WO2017133709A1 - Resource configuring method, network element, uplink dmrs transmission method and device, and storage medium - Google Patents

Abstract

Disclosed in the embodiment of the present invention are a configuring method of an uplink demodulation reference signal, a network side network element, an uplink DMRS transmission method and device, and a storage medium. The method of configuring the uplink demodulation reference signal comprises: the network side configures a time-frequency resource or a parameter set required by a user terminal for configuring and sending the uplink DMRS and notifies the user terminal of the configured time-frequency resource or the parameter set; or the time-frequency resource or the parameter set required by the user terminal for sending the uplink DMRS is pre-defined between the network side and the user terminal. The time-frequency resource or the parameter set comprises a time domain location, a frequency domain location, a virtual cell ID set, a user-specific or resource-specific parameter for determining a group number for an uplink DMRS sequence, and a user-specific or resource-specific parameter for determining a shift pattern of the uplink DMRS sequence.

Description

Resource configuration method, network element, uplink DMRS transmission method and device, and storage medium Technical field

The present invention relates to a mobile communication technology, and in particular, to a resource configuration method, a network side network element, a transmission demodulation reference signal (DMRS), a transmission method and apparatus, and a storage medium.

Background technique

The uplink physical channel of the LTE (Long Term Evolution) system includes a physical random access channel (PRACH), a physical uplink shared channel (PUSCH), and a physical uplink control channel (PUCCH, Physical). Uplink Control Channel). The uplink scheduling information (Uplink Scheduling Information) of the PUSCH is transmitted by the network side to the target UE through a Physical Downlink Control Channel (PDCCH). The uplink scheduling information includes: resource allocation related to the physical uplink shared channel, modulation and coding scheme, and cyclic shift (Cyclic Shift) of the DMRS.

The physical uplink shared channel in the LTE system is transmitted using a single antenna port. A system frame contains 10 subframes, each of which contains 2 slots. 1 is a schematic diagram of a conventional cyclic prefix in one slot according to the related art. As shown in FIG. 1, for a normal cyclic prefix (Normal CP, Normal Cyclic Prefix), each slot is composed of 6 data symbols and 1 solution. The reference signal is composed of. 2 is a schematic diagram of an extended cyclic prefix in a slot according to the related art. For an extended cyclic prefix (Extended Cyclic Prefix), each slot is composed of 5 data symbols and 1 demodulation reference signal.

The demodulation reference signal DM RS consists of a sequence in the frequency domain which is a cyclic shift of the reference signal sequence. In order to randomize inter-cell interference, the reference signal sequence of the demodulation reference signal According to the network side configuration, a slot-based sequence hopping or a group hopping can be implemented. This mode is also called a SGH mode of slot hopping. That is, according to the network side configuration, a demodulation reference signal of a user equipment on two time slots in one subframe is different, and varies with a time slot in a system frame according to a certain jump pattern.

In the time slot n _s , the cyclic shift amount α of the demodulation reference signal is: α=2πn _cs /12, where

Within a radio frame, n _s =0, 1, ..., 19;

Configured by high-level parameters,

Configured by the uplink scheduling information. n _PRS( n _s ) is generated by a pseudo-random generator and is a parameter that varies with the time slot n _s and is specifically expressed as

The pseudo-random sequence generator is initialized once per radio frame, and the initial condition is

The initialization value is related to the cell ID to which it belongs, and is a cell-specific parameter.

The uplink scheduling information is carried by the network side to the target user equipment in a certain downlink control information format (DCI format, Downlink Control Information format). In the LTE system, the downlink control information format is divided into the following types: DCI format 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 3, 3A, etc., wherein DCI format 0 includes uplink scheduling information, and is used for Indicates the scheduling of the physical uplink shared channel PUSCH.

The LTE-Advanced system (referred to as LTE-A system for short) is a next-generation evolution system of the LTE system. In the LTE-A system, when the physical uplink shared channel is transmitted by using multiple antenna ports, the DMRS of each layer of data is precoded in the same manner as the data of each layer. Demodulation reference signals for different layer data, including demodulation reference signals for multi-layer data of the same user equipment for single-user multiple input multiple output system (SU-MIMO), and multi-user multiple input multiple output system (MU-MIMO) Demodulation reference signals of multi-layer data of a plurality of user equipments are orthogonalized by using different demodulation reference signal cyclic shift (CS) and/or orthogonal mask (OCC) to distinguish users Different layer data of spatial multiplexing or distinguishing different users. Where the orthogonal mask OCC is [+1, +1] and [+1, -1], which act on demodulation reference signals on two slots (Slots) within one subframe. For MU paired users with unequal bandwidth, only OCC can be used to orthogonalize different users. Therefore, the maximum number of supported MU pairs can only be 2. This obviously does not meet the growing business needs.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides a method for configuring an uplink demodulation reference signal (DMRS), a network side network element, an uplink DMRS transmission method and apparatus, and a storage medium.

The technical solution of the present invention is implemented as follows:

A resource configuration method, including:

The network side configures a time-frequency resource or a parameter set required for sending the uplink DMRS for the user terminal, and notifies the user terminal of the configured time-frequency resource or parameter set; or the user is predefined between the network side and the user terminal. The time-frequency resource or parameter set required by the terminal to send the uplink DMRS, where the time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

In the embodiment of the present invention, the frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the method further includes: the network side notifying the user terminal of the following information:

The time domain extension of the DMRS on the two time domain symbols in each subframe is performed using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1].

In the embodiment of the present invention, the method further includes: the network side notifying the user terminal of the following information:

The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC.

In the embodiment of the present invention, the 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1,-1,-1], [+1,-1,-1,+1]; or [+1,+1,+1,+1], [+1,-1,+1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+ 1,-1,+1,-1], [-1,-1,+1,+1], [+1,-1,-1,+1].

In the embodiment of the present invention, the virtual cell ID set includes one or more virtual cell IDs. When multiple virtual cell IDs are included, DMRS sequences on different bandwidths are generated according to the multiple virtual cell IDs.

In the embodiment of the present invention, the method further includes:

The network side configures a virtual cell ID for the uplink DMRS of the user terminal when the bandwidth of the uplink MU pairing is the same as that of the other user terminals.

The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.

In the embodiment of the present invention, the network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values At the same time, DMRS sequences on different bandwidths will be generated based on the multiple values.

A method for transmitting an uplink demodulation reference signal includes:

The user terminal receives the time-frequency resource or the parameter set required to send the uplink DMRS configured by the network, generates an uplink DMRS sequence, and transmits the uplink DMRS sequence, where the time-frequency resource or the parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol of each time slot of the subframe; or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain position is the second time domain of each time slot of the subframe The symbol and the sixth time domain symbol; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

In the embodiment of the present invention, the frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the method further includes: the user terminal receiving the following information:

The DMRS on the two time domain symbols in each subframe is time-domain extended using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1].

In the embodiment of the present invention, the method further includes: the user terminal receiving the following information:

The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC.

In the embodiment of the present invention, the 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1,-1,-1], [+1,-1,-1,+1]; or [+1,+1,+1,+1], [+1,-1,+1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+ 1,-1,+1,-1], [-1,-1,+1,+1], [+1,-1,-1,+1].

In the embodiment of the present invention, the virtual cell ID set includes one or more virtual cell IDs. When multiple virtual cell IDs are included, DMRS sequences on different bandwidths are generated according to the multiple virtual cell IDs.

In the embodiment of the present invention, the method further includes:

The network side configures a virtual cell ID for the uplink DMRS of the user terminal when the bandwidth of the uplink MU pairing is the same as that of the other user terminals.

The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.

In the embodiment of the present invention, the network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

In the embodiment of the present invention, the generating an uplink DMRS sequence includes:

The user terminal receives the virtual cell ID configured on the network side, and generates an uplink DMRS sequence based on the virtual cell ID.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values At the same time, DMRS sequences on different bandwidths will be generated based on the multiple values.

A network side network element, where the network side network element includes: a determining unit and a notification unit; wherein:

a determining unit, configured to determine a time-frequency resource or a parameter set required for the user terminal to send the uplink DMRS, or configured to pre-define with the user terminal a time-frequency resource or a parameter set required for the user terminal to send the uplink DMRS;

a notification unit, configured to notify the user terminal of the configured time-frequency resource or parameter set;

The time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number, and used to determine the uplink DMRS sequence shift pattern User-specific or resource-specific parameters.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

In the embodiment of the present invention, the time domain location includes: the frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the notification unit further notifies the user terminal of the following information:

Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1 , +1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1 ], [+1, -1, +1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

A transmission apparatus for uplink demodulation reference signals, the apparatus comprising: a receiving unit, a generating unit, and a transmitting unit, wherein:

The receiving unit is configured to receive a time-frequency resource or a parameter set required for sending the uplink DMRS configured by the network side;

Generating unit configured to generate an uplink DMRS sequence;

a transmission unit, configured to transmit the generated uplink DMRS sequence, where the time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

In the embodiment of the present invention, the frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd number of subcarriers. An odd subcarrier position, or an even subcarrier position in an odd numbered subcarrier, or an odd subcarrier position in an even numbered subcarrier, or an even subcarrier position in an even subcarrier;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the receiving unit is further configured to receive the following information:

Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+ 1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1, + 1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

In the embodiment of the present invention, the receiving unit is further configured to receive a virtual cell ID configured on the network side;

Correspondingly, the generating unit is further configured to generate an uplink DMRS sequence based on the virtual cell ID.

A storage medium storing a computer program configured to perform a resource allocation method of the uplink demodulation reference signal.

A storage medium storing a computer program configured to perform the method of transmitting the uplink demodulation reference signal.

In the technical solution of the embodiment of the present invention, the network side configures, for the user terminal, a time-frequency resource or a parameter set required for sending the uplink demodulation reference signal DMRS, and notifies the user terminal of the configured time-frequency resource or parameter set; or The time-frequency resource or parameter set required by the user terminal to send the uplink DMRS is predefined between the network side and the user terminal, where the time-frequency resource or parameter set includes: Domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number, user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern . After receiving the uplink DMRS configuration parameters on the network side, the user terminal generates an uplink DMRS sequence and transmits the uplink DMRS sequence to the network side. The technical solution of the embodiment of the present invention is adapted to the scenario in which the uplink multi-user MU is paired, and in particular, when there are many uplink users, the uplink DMRS sequence configured by the user terminal in the embodiment of the present invention is not caused by multiplexing the DMRS. The user's uplink DMRS resources are in short supply, so that the requirements of multi-user communication with the network side can be satisfied, and the communication access efficiency is improved.

DRAWINGS

1 is a schematic diagram of a conventional cyclic prefix in one slot according to the related art;

2 is a schematic diagram of an extended cyclic prefix in one slot according to the related art;

3 is a flowchart of a resource configuration method of an uplink demodulation reference signal according to an embodiment of the present invention;

4 is a flowchart of a method for transmitting an uplink demodulation reference signal according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 1 of the present invention;

FIG. 6 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 2 of the present invention;

FIG. 7 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 3 of the present invention;

8 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 4 of the present invention;

9 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 4 of the present invention;

10 is a schematic diagram of time-frequency resources required for transmitting an uplink DMRS according to Embodiment 4 of the present invention;

FIG. 11 is a schematic structural diagram of a network side network element according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a transmission apparatus of an uplink demodulation reference signal according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the standard version developed by 3GPP, the LTE standard version is Release 8 and Release 9 and the LTE-A standard is Release 10 (Release 10), respectively abbreviated as Rel-8. , Rel-9 and Rel-10, the LTE-A standard may also include subsequent versions, such as Rel-11/12/13/14. In the current Rel-10 version, the network side may indicate the cyclic shift/OCC information of the demodulation reference signal for the scheduled PUSCH through DCI format 0 and DCI format 4, as shown in Table 1.

Table 1

Table 1 shows the cyclic shift region of the uplink related DCI format.

And the [w ^(λ) (0) w ^(λ ) (1)] mapping table, when the orthogonality mask OCC is used to orthogonalize the demodulation reference signal, the network side needs to be on two time slots in one subframe. The demodulation reference signal is jointly detected, thus requiring a user equipment to have the same demodulation reference signal on two time slots in one subframe.

In this case, the SGH method of slot jump in the LTE system cannot be used. But in order to be as The inter-cell interference is proposed, and the SGH method of sub-frame jump is proposed in the related art. That is, according to the network side configuration, the demodulation reference signals of one user equipment on two time slots in one subframe are the same, and the demodulation reference signals on each subframe in a system frame are different, according to a certain The jump pattern changes with the sub-frame within a system frame.

In the future LTE-A Release 14 (LTE-A Release 14) study, in the scenario of configuring MIMO (Full Dimension-MIMO, FD-MIMO for short) or MIMO (Massive-MIMO) for a large number of antennas, With more and more users, the demand for uplink MU pairing will further increase, especially for MU pairing users with unequal bandwidth. Therefore, how to further enhance the multiplexing function of the uplink DMRS is an urgent problem to be solved.

FIG. 3 is a flowchart of a method for configuring a resource for an uplink demodulation reference signal according to an embodiment of the present invention. As shown in FIG. 1 , a resource configuration method for an uplink demodulation reference signal in this example includes the following steps:

Step 301: The network side configures, for the user equipment, a time-frequency resource or a parameter set required for sending the uplink DMRS.

Step 302: Notify the user terminal of the configured time-frequency resource or parameter set.

It should be noted that, as an implementation manner, the technical solution of the embodiment of the present invention may also be: pre-agreed between the network side and the user terminal to configure a time-frequency resource or a parameter set required for the user terminal to send an uplink DMRS, and The configuration mode and configuration resource information agreed in advance are configured in advance in the user terminal.

In the embodiment of the present invention, the time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

As an implementation manner, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, The time domain location is the third time domain symbol of each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the network side also notifies the user terminal of the following information:

The time domain extension of the DMRS on the two time domain symbols in each subframe is performed using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1].

In the embodiment of the present invention, the network side also notifies the user terminal of the following information:

The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC. The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, - 1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1 , +1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

In the embodiment of the present invention, the virtual cell ID set includes one or more virtual cells. ID, when multiple virtual cell IDs are included, DMRS sequences on different bandwidths will be generated according to the multiple virtual cell IDs.

In the embodiment of the present invention, the network side configures one or more virtual cell IDs for the uplink DMRS of the user terminal, and specifically includes:

The network side configures a virtual cell ID for the uplink DMRS of the user terminal when the bandwidth of the uplink MU pairing by the user terminal is the same as that of the other user terminals.

When the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps the bandwidth of the uplink MU pairing with the multiple user terminals, the network side configures multiple virtual cell IDs for the uplink DMRS of the user terminal.

In the embodiment of the present invention, the network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

The user terminal receives the virtual cell ID configured on the network side, and generates an uplink DMRS sequence based on the virtual cell ID.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values At the same time, DMRS sequences on different bandwidths will be generated based on the multiple values.

In the embodiment of the present invention, the network side includes a network side network element such as a base station.

4 is a flowchart of a method for transmitting an uplink demodulation reference signal according to an embodiment of the present invention. As shown in FIG. 4, the method for transmitting an uplink demodulation reference signal in this example includes the following steps:

Step 401: The user terminal receives a time-frequency resource or a parameter set required for sending an uplink DMRS configured by the network side.

In the embodiment of the present invention, the time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

Step 402: The user terminal generates an uplink DMRS sequence and transmits the generated uplink DMRS sequence.

The time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the user terminal further receives the following information from the network side:

DMRS on 2 time domain symbols in each sub-frame using a 2-bit orthogonal mask OCC Perform time domain expansion, where OCC is [+1, +1], [+1, -1].

Alternatively, in the embodiment of the present invention, the user terminal further receives the following information from the network side:

The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC.

The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, - 1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1 , +1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

In the embodiment of the present invention,

The network side configures a virtual cell ID for the uplink DMRS of the user terminal when the bandwidth of the uplink MU pairing is the same as that of the other user terminals.

The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.

In the embodiment of the present invention, the network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

In the embodiment of the present invention, the user terminal generates an uplink DMRS sequence, including:

The user terminal receives the virtual cell ID configured on the network side, and generates an uplink DMRS sequence based on the virtual cell ID.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values At the same time, DMRS sequences on different bandwidths will be generated based on the multiple values.

In the embodiment of the present invention, the network side includes a network side network element such as a base station.

The essence of the technical solution of the embodiment of the present invention is further clarified by specific examples below.

Example 1

The base station configures the time-frequency resource required for transmitting the uplink demodulation reference signal (DMRS) for the user terminal, and indicates to the user terminal, or the base station and the user terminal pre-define the time-frequency resources required for transmitting the uplink DMRS.

The time-frequency resource required for transmitting the uplink DMRS is as shown in FIG. 5, and the time-frequency resource includes a time domain location and a frequency domain location.

Time domain locations include:

When the uplink symbol cyclic prefix length is a normal length, the time domain position is the fourth time domain symbol of each time slot of the subframe; when the uplink symbol cyclic prefix length is the extended length, the time domain position is each of the subframes. The third time domain symbol of the time slot;

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or an subcarrier position indexed to an even number;

Or the odd subcarrier position in the subcarrier with an index on the PUSCH bandwidth occupied by the user terminal, or the even subcarrier position in the subcarrier with an odd index, or the odd subcarrier in the subcarrier with an even index. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all the subcarrier positions in the partial bandwidth on the PUSCH bandwidth occupied by the user terminal, where part of the bandwidth is a bandwidth configured by the base station that does not overlap with other MU paired users.

The user terminal performs time domain extension on the DMRS on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1]

Taking two user terminals (referred to as user 1 and user 2) as the uplink MU pairing as an example, the uplink symbol cyclic prefix length is assumed to be a normal length, and the time domain positions occupied by the uplink DMRSs of user 1 and user 2 are each subframe. The fourth time domain symbol of the time slot, the frequency domain location is the user's The index on the PUSCH bandwidth is an odd subcarrier position, or both are subcarrier positions indexed by an even number, wherein the bandwidth occupied by the user 1 and the PUSCH of the user partially overlaps or overlaps completely. User 1 uses [+1, +1] to perform time domain extension on the DMRS on the two time domain symbols in the subframe, and User 2 uses [+1, -1] to perform DMRS on the two time domain symbols in the subframe. Time domain expansion, so that User 1 and User 2 can perform orthogonal pairing;

Or, the frequency domain location occupied by the uplink DMRS of the user 1 is an odd-numbered sub-carrier position on the PUSCH bandwidth of the user 1, and the frequency domain location occupied by the uplink DMRS of the user 2 is an index on the PUSCH bandwidth of the user 2 Even subcarrier positions, so that User 1 and User 2 can also achieve orthogonal pairing;

Example 2

The base station configures the time-frequency resource required for sending the uplink DMRS for the user terminal, and indicates to the user terminal, or the base station and the user terminal pre-define the time-frequency resources required for sending the uplink DMRS.

The time-frequency resource required for transmitting the uplink DMRS is as shown in FIG. 6, and the time-frequency resource includes a time domain location and a frequency domain location.

Time domain locations include:

When the uplink symbol cyclic prefix length is a normal length, the time domain position is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe; when the uplink symbol cyclic prefix length is an extended length, the time domain The location is the second time domain symbol and the fifth time domain symbol of each time slot of the subframe;

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or an subcarrier position indexed to an even number;

Or the subcarrier position of the upper half bandwidth subcarrier or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal;

For example, the uplink MU pairing is performed by four user terminals (referred to as user 1, user 2, user 3, and user 4). Assume that the uplink symbol cyclic prefix length is a normal length, and user 1, user 2, and user 3 and the time domain location occupied by the uplink DMRS of the user 4 is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe, and the frequency domain location is an odd number on the PUSCH bandwidth of the user. The subcarrier positions are all subcarrier positions indexed to an even number, wherein the bandwidth occupied by the PUSCHs of the four users partially overlaps or overlaps completely. User 1 uses [+1, +1, +1, +1] to perform time domain extension on DMRS on four time domain symbols in a subframe, and user 2 uses [+1, -1, +1, -1] pairs. The DMRS on the four time domain symbols in the subframe performs time domain extension, and the user 3 uses [+1, +1, -1, -1] to perform time domain extension on the DMRS on the four time domain symbols in the subframe, the user 4 Use [+1, -1, -1, +1] to perform time domain expansion on the DMRS on the four time domain symbols in the subframe, so that User 1, User 2, User 3, and User 4 can be positive. Matching

Further, when the frequency domain location occupied by the uplink DMRS of the user is an odd subcarrier, the even subcarrier of the time domain symbol in which the uplink DMRS is located is used to carry the PUSCH data of the user; when the frequency domain location occupied by the uplink DMRS of the user is When the even subcarriers are used, the odd subcarriers of the time domain symbols in which the uplink DMRS is located are used to carry the PUSCH data of the user;

Further, when the frequency domain location occupied by the uplink DMRS of the user is the upper half bandwidth subcarrier on the bandwidth occupied by the PUSCH of the user, the second half bandwidth subcarrier on the bandwidth occupied by the user's PUSCH is used to carry the PUSCH of the user. Data; when the frequency domain location occupied by the uplink DMRS of the user is the lower half bandwidth subcarrier on the bandwidth occupied by the user's PUSCH, the upper half bandwidth subcarrier on the bandwidth occupied by the user's PUSCH is used to carry the PUSCH data of the user. ;

Example 3

The base station configures the time-frequency resource required for transmitting the uplink demodulation reference signal (DMRS) for the user terminal, and indicates to the user terminal, or the base station and the user terminal pre-define the time-frequency resources required for transmitting the uplink DMRS.

The time-frequency resource required for transmitting the uplink DMRS is as shown in FIG. 7, and the time-frequency resource includes a time domain location and a frequency domain location.

Time domain locations include:

When the uplink symbol cyclic prefix length is a normal length, the time domain position is the fourth time domain symbol of each time slot of the subframe; when the uplink symbol cyclic prefix length is the extended length, the time domain position is each of the subframes. The third time domain symbol of the time slot;

The frequency domain location includes:

All subcarrier positions on the PUSCH bandwidth occupied by the user terminal

For example, the uplink MU pairing is performed by four user terminals (referred to as user 1, user 2, user 3, and user 4). Assume that the uplink symbol cyclic prefix length is an ordinary length, and the uplink of user 1, user 2, user 3, and user 4 is assumed. The time domain position occupied by the DMRS is the fourth time domain symbol of each time slot of the subframe, and the frequency domain location is all the subcarrier positions on the PUSCH bandwidth of the user, wherein the bandwidth of the PUSCH of the four users exists. Overlap or overlap all. User 1 uses [+1, +1, +1, +1] to perform time domain extension on DMRS on four time domain symbols in two subframes, and user 2 uses [+1, -1, +1, -1] Time domain expansion of DMRS on four time domain symbols in two subframes, user 3 uses [+1, +1, -1, -1] to perform time domain on DMRS on four time domain symbols in two subframes Extended, user 4 uses [+1, -1, -1, +1] to perform time domain expansion on DMRS on four time domain symbols in two subframes, so that User 1, User 2, User 3, and User 4 Orthogonal pairing can be done.

Example 4

The base station configures, for the user terminal, a parameter set required for transmitting an uplink demodulation reference signal (DMRS), and indicates to the user terminal, where the parameter set includes:

a virtual cell ID set, user-specific or resource-specific parameters for determining an uplink DMRS sequence group number, user-specific or resource-specific parameters for determining an uplink DMRS sequence shift pattern;

Further, the virtual cell ID set includes one or more virtual cell IDs. When multiple virtual cell IDs are included, DMRS sequences on different bandwidths are generated according to the multiple virtual cell IDs.

Further, the base station performs the bandwidth overlap of the uplink MU pairing by the user equipment as the user. The uplink DMRS of the terminal is configured with one or more virtual cell IDs, and the base station configures a virtual cell ID for the uplink DMRS of the user terminal when the bandwidth of the user terminal and the other user terminals are the same and fully overlapped; When the bandwidth of the uplink MU pairing between the terminal and other user terminals overlaps partially or the bandwidth of the uplink MU pairing with multiple user terminals overlaps, the base station configures multiple virtual cell IDs for the uplink DMRS of the user terminal.

The user terminal receives the virtual cell ID configured by the base station, and generates an uplink DMRS sequence based on the virtual cell ID.

Further, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or more values, when When multiple values are included, DMRS sequences on different bandwidths will be generated based on multiple values.

As shown in FIG. 8 , User 1 and User 2 perform MU pairing with unequal bandwidths, and there is partial overlap between the uplink DMRSs in the frequency domain, that is, overlap in the bandwidth 2. The base station can configure two virtual cell IDs for user 1, assuming ID1 and ID2, the DMRS sequence of user 1 on bandwidth 1 is generated according to ID1, the DMRS sequence on bandwidth 2 is generated according to ID2, and the base station is also configured for user 2 at the same time. 2 virtual cell IDs, ID2 and ID3, the DMRS sequence of user 2 on bandwidth 2 is generated according to ID2, the DMRS sequence on bandwidth 3 is generated according to ID3; since the DMRS sequences of user 1 and user 2 on bandwidth 2 are based on ID2 is generated, and the root sequence is the same, so that different cyclic shift values of the sequence can be orthogonally multiplexed, so that User 1 and User 2 are orthogonally multiplexed.

Or, as shown in FIG. 9 , user 1 and user 2 perform MU pairing with unequal bandwidths, and there is partial overlap between uplink DMRSs in the frequency domain, that is, overlap in bandwidth 2. The base station can configure two virtual cell IDs for user 1, assuming ID1 and ID2, the DMRS sequence of user 1 on bandwidth 1 is generated according to ID1, the DMRS sequence on bandwidth 2 is generated according to ID2, and the base station is also configured for user 2 at the same time. 1 virtual cell ID, assuming ID2, the DMRS sequence of user 2 on bandwidth 2 is generated according to ID2; since the DMRS sequences of user 1 and user 2 on bandwidth 2 are all produced according to ID2 The root sequence is the same, so the different cyclic shift values of the sequence can be orthogonally multiplexed, so that User 1 and User 2 are orthogonally multiplexed.

Or, as shown in FIG. 10, user 1 and user 2 perform MU pairing with unequal bandwidths, and there is partial overlap between uplink DMRSs in the frequency domain, that is, overlap in bandwidth 2. The base station can configure three virtual cell IDs for user 1, assuming ID1, ID2 and ID3, the DMRS sequence of user 1 on bandwidth 1 is generated according to ID1, the DMRS sequence on bandwidth 2 is generated according to ID2, and the DMRS sequence on bandwidth 3 In addition, the base station also configures one virtual cell ID for user 2, assuming ID2, the DMRS sequence of user 2 on bandwidth 2 is generated according to ID2; since both user 1 and user 2 have DMRS sequences on bandwidth 2 According to the ID2 generation, the root sequence is the same, so the different cyclic shift values of the sequence can be orthogonally multiplexed, so that the user 1 and the user 2 are orthogonally multiplexed.

Example 5

The base station configures, for the user terminal, a parameter set required for transmitting an uplink demodulation reference signal (DMRS), and indicates to the user terminal, where the parameter set includes:

User-specific or resource-specific parameters for determining an uplink DMRS sequence group number, user-specific or resource-specific parameters for determining an uplink DMRS sequence shift pattern;

Further, the user-specific or resource-specific parameters include one or more values. When multiple values are included, the DMRS sequence on different bandwidths will be generated according to the values of the multiple parameters.

Further, the base station configures one or more user-specific or resource-specific parameters for the uplink DMRS of the user terminal according to the bandwidth overlap condition of the uplink MU pairing by the user terminal, including: when the user terminal performs uplink MU pairing with other user terminals. When the bandwidth is the same and completely overlaps, the base station configures a user-specific or resource-specific parameter for the uplink DMRS of the user terminal; when the user terminal overlaps with other user terminals for the uplink MU, the bandwidth overlaps with multiple user terminals. When the bandwidth of the MU pairing overlaps, the base station configures multiple user-specific or resource-specific parameters for the uplink DMRS of the user terminal.

Further, the resource-specific parameters include: for the end of the same user, the base station performs bandwidth doubling of the uplink MU pairing according to the user terminal, and can divide the bandwidth resources occupied by the user into multiple types, and the base station separately performs each type of Bandwidth resource configuration resource-specific parameters. For example, taking FIG. 8 as an example, for user 1, two resource-specific parameters can be allocated, which are recorded as parameter 1 and parameter 2; for user 2, two resource-specific parameters can be allocated, which are recorded as parameter 2 and parameters. 3.

Further, time domain OCC expansion can be performed on the uplink DMRS sequences with overlapping bandwidths.

The user terminal receives user-specific or resource-specific parameters configured by the base station, and generates an uplink DMRS sequence based on user-specific or resource-specific parameters.

FIG. 11 is a schematic structural diagram of a network side network element according to an embodiment of the present invention. As shown in FIG. 11, the network side network element in the embodiment of the present invention includes: a determining unit 90 and a notification unit 91;

The determining unit 90 is configured to determine a time-frequency resource or a parameter set required for the user terminal to send the uplink DMRS, or configured to pre-configure or pre-define the time-frequency resource or parameter set required by the user terminal to send the uplink DMRS with the user terminal. ;

The notification unit 91 is configured to notify the user terminal of the configured time-frequency resource or parameter set;

The time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the cyclic prefix is used, the time domain location is the second time domain symbol of each time slot of the subframe. And the sixth time domain symbol.

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.

In the embodiment of the present invention, the notification unit further notifies the user terminal of the following information:

Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+ 1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1, + 1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

In the embodiment of the present invention, the virtual cell ID set includes one or more virtual cell IDs. When multiple virtual cell IDs are included, DMRS sequences on different bandwidths are generated according to the multiple virtual cell IDs.

The determining unit 90 is further configured to

When the bandwidth of the uplink MU pairing between the user terminal and the other user terminals is the same and completely overlaps, configure a virtual cell ID for the uplink DMRS of the user terminal;

When the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps the bandwidth of the uplink MU pairing with the plurality of user terminals, a plurality of virtual cell IDs are configured for the uplink DMRS of the user terminal.

The determining unit 90 is further configured to configure an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values At the same time, DMRS sequences on different bandwidths will be generated based on the multiple values.

In the embodiment of the present invention, the network side network element includes a base station and the like.

It should be understood by those skilled in the art that the implementation functions of the processing units in the network side network element shown in FIG. 11 can be understood by referring to the related description of the foregoing embodiment of the resource configuration method of the uplink demodulation reference signal. The functions of each unit in the network side network element shown in FIG. 11 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.

12 is a schematic structural diagram of a transmission apparatus of an uplink demodulation reference signal according to an embodiment of the present invention. As shown in FIG. 12, the apparatus for transmitting an uplink demodulation reference signal of the present example includes: a receiving unit 101, a generating unit 102, and a transmission unit. 103, where:

The receiving unit 101 is configured to receive a time-frequency resource or a parameter set required for transmitting the uplink demodulation reference signal DMRS configured by the network side;

The generating unit 102 is configured to generate an uplink DMRS sequence;

The transmitting unit 103 is configured to transmit the generated uplink DMRS sequence.

The time-frequency resource or parameter set includes:

Time domain location, frequency domain location, virtual cell ID set, used to determine the uplink DMRS sequence group Numbered user-specific or resource-specific parameters, user-specific or resource-specific parameters used to determine the upstream DMRS sequence shift pattern.

In the embodiment of the present invention, the time domain location includes:

When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.

The frequency domain location includes:

The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal

In the embodiment of the present invention, the receiving unit 101 is further configured to receive the following information:

Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+ 1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1, + 1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].

As an implementation manner, the receiving unit 40 is further configured to receive the virtual cell ID configured by the network side;

Correspondingly, the generating unit 41 is further configured to generate an uplink DMRS sequence based on the virtual cell ID.

The virtual cell ID set includes one or more virtual cell IDs. When multiple virtual cell IDs are included, DMRS sequences on different bandwidths are generated according to the multiple virtual cell IDs.

In the embodiment of the present invention, the virtual cell ID set includes one or more virtual cell IDs configured for the uplink DMRS of the user terminal according to the bandwidth overlapping condition of the uplink MU pairing by the user terminal.

In the embodiment of the present invention, when the bandwidth of the uplink MU pairing between the user terminal and the other user terminal is the same and completely overlaps, the network side configures a virtual cell ID for the uplink DMRS of the user terminal;

The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.

The network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.

In the embodiment of the present invention, the user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, the user-specific or resource-specific parameters for determining the uplink DMRS sequence shift pattern include one or Multiple values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern include multiple values When the DMRS sequence on different bandwidths will be based on A plurality of values are generated.

In the embodiment of the present invention, the network side network element includes a base station and the like.

It should be understood by those skilled in the art that the implementation functions of the processing units in the transmission apparatus of the uplink demodulation reference signal shown in FIG. 12 can be understood by referring to the related description of the embodiment of the resource allocation method of the foregoing uplink demodulation reference signal. The functions of the units in the transmission apparatus of the uplink demodulation reference signal shown in FIG. 12 can be realized by a program running on the processor, or can be realized by a specific logic circuit.

Embodiments of the present invention also describe a storage medium in which a computer program is stored, the computer program including an execution code of a resource configuration method for performing an uplink demodulation reference signal of the foregoing embodiments.

The embodiment of the invention further describes a storage medium in which a computer program is stored, the computer program comprising an execution code for performing the transmission method of the uplink demodulation reference signal of the foregoing embodiments.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated in one processing order. In the meta element, each unit may be separately used as a unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware or a hardware plus software functional unit. Formal realization.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a removable storage device, a read only memory (ROM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Alternatively, the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a removable storage device, a read only memory (ROM), a magnetic disk, or an optical disk, and the like, which can store program codes.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Industrial applicability

The present invention is applicable to the scenario of uplink multi-user MU pairing, especially when there are many uplink users, the uplink DMRS sequence configured for the user terminal in the embodiment of the present invention, and multiplexing the DMRS does not cause the shortage of uplink DMRS resources of multiple users. Therefore, the requirements of multi-user communication with the network side can be satisfied, and the communication access efficiency is improved.

Claims (36)

1. A resource configuration method, including:

   Determining a time-frequency resource or a parameter set required for the user terminal to send the uplink demodulation reference signal DMRS, and notifying the user terminal of the configured time-frequency resource or parameter set; or pre-defining between the network side and the user terminal The time-frequency resource or parameter set required by the user terminal to send the uplink DMRS.
2. The method of claim 1 wherein the time-frequency resource or parameter set comprises at least one of the following:

   Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.
3. The method of claim 2 wherein said time domain location comprises:

   When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

   Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.
4. The resource configuration method of an uplink demodulation reference signal according to claim 2, wherein the frequency domain location comprises:

   The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

   Or the index on the PUSCH bandwidth occupied by the user terminal is an odd number of subcarriers. An odd subcarrier position, or an even subcarrier position in an odd numbered subcarrier, or an odd subcarrier position in an even numbered subcarrier, or an even subcarrier position in an even subcarrier;

   Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.
5. The resource configuration method for an uplink demodulation reference signal according to claim 3, wherein the method further comprises: transmitting the following information to the user terminal:

   The time domain extension of the DMRS on the two time domain symbols in each subframe is performed using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1].
6. The resource configuration method for an uplink demodulation reference signal according to claim 3, wherein the method further comprises: transmitting the following information to the user terminal:

   The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC.
7. The resource allocation method for an uplink demodulation reference signal according to claim 6, wherein the 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, - 1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, + 1], [+1,-1,+1,-1], [+1,+1,-1,-1], [-1,+1,+1,-1]; or [+1 , +1, +1, +1], [+1, -1, +1, -1], [-1, -1, +1, +1], [+1, -1, -1, + 1].
8. The resource configuration method for an uplink demodulation reference signal according to claim 2, wherein the virtual cell ID set includes one or more virtual cell IDs, and when multiple virtual cell IDs are included, DMRS sequences on different bandwidths Will be generated according to the plurality of virtual cell IDs.
9. The resource configuration method of the uplink demodulation reference signal according to claim 1, wherein the method further comprises:

   When the bandwidth of the uplink MU pairing between the user terminal and the other user terminals is the same and completely overlaps, the network side configures a virtual cell ID for the uplink DMRS of the user terminal; or

   The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.
10. The resource configuration method for an uplink demodulation reference signal according to claim 1, wherein the network side configures an OCC for an uplink DMRS sequence on a part of the bandwidth of the user terminal.
11. The resource configuration method for an uplink demodulation reference signal according to claim 2, wherein the user-specific or resource-specific parameters for determining an uplink DMRS sequence group number are used to determine an uplink DMRS sequence shift pattern. User-specific or resource-specific parameters each include one or more values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or the user used to determine the uplink DMRS sequence shift pattern When the proprietary or resource-specific parameters include multiple values, the DMRS sequence on different bandwidths will be generated based on the multiple values.
12. A signal transmission method includes:

    The time-frequency resource or parameter set required for transmitting the uplink demodulation reference signal DMRS configured on the network side is received, and an uplink DMRS sequence is generated and transmitted.
13. The method of claim 12, wherein the time-frequency resource or parameter set comprises:

    Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.
14. The method of claim 13 wherein said time domain location comprises:

    When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol of each time slot of the subframe; or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain position is the second time domain symbol of each time slot of the subframe And the sixth time domain symbol; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.
15. The method of claim 13 wherein said frequency domain location comprises:

    The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

    Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

    Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.
16. The method of claim 14, wherein the method further comprises the user terminal receiving the following information:

    The DMRS on the two time domain symbols in each subframe is time-domain extended using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1].
17. The method of claim 14, wherein the method further comprises the user terminal receiving the following information:

    The DMRS on the four time domain symbols in each subframe is time-domain extended using a 4-bit orthogonal mask OCC.
18. The method according to claim 17, wherein said 4-bit long orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1] , [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1,- 1, +1, -1], [+1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, + 1], [+1, -1, +1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].
19. The method according to claim 13, wherein the virtual cell ID set includes one or more virtual cell IDs, and when a plurality of virtual cell IDs are included, DMRS sequences on different bandwidths are to be according to the plurality of virtual cells. ID is generated.
20. The method of claim 12, wherein the method further comprises:

    When the bandwidth of the uplink MU pairing between the user terminal and the other user terminals is the same and completely overlaps, the network side configures a virtual cell ID for the uplink DMRS of the user terminal; or

    The network side configures a plurality of virtual cell IDs for the uplink DMRS of the user terminal when the user terminal overlaps the bandwidth of the uplink MU pairing with other user terminals or overlaps with the bandwidth of the uplink MU pairing by the multiple user terminals.
21. The method of claim 12, wherein the network side configures an OCC for an uplink DMRS sequence on a portion of the bandwidth of the user terminal.
22. The method of claim 21 wherein said generating an uplink DMRS sequence comprises:

    The user terminal receives the virtual cell ID configured on the network side, and generates an uplink DMRS sequence based on the virtual cell ID.
23. The method of claim 13, wherein the user-specific or resource-specific parameters for determining an uplink DMRS sequence group number, user-specific or resource-specific for determining an uplink DMRS sequence shift pattern The parameters each include one or more values; the user-specific or resource-specific parameters used to determine the uplink DMRS sequence group number or user-specific or resource-specific parameters used to determine the uplink DMRS sequence shift pattern When multiple values are included, DMRS sequences on different bandwidths will be generated based on the multiple values.
24. A network side network element, including:

    a determining unit, configured to determine a time-frequency resource or a parameter set required for the user terminal to send the uplink demodulation reference signal DMRS, or configured to pre-define with the user terminal the time-frequency resource or parameter set required by the user terminal to send the uplink DMRS ;

    The notification unit is configured to notify the user terminal of the configured time-frequency resource or parameter set.
25. The network side network element according to claim 24, wherein the time-frequency resource or parameter The set includes:

    Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.
26. The network side network element according to claim 25, wherein the time domain location comprises:

    When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

    Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.
27. The network side network element according to claim 25, wherein the time domain location comprises: the frequency domain location comprises:

    The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

    Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

    Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.
28. The network side network element according to claim 26, wherein the notification unit further notifies the user terminal of the following information:

    Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

    Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

    The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+ 1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1, + 1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].
29. A signal transmission device, the device comprising:

    The receiving unit is configured to receive a time-frequency resource or a parameter set required for sending the uplink demodulation reference signal DMRS configured by the network side;

    Generating unit configured to generate an uplink DMRS sequence;

    And a transmission unit configured to send the generated uplink DMRS sequence.
30. The apparatus of claim 29, wherein the time-frequency resource or parameter set comprises:

    Time domain location, frequency domain location, virtual cell ID set, user-specific or resource-specific parameters for determining the uplink DMRS sequence group number, user-specific or resource-specific for determining the uplink DMRS sequence shift pattern parameter.
31. The apparatus of claim 30 wherein said time domain location comprises:

    When the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is the fourth time domain symbol of each time slot of the subframe; when the subframe carrying the uplink DMRS is an extended cyclic prefix, the time domain location The third time domain symbol for each time slot of the subframe;

    Or, when the subframe carrying the uplink DMRS is a regular cyclic prefix, the time domain location is a second time domain symbol and a sixth time domain symbol of each time slot of the subframe; and the subframe carrying the uplink DMRS is an extension. When the prefix is cyclically, the time domain location is the second time domain symbol and the sixth time domain symbol of each time slot of the subframe.
32. The apparatus of claim 30 wherein said frequency domain location comprises:

    The index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position, or the index is an even subcarrier position; or the upper half bandwidth subcarrier position or the lower half bandwidth of the bandwidth occupied by the PUSCH of the user terminal Subcarrier position;

    Or the index on the PUSCH bandwidth occupied by the user terminal is an odd subcarrier position in an odd number of subcarriers, or an even subcarrier position in an odd number of subcarriers, or an odd number in an even number of subcarriers. Carrier position, or an even subcarrier position in an even number of subcarriers;

    Or all subcarrier positions in a part of the bandwidth on the PUSCH bandwidth occupied by the user terminal.
33. The apparatus of claim 31, wherein the receiving unit is further configured to receive the following information:

    Performing time domain expansion on DMRSs on two time domain symbols in each subframe by using a 2-bit orthogonal mask OCC, where OCC is [+1, +1], [+1, -1];

    Or performing time domain expansion on the DMRSs on the four time domain symbols in each subframe by using a 4-bit orthogonal mask OCC;

    The 4-bit orthogonal mask OCC is [+1, +1, +1, +1], [+1, -1, +1, -1], [+1, +1, -1, -1], [+1, -1, -1, +1]; or [+1, +1, +1, +1], [+1, -1, +1, -1], [+ 1, +1, -1, -1], [-1, +1, +1, -1]; or [+1, +1, +1, +1], [+1, -1, + 1, -1], [-1, -1, +1, +1], [+1, -1, -1, +1].
34. The device according to claim 29, wherein

    The receiving unit is further configured to receive the virtual cell ID configured on the network side;

    Correspondingly, the generating unit is further configured to generate an uplink DMRS sequence based on the virtual cell ID.
35. A storage medium storing a computer program configured to perform a resource allocation method of an uplink demodulation reference signal according to any one of claims 1 to 11.
36. [Correct according to Rule 26 09.03.2017]
    A storage medium storing a computer program configured to perform the method of transmitting an uplink demodulation reference signal according to any one of claims 12 to 23.

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