the SRS can be transmitted when the length of the subframe for transmitting the PUSCH is less than or equal to N.
EXAMPLE III
In this embodiment, with reference to the manners of the first and second embodiments, the SRS and uplink information transmission manner is determined by using a higher layer signaling. Taking PUSCH as an example of uplink information, specifically, the UE determines the mode of SRS and PUSCH transmission by the UE by receiving the higher layer signaling, that is, if the higher layer signaling configures the mode 1 for transmitting SRS and PUSCH for the UE, the UE adopts the method for transmitting SRS and PUSCH of the first embodiment, and if the higher layer signaling configures the mode 2 for transmitting SRS and PUSCH for the UE, the UE adopts the method for transmitting SRS and PUSCH of the second embodiment.
The foregoing is a first method for transmitting uplink information and reference signals in the present application. The application also provides a device for transmitting the uplink information and the reference signal, which can be used for implementing the method. Fig. 13 is a schematic diagram of a basic structure of the device, where the device may be located in a UE, and specifically includes: the device comprises a subframe length determining unit, a transmission mode determining unit and a transmission unit.
The subframe length determining unit is used for determining the subframe length of the UE uplink information transmission subframe. And the transmission mode determining unit is used for determining the transmission modes of the SRS and the uplink information in the same subframe according to the subframe length. And the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
A second method for transmitting uplink information and reference signals in the present application is described below, and as shown in fig. 14, the method includes:
step 1401: the UE receives signaling indicating whether the UE transmits the SRS on the SRS resource exclusive to each UE.
Step 1402: and the UE determines the SRS and the transmission mode of the uplink information on the subframe of the uplink information transmission according to the indication of the signaling.
Step 1403: and transmitting the SRS and/or the uplink information according to the determined transmission mode.
Therefore, in the method, the transmission mode of the SRS and the uplink information is determined by using the signaling. The specific determination method may have the following three types, wherein the PUSCH is still taken as the uplink information for example:
the method comprises the following steps:
and the UE determines on which subframes the UE does not transmit the SRS on the special SRS resource of the cell by receiving the high-level signaling, and on which subframes the UE transmits the SRS on the special SRS resource of the cell. If the UE receives high layer signaling indicating that the UE does not transmit SRS on the cell-specific SRS resources, the scheduled PUSCH is transmitted on all OFDM symbols of the subframe. If the UE receives the high layer signaling indicating that the UE transmits the SRS on the SRS resource exclusive to the cell, the scheduled PUSCH is transmitted on the remaining OFDM symbols of the subframe except the last OFDM symbol, or the scheduled PUSCH is not transmitted on the subframe.
The second method comprises the following steps:
and the UE determines whether the UE transmits the SRS on the special SRS resource of the cell on the scheduled subframe which can possibly transmit the PUSCH and comprises the special SRS resource of the cell or not by receiving the physical layer signaling. If the UE receives physical layer signaling indicating that the UE transmits the SRS over the cell-specific SRS resources, the scheduled PUSCH is transmitted on the remaining OFDM symbols of the subframe except the last OFDM symbol, or the scheduled PUSCH is not transmitted on the subframe.
The physical layer signaling may be UE-specific signaling or common signaling. When the physical layer signaling is common signaling, all the UEs are informed through the common signaling whether SRS is transmitted on the special SRS resource of the cell or not on the subframe which possibly transmits the shortened PUSCH and comprises the special SRS resource of the cell. The subframe includes a subframe where the cell occupies the SRS resource, that is, a subframe including the last OFDM symbol of the 1ms subframe, where the subframe may be a 1ms subframe or a shortened subframe. The position for transmitting the common signaling may be a starting position of the 1ms scheduled subframe, indicating whether the SRS in the last OFDM symbol in the 1ms subframe of the corresponding scheduled PUSCH is transmitted, as shown in fig. 15, or other positions in the 1ms scheduled subframe, which are positions where the shortened subframe PUSCH transmission may be scheduled, for example, the position for transmitting the common signaling is position of 0.5 ms, indicating whether the SRS in the last OFDM symbol in the 1ms subframe of the scheduled shortened PUSCH subframe is transmitted, as shown in fig. 16.
Whether the SRS is transmitted or not is indicated by 1-bit SRS transmission indication information, the SRS transmission indication information value is '0' to indicate that the SRS is not transmitted, and the SRS transmission indication information value is '1' to indicate that the SRS is not transmitted.
By applying the method, whether the SRS or the shortened PUSCH is transmitted can be more flexibly determined.
The foregoing is a second method for transmitting uplink information and reference signals in the present application. The application also provides a device for transmitting the uplink information and the reference signal, which can be used for implementing the method. Fig. 17 is a schematic diagram of a basic structure of the device, where the device may be located in a UE, and specifically includes: a signaling receiving unit, a transmission mode determining unit and a transmission unit.
The signaling receiving unit is configured to receive a signaling, where the signaling indicates whether the UE transmits the SRS on the SRS resource dedicated to the cell. And a transmission mode determining unit, configured to determine, according to the indication of the signaling, a transmission mode of the SRS and the uplink information on the subframe where the uplink information is transmitted. And the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (12)

1. A method for transmitting uplink information and a reference signal, comprising:
determining the subframe length of an uplink information transmission subframe of User Equipment (UE);
determining the transmission mode of Sounding Reference Signals (SRS) and uplink information in the same subframe according to the subframe length;
and transmitting the SRS and/or the uplink information according to the determined transmission mode.
2. The method of claim 1, wherein the determining the transmission mode of the SRS and the uplink information in the same subframe according to the subframe length comprises:
when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, the UE configured with the UE-specific SRS does not transmit the SRS on the uplink information transmission subframe, and the UE for scheduling uplink information transmission transmits the uplink information on the uplink information transmission subframe; and/or the presence of a gas in the gas,
and when the subframe length is greater than the N and the resources for transmitting the uplink information are overlapped with the cell-specific SRS resources, the UE configured with the specific SRS transmits the SRS on the uplink information transmission subframe, the UE scheduling uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe, and the uplink information is not transmitted on the last OFDM symbol.
3. The method of claim 1, wherein the determining the transmission mode of the SRS and the uplink information in the same subframe according to the subframe length comprises:
when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, scheduling uplink information transmission UE not to transmit the uplink information on the uplink information transmission subframe, and transmitting an SRS on N OFDM symbols or the last OFDM symbol of the uplink information transmission subframe by the UE configured with the UE-specific SRS; and/or the presence of a gas in the gas,
and when the subframe length is greater than the N and the resources for transmitting the uplink information are overlapped with the cell-specific SRS resources, the UE configured with the specific SRS transmits the SRS on the PUSCH subframe, and the UE for scheduling uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe.
4. The method of claim 1, wherein determining the transmission modes of the SRS and the uplink information in the same subframe comprises:
the UE determines the transmission mode of the SRS and the uplink information according to the received high-level signaling selection mode I or mode II;
wherein, the first mode is as follows: when the subframe length is smaller than or equal to a preset positive integer N and the resource used for transmitting the uplink information is overlapped with the cell-specific SRS resource, the UE configured with the UE-specific SRS does not transmit the SRS on the uplink information transmission subframe, and the UE for scheduling uplink information transmission transmits the uplink information on the uplink information transmission subframe; and/or when the subframe length is greater than the N, the UE configured with the special SRS transmits the SRS on the uplink information transmission subframe, and the UE scheduled for uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe;
the second method is as follows: when the subframe length is less than or equal to a preset positive integer N and the resources for transmitting the uplink information overlap with the cell-specific SRS resources, transmitting the SRS on N OFDM symbols of the uplink information transmission subframe, or transmitting the SRS on the last OFDM symbol of the uplink information transmission subframe by the UE configured with the UE-specific SRS; and/or when the subframe length is greater than the N, the UE configured with the special SRS transmits the SRS on the uplink information transmission subframe, and the UE scheduled for uplink information transmission transmits the uplink information on other OFDM symbols except the last OFDM symbol on the uplink information transmission subframe.
5. The method according to any of claims 1 to 4, wherein the determining the subframe length of the UE uplink information transmission subframe comprises: and the UE receives the high-layer signaling or the physical layer signaling and determines the subframe length according to the high-layer signaling or the physical layer signaling.
6. The method according to claim 5, wherein the high layer signaling carries semi-static configuration information of an actual subframe length or a nominal subframe length of the uplink information transmission subframe, and the actual subframe length or the nominal subframe length is used as the subframe length of the uplink information transmission subframe; and/or the presence of a gas in the gas,
when the uplink information is Physical Uplink Shared Channel (PUSCH) data information, receiving the physical layer signaling at a subframe position where DCI (downlink control information) of a scheduling shortened subframe (PUSCH) is possibly sent; and determining the length of a PUSCH subframe according to the transmission position of the physical layer signaling and using the length as the length of the uplink information transmission subframe, or determining the length of the PUSCH subframe according to bit information carried in the physical layer signaling and using the length as the length of the uplink information transmission subframe, or determining the length of the PUSCH subframe according to different Radio Network Temporary Identifiers (RNTIs) scrambled by the physical layer signaling and using the length as the length of the uplink information transmission subframe.
7. The method of claim 6, characterized in that the method comprises: the physical layer signaling indicates in a bit mapping manner: within the determined length range of the subframe, whether the PUSCH resource in a set frequency domain indication unit is scheduled or not is judged; the set frequency domain indication unit is a frequency domain scheduling unit of a PUSCH (physical uplink shared channel) or a frequency domain scheduling unit of M continuous PUSCHs.
8. A method for transmitting uplink information and a reference signal, comprising:
UE receives a signaling, wherein the signaling indicates whether the UE transmits SRS on a Sounding Reference Signal (SRS) resource special for a cell;
the UE determines the transmission mode of the SRS and the uplink information on the subframe of the uplink information transmission according to the indication of the signaling;
and transmitting the SRS and/or the uplink information according to the determined transmission mode.
9. The method of claim 8, wherein the signaling is higher layer signaling; the signaling indicating whether the UE transmits the SRS on the cell-specific SRS resource comprises: the high-level signaling indicates a subframe in which the UE does not transmit the SRS on the cell-specific SRS resource and a subframe in which the UE transmits the SRS on the cell-specific SRS resource;
or,
the signaling is physical layer signaling; the signaling indicating whether the UE transmits the SRS on the cell-specific SRS resource comprises: and the physical layer signaling indicates that the scheduled possible transmission shortens uplink information and whether the SRS is transmitted on the SRS resource special for the cell or not on the transmission subframe which comprises the SRS resource special for the cell.
10. The method according to claim 8 or 9, wherein the determining the transmission mode of the SRS and the uplink information on the subframe of the uplink information transmission comprises:
for a scheduled uplink information transmission subframe, if the fact that the SRS is not transmitted on the SRS resource special for the cell is determined according to the signaling, the uplink information is transmitted on all OFDM symbols of the scheduled uplink information transmission subframe; and if the SRS is determined to be transmitted on the SRS resource exclusive to the cell according to the signaling, transmitting the uplink information on other OFDM symbols except the last OFDM symbol of the scheduled uplink information transmission subframe, or not transmitting the uplink information on the scheduled uplink information transmission subframe.
11. An apparatus for transmitting uplink information and reference signals, comprising: a subframe length determining unit, a transmission mode determining unit and a transmission unit;
the subframe length determining unit is used for determining the subframe length of the UE uplink information transmission subframe;
the transmission mode determining unit is used for determining the transmission modes of the Sounding Reference Signal (SRS) and the uplink information in the same subframe according to the subframe length;
and the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
12. An apparatus for transmitting uplink information and reference signals, comprising: a signaling receiving unit, a transmission mode determining unit and a transmission unit;
the signaling receiving unit is configured to receive a signaling, where the signaling indicates whether the UE transmits the SRS on a sounding reference signal SRS resource dedicated to the cell;
the transmission mode determining unit is used for determining the transmission modes of the SRS and the uplink information on the subframe of the uplink information transmission according to the indication of the signaling;
and the transmission unit is used for transmitting the SRS and/or the uplink information according to the determined transmission mode.
CN201610814870.1A 2016-09-09 2016-09-09 A kind of transmission method and equipment of uplink information and detection reference signal Pending CN107809305A (en)

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Application publication date: 20180316