WO2017202333A1

WO2017202333A1 - Method and device for transmitting reference signal, network apparatus and user equipment unit

Info

Publication number: WO2017202333A1
Application number: PCT/CN2017/085682
Authority: WO
Inventors: 王婷; 李元杰
Original assignee: 华为技术有限公司
Priority date: 2016-05-24
Filing date: 2017-05-24
Publication date: 2017-11-30

Abstract

Provided in an embodiment of the invention are a method and device for transmitting a reference signal, a network apparatus, and a user equipment unit. The method comprises: a first network apparatus (NE1) to which a first cell (CELL1) belongs transmitting, according to first configuration information, a first reference signal (RS) to a second network apparatus (NE2) to which a second cell (CELL2) belongs, the first configuration information comprising information for indicating a time-frequency resource used by the NE1 to transmit the first RS. The method for transmitting a reference signal provided in the embodiment of the invention can solve a problem in the prior art in which interference results in a high bit error rate of uplink data.

Description

Reference signal transmission method and device, network device and user equipment

Technical field

The embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a method and a device for transmitting a reference signal, a network device, and a user equipment.

Background technique

With the advent of the third generation of wireless communication technology and the long-term evolution of the Term Evolution (LTE) technology, the rapid growth of mobile network data transmission rate and total data demand puts forward higher requirements for the utilization of spectrum resources.

In order to improve the utilization of spectrum resources, LTE Frequency Division Duplex (FDD) technology distinguishes transmit and receive channels according to frequency, and LTE Time Division Duplex (TDD) technology distinguishes transmit and receive channels according to time slots. .

However, when multiple LTE cells are configured with the same working frequency range, when the adjacent or similar first base station and the second base station transmit and receive data, the downlink signal of the first base station may interfere with the uplink signal of the second base station. The error rate of the uplink data sent by the user equipment under the second base station is high.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting a reference signal, a network device and a user equipment, which are used to solve the problem of high error rate of uplink data due to interference in the prior art.

A first aspect of the embodiments of the present invention provides a method for transmitting a reference signal, including:

The first network device NE1 to which the first cell CELL1 belongs sends the first reference signal RS to the second network device NE2 to which the second cell CELL2 belongs according to the first configuration information; the first configuration information is used to indicate that the NE1 sending station is included. The information of the time-frequency resource used when the first RS is transmitted is described.

Among them, CELL1 and CELL2 are respectively used to provide network access services to user equipments under NE1 and NE2. CELL1 and CELL2 may be adjacent or identically covered cells, and NE1 may send the first RS to each antenna port of NE2 through each antenna port of CELL1.

The first RS is used by the NE2 to cancel the interference of the NE1 on the first uplink data according to the first RS, where the first uplink data is from a user equipment under the NE2.

The NE1 sends the first RS to the antenna port of the CELL2 of the NE2 through the antenna port of the CELL1, and before the NE1 sends the first RS to the NE2 according to the first configuration information, the method includes:

The NE1 detects that the ratio of the uplink and downlink subframes of the CELL1 and the CELL2 is inconsistent.

In conjunction with the first aspect, in a first optional implementation manner of the first aspect, the transmitting method further includes:

The NE1 sends a scheduling result of the first downlink data and/or the first downlink data to the NE2; the first downlink data is a user equipment that is sent by the NE1 to the first cell CELL1 of the NE1. of.

The first downlink data may be downlink data sent by the NE1 to the served UE in a subframe that interferes with the first uplink data of the NE2, or sent by the NE1 in a subframe that interferes with the first uplink data of the NE2. Either Downstream data.

Optionally, the scheduling result of the first downlink data may include, but is not limited to, at least one of a transmission mode, a resource location, a modulation mode, a precoding matrix, and the like.

In general, the NE1 needs to inform the NE2 of the downlink data of the UE scheduled by the NE1 and the scheduling information, that is, the scheduling result of the first downlink data and the first downlink data, in order to facilitate the NE2 to restore the interference information.

Optionally, the NE1 may also send only the first downlink data, but does not send the scheduling result of the first downlink data. For example, the first downlink data may be transmitted using a predefined MCS or transmission mode. For example, for a transmission mode with a simple transmission mode, for example, if CELL1 is a single antenna or a transmission method using transmission diversity, and the first downlink data sent by NE1 is the first downlink data processed by the precoding matrix, NE1 is also The scheduling result of the first downlink data may not be transmitted.

Alternatively, optionally, the NE1 may not send the first downlink data, but only the scheduling result of the first downlink data. For example, the UE under NE1 may be linked to multiple cells, that is, the UE is linked to the CELL1 of the NE1 in addition to the CELL1 of the NE1, and the downlink data of the UE is pre-stored on the NE2 to which the CELL1 belongs and the NE2 to which the CELL2 belongs.

Optionally, the scheduling result of the first downlink data and/or the first downlink data sent by the NE1 to the NE2 may be sent by using a wired or wireless manner, and may be sent by using a resource different from the data sent by the user equipment when transmitting by using a wireless manner.

Optionally, the NE1 sends the scheduling result of the first downlink data and/or the first downlink data to the NE2 by using an X2 interface between the NE1 and the NE2.

With reference to the first aspect, the optional embodiment of the first optional embodiment of the first aspect, in the second optional implementation manner of the first aspect, the first configuration information may include :

Subframe information of the first RS, and/or,

The first resource unit RE indicates information, and the first RE indication information is used to indicate an RE occupied by the first RS.

With reference to the first aspect, the optional embodiment of any one of the first to the second aspect, in the third optional implementation manner of the first aspect, the first cell of the NE1 includes at least An antenna port, where the first RE indication information includes:

And a pilot pattern corresponding to each antenna port of the CELL1, where the pilot pattern is used to indicate that each antenna port of the first cell sends the RE of the first RS.

With reference to the first aspect, the optional implementation manner of any one of the first to third aspects of the first aspect, in a fourth optional implementation manner of the first aspect, each antenna port of the NE1 corresponds to At least one of the pilot patterns belongs to a set of pilot patterns selectable by the channel state information reference signal CSI-RS.

With reference to the first aspect, the optional implementation manner of any one of the first to fourth aspects of the first aspect, in a fifth optional implementation manner of the first aspect, the subframe information of the first RS The determined subframe belongs to a set of optional subframes of the sounding reference signal SRS of NE2. To reduce the impact on the uplink data of the user equipment under NE2.

Optionally, the RE occupied by the first RS indicated by the first RE indication information is different from the RE used by the SRS under the NE2; and/or; the RE occupied by the first RS indicated by the first RE indication information and the SRS used by the NE2 The subcarriers in which the REs are located are different; and/or; the REs occupied by the first RS indicated by the first RE indication information are different from the symbols of the REs used by the SRSs under the NE2.

In combination with the first aspect, the optional embodiment of any one of the first to fourth aspects of the first aspect, in the first aspect In a fifth optional implementation, the symbol of the RE occupied by the first RS indicated by the first RE indication information is the last symbol of the subframe determined by the subframe information of the first RS.

With reference to the first aspect, the optional implementation manner of any one of the first to fifth aspects of the first aspect, in a sixth optional implementation manner of the first aspect, the subframe information of the first RS For a dedicated subframe, the dedicated subframe carries the first RS. The data frame information may not be transmitted on the dedicated subframe, but only the control information and the reference signal are transmitted.

With reference to the first aspect, the optional implementation manner of any one of the first to sixth aspects of the first aspect, in a seventh optional implementation manner of the first aspect, the subframe information of the first RS Determining only the first RS in the determined subframe, or

The subframe determined by the subframe information of the first RS includes the first RS and physical downlink control channel PDCCH information, or includes the first RS and CRS information, or includes the first RS and PDCCH information, and CRS information. When the first RS is transmitted in a manner of simultaneously transmitting the PDCCH and the first RS in the dedicated subframe, the influence on the PDCCH of the user equipment under the NE1 may be avoided.

With reference to the first aspect, the optional implementation manner of any one of the first to seventh aspects of the first aspect, in the eighth optional implementation manner of the first aspect, the subframe information of the first RS The determined subframe includes the first RS and the PDCCH information, and the PDCCH information is located in the first to fourth symbols.

With reference to the first aspect, the optional implementation of any one of the first to eighth aspects of the first aspect, in the ninth optional implementation manner of the first aspect, the first configuration information further includes And the scrambling code is used by the NE1 to scramble the first RS.

Optionally, the scrambling code may be an identifier of the first cell, where the scrambling code may be used to indicate that the first RS corresponds to the first cell. Optionally, the scrambling code may also be an identifier of the NE1. In this case, the scrambling code may be used to indicate that the first RS corresponds to the NE1.

With reference to the first aspect, the optional implementation manner of any one of the first to the ninth aspects of the first aspect, in the tenth optional implementation manner of the first aspect, the NE1 is configured according to the first configuration information Before sending the first RS to NE2, it includes:

The NE1 sends the second configuration information to the NE2, where the second configuration information includes subframe information of the first RS in the first configuration information, and/or second RE indication information;

The second RE indication information includes: the first RE indication information in the first configuration information, or

Transmitting, by the first RE indication information, the symbol of the RE occupied by the first RS and the subcarrier where the RE occupied by the first RS indicated by the first RE indication information is sent by the NE1 The type of the pilot pattern corresponding to each antenna port used by an RS indicates at least one of the three items.

It should be noted that the type of the pilot pattern refers to a parameter that is included in the type indication identifier of the pilot pattern that determines a pilot pattern. The type indication identifier of the pilot pattern may include: a type of the reference signal, and an antenna port number. One or more of an antenna port number and a pilot pattern index. The pilot pattern index is used to indicate one of the one or more pilot patterns. Optionally, the type of the reference signal may include an inter-cell reference signal, a CSI-RS, a DMRS, an SRS, and the like.

It should be noted that the second configuration information may include subframe information of the first RS and/or second RE indication information. The second configuration information can be used to determine the first configuration information.

In a possible case, the NE2 may pre-store part of the first configuration information or not the first configuration information, and the second configuration information sent by the NE1 to the NE2 may include only the first configuration information that is missing, for example, the NE2 is pre-stored. The second configuration information of the symbol in which the RE of the first RS is located may be sent to the NE2, and the NE2 may send the second configuration information of the symbol in which the RE occupied by the first RS is located, and the NE2 may be configured according to the second configuration information. The pre-stored part of the first configuration information is determined to receive the time-frequency resource of the first RS; if the NE2 does not store the first configuration information, the NE1 may send the second configuration information including all the first configuration information to the NE2, that is, the first The second configuration information includes the subframe information of the first RS and the second RE indication information, where the second RE indication information includes the RE occupied by the first RS.

In another possible case, the NE2 may pre-store the type indication identifier of the set of pilot patterns and the corresponding pilot pattern, and the third configuration information sent by the NE1 may include the subframe corresponding to the first RS and the corresponding antenna port. The type of the pilot pattern indicates the identifier, and the NE2 may determine, according to the type indication identifier of the pilot pattern corresponding to each antenna port, that each antenna port receives the time-frequency resource of the first RS.

In conjunction with the first aspect, the optional implementation of any one of the first to the tenth aspects of the first aspect, in the eleventh optional embodiment of the first aspect, the method further includes:

The NE1 determines, according to the first configuration information, a time-frequency resource that is available when the downlink data is sent to the first user equipment UE1 served by the first cell.

Optionally, the time-frequency resource that is available when the UE1 sends the downlink data may not include the RE that is occupied by the first RS and the RE that is occupied by the physical downlink shared channel (PDSCH) of the UE1.

In this manner, the NE1 can be instructed to avoid the time-frequency resources occupied by the first RS when receiving the data, and ensure the correctness of the data received by the UE1.

With reference to the first aspect, the optional implementation of any one of the first to eleventh aspects of the first aspect, in the twelfth optional implementation manner of the first aspect, the NE1 sends the The third configuration information is used to indicate the time-frequency resource that is available when the UE1 receives the downlink data from the NE1, and the time-frequency resource that is available when the UE1 receives the downlink data from the NE1 The first time information of the first RS used by the first configuration information is not overlapped, and the third configuration information includes subframe information of the first RS of the first configuration information, and/or a third RE indication information;

The third RE indication information includes: the first RE indication information, or,

a symbol in which the RE of the first RS indicated by the first RE indication information is located, and a subcarrier where the RE occupied by the first RS indicated by the first RE indication information is located, and each antenna port of the NE1 The type of the corresponding pilot pattern indicates at least one of the three items.

It should be noted that the third configuration information may include subframe information of the first RS and/or third RE indication information.

In a possible case, the UE1 may pre-store part of the time-frequency resources of the first RS, such as part of the first configuration information, and the third configuration information sent by the NE1 may only include the first configuration information that is missing, for example, the UE1 pre-stores The subframe of the first RS and the subcarrier where the RE occupied by the first RS is located, the NE1 may send only the symbol of the RE occupied by the first RS to the UE1, and the UE1 may be pre-stored according to the received third configuration information. Part of the first configuration information determines available time-frequency resources for receiving downlink data.

In another possible case, the UE1 may pre-store the pilot patterns corresponding to the identifiers of the various types of the pilot patterns, and the third configuration information sent by the NE1 may include the subframes of the first RS and the corresponding antenna ports. The type of the frequency pattern indicates the identifier, and the UE1 may determine the time-frequency resource of the first RS according to the type indication identifier of the pilot pattern corresponding to each antenna port.

In another possible case, the third configuration information may only indicate the time-frequency resource of the first RS related to the UE1, for example, the NE1 can learn the sub-carrier used by the UE1, and the third configuration information sent by the NE1 may include the first RS The UE may determine the RE occupied by the first RS, and the NE1 may send the third configuration information to the UE1 by using a broadcast message or UE-specific information, where the UE-specific information includes the UE. And the UE-specific information is used for sending to the selected UE, and the broadcast message does not include the identifier of the UE, and the broadcast message itself may have the subframe number, and the third configuration information may not include the subframe information of the first RS. That is, the third configuration information may include the third RE indication information; and the UE-specific information may include the sub-carriers allocated by the selected UE, and the third configuration information may not include the sub-carrier where the RE occupied by the first RS is located.

Optionally, the NE1 sends the third configuration information by using a broadcast message and/or UE-specific information. Optionally, the NE1 sends the third configuration information by using high layer signaling and/or physical layer signaling. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI. Optionally, the third configuration information includes the third RE indication information, and the RE occupied by the first RS indicated by the third RE overlaps with the RE of the physical downlink shared channel PDSCH of the UE1;

The NE1 sends the third configuration information to the UE1 by using UE-specific information, where the third configuration information includes third RE indication information, the first RS indicated by the third RE indication information, and the The RE of the PDSCH of the UE1 is the intersection of the RE of the first RS indicated by the first RE indication information and the PDSCH of the UE1.

Optionally, the third configuration information includes subframe information of the first RS and the third RE indication information, where the NE1 sends the foregoing in the third configuration information to the UE1 by using a broadcast message. The subframe information of the first RS; the NE1 sends the third RE indication information in the third configuration information to the UE1 by using UE-specific information.

In conjunction with the first aspect, the optional implementation of any one of the first to the twelfth aspects, the method further includes:

The NE1 receives the second RS sent by the NE2 according to the fifth configuration information, where the fifth configuration information includes the time-frequency resource that the NE2 sends the second RS.

With reference to the first aspect, the optional implementation of any one of the first to the thirteenth aspects of the first aspect, in the fourteenth optional implementation manner of the first aspect, the first configuration information includes The subframe information of the first RS, the fifth configuration information includes subframe information of the second RS,

The NE1 sends the first RS on a subframe determined by the subframe information of the first RS,

The NE1 receives the second RS on a subframe determined by subframe information of the second RS.

With reference to any one of the thirteenth to fourteenth alternative embodiments of the first aspect, in the fifteenth alternative implementation manner of the first aspect, the subframe information of the first RS and The intersection of the subframes determined by the subframe information of the second RS is not empty, and the front and the back segments of the subframe determined by the subframe information of the first RS respectively include an uplink slot and a downlink slot, or The preceding and following segments of the subframe determined by the subframe information of the first RS include a downlink slot and an uplink slot, respectively;

The NE1 sends the first RS on a downlink time slot of the subframe indicated by the subframe information of the first RS, where the NE1 is in the uplink of the subframe indicated by the subframe information of the first RS. The second RS is received on the slot.

In conjunction with the optional implementation of any one of the thirteenth to fifteenth aspects of the first aspect, in the sixteenth optional implementation of the first aspect, the first configuration information includes the Sub-frame information of an RS, the fifth configuration information includes subframe information of the second RS, and the subframe information of the first RS includes a period and a partial of a subframe of the first RS The subframe information of the second RS includes a period and an offset of a subframe of the second RS, and a period of the subframe of the first RS is the same as a period of a subframe of the second RS, where the first RS is The offset of the subframe is separated from the offset of the subframe of the second RS by one cycle;

The NE1 periodically sends the first RS to the NE2, and the NE1 periodically receives the second RS sent by the NE2. The definition of the period and offset of the subframe of the first RS may be similar to the definition of the period and offset of the subframe of the SRS. Alternatively, the offset can be a subframe number.

In conjunction with the optional implementation of any one of the fourteenth to sixteenth aspects of the first aspect, in the seventeenth alternative implementation of the first aspect, the NE1 is received by each antenna port of the CELL1 The second RS sent by each antenna port of the CELL2 of the NE2, and the subframe information of the second RS is determined by the NE2 according to the cell identifier of the CELL2.

With reference to any one of the fourteenth to seventeenth alternative embodiments of the first aspect, in the eighteenth optional implementation manner of the first aspect, the cell identifier of the CELL2 is an even number, The cell identifier of the CELL1 is an odd number, the subframe determined by the subframe information of the first RS is a first subframe, and the subframe determined by the subframe information of the second RS is a second subframe, and the second The subframe is a subframe of a period of one subframe of the first RS after the first subframe; or

The cell identifier of the CELL2 is an odd number, and the cell identifier of the CELL1 is an even number. The subframe determined by the subframe information of the first RS is a first subframe, and the subframe determined by the subframe information of the second RS is a subframe. For the second subframe, the second subframe is a subframe of a period of one subframe of the first RS after the first subframe.

The first subframe may be preset. For example, when the cell identifier is an odd number, the first subframe is preset as the subframe of the first RS.

With reference to the first aspect, the optional embodiment of any one of the first to the eighteenth aspects of the first aspect, in the nineteenth alternative embodiment of the first aspect, wherein the NE1 passes through each of the CELL1 The antenna port sends the first RS to each antenna port of the CELL2 of the NE2,

The subframe information of the first RS is determined by the NE1 according to the cell identifier of the CELL1.

With reference to the first aspect, the optional embodiment of any one of the first to the nineteenth aspects of the first aspect, in the nineteenth alternative embodiment of the first aspect, the CELL1 and the CELL2 Belongs to a community collaboration set.

With reference to the first aspect, any one of the first to the twentieth alternative embodiments of the first aspect, in the twenty-first alternative embodiment of the first aspect, the NE1 passes the CELL1 The antenna port sends the first RS to the antenna port of the CELL2 of the NE2, and before the NE1 sends the first RS to the NE2 according to the first configuration information, the method includes:

A second aspect of the embodiments of the present invention provides a method for transmitting a reference signal, including:

The second network device NE2 to which the second cell CELL2 belongs receives the first reference signal RS sent by the first network device NE1 to which the first cell CELL1 belongs according to the first configuration information, where the first configuration information includes Information of a time-frequency resource used by the first RS.

Optionally, the NE2 cancels the interference of the NE1 on the first uplink data according to the first RS, where the first uplink data is from a user equipment under the NE2.

With reference to the second aspect, the first optional embodiment of the second aspect, in the second optional implementation of the second aspect, the NE2 cancels the NE1 pair according to the first RS The interference of the first uplink data includes:

The NE2 obtains a first channel between the NE1 and the NE2 according to the first RS;

The NE2 obtains a first interference signal according to the first channel;

The NE2 demodulates the first uplink data according to the first interference signal.

With reference to the second aspect, the first to the second optional embodiment of the second aspect, in the third optional implementation of the second aspect, the NE2 is configured according to the first channel Before the first interference signal is obtained, it includes:

The NE2 receives the scheduling result of the first downlink data and/or the first downlink data that is sent by the NE1, where the first downlink data is sent by the NE1 to the user equipment under the NE1;

The NE2 obtains the first interference signal according to the first channel, and includes:

The NE2 restores the first interference signal according to at least one of the first downlink data and the scheduling result of the first downlink data and the first channel.

With reference to the second aspect, the first to third optional embodiments of the second aspect, in the fourth optional implementation of the second aspect, the NE2 passes the NE2 and the The X2 interface between the NEs receives the scheduling result of the first downlink data and the first downlink data.

With reference to the second aspect, the first to fourth optional embodiments of the second aspect, in the fifth optional implementation of the second aspect, the first configuration information includes:

The subframe information of the first RS, and,

The meaning of the first configuration information of the second aspect is the same as that of the first configuration information of the first aspect, and details are not described herein again.

With reference to the second aspect, the first to fifth optional embodiments of the second aspect, in the sixth optional implementation of the second aspect, the receiving, by the NE2, according to the first configuration information Before the first RS sent by NE1, it includes:

The NE2 receives the second configuration information sent by the NE1; the second configuration information includes subframe information of the first RS, and/or second RE indication information;

The second RE indication information includes: an RE location of the first RS, or a symbol in which the RE occupied by the first RS is located and a subcarrier where the RE occupied by the first RS is located, and the CELL1 Sending, by the type of the pilot pattern corresponding to each antenna port used by the first RS, at least one of the three items;

The NE2 determines the first configuration information according to the second configuration information.

The meaning of the second configuration information of the second aspect is the same as that of the second configuration information of the first aspect, and details are not described herein again.

With reference to the second aspect, the first to the sixth optional embodiment of the second aspect, in the seventh optional implementation of the second aspect, the method further includes:

The NE2 determines, according to the first configuration information, a time-frequency resource that is available when the second user equipment UE2 served by the CELL2 sends uplink data.

Optionally, the time-frequency resource that is available when the UE2 sends the uplink data may not include the RE that is occupied by the first RS and the RE that is occupied by the PUSCH of the physical uplink shared channel of the UE2.

In this manner, the NE2 can instruct the UE2 to avoid the time-frequency resources occupied by the first RS when transmitting data, and ensure the correctness of the data transmitted by the UE2.

With reference to the second aspect, the first to seventh optional embodiments of the second aspect, in the second aspect In an eight-optional implementation manner, the transmitting method further includes:

The NE2 sends the fourth configuration information to the UE2, where the fourth configuration information is used to indicate the time-frequency resource that is available when the UE2 sends the uplink data to the NE2, and is available when the UE2 sends the uplink data to the NE2. The time-frequency resource does not overlap with the time-frequency resource used by the NE1 that is sent by the first configuration information to send the first RS.

The fourth configuration information may include subframe information of the first RS in the first configuration information, and/or fourth RE indication information;

The fourth RE indication information includes: an RE that is occupied by the first RS indicated by the first RE indication information, or an RE that is occupied by the first RS indicated by the first RE indication information. And a symbol, or a subcarrier in which the RE of the first RS indicated by the first RE indication information is located, or at least one of a type indication identifier of a pilot pattern corresponding to each antenna port of the CELL1.

It should be noted that the fourth configuration information may include subframe information of the first RS and/or fourth RE indication information.

In a possible case, the UE2 may pre-store a part of the time-frequency resources of the first RS, such as a part of the first configuration information, and the fourth configuration information sent by the NE2 may only include the first configuration information that is missing, for example, the UE2 pre-stores The subframe of the first RS and the subcarrier where the RE occupied by the first RS is located, NE2 may send only the symbol of the RE occupied by the first RS to the UE2, and the UE2 may be pre-stored according to the received fourth configuration information. Part of the first configuration information determines available time-frequency resources for receiving downlink data.

In another possible case, the UE2 may pre-store the pilot patterns corresponding to the identifiers of the various types of the pilot patterns, and the fourth configuration information sent by the NE2 may include the subframes of the first RS and the corresponding antenna ports. The type of the frequency pattern indicates the identifier, and the UE2 may determine the time-frequency resource of the first RS according to the type indication identifier of the pilot pattern corresponding to each antenna port.

In another possible case, the fourth configuration information may only indicate the time-frequency resource of the first RS related to the UE2, for example, the NE2 can learn the sub-carrier used by the UE2, and the fourth configuration information sent by the NE2 may include the first The subframe of the RS and the symbol of the RE occupied by the first RS, the UE2 may determine the RE occupied by the first RS; for example, the NE2 may send the fourth configuration information to the UE2 by using a broadcast message or UE-specific information, where the UE-specific information includes The identifier of the UE, the UE-specific information is used for sending to the selected UE, and the broadcast message does not include the identifier of the UE. The broadcast message itself may have a subframe number, and the fourth configuration information may not include the subframe information of the first RS. The fourth configuration information may include the third RE indication information, and the UE-specific information may include the sub-carrier allocated by the selected UE, and the fourth configuration information may not include the sub-carrier where the RE occupied by the first RS is located. .

Optionally, the NE2 sends the third configuration information by using a broadcast message and/or UE-specific information. Optionally, the NE2 sends the third configuration information by using high layer signaling and/or physical layer signaling. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI.

Optionally, the first configuration information includes the first RE indication information, and the RE occupied by the first RS indicated by the first RE indication information overlaps with the RE of the physical uplink shared channel PUSCH of the UE2;

And the NE2 sends the fourth configuration information to the UE2 by using the UE-specific information, where the fourth configuration information includes a fourth RE indication information, where the fourth RE indication information is occupied by the first RS The RE location of the PUSCH in which the RE conflicts is the intersection of the RE location indicated by the first RE indication information and the PUSCH of the UE2.

Optionally, the fourth configuration information includes a subframe of the first RS and the fourth RE indication information, where The NE2 sends the subframe information of the first RS in the fourth configuration information to the UE2 by using a broadcast message; the NE2 sends the first part of the fourth configuration information to the UE2 by using UE-specific information. Four RE indication information.

A third aspect of the embodiments of the present invention provides a method for transmitting a reference signal, including:

The first user equipment UE1 determines a time-frequency resource available when receiving data or transmitting data.

The time-frequency resource that is available when the data is received or transmitted may not overlap with the time-frequency resource used by the first RS. The first RS is sent by the first network device NE1 to which the first cell CELL1 belongs to the second network device NE2 to which the second cell CELL2 belongs.

The user equipment can determine the available time-frequency resources when the data is transmitted or received by the user according to the third configuration information. Specifically, the user equipment can use the time-frequency resource used by the first RS to transmit data or receive data. The method provided by the present aspect can ensure the correctness of the user equipment to send data or receive data while transmitting the first RS.

Optionally, the third configuration information is used to indicate all or part of the time-frequency resources occupied by the first reference signal RS, where the first RS is the first network device NE1 to which the first cell CELL1 belongs to belong to the second cell CELL2. The serving cell of the UE1 is sent by the second network device NE2, and the serving cell of the UE1 is CELL1 or CELL2.

With reference to the third aspect, any one of the optional embodiments of the third aspect, in the second optional implementation manner of the third aspect, the determining, by the UE1, the received data or the sending according to the third configuration information Before the time-frequency resources available for data, include:

The UE1 receives the third configuration information from the NE1 or the NE2.

The third configuration information includes subframe information of the first RS, and/or third RE indication information,

The third RE indication information includes: an RE location occupied by the first RS, or

The symbol of the RE occupied by the first RS is at least one of three types of the pilot pattern of the pilot pattern in which the RE of the first RS is located and the type of the pilot pattern corresponding to the RE occupied by the first RS.

The meaning of the third configuration information of the third aspect is the same as that of the third configuration information of the first aspect, and details are not described herein again.

Optionally, the UE1 receives a broadcast message and/or UE-specific information, where the broadcast message and/or UE-specific information includes the third configuration information. Optionally, the UE1 receives high layer signaling and/or physical layer signaling, where the high layer signaling and/or physical layer signaling includes the third configuration information. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI.

With reference to the third aspect, the first to the second optional embodiment of the third aspect, in the third optional implementation manner of the third aspect, the serving cell of the UE1 is CELL1, The third configuration information is sent by the NE1, and the UE1 determines, according to the third configuration information, time-frequency resources that are available when receiving data or transmitting data, including:

The UE1 determines, according to the third configuration information, a time-frequency resource available when receiving data.

With reference to the third aspect, the first to third optional embodiments of the third aspect, in the fourth optional implementation of the third aspect, the third configuration information includes the The third RE indicates the information, and the RE occupied by the first RS indicated by the third RE overlaps with the RE of the physical downlink shared channel PDSCH of the UE1,

The UE1 receives the third configuration information by using the UE-specific information sent by the NE1, and the time-frequency resource that is available when the UE1 determines the received data is that the PDSCH of the UE1 is occupied by the first RS. RE not Overlapping REs.

With reference to the third aspect, the first to the second optional embodiment of the third aspect, in the fifth optional implementation manner of the third aspect, the serving cell of the UE1 is CELL2, The third configuration information is sent by the NE2, and the UE1 determines, according to the third configuration information, time-frequency resources that are available when receiving data or transmitting data, including:

The UE1 determines, according to the third configuration information, a time-frequency resource available when data is transmitted.

With reference to the third aspect, the first, second, and fifth optional embodiments of the third aspect, in the sixth optional implementation manner of the third aspect, the third configuration information The third RE indication information is included, and the RE occupied by the first RS indicated by the third RE indication information overlaps with the RE of the physical uplink shared channel PUSCH of the UE1;

And the UE1 receives the third configuration information by using the UE-specific information that is sent by the NE2, and the time-frequency resource that is available when the UE1 determines the data to be sent, is the PUSCH of the UE1 and the first RS. The REs that occupy the RE do not overlap.

In a fourth aspect, an embodiment of the present invention provides a transmission device for a reference signal, where the device may be a network device, and the network device has a function of implementing behavior of the first network device in the foregoing method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, an embodiment of the present invention provides a transmission device for a reference signal, where the device may be a network device, and the network device has a function of implementing the behavior of the second network device in the actual method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a sixth aspect, an embodiment of the present invention provides a transmission device for a reference signal, where the device may be a user equipment, and the user equipment has a function of realizing the behavior of the user equipment in the actual method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a seventh aspect, an embodiment of the present invention provides a network device, where the network device has a function of implementing behavior of a first network device in the foregoing method. The structure of the network device includes a wireless communication interface, such as a transmitter and a receiver, and a network communication interface. The wireless communication interface is configured to support communication between the network device and the network device and the user equipment, and the transmitter is configured to send information or data involved in the foregoing method to the network device and the user equipment, where the receiver is used to support the network. The device receives information or data sent by the network device and the user equipment involved in the foregoing method, and the network communication interface is used to support communication between the network device and the network device. In a possible implementation, a demodulator and/or a decoder may also be included in the structure of the network device. The demodulator is configured to demodulate or despread and demodulate information or data involved in the above method; the decoder is configured to decode or descramble information or data involved in the above method And decoding. In a possible implementation manner, a processor may also be included in the structure of the network device. The processor is configured to support a network device to perform a corresponding function of the above methods. It can be understood that when the demodulator and/or decoder are not included in the structure of the network device, the functions of the demodulator and/or decoder may also be at the receiver or the Completed in the processor. The network device can also include a memory for coupling with the processor to store program instructions and data necessary for the network device. The network device may further include an interface unit for supporting communication with other network devices, such as a core network segment. Communication between points.

In an eighth aspect, an embodiment of the present invention provides a network device, where the network device has a function of implementing behavior of a second network device in the foregoing method. The structure of the network device includes a wireless communication interface, such as a transmitter and a receiver, and a network communication interface. The wireless communication interface is configured to support communication between the network device and the network device and the user equipment, and the transmitter is configured to send information or data involved in the foregoing method to the network device and the user equipment, where the receiver is used to support the network. The device receives information or data sent by the network device and the user equipment involved in the foregoing method, and the network communication interface is used to support communication between the network device and the network device. In a possible implementation, a demodulator and/or a decoder may also be included in the structure of the network device. The demodulator is configured to demodulate or despread and demodulate information or data involved in the above method; the decoder is configured to decode or descramble information or data involved in the above method And decoding. In a possible implementation manner, a processor may also be included in the structure of the network device. The processor is configured to support a network device to perform a corresponding function of the above methods. It can be understood that when the demodulator and/or decoder are not included in the structure of the network device, the functions of the demodulator and/or decoder may also be at the receiver or the Completed in the processor. The network device can also include a memory for coupling with the processor to store program instructions and data necessary for the network device. The network device may also include an interface unit for supporting communication with other network devices, such as communication with a core network node.

In a ninth aspect, an embodiment of the present invention provides a user equipment, where the structure of the user equipment includes a transceiver, such as a receiver and a transmitter. The transmitter is configured to support the user equipment to send information or data involved in the foregoing method to the network device, and the receiver is configured to support the user equipment to receive information or data sent by the network device involved in the foregoing method. In a possible implementation, an encoder and/or a modulator may also be included in the structure of the user equipment. The encoder is used to encode or encode and scramble the information or data involved in the above method; the modulator is used to modulate or modulate and spread the information or data involved in the above method. In a possible implementation, the user equipment may further include a processor. The processor is configured to support a user device to perform a corresponding function in the above method. It can be understood that when the modulator and/or the encoder are not included in the structure of the user equipment, the functions of the modulator and/or the encoder may also be in the transmitter or the processor. carry out. The user equipment may also include a memory for coupling with the processor to store program instructions and data necessary for the user equipment.

According to a tenth aspect, an embodiment of the present invention provides a communication system, where the system includes the network device and the user equipment in the foregoing aspect.

In an eleventh aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the network device, including a program designed to perform the above aspects.

In a twelfth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the user equipment, including a program designed to perform the above aspects.

The method for transmitting the reference signal provided by the embodiment of the present invention sends the first reference information to the second network device to which the second cell belongs, by using the first network device to which the first cell belongs, so that the second network device can be based on the first reference signal. The interference of the first network device on the uplink data of the user equipment under the second network device is eliminated.

DRAWINGS

FIG. 1 is a schematic flowchart diagram of Embodiment 1 of a method for transmitting a reference signal according to an embodiment of the present disclosure;

2 is a schematic flowchart of an interaction process of an optional implementation manner in which the S102NE2 cancels the interference of the first uplink data by the first RS according to the first RS in the method shown in FIG.

3 is a flowchart of an optional implementation manner of acquiring first configuration information by NE2 in the method shown in FIG. 1;

FIG. 4 is a schematic flowchart diagram of a first optional implementation manner of Embodiment 2 of a method for transmitting a reference signal according to an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart diagram of a second optional implementation manner of Embodiment 2 of a method for transmitting a reference signal according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart diagram of a first optional implementation manner of Embodiment 3 of a method for transmitting a reference signal according to an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart diagram of a second optional implementation manner of Embodiment 3 of a method for transmitting a reference signal according to an embodiment of the present disclosure;

8 is a schematic diagram of a first alternative embodiment of first RE indication information of first configuration information;

9 is a schematic diagram of a second optional implementation manner of first RE indication information of the first configuration information;

10 is a schematic diagram of a third alternative embodiment of the first RE indication information of the first configuration information;

11 is a schematic diagram of a fourth alternative embodiment of the first RE indication information of the first configuration information;

12 is a first partial schematic diagram of a fifth alternative embodiment of the first RE indication information of the first configuration information;

13 is a schematic diagram of a second part of a fifth alternative embodiment of the first RE indication information of the first configuration information;

14 is a schematic diagram of a sixth alternative embodiment of the first RE indication information of the first configuration information;

15 is a schematic diagram of a scenario of an optional implementation manner of the first configuration information;

16 is a schematic diagram of a scenario of still another optional implementation manner of the first configuration information;

FIG. 17 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of still another network device according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 20 is a schematic structural diagram of an optional network device according to an embodiment of the present disclosure;

FIG. 21 is a schematic structural diagram of another network device according to an embodiment of the present disclosure;

FIG. 22 is a schematic structural diagram of an optional user equipment according to an embodiment of the present invention.

detailed description

In the communication system, as various communication technologies increase the utilization of spectrum resources, the interference problem is also becoming more and more significant. For example, in an LTE system, when the frequency bands configured by the adjacent cells are the same, the downlink frequency band of one cell may overlap with the uplink frequency band of another cell, and the uplink signal of the first cell is uplinked to the uplink signal of the second cell. Interference. For example, for a cell in the TDD mode, although the uplink and downlink data channels can be separated by different time slots by using a subframe ratio, when the uplink and downlink subframe ratios of the cells of the neighboring cell are different from the local cell, the cell The signal transmitted on the downlink time slot still interferes with the signal transmitted on the uplink time slot of the neighboring cell. For example, a dynamic TDD technology that is more advanced than the conventional TDD technology can flexibly and quickly switch the time slot configuration of the cell according to the uplink and downlink traffic load conditions of the network, and improve the throughput of the uplink and downlink services of the cell by matching the specific service requirements of the cell. the amount. However, the introduction of dynamic TDD technology also inevitably introduces uplink and downlink interference between different cells. This makes the inter-cell interference problem between cells more serious. Only by effectively solving this problem can the dynamic and efficient performance advantages of dynamic TDD technology be fully utilized.

For the interference scenario in the above various networking configurations, the embodiment of the present invention provides a method for transmitting a reference signal, which is used to eliminate interference, thereby improving the correctness of the received data.

FIG. 1 is a schematic flowchart diagram of Embodiment 1 of a method for transmitting a reference signal according to an embodiment of the present invention.

The executor of the embodiment of the present invention may include: a first network device NE1, and a second network device NE2. In the embodiment of the present invention, the network device includes a wireless interface that communicates with the user equipment, so that the user equipment performs wireless communication through the network device. The network device may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station (eNB) in an LTE system. Or eNodeB), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, or a network in a future 5G network. A side device or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.

As shown in FIG. 1, the method of the embodiment of the present invention may include:

S101: The NE1 sends the first reference signal RS to the NE2 according to the first configuration information.

In various embodiments of the present invention, NE1 and NE2 may be base station type homogeneous networks or network devices in a heterogeneous network. For example, NE1 and NE2 may both be micro base stations or macro base stations. They are a micro base station and a macro base station, respectively. Optionally, NE1 and NE2 may be the same base station or different base stations.

The first configuration information includes information used to indicate that the NE1 sends the time-frequency resource used by the first RS to the NE2. The time-frequency resource may include at least one of a time domain resource, a frequency domain resource, and a spatial domain resource. For example, if NE1 and NE2 are LTE base stations, the time-frequency resource indicated by the first configuration information may be the subframe information of the first RS, and/or the first RE indication information indicating the RE occupied by the first RS. . Optionally, the first configuration information may further include a scrambling code, where the scrambling code may be used by the NE1 to perform scrambling on the first RS. Optionally, the scrambling code can be an identifier of NE1.

Optionally, NE1 may send the first RS to an antenna port of the second cell CELL2 of NE2 through an antenna port of the first cell CELL1.

It should be noted that CELL1 of NE1 and CELL2 of NE2 may belong to the same collaboration set, and subframes of each network device in one collaboration set are synchronized. For example, the subframes may be aligned periodically such that the start positions of the subframes having the same subframe number in each network device are the same.

It should be noted that NE1 can send the first RS to NE2 through the antenna of NE1, and NE2 receives the first RS through the antenna device of NE2. That is, the first RS experiences the first channel between NE1 and NE2. Since the TDD system channel has channel reciprocity, the channel transmitted by NE2 to NE1 can be estimated according to the channel transmitted by N1 to NE2. Therefore, the first channel between NE1 and NE2 can be estimated according to the first RS.

Optionally, NE1 may send the first RS to an antenna port of the second cell CELL2 of the NE2 by using an antenna port of the first cell CELL1, and the interference eliminated by the first RS by the NE2 is a downlink channel pair CELL2 of the CELL1. Interference generated by the upstream channel.

S102: The NE2 cancels the interference of the NE1 on the first uplink data according to the first RS.

The first uplink data is from the user equipment under the NE2.

It should be noted that, in the embodiment of the present invention, the user equipment may be various types of terminal equipment, and the terminal equipment may be mobile or fixed. The terminal device may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent. Or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or terminal devices in future evolved PLMNs, and the like.

As shown in FIG. 2, on the basis of the transmission method shown in FIG. 1, S102 in the transmission method provided in the embodiment of the present invention may include S201-S203.

S201: NE2 restores the first channel between NE1 and NE2 according to the first RS.

S202: The NE2 obtains the first interference signal according to at least one of the first downlink data and the scheduling result of the first downlink data, and the first channel.

The scheduling result of the first downlink data and/or the first downlink data may be sent by NE1 to NE2 before S202, or may be a scheduling result of predefined downlink data and downlink data. The first interference signal includes an interference signal of the downlink data of the NE1 to the first uplink data.

S203: The NE2 demodulates the first uplink data according to the first interference signal.

When the NE2 demodulates the first uplink data, the first interference signal may be used to remove the interference signal in the received signal stream of the first uplink data, thereby improving the correctness of the NE2 to demodulate the first uplink data.

Optionally, before S202, the method may include:

S204: NE1 sends a scheduling result of the first downlink data and/or the first downlink data to NE2.

The first downlink data is sent by the NE1 to the user equipment of the NE1, and the NE1 may send the first downlink data and/or the first downlink to the NE2 through a wired data channel such as an X2 interface or a network management interface. The scheduling result of the row data, optionally, the NE1 may also send the scheduling result of the first downlink data and/or the first downlink data through the wireless data channel. Optionally, NE1 and NE2 may be the same network device, and the NE2 may obtain the scheduling result of the first downlink data and the first downlink data by using a data channel between the internal modules. In this case, those skilled in the art. It should be clear that S201 is not a step that must be performed.

It should be noted that S201 to S203 are an alternative manner in which NE2 cancels the interference of NE1 on the first uplink data, and other optional manners are described below.

It should be noted that, for a cell in the TDD mode, if the frequency ranges of two adjacent or same coverage cells are the same but the uplink and downlink subframe ratios of the cells are different, for example, the downlink time slot of CELL1 is exactly the uplink time slot of CELL2. Then, when there is downlink data on the downlink time slot of CELL1, it will interfere with the signal on the uplink time slot of CELL2. If the uplink and downlink subframe ratios of the neighboring cells are restricted, the resources in one transmission direction may be wasted and the resources in the other transmission direction may be insufficient for the cells with different loads. Therefore, the uplink and downlink subframe ratios are The interference generated by the inconsistency is usually not solved by coordinating the uplink and downlink subframe ratio of the neighboring cell. In the embodiment of the present invention, the NE1 sends the first RS to the antenna port of the second cell CELL2 of the NE2 through the antenna port of the first cell CELL1. An RS experiences the channel between CELL1 of NE1 and CELL2 of NE2, then NE2 can eliminate this situation according to the first RS. In the case, the downlink data of CELL1 under NE1 interferes with the uplink data of NE2.

Further, the method for transmitting a reference signal in the embodiment of the present invention is also applicable to a scenario in which a TDD cell adopts a dynamic cell uplink-downlink subframe ratio. In this scenario, the uplink and downlink subframe ratio of the cell of the TDD cell is based on the load of the cell. The dynamic adjustment is performed automatically. In this case, the neighboring TDD cells cannot ensure that the uplink and downlink subframe ratios of the neighboring cells are the same. Therefore, interference between adjacent cells is inevitable, and the present invention is implemented. The method for transmitting the reference signal provided by the example can also eliminate the interference in the uplink and downlink subframe matching scenario of the dynamically configured cell, and does not require manual intervention at all.

Optionally, the embodiment of the present invention further provides a method for starting to transmit a reference signal, where the ratio of the downlink subframes of the cell in the cell or the neighboring cell is changed, and the ratio of the uplink and downlink subframes of the cell to the neighboring cell is matched. When the interference is inconsistent, the NE1 restarts the method of sending the first RS for the NE2 to cancel the interference from the NE1. At the same time, it is also possible to prevent the first RS from occupying more time-frequency resources when the interference is small. Specifically, before S101, the method may further include: NE1 detects that the uplink and downlink subframe ratios of CELL1 and CELL2 are inconsistent.

Alternatively, NE1 may detect that the uplink subframe ratio of CELL1 and CELL2 is inconsistent. For example, NE2 may periodically send the uplink and downlink subframe ratio of the cell under NE2 to NE1, or NE1 also You can use the NMS to initiate an inquiry message to NE2 to obtain the uplink and downlink subframe ratio of CELL2. The embodiments of the present invention are not limited. 3 is a schematic flow chart of an alternative embodiment of a method for transmitting a reference signal shown in FIG. 1.

3 is a flow chart of an optional implementation manner in which the NE2 obtains the first configuration information in the method shown in FIG.

On the basis of the various embodiments shown in FIG. 1 to FIG. 2, the embodiment of the present invention further provides two ways for NE2 to obtain the first configuration information.

Optionally, in the first mode of acquiring the first configuration information by the NE2, the NE2 may pre-store the first configuration information, and receive the first RS according to the time-frequency resource indicated by the first configuration information.

Optionally, in the manner that the second NE2 obtains the first configuration information, the NE2 may pre-store part of the first configuration information, or may not store the first configuration information, and the NE1 needs the NE2 before sending the first RS. The configuration information of the first RS is sent to the NE2 to indicate that the NE2 receives the first RS according to the time-frequency resource occupied by the first RS indicated by the first configuration information.

Specifically, referring to FIG. 3, before S101, the method may further include:

S301: NE1 sends second configuration information to NE2.

S302: The NE2 determines the first configuration information according to the second configuration information.

The NE2 may determine the first configuration information according to the second configuration information, that is, receive the time-frequency resource of the first RS. Optionally, if the NE2 pre-stores part of the configuration information, the second configuration information only needs to include a part of the first configuration information that is not stored by the NE2. Those skilled in the art will appreciate that S301 and S302 are not necessarily steps that must be performed.

Optionally, if the NE1 needs to send the first RS to the multiple network devices, the NE1 may send the first RS in a broadcast manner, that is, the first configuration information used by the first network to send the same to the different network devices is the same, only the first RS. The passages are different.

The method for transmitting a reference signal provided by the embodiment of the present invention sends a reference signal to the second network device by using the first network device, where the reference signal experiences a channel between the first network device and the second network device, so that the second network device can The interference from the first network device to the uplink data sent by the user equipment under the second network device is eliminated according to the reference signal, thereby improving the transmission accuracy of the uplink data.

Optionally, in order to prevent the first RS from transmitting the downlink data of the user equipment in the NE1, The uplink data of the user equipment in the NE2, the user equipment UE may determine the time-frequency resource available when receiving the data or transmitting the data, and the time-frequency resource available when the received data or the data is sent is not the time-frequency resource used by the first RS. The first RS is sent by the first network device NE1 to which the first cell CELL1 belongs to the second network device NE2 to which the second cell CELL2 belongs. Optionally, the user equipment may include UE1 under CELL1 and UE2 under CELL2. Optionally, UE1 and UE2 can also be moved to CELL2 and CELL1 respectively.

FIG. 4 is a schematic flowchart diagram of a first optional implementation manner of Embodiment 2 of a method for transmitting a reference signal according to an embodiment of the present invention. FIG. 5 is a schematic flowchart diagram of a second optional implementation manner of Embodiment 2 of a method for transmitting a reference signal according to an embodiment of the present invention.

On the basis of the foregoing embodiments of FIG. 1 to FIG. 3, in addition, in order to prevent the NE1 from transmitting the first RS to affect the downlink data of the user equipment in the NE1, the embodiment of the present invention further provides two guarantees for downlink data transmission of the UE. An alternative implementation.

The executor of the embodiment of the present invention includes a user equipment UE in addition to NE1 and NE2 described above. For example, the serving cell of the first user equipment UE1 may belong to NE1. Optionally, the serving cell of the UE1 may also be a cell that belongs to the NE2 but is adjacent to the cell under the NE1.

Referring to FIG. 4, in an optional implementation manner of ensuring downlink data transmission of the UE, the steps of this embodiment may include:

S401: The UE1 determines, according to the third configuration information, an available time-frequency resource when receiving data.

It should be noted that the UE1 may also determine the available time-frequency resources when receiving data according to the configuration information of the first RS related to the UE1, instead of all the first configuration information, that is, the UE1 receives the downlink (DownLink, DL for short). The time-frequency resource of the data, the third configuration information may be the same as the first configuration information, or may be the time-frequency resource related to the UE1 in the first configuration information. For example, the UE1 may consider only the time-frequency resource used by the first RS and the UE1. The subcarriers or symbols with the same time-frequency resources are used. Optionally, the manner in which the UE1 acquires the configuration information of the first RS related to the UE1 in the first configuration information is the same as the manner in which the UE1 acquires the third configuration information that is the same as the first configuration information.

In this embodiment, the manner in which the UE1 obtains the third configuration information may be similar to the manner in which the NE2 obtains the first configuration information. For example, the UE1 may store all the third configuration information in advance, or may store part of the first configuration information or not. The first configuration information is sent by the NE1 to the UE2 for the configuration information of the first RS required by the UE1 before the first RS is sent. Specifically, before S401, the method may further include:

S410: NE1 sends third configuration information to UE1.

The third configuration information is used to indicate the time-frequency resource that is available when the UE1 receives the downlink data, and the time-frequency resource that is available when the UE1 receives the downlink data from the NE1 and the NE1 sending station indicated by the first configuration information. The time-frequency resources used by the first RS do not overlap.

Optionally, NE1 may send the third configuration information by using physical layer signaling. For example, NE1 transmits the third configuration information through the data control indication information DCI.

Optionally, the NE1 may send the third configuration information by using a radio resource control RRC message. If the RRC message is used to send the third configuration information, the UE may not send the subframe of the first RS, and the UE may obtain the corresponding subframe in the RRC message, thereby saving the overhead of message transmission. Further, NE1 may send the third configuration information by using high layer signaling. Optionally, the high layer signaling may be, for example, a broadcast message or UE specific information.

Specifically, the NE1 may send the third configuration information by using a broadcast message and/or UE-specific information. For example, NE1 may pass the subframe information of the first RS and the RE indication information of the first RS through a broadcast message and a UE-specific letter, respectively. For example, the UE may send the subframe information of the first RS and the RE indication information of the first RS to the UE1 by using a broadcast message, or the NE1 may use the subframe information of the first RS. And the RE indication information of the first RS is sent to the UE1 by using UE-specific information.

Optionally, the NE1 may also send the third configuration information to the UE1 by using a primary system information block MIB message or a system information block SIB message.

It should be noted that the UE-specific information usually includes the identifier of the specified UE, that is, the UE-specific information is sent to the part of the UE, and the broadcast message is not limited to the UE identifier, that is, it can be sent to all UEs in the cell. When the third configuration information is sent by using the UE-specific information, the third configuration information may include only the symbol in which the RE occupied by the first RS is located, and the UE1 may determine the available time-frequency resources.

Optionally, if the third configuration information includes the third RE indication information, and the RE occupied by the first RS indicated by the third RE overlaps with the RE of the physical downlink shared channel PDSCH of the UE1,

The UE1 receives the third configuration information that is sent by the NE1, and the time-frequency resource that is available when the UE1 determines the received data is that the RE of the UE1 and the RE occupied by the first RS are not Overlapping REs.

For example, UE1 deducts the RE location occupied by the first RS in the PDSCH.

It should be noted that if the UE1 stores the first configuration information in advance, S410 is not a mandatory step.

In this embodiment, the UE1 may receive data according to the time-frequency resource of the received downlink data indicated when the downlink data is scheduled by the NE1, so as to avoid erroneously treating the data on the time-frequency resource occupied by the first RS as downlink data processing. That is to say, in this embodiment, when the first RS is sent by NE1 to NE2, UE1 can still correctly receive downlink data.

Referring to FIG. 5, in an optional implementation manner of ensuring downlink data transmission of the UE, before the downlink data is sent by the UE1 to the UE1, the method may include:

S501: The NE1 determines, according to the first configuration information, a time-frequency resource that is available when the downlink data is sent to the first user equipment UE1.

In this embodiment, the UE1 may receive data according to the time-frequency resource of the received downlink data indicated when the downlink data is scheduled by the NE1, without special processing for the first RS in the downlink data, that is, the processing of the UE1 is completely complete with the existing UE. the same. That is to say, in this embodiment, the improvement of the network device can be supported without replacing the UE.

FIG. 6 is a schematic flowchart diagram of a first optional implementation manner of Embodiment 3 of a method for transmitting a reference signal according to an embodiment of the present invention. FIG. 7 is a schematic flowchart diagram of a second optional implementation manner of Embodiment 3 of a method for transmitting a reference signal according to an embodiment of the present invention.

On the basis of FIG. 1 to FIG. 5 and the foregoing embodiments, in order to prevent the user equipment in the NE2 from transmitting uplink data and affecting the NE2 to receive the first RS, the embodiment of the present invention further provides two types of uplink data transmission for the UE. Selected implementation. The executor of the embodiment of the present invention may further include a user equipment UE in addition to NE1 and NE2 described above. For example, the serving cell of the second user equipment UE2 may belong to NE2. Optionally, the serving cell of the UE2 may also be a cell that belongs to the NE1 but is adjacent to the cell under the NE2.

Referring to FIG. 6, in an optional implementation manner of ensuring uplink data transmission of the UE, the steps of this embodiment may include:

S601: The UE2 determines, according to the fourth configuration information, an available time-frequency resource when the data is sent.

The NE1 sends the first RS to the NE2 to occupy the time-frequency resource that the NE2 receives the data sent by the UE2, that is, The UE2 sends the time-frequency resources of the Uplink (UL) data. Therefore, the UE2 needs to determine the time-frequency resources available when the data is transmitted according to the time-frequency resources occupied by the first RS, so as to avoid conflicts in the transmitted data.

It should be noted that the UE2 may also determine the available time-frequency resources when receiving data according to the configuration information of the first RS related to the UE2, instead of all the first configuration information, that is, the fourth configuration information may be the first The configuration information is the same, and may be the time-frequency resource related to the UE2 in the first configuration information. For example, the UE2 may consider only the time-frequency resource used by the first RS and the time-frequency resource with the same sub-carrier or symbol used by the UE2. The manner in which the UE 2 acquires the configuration information of the first RS related to the UE 2 is the same as the manner in which the UE 2 acquires the fourth configuration information that is the same as the first configuration information.

In this embodiment, the manner in which the UE 2 obtains the fourth configuration information may be similar to the manner in which the NE2 obtains the first configuration information. For example, the UE 2 may store all the fourth configuration information in advance, or may store part of the first configuration information or not. After the first configuration information is obtained by the NE2, for example, after the NE1 sends the second configuration information to the NE2, the NE2 sends the configuration information of the first RS required by the UE2 to the UE2. Specifically, before S601, the method may further include:

S610: NE2 sends fourth configuration information to UE2.

The fourth configuration information is used to indicate that the UE2 sends the available time-frequency resources of the uplink data to the NE2, and the time-frequency resources available when the UE2 sends the uplink data to the NE2 and the NE1 indicated by the first configuration information. The time-frequency resources used for transmitting the first RS do not overlap.

It should be noted that if the UE 2 stores the fourth configuration information in advance, S610 is not a mandatory step.

Optionally, NE2 may send the fourth configuration information by using physical layer signaling. For example, NE2 transmits the fourth configuration information through the data control indication information DCI.

Optionally, NE2 may send fourth configuration information by using a radio resource control RRC message. If the RRC message is used to send the fourth configuration information, the UE may not send the subframe of the first RS, and the UE may obtain the corresponding subframe in the RRC message, thereby saving the overhead of message transmission. Further, the NE2 can send the fourth configuration information by using the high layer signaling. Optionally, the high layer signaling may be, for example, a broadcast message or UE specific information.

Specifically, the NE2 may send the fourth configuration information by using a broadcast message and/or UE-specific information. For example, NE2 may send the subframe information of the first RS and the RE indication information of the first RS to the UE2 through the broadcast message and the UE-specific information, respectively. For example, the NE2 may use the subframe information of the first RS and the first The RE indication information of the RS is sent to the UE2 by using a broadcast message, or the NE2 may send the subframe information of the first RS and the RE indication information of the first RS to the UE2 through the UE-specific information.

Optionally, the NE2 may also send the fourth configuration information to the UE2 by using a primary system information block MIB message or a system information block SIB message.

It should be noted that the UE-specific information usually includes the identifier of the specified UE, that is, the UE-specific information is sent to the part of the UE, and the broadcast message is not limited to the UE identifier, that is, it can be sent to all UEs in the cell. When the fourth configuration information is sent by using the UE-specific information, since the sub-carrier in which the UE is located may be determined, the fourth configuration information may only include the symbol in which the RE occupied by the first RS is located, and the UE2 may determine the available time-frequency resource.

Optionally, if the fourth configuration information includes the fourth RE indication information, and the RE occupied by the first RS indicated by the fourth RE overlaps with the RE of the physical uplink shared channel PUSCH of the UE2,

The UE2 receives the fourth configuration information that is sent by the NE2; the time-frequency resource that is available when the UE2 determines the data to be sent is that the RE of the UE2 and the RE occupied by the first RS are not Overlapping REs.

In this implementation manner, the UE2 may send data according to the time-frequency resource of the uplink data that is indicated when the uplink data is scheduled by the NE2, and avoid using the time-frequency resource occupied by the first RS to send the uplink data, thereby preventing the NE2 from mistaking the UE2 in the first. The uplink data sent on the time-frequency resource occupied by the RS is treated as the first RS. That is to say, in this embodiment, when the first RS is sent by NE1 to NE2, the UE can still correctly receive downlink data.

Referring to FIG. 7, in an optional implementation manner of ensuring downlink data transmission of the UE, before the UE2 sends the uplink data, the method may include:

S701: The NE2 determines, according to the first configuration information, a time-frequency resource that is available when the UE2 sends the uplink data.

In this embodiment, the UE2 may send data according to the time-frequency resource of the uplink data that is indicated when the uplink data is scheduled by the NE2, so that the UE2 does not need to consider the conflict with the time-frequency resource occupied by the first RS when the uplink data is sent, that is, the UE2 The processing is exactly the same as the existing UE. That is to say, in this embodiment, the improvement of the network device can be supported without replacing the UE.

Alternatively, the UE1 may also perform the method performed by the UE2 shown in FIG. 6 to FIG. 7 above. Correspondingly, the UE2 may also perform the method performed by the UE1 shown in FIG. 4 to FIG. 5 above.

Based on the foregoing various embodiments shown in FIG. 1 to FIG. 7 , an embodiment of the present invention further provides an optional implementation manner of six first configuration information. The NE1 may transmit the first RS by using one or more of the optional embodiments of the following first configuration information.

In an optional implementation manner of the first configuration information, the CELL1 of the NE1 may include at least one antenna port, and the first RE indication information of the first configuration information may include:

And a pilot pattern corresponding to each antenna port of the NE1, where the pilot pattern is used to indicate that each antenna port of the NE1 sends an RE position of the first RS.

The RE position of each antenna port that sends the first RS may correspond to one pilot pattern, or the RE position of each antenna port that sends the first RS may form a pilot pattern. For example, the CELL1 of the NE1 may include one or more antenna ports, and the first RE indication information may be one pilot pattern or multiple pilot patterns, and each antenna port may correspond to one pilot pattern. Each pilot pattern can include at least one RE location. Optionally, the pilot patterns of more than one of the plurality of antenna ports may be the same.

FIG. 8 is a schematic diagram of a first alternative embodiment of first RE indication information of the first configuration information. FIG. 9 is a schematic diagram of a second alternative embodiment of the first RE indication information of the first configuration information. FIG. 10 is a schematic diagram of a third alternative embodiment of the first RE indication information of the first configuration information. 11 is a first partial schematic diagram of a fourth alternative embodiment of the first RE indication information of the first configuration information. 12 is a second partial schematic diagram of a fourth alternative embodiment of the first RE indication information of the first configuration information. FIG. 13 is a schematic diagram of a second part of a fifth alternative embodiment of the first RE indication information of the first configuration information. 14 is a schematic diagram of a sixth alternative embodiment of the first RE indication information of the first configuration information.

Optionally, if the CELL1 of the NE1 may include multiple antenna ports, the RE position of the first RS sent on each antenna port may be a group of REs with the same symbol but different subcarriers, as shown in FIG. It is a group of REs with the same subcarriers but different symbols, as shown in Figure 9. It should be noted that, where R ₀ , R ₁ , R ₂ , and R ₃ are REs of the CRS, NE1 may be eNB1, and NE2 may be eNB2, and the RE position of the first RS may avoid the RE position that conflicts with the CRS. Optionally, the RE location of the first RS may also avoid the RE location that conflicts with the uplink DMRS and/or the downlink DMRS. Referring to FIG. 10 . When the first RE indication information in the first configuration information indicates that the RE locations of the first RS are located in the same subcarrier, or are located in the same symbol, the NE1 notifies the third RE indication information carried in the third configuration information of the UE1. Instead of specifying a specific RE location, only the carrier or the symbol in which the first RS is located may be indicated to save the overhead of message transmission. Similarly, NE2 notifies the fourth RE indication information carried in the fourth configuration information of the UE2, and the second RE indication information carried in the second configuration information of the NE1 notification NE2 may also indicate only the carrier or the location where the first RS is located. Symbol to save the overhead of message delivery.

Optionally, the RE location of the first RS sent on each antenna port may be a pilot pattern composed of other predefined RE locations. Refer to Figure 11. The NE1 can have four antenna ports, wherein R ₃₁ , R ₃₂ R ₃₃ , and R ₃₄ are the RE positions occupied by the respective antenna ports of the first optional first RS, and R ₃₅ , R ₃₆ R ₃₇ , and R ₃₈ can be The RE position occupied by each antenna port of the second optional first RS. In an alternative scheme with a compatible pilot pattern, the pilot pattern corresponding to each antenna port may be a channel state information reference signal (CSI-RS) optional pilot pattern set. One.

Specifically, a plurality of optional pilot patterns of the CSI-RS are provided in the protocol, and the first RS of the embodiment of the present invention may select any one of the pilot patterns. The second configuration information, the third configuration information, and the fourth configuration information may include only the type indication identifier of the pilot pattern of the CSI-RS, and the RE position occupied by the first RS indicated in the first RE indication information may be determined. . Moreover, since the first RS is transmitted by using the pilot pattern of the CSI-RS, the existing processing procedure of the UE does not use the time-frequency resource occupied by the CSI-RS to receive or transmit data, and therefore, any pilot using the CSI-RS is adopted. The pattern is used as the pilot pattern of the first RS, so that the UE can support the improvement of the network device without changing the processing flow.

Optionally, the RE positions of the first RSs corresponding to different antenna ports in the pilot pattern may be the same, and the NE1 may adopt a code division manner, and the RE position of the first RS indicated by the pilot pattern is first from different antenna ports. The RS is sent to NE2.

Optionally, in the second configuration information, the third configuration information, and the fourth configuration information, only the type of the pilot pattern may be notified, where the type of the pilot pattern may be the number of antenna ports, and the network device or user of the receiver The device may determine the first configuration information according to the type of the pilot pattern. Wherein, the type of the pilot pattern refers to a parameter included in the type indication flag of the pilot pattern determined by determining a pilot pattern.

When the number of antenna ports corresponding to the base station to which the first cell of the first RS is sent is greater than 1, the first RS may be sent by using a different pilot pattern on each antenna port, and the type indication of the pilot pattern may be A pilot pattern used to transmit the first RS for different antenna port numbers.

The type indication identifier of the pilot pattern may include one or more of a type of reference signal, an antenna port number, an antenna port number, and a pilot pattern index.

The pilot pattern index is used to indicate one of the one or more pilot patterns.

Optionally, the type of the reference signal may include an inter-cell reference signal, a CSI-RS, a DMRS, an SRS, and the like. Optionally, the CSI-RS, the DMRS, and the SRS may respectively correspond to a set of selectable pilot patterns, and may adopt one or more of an antenna port number, an antenna port number, and a pilot pattern index for each pilot pattern. Mark it. Optionally, when the first cell and the second cell pre-arrange the type of the reference signal used, the type indication identifier of the pilot pattern may not include the type of the reference signal, but only the number of antenna ports and the antenna port number. One or more of the pilot pattern indexes.

Optionally, when the type of the reference signal is CSI-RS, the type indication identifier of the pilot pattern may include an antenna port number and a pilot pattern index, that is, the antenna port number is optional. The NE and the UE may determine the antenna port number according to the number of antenna ports. For example, the antenna port number of the corresponding antenna port number is selected in a predetermined order from the set of antenna port numbers of the optional pilot pattern according to the number of antenna ports. For example, in LTE, an antenna port that transmits a CSI-RS optional pilot pattern The number can be {15,16,17,18,19,20,21,22}. When the number of antenna ports used for transmitting CSI-RS is 1, the corresponding antenna port number is 15, when transmitting CSI-RS. When the number of antenna ports is 2, the corresponding antenna port number is {15, 16}. When the number of antenna ports for transmitting CSI-RS is 4, the corresponding antenna port number is {15, 16, 17, 18}. analogy. Therefore, the type indication indicator of the pilot pattern may only include the number of antenna ports and the pilot pattern index. The pilot pattern index is exemplified by the LTE protocol. There are 32 types of optional pilot patterns of the CSI-RS defined in the LTE protocol, and the pilot pattern index may be 0 to 31. In the specific implementation, the value may be different according to the specific system, and no limitation is imposed here.

Optionally, when the type of the reference signal is DMRS, the type indication identifier of the pilot pattern may include an antenna port number, for example, in an LTE network, sending on an antenna port with

antenna port numbers

7, 8, 11, and 13. The pilot pattern of the DMRS is the same pilot pattern, and the pilot pattern of the DMRS transmitted on the antenna ports of the antenna port numbers 9, 10, 12, and 14 is the same pilot pattern, and when the type of the reference signal is DMRS, the pilot is used. The type indication of the pattern may include only the antenna port number. In the specific implementation, the value may be different according to the specific system, and no limitation is imposed here.

Optionally, when the type of the reference signal is SRS, the pilot pattern may be a pre-agreed pilot pattern, and the type indication identifier of the pilot pattern may only indicate the type of the reference signal. The specific pre-defined pilot pattern may be a pilot pattern defined in the existing LTE protocol, or may be other pilot patterns, and is not limited herein.

Optionally, in a case that multiple network devices send the first RS to each other, the subframe information of the first configuration information of the first RS that is sent to the same network device may be the same, and the first RS that is sent to the same network device The RE locations of the first configuration information may be the same or different. If the RE locations are the same, each of the first RSs may multiplex the same RE by using an OCC code division.

Referring to FIG. 12 and FIG. 13, NE1 may be eNB1, and NE2 may be eNB2, which is optional. The cells under eNB1, eNB2, and eNB3 are all 4-antenna ports. When the eNB1, the eNB2, and the eNB3 respectively send the first RS, the pilot patterns corresponding to the respective antenna ports may be as shown in FIG. 12 and FIG. R ₃₁ , R ₃₂ R ₃₃ , R ₃₄ are the RE positions occupied by the respective antenna ports of the first optional first RS, and R ₃₅ , R ₃₆ R ₃₇ , R ₃₈ may be the second optional first RS The RE position occupied by each antenna port.

Optionally, R ₃₁ , R ₃₂ R ₃₃ , and R ₃₄ may send the RE position of the first RS for the four antenna ports of the eNB1, and R ₃₅ , R ₃₆ R ₃₇ , and R ₃₈ may send the four antenna ports of the eNB 2 . The RE position of the first RS. Then, R ₃₁ and R _{32 of} eNB 1 may be divided into OCC codes, and R ₃₃ and R ₃₄ may be divided by OCC codes. Similarly, R ₃₅ and R _{36 of} eNB 2 may be divided by OCC codes, and R ₃₇ and R ₃₈ may be divided by OCC codes.

Optionally, R ₃₁ , R ₃₂ , R ₃₅ , and R ₃₆ may send the RE position of the first RS for the four antenna ports of the eNB1, and R ₃₃ , R ₃₄ , R ₃₇ , and R ₃₈ are the four antenna ports of the eNB 2 . Send the RE location of the first RS.

Alternatively, there may also be of the eNB3 NE3, NE4 can also be of eNB4, R _31, R ₃₂ may be a four-antenna transmission eNB1 position RE of the first port of the RS, R _33, R ₃₄ may be a four eNB2 The antenna port sends the RE position of the first RS, R ₃₅ and R ₃₆ are RE positions that can send the first RS for the four antenna ports of the eNB3, and R ₃₇ and R ₃₈ are the first RS that can be sent for the four antenna ports of the eNB4. RE location.

In an optional implementation manner of the second configuration information, the subframe of the first RS in the first configuration information may be a dedicated subframe.

It should be noted that a general subframe may normally transmit control information such as a PDCCH, data information such as a PDSCH, a reference signal such as a CRS, and other information. The dedicated subframe defined in the embodiment of the present invention is used to send the first RS, or The first RS and the control information, that is, the data information such as the PDSCH is not transmitted on the dedicated subframe.

Optionally, the configuration of the subframe of the first RS may be configured by using an MBSFN subframe, and the configuration result of the MBSFN subframe may be specifically, and one or more subframes of the 10 subframes are MBSFN subframes.

In an optional combination of a subframe and a RE location, the subframe of the first RS in the first configuration information may be a subframe in which a PDCCH or a CRS is transmitted, and the data included in the subframe may have several Case: the first case: only the first RS, that is, does not include PDCCH, CRS, PMCH, and other information; the second case: includes the first RS and PDCCH information, or includes the first RS and CRS Information, or including the first RS and PDCCH information and CRS information. The PDCCH information in the subframe determined by the subframe information of the first RS may be located in the first to fourth symbols based on the second case of transmitting the first RS by using the subframe in which the PDCCH or the CRS is transmitted. The transmission mode does not affect the capacity of the PDCCH information, and the impact on the normal interaction information of the UE can be reduced.

In another optional combination of the subframe and the RE location, the subframe information of the first RS in the first configuration information may be a reference signal (Demodulation Reference Signal, DMRS) for demodulation. One of the set of subframe information, the first RE indication information in the first configuration information may select one of a set of DMRS selectable symbol position locations. For example, the optional subframe information and the symbol position of the DMRS may refer to the 36.211 protocol, and may also refer to definitions in other protocols, which are not limited herein. Correspondingly, the first configuration information may include at least one of indication information of a pilot pattern and indication information of a DMRS antenna port number.

In another optional combination of the subframe and the RE location, the subframe information of the first RS in the first configuration information may be one of a set of subframe information that is optional for the sounding reference signal SRS. The first RE indication information in the first configuration information may select one of a set of SRS selectable symbol position locations. The optional subframe information and symbol position of the SRS can be specifically referred to the 36.211 protocol, and can also refer to definitions in other protocols.

It should be noted that, the manner in which the subframe information of the SRS specified in the current protocol is defined includes the period and the offset of the subframe, and the first RS in the embodiment of the present invention may also use the optional subframe information of the SRS to be sent. The subframe of an RS may also include the period and offset of the subframe. The optional subframe information and the symbol position transmission of the SRS are used, so that when the UE1 is notified to the UE1, the procedure of the base station notifying the UE to the SRS in the current protocol may be adopted, instead of using the newly defined message, the UE may also avoid the current protocol. The method of transmitting and receiving data on the subframes and REs used by the SRS avoids transmitting and receiving data on the subframes and REs used by the first RS. Optionally, the subframe of the first RS may use the NE2 to indicate that the user equipment in the NE2 sends the SRS subframe, and the first RE indication information may use the NE2 to indicate that the user equipment under the NE2 sends the RE used by the SRS. For example, the NE1 may be used. The user equipment under the NE2 sends the SRS subframe and the RE sends the first RS. In this optional mode, the NE1 sends the subframe and the RE used by the first RS to the NE2, and does not use the same time-frequency resource that the user equipment under the NE2 sends the PUSCH. Optionally, the NE1 may pre-acquire the subframe and the RE used by the user in the S2 to send the SRS, and determine the subframe of the first RS and the first RE indication information in the optional first configuration information. Optionally, NE1 may not indicate that the subframe is a sending SRS subframe, but only send the first RS in an optional subframe of the SRS and an optional RE according to the manner of sending the SRS.

If the subframe of the first RS is any one of the optional subframe information sets of the SRS, the symbol of the RE occupied by the first RS indicated by the first RE indication information is optional for sending the SRS. For any one of the symbol position sets, the data included in the RE of the corresponding symbol of the subframe determined by the subframe information of the first RS may have several cases: the first case: only the first RS, that is, does not include information other than the first RS; the second case: includes both SRS information and the first RS.

The second case of transmitting the first RS based on the optional RE on the optional subframe using the SRS, the first RS The SRS information may be located on different subcarriers. In the second case, the sending process of the existing SRS may not be affected, and the first RS may be sent by using the idle RE resource in the subframe in which the SRS is sent, and the waste of the uplink resource for the UE is reduced.

The first case and the second case in which the first RS is sent by using the optional subframe of the SRS, and the RE occupied by the first RS indicated by the first RE indication information may also be located in the subframe determined by the subframe information of the first RS. The last symbol of the frame or the last plurality of symbols, such as one or two or three, can be referred to FIG. Since the UE transmits the SRS on the last symbol in a comb shape, the first RS can be transmitted using the blank area, so even if the first RS is transmitted, the SRS and uplink data transmission of the UE are not affected, and only the SRS capacity is reduced.

Optionally, based on the specific implementation manners in the optional implementation manner of the second configuration information, the subcarriers occupied by the first RS may be interval subcarriers, and the sending manner is used for uplink data of the UE. The impact is small. For example, if the UE sends the first RS by 1 subcarrier, 1 RB wastes 6 subcarriers; if the UE sends the first RS by 2 subcarriers, 1 RB wastes 4 subcarriers; This type of push.

It should be noted that, if the network device is a base station in the TDD mode and the working frequency is the same, for example, NE1 is eNB1, NE2 is eNB2, and the working frequency is f1, and NE1 sends the first RS through the antenna of the cell 1, then NE1 sends the first The time slot of an RS needs to be configured as a downlink time slot, and the NE2 receives the time slot of the cell 2, and the time slot in which the NE2 receives the first RS needs to be configured as an uplink time slot. FIG. 15 is a schematic diagram of a scenario of an optional implementation manner of the first configuration information.

In an optional implementation manner of the third configuration information, the first configuration information may include a scrambling code, where the scrambling code is used by the NE1 to perform scrambling on the first RS. The scrambling code can be used as the identifier of the first RS in addition to the anti-interference capability of the first RS. For example, when a network device receives a plurality of network devices and sends the reference signal provided by the embodiment of the present invention, NE1 sends a first RS to one NE2, and each NE1 can use its own device identifier as a scrambling code. NE2 can distinguish the first RS from different network devices according to the scrambling code, and can directly discard the encryption using unintended scrambling code. Reference signal. Optionally, the scrambling code may also be an identifier of the cell, and the NE2 may further distinguish the first RS sent by the antenna port of the different CELL of the NE1.

In an optional implementation manner of the fourth configuration information, the first configuration information may further include a period. That is, NE1 periodically sends the first RS to the NE2.

Based on an optional implementation manner of the fourth first configuration information, the NE1 further receives the second RS sent by the NE2 according to the fifth configuration information. When the fifth configuration information includes the time-frequency resource that the NE2 sends the second RS, the embodiment of the present invention further provides an optional implementation manner of the optional method for transmitting the reference information. The embodiments provided by the embodiments of the present invention further include:

The NE1 may send the first RS to the NE2 in the subframe information of the first RS, and the NE2 sends the second RS to the NE1 in the subframe information of the second RS.

The first configuration information includes subframe information of the first RS, and the fifth configuration information includes subframe information of the second RS.

Optionally, the NE1 sends the first RS on the downlink time slot of the subframe indicated by the subframe information of the first RS, and the NE2 sends the second RS on the uplink time slot of the subframe indicated by the subframe information of the first RS.

The intersection of the subframe information of the first RS and the subframe information of the second RS is not empty, and the front and back segments of the subframe determined by the subframe information of the first RS respectively include an uplink time slot and The downlink time slot, or the previous and subsequent segments of the subframe determined by the subframe information of the first RS respectively include a downlink time slot and an uplink time slot.

Optionally, NE1 and NE2 may belong to the same cell cooperation set, and NE1 may periodically send the first RS to NE2, and NE2 may periodically send the second RS to NE1.

In an optional implementation manner, it may be specified that, for a network device to which each cell in the same cell cooperation set belongs, in a certain nth subframe, the cell whose cell ID is an odd number is sent to be in a transmitting state, and is in a transmitting state. The NE to which the cell belongs sends the first RS, and the cell whose cell ID is even is the receiving state, and the NE that is in the receiving state receives the first RS, and performs the opposite at the next transmission time, for example, the n+Tth subframe. The operation, that is, the cell with the cell ID of the even number is the transmission state, the NE to which the cell in the transmitting state belongs is the first RS, the cell whose cell ID is an odd number is the receiving state, and the NE to which the cell in the receiving state belongs is the first RS. That is, the network device to which the cell with the cell ID is an odd number and the network device to which the cell with the even cell ID are assigned may adopt the method for transmitting the RS of NE1 and NE2, respectively. Optionally, other division manners may also be used to distinguish the cells or NEs in the transmit state and the receive state.

Further, the T may be a period in which the first RS is sent, the first configuration information may include subframe information of the first RS, and the fifth configuration information may include subframe information of the second RS, where the subframe information of the first RS includes a period and an offset of a subframe of the RS, the subframe information of the second RS includes a period and an offset of a subframe of the second RS, and a period of the subframe of the first RS and a subframe of the second RS The period of the subframe is the same, and the offset of the subframe of the first RS is separated from the offset of the subframe of the second RS by one cycle.

Optionally, the base station may send the RS in the same downlink time slot, and the base station of the second cell cooperation set is the uplink time slot in the time slot, and receives the RS at the same time, and may send the reverse direction in the next cycle. 16 is a schematic diagram of a scenario of still another alternative embodiment of the first configuration information. It should be noted that the period of NE1 may be different from the period of NE2.

Optionally, an optional implementation manner of the fifth first configuration information is that, for different antenna ports of one network device, the network device may send the first RS by multiplexing time-frequency resources, such as time division, frequency division, and code division. To reduce the waste of uplink resources or downlink resources of the UE.

Optionally, the optional implementation manner of the sixth first configuration information is that, for a one-to-many or many-to-many reference signal transmission scenario, the network device may use time division, frequency division, code division, etc. to reuse time-frequency resources. The way to reduce the waste of uplink resources or downlink resources of the UE.

Based on the methods shown in FIGS. 1 to 7, the relationship between the second configuration information, the third configuration information, and the fourth configuration information will be described below.

The content of the second configuration information, the third configuration information, and the fourth configuration information may be respectively a subset of the first configuration information, and the content included may be different, and only the first configuration information may be determined according to the second configuration information. The time-frequency resource of the RS is transmitted to ensure that the NE2 can receive the first RS; and, according to the third configuration information, the time-frequency resource that may collide with the UE that receives the third configuration information may be determined to ensure that the time-frequency resource may be received. The UE of the third configuration information does not receive the data by mistake; and, according to the fourth configuration information, the time-frequency resource that may collide with the UE that receives the fourth configuration information may be determined to ensure that the UE that receives the fourth configuration information is received. The data will not be sent by mistake, and thus will not affect the NE2 receiving the first RS.

On the basis of the foregoing various embodiments, the embodiment of the present invention provides several optional implementations of the second configuration information, the third configuration information, and the fourth configuration information.

Optionally, before S101NE1 sends the first RS to the NE2 according to the first configuration information, the NE1 sends the second configuration information to the NE2, where the second configuration information may include the subframe information of the first RS in the first configuration information, and/ Or, the second RE indicates information;

The second RE indication information may include: a first RE indication information in the first configuration information, or a symbol in which the RE occupied by the first RS indicated by the first RE indication information is located, or The sub-carrier in which the RE occupied by the first RS indicated by the first RE indication information is located, or the NE1 sends a type indication identifier of a pilot pattern corresponding to each antenna port used by the first RS.

Optionally, before the NE1 sends the downlink data to the UE1, the NE1 sends the third configuration information to the UE1. The third configuration information may include subframe information of the first RS of the first configuration information, and/or third RE indication information;

The third RE indication information includes: the first RE indication information, or the symbol of the RE occupied by the first RS indicated by the first RE indication information, or the first RE indication The subcarriers in which the REs occupied by the first RS are indicated by the information, or the type indication identifiers of the pilot patterns corresponding to the respective antenna ports of the NE1.

Similarly, the fourth configuration information may include subframe information of the first RS in the first configuration information, and fourth RE indication information;

The fourth RE indication information includes: an RE that is occupied by the first RS indicated by the first RE indication information, or an RE that is occupied by the first RS indicated by the first RE indication information. The symbol, or the sub-carrier in which the RE occupied by the first RS indicated by the first RE indication information is located, or the type indication identifier of the pilot pattern corresponding to each antenna port of the CELL1.

Optionally, the NE2 may send the fourth configuration information to the UE2 by using a resource block configuration Resource Block Assignment message.

On the basis of the methods shown in FIG. 1 to FIG. 7 , it is to be noted that the embodiment of the present invention further provides a new message format in which the fourth type network device sends the third configuration information and the fourth configuration information, which is the first embodiment of the present invention. The three configuration information and the fourth configuration information may be sent using at least one of the following message formats.

The first RS may be referred to as a cell to cell (C2C) reference signal. The configuration of the small-area reference signal and the new cell format are as follows.

The first type of new message format is the new cell in RRC signaling. The configuration information of the newly added inter-cell reference signal may include a period of the first RS, a time-frequency resource, a number of antenna ports, and the like.

–C2C-RS-Config

The second type of new message format is the new cell in the broadcast message. The new broadcast message can be packaged in the message format. The period of the first RS, the time-frequency resource, the number of antenna ports, and the like. Broadcast messages can be sent over the PBCH.

For example, the new cells in the MIB message are as follows:

MasterInformationBlock

The third type of new message format is the new cell in the physical layer signaling. The message format of the new physical layer signaling includes two types, and the first physical layer signaling is used to indicate the available time-frequency resources of the downlink data. The configuration of the C2C RS may be added to the DCI. The flag bit C2C RS indicator is used to indicate the RE position occupied by the first RS. The enumerated value of the flag bit may correspond to one or more pilot patterns. Optionally, the The flag bit may carry the type indication identifier of the foregoing pilot pattern, for example, may be a reference signal type or an antenna port number or an antenna port number or an index of one pilot pattern, or the like. Specifically, add the following information to DCI:

-Resource block assignment:

-For resource allocation type 0as defined in section 7.1.6.1of[3]

-bits provide the resource allocation

-For resource allocation type 1as defined in section 7.1.6.2of[3]

-bits of this field are used as a header specific to this resource allocation type to indicate the selected resource blocks subset

-1bit indicates a shift of the resource allocation span

-bits provide the resource allocation

Where the value of P depends on the number of DL resource blocks as indicated in section[7.1.6.1]of[3]

-for C2C RS indicator—0or 1/2/3bits

The second physical layer signaling is used to indicate available time-frequency resources of the uplink data. The configuration indication of the C2C RS may be added in the DCI, and the flag CSC RS symbol indicator may only indicate the symbol occupied by the first RS. Specifically, add the following information to DCI:

-Resource block assignment:

-For resource allocation type 0as defined in section 7.1.6.1of[3]

-bits provide the resource allocation

-For resource allocation type 1as defined in section 7.1.6.2of[3]

-1bit indicates a shift of the resource allocation span

-bits provide the resource allocation

-for C2C RS symbol indicator—0or 1/2bits

Optionally, the foregoing, where the second configuration information, the third configuration information, and the fourth configuration information are saved, for example, the interval subcarrier sends the first RS, and, for example, shares the subframe with the SRS, and then If the inter-cell reference signal of the interactive network device is transmitted through the shared time slot, the transmission code rate of the network device can be improved. Specifically, the formula for calculating the code rate is:

Code rate = (available RE* modulation method - CRC check code) / tbsize (transmitted information bit)

It can be seen that, when the implementation manner of the first configuration information of the number of occupied REs provided by the embodiment of the present invention is adopted, the transmission code rate of the network device can be improved.

On the basis of the method shown in FIG. 2, the embodiment of the present invention further provides four optional embodiments in which the NE1 sends the first RS to the NE2.

It should be noted that NE1 can send the first RS to NE2 through the digital beam and the analog beam.

In the first optional first RS transmission mode, if the NE1 sends the first downlink data to the UE1 in the form of a digital beam, the NE1 sends the first RS to the NE2, which may specifically include: The NE1 sends the first RS to the NE2 in a non-beam form;

The sending, by the NE1, the scheduling result of the first downlink data and the first downlink data to the NE2, the method may include: sending, by the NE1, the precoding matrix of the first downlink data to the NE2, so that the The NE2 obtains the first channel that is not precoded according to the first RS that is sent in the form of a non-beam, and according to the first channel that is not precoded, the precoding matrix of the first downlink data, and the The scheduling result of the first downlink data restores the first interference signal.

The first downlink data may be uncoded or encoded. If the first downlink data is uncoded, the precoding matrix needs to be sent to the NE2.

In the second optional first RS transmission mode, if the NE1 sends the first downlink data to the UE2 in the form of an analog beam, the NE1 sends the first RS to the NE2, which may specifically include: the NE1. The first RS is transmitted to the NE2 in the form of an analog beam.

In the third optional first RS transmission mode, if the NE1 sends the first downlink data to the UE2 in the form of a digital beam, the NE1 sends the first RS to the NE2, which may specifically include: The NE1 transmits the first RS to the NE2 in the form of a digital beam.

In the fourth optional first RS transmission mode, if the NE1 sends the first downlink data to the UE2 in the form of a digital beam,

The NE1 sends the first RS to the NE2, and the NE1 sends the first RS to the NE2 in the form of a digital beam.

The sending, by the NE1, the scheduling result of the first downlink data and the first downlink data to the NE2, specifically includes:

The NE1 sends the first downlink data in the form of a digital beam and the scheduling result of the first downlink data to the NE2.

FIG. 17 is a schematic structural diagram of a network device according to an embodiment of the present invention.

As shown in FIG. 17, the network device provided by the embodiment of the present invention may be used as the first network device NE1, and the NE1 may include:

The first transceiver module 11 is configured to send, by using the first configuration information, the first reference signal RS to the second network device NE2 to which the second cell CELL2 belongs according to the first configuration information; the first configuration information includes And indicating information about a time-frequency resource used by the NE1 to send the first RS.

Optionally, the NE1 further includes:

The processing module 12 is configured to detect that the ratio of the uplink and downlink subframes of the CELL1 and the CELL2 is inconsistent.

Optionally, the NE1 may further include:

The second transceiver module 13 is configured to send, to the NE2, a scheduling result of the first downlink data and/or the first downlink data, where the first downlink data is sent by the NE1 to the first cell of the NE1 CELL1 serves the user's device.

Optionally, the second transceiver module 13 may be configured to send the first downlink data and/or the first downlink data to the NE2 by using an X2 interface between the NE1 and the NE2. Scheduling results.

Optionally, the first configuration information includes:

Subframe information of the first RS, and/or,

Optionally, the first cell of the NE1 includes at least one antenna port, and the first RE indication information includes:

Optionally, at least one of the pilot patterns corresponding to the antenna ports of the NE1 belongs to a channel pattern information reference signal CSI-RS selectable pilot pattern set.

Optionally, the subframe determined by the subframe information of the first RS belongs to a set of selectable subframes of the sounding reference signal SRS of the NE2.

Optionally, the symbol of the RE occupied by the first RS indicated by the first RE indication information is the last symbol of the subframe determined by the subframe information of the first RS.

Optionally, the subframe information of the first RS is a dedicated subframe, and the dedicated subframe carries the first RS.

Optionally, the subframe determined by the subframe information of the first RS may include only the first RS, or

The subframe determined by the subframe information of the first RS may include the first RS and physical downlink control channel PDCCH information, or include the first RS and CRS information, or include the first RS and PDCCH information. And CRS information.

Optionally, the subframe determined by the subframe information of the first RS includes the first RS and the PDCCH in a subframe. Information, the PDCCH information is located in the first to fourth symbols.

Optionally, the first configuration information further includes a scrambling code, where the scrambling code is used by the NE1 to scramble the first RS.

Optionally, the second transceiver module 13 is further configured to send the second configuration information to the NE2, where the second configuration information includes subframe information of the first RS in the first configuration information, and Or, the second RE indicates information;

Optionally, the processing module 14 is further configured to determine, according to the first configuration information, a time-frequency resource that is available when the downlink data is sent to the first user equipment UE1 served by the first cell.

The first transceiver module 11 is further configured to send third configuration information to the UE1.

The third configuration information includes subframe information of the first RS of the first configuration information, and/or third RE indication information;

Optionally, the first transceiver module 11 is specifically configured to send the third configuration information by using a broadcast message and/or UE-specific information. Optionally, the first transceiver module 11 is specifically configured to send the third configuration information by using high layer signaling and/or physical layer signaling. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI.

Optionally, the third configuration information includes the third RE indication information, and the RE occupied by the first RS indicated by the third RE overlaps with the RE of the physical downlink shared channel PDSCH of the UE1;

The first transceiver module 11 is specifically configured to send the third configuration information to the UE1 by using UE-specific information, where the third configuration information includes third RE indication information, where the third RE indication information indicates The RE that conflicts with the PDSCH of the UE1 by the first RS indicates that the first RE indicates the intersection of the RE occupied by the first RS and the PDSCH of the UE1.

Optionally, the third configuration information includes the subframe information of the first RS and the third RE indication information, where the first transceiver module 11 is specifically configured to send the first message to the UE1 by using a broadcast message. And the first transceiver module 11 is further configured to send the third RE indication information in the third configuration information to the UE1 by using UE-specific information. .

Optionally, the first transceiver module 11 is further configured to receive, according to the fifth configuration information, the second RS that is sent by the NE2, where the fifth configuration information includes, when the NE2 sends the second RS Frequency resources.

Optionally, the first configuration information includes subframe information of the first RS, and the fifth configuration information includes subframe information of the second RS, where

The first transceiver module 11 is further configured to send the first RS on a subframe determined by the subframe information of the first RS, where

The first transceiver module 11 is further configured to receive the second RS on a subframe determined by the subframe information of the second RS.

Optionally, the intersection of the subframe information determined by the subframe information of the first RS and the subframe information of the second RS is not empty, and the preceding and following segments of the subframe determined by the subframe information of the first RS are The uplink time slot and the downlink time slot are respectively included, or the first and the last segments of the subframe determined by the subframe information of the first RS respectively include a downlink time slot and an uplink time slot;

The first transceiver module 11 is further configured to send the first RS on a downlink time slot of a subframe indicated by the subframe information of the first RS, and indicate the subframe information in the first RS. The second RS is received on an uplink time slot of a subframe.

Optionally, the first configuration information includes subframe information of the first RS, the fifth configuration information includes subframe information of the second RS, and the subframe information of the first RS includes the first The period and the offset of the subframe of the RS, the subframe information of the second RS includes the period and the offset of the subframe of the second RS, and the period of the subframe of the first RS and the subframe of the second RS The period is the same, the offset of the subframe of the first RS is separated from the offset of the subframe of the second RS by one cycle;

The first transceiver module is further configured to periodically send the first RS to the NE2, and periodically receive the second RS sent by the NE2.

Optionally, the first transceiver module 11 receives the second RS sent by each antenna port of the CELL2 of the NE2 through each antenna port of the CELL1.

The subframe information of the second RS is determined by the NE2 according to the cell identifier of the CELL2.

Optionally, the cell identifier of the CELL2 is an even number, and the cell identifier of the CELL1 is an odd number, and the subframe determined by the subframe information of the first RS is a first subframe, and the subframe information of the second RS is The determined subframe is a second subframe, and the second subframe is a subframe of a period of one subframe of the first RS after the first subframe; or

Optionally, the first transceiver module 11 is configured to send the first RS to each antenna port of the CELL2 of the NE2 through each antenna port of the CELL1.

Optionally, the CELL1 and the CELL2 belong to a cell cooperation set.

The network device of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1 to FIG. 16 , and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 18 is a schematic structural diagram of still another network device according to an embodiment of the present invention.

As shown in FIG. 18, the network device provided by the embodiment of the present invention may be used as the second network device NE2, and the NE2 may include:

The first transceiver module 21, the NE2 that is used by the second cell CELL2 to receive the first reference signal RS sent by the first network device NE1 to which the first cell CELL1 belongs according to the first configuration information, where the first configuration information includes And indicating information that the NE1 sends the time-frequency resource used by the first RS.

Optionally, the NE2 may further include a processing module 22, configured to remove interference of the NE1 on the first uplink data according to the first RS, where the first uplink data is from a user equipment under the NE2.

Optionally, the processing module 22 is configured to obtain, according to the first RS, a first channel between the NE1 and the NE2;

Obtaining a first interference signal according to the first channel;

Demodulating the first uplink data according to the first interference signal.

Optionally, the NE2 may include a second transceiver module 13 configured to receive a scheduling result of the first downlink data and/or the first downlink data sent by the NE1, where the first downlink data is the NE1 is sent to the user equipment under the NE1;

The processing module is specifically configured to restore the first interference signal according to at least one of the first downlink data and the scheduling result of the first downlink data, and the first channel.

Optionally, the second transceiver module 23 is configured to receive, by using an X2 interface between the NE2 and the NE1, a scheduling result of the first downlink data and the first downlink data.

Optionally, the first configuration information includes:

The subframe information of the first RS, and,

Optionally, the second transceiver module 23 is further configured to receive second configuration information that is sent by the NE1, where the second configuration information includes subframe information of the first RS, and/or a second RE Indication information;

The processing module 22 is further configured to determine the first configuration information according to the second configuration information.

Optionally, the processing module 22 is further configured to determine, according to the first configuration information, a time-frequency resource that is available when the second user equipment UE2 served by the CELL2 sends uplink data.

Optionally, the first transceiver module 21 is further configured to send fourth configuration information to the UE2.

Optionally, the fourth configuration information includes subframe information of the first RS in the first configuration information, and/or fourth RE indication information;

Optionally, the first transceiver module 21 is specifically configured to send the third configuration information by using a broadcast message and/or UE-specific information. Optionally, the first transceiver module 21 is specifically configured to send the third configuration information by using high layer signaling and/or physical layer signaling. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI.

The first transceiver module 21 is further configured to send the fourth configuration information to the UE2 by using UE-specific information, where the fourth configuration information includes fourth RE indication information, and the fourth RE indication information indicates The RE location of the PUSCH in which the RE of the first RS is occupied by the first RS indicates the intersection of the RE location indicated by the first RE indication information and the PUSCH of the UE2.

Optionally, the fourth configuration information includes a subframe of the first RS and the fourth RE indication information, where The first transceiver module 21 is configured to send the subframe information of the first RS in the fourth configuration information to the UE2 by using a broadcast message.

The first transceiver module 21 is specifically configured to send the fourth RE indication information in the fourth configuration information to the UE2 by using UE-specific information.

FIG. 19 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.

As shown in FIG. 19, the user equipment provided by the embodiment of the present invention may include:

The processing module 32 is configured to determine, according to the third configuration information, a time-frequency resource that is available when receiving data or transmitting data.

The third configuration information is used to indicate all or part of the time-frequency resources occupied by the first reference signal RS, where the first RS is the first network device NE1 to which the first cell CELL1 belongs to the second cell CELL2. Two network devices sent by NE2.

Optionally, the user equipment may further include:

The transceiver module 31 is configured to receive the third configuration information.

Optionally, the transceiver module 31 is configured to receive a broadcast message and/or UE-specific information, where the broadcast message and/or the UE-specific information includes the third configuration information.

Optionally, the transceiver module 31 is configured to receive high layer signaling and/or physical layer signaling, where the high layer signaling and/or physical layer signaling includes the third configuration information. Optionally, the high layer signaling includes a radio resource control RRC message. Optionally, the RRC message includes a primary system information block MIB message, or a system information block SIB message. Optionally, the physical layer signaling includes data control indication information DCI. Optionally, the third configuration information includes subframe information of the first RS, and/or third RE indication information,

Optionally, the serving cell of the user equipment is CELL1, and the third configuration information is sent by the NE1, and the processing module 32 may be specifically configured to determine, when the data is received, according to the third configuration information. Frequency resources.

Optionally, the third configuration information includes the third RE indication information, and the RE occupied by the first RS indicated by the third RE overlaps with the RE of the physical downlink shared channel PDSCH of the user equipment,

The transceiver module 31 is configured to receive the third configuration information by using the UE-specific information sent by the NE1, and the time-frequency resource that is available when the processing module 32 determines the received data is the PDSCH of the user equipment. An RE that does not overlap with the RE occupied by the first RS.

Optionally, the user equipment serving cell is CELL2, and the third configuration information is sent by the NE2, and the processing module 32 may be specifically configured to determine, according to the third configuration information, a time frequency that is available when sending data. Resources.

Optionally, the third configuration information includes a third RE indication information, and the RE occupied by the first RS indicated by the third RE indication information overlaps with the RE of the physical uplink shared channel PUSCH of the user equipment;

The transceiver module 31 is configured to receive the third configuration information by using the UE-specific information sent by the NE2, and the time-frequency resource that is available when the processing module 32 determines the data to be sent is An RE in the PUSCH that does not overlap with the RE occupied by the first RS.

FIG. 20 is a schematic structural diagram of an optional network device according to an embodiment of the present disclosure.

As shown in FIG. 20, an embodiment of the present invention provides a network device, where the network device has a function of implementing behavior of a first network device in the foregoing method. The structure of the network device includes a wireless communication interface 111, which may be, for example, a transmitter and a receiver, and a network communication interface 113. The wireless communication interface is configured to support communication between the network device and the network device and the user equipment, and the transmitter is configured to send information or data involved in the foregoing method to the network device and the user equipment, where the receiver is used to support the network. The device receives information or data sent by the network device and the user equipment involved in the foregoing method, and the network communication interface is used to support communication between the network device and the network device. In a possible implementation, a demodulator and/or a decoder may also be included in the structure of the network device. The demodulator is configured to demodulate or despread and demodulate information or data involved in the above method; the decoder is configured to decode or descramble information or data involved in the above method And decoding. In one possible implementation, the processor 112 may also be included in the structure of the network device. The processor is configured to support a network device to perform a corresponding function of the above methods. It can be understood that when the demodulator and/or decoder are not included in the structure of the network device, the functions of the demodulator and/or decoder may also be at the receiver or the Completed in the processor. The network device can also include a memory 114 for coupling with the processor to hold program instructions and data necessary for the network device. The network device may also include an interface unit for supporting communication with other network devices, such as communication with a core network node.

The wireless communication interface may be used to send or receive the first reference signal sent by the other network device to the network device, or may be used to send the third configuration information or the fourth configuration information to the user equipment.

It will be appreciated that Figure 20 only shows a simplified design of the network device. In a practical application, the network device may include any number of transmitters, receivers, processors, memories, etc., and all the network devices that can implement the embodiments of the present invention are within the protection scope of the embodiments of the present invention.

FIG. 21 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.

As shown in FIG. 21, an embodiment of the present invention provides a network device, where the network device has a function of implementing behavior of a second network device in the foregoing method. The structure of the network device includes a wireless communication interface 121, which may be, for example, a transmitter and a receiver, and a network communication interface 123. The wireless communication interface is configured to support communication between the network device and the network device and the user equipment, and the transmitter is configured to send information or data involved in the foregoing method to the network device and the user equipment, where the receiver is used to support the network. The device receives information or data sent by the network device and the user equipment involved in the foregoing method, and the network communication interface is used to support communication between the network device and the network device. In a possible implementation, a demodulator and/or a decoder may also be included in the structure of the network device. The demodulator is configured to demodulate or despread and demodulate information or data involved in the above method; the decoder is configured to decode or descramble information or data involved in the above method And decoding. In a possible implementation, the processor 122 may also be included in the structure of the network device. The processor is configured to support a network device to perform a corresponding function of the above methods. It can be understood that when the demodulator and/or decoder are not included in the structure of the network device, the functions of the demodulator and/or decoder may also be at the receiver or the Completed in the processor. The network device can also include a memory 124 for coupling with the processor to store program instructions and data necessary for the network device. The network device may also include an interface unit for supporting communication with other network devices, such as communication with a core network node.

It will be appreciated that Figure 21 only shows a simplified design of the network device. In practical applications, the network The network device may include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the embodiments of the present invention are within the protection scope of the embodiments of the present invention.

As shown in FIG. 22, an embodiment of the present invention provides a user equipment. The structure of the user equipment includes a transceiver 131, which may be, for example, a receiver and a transmitter. The transmitter is configured to support the user equipment to send information or data involved in the foregoing method to the network device, and the receiver is configured to support the user equipment to receive information or data sent by the network device involved in the foregoing method. In a possible implementation, an encoder and/or a modulator may also be included in the structure of the user equipment. The encoder is used to encode or encode and scramble the information or data involved in the above method; the modulator is used to modulate or modulate and spread the information or data involved in the above method. In a possible implementation, the user equipment may further include a processor 132. The processor is configured to support a user device to perform a corresponding function in the above method. It can be understood that when the modulator and/or the encoder are not included in the structure of the user equipment, the functions of the modulator and/or the encoder may also be in the transmitter or the processor. carry out. The user equipment may also include a memory 134 for coupling with the processor to store program instructions and data necessary for the user equipment.

The wireless communication interface may be configured to receive, by the network device, third configuration information or fourth configuration information.

It will be appreciated that Figure 22 only shows a simplified design of the user equipment. In a practical application, the user equipment may include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the embodiments of the present invention are within the protection scope of the embodiments of the present invention.

The embodiment of the invention provides a communication system, which comprises the network device and the user equipment described in the above aspects.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Those skilled in the art will appreciate that embodiments of the embodiments of the invention may be provided as a method, system, or computer program product. Thus, embodiments of the invention may be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, embodiments of the invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

Embodiments of the present invention refer to a method, a device (system), and a computer according to an embodiment of the present invention. The flow chart and/or block diagram of the program product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present invention has been described, it will be apparent that those skilled in the art can make various changes and modifications to the embodiments. Therefore, the appended claims are intended to be construed as a

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for transmitting a reference signal, comprising:

The first network device NE1 to which the first cell CELL1 belongs sends the first reference signal RS to the second network device NE2 to which the second cell CELL2 belongs according to the first configuration information; the first configuration information includes The information of the time-frequency resource used in the first RS is described.
The transmission method according to claim 1, wherein the first configuration information comprises:

Subframe information of the first RS, and/or,

The first resource unit RE indicates information, and the first RE indication information is used to indicate an RE occupied by the first RS.
The transmission method according to claim 2, wherein the subframe determined by the subframe information of the first RS belongs to a set of selectable subframes of the sounding reference signal SRS of the NE2.
The transmission method according to claim 3, characterized in that

The RE occupied by the first RS indicated by the first RE indication information is different from the RE used by the SRS under the NE2; and/or; the RE occupied by the first RS indicated by the first RE indication information and the SRS used by the NE2 The subcarriers in which the REs are located are different; and/or; the REs occupied by the first RS indicated by the first RE indication information are different from the symbols of the REs used by the SRSs under the NE2.
The transmission method according to claim 2, wherein the subframe information of the first RS is a dedicated subframe, and the dedicated subframe carries the first RS.
A transmission method according to claim 2 or 5, characterized in that

The subframe determined by the subframe information of the first RS includes only the first RS, or

The subframe determined by the subframe information of the first RS includes the first RS and physical downlink control channel PDCCH information, or includes the first RS and cell reference signal CRS information, or includes the first RS and PDCCH information and CRS information.
The transmission method according to any one of claims 1 to 6, wherein the method further comprises:

The NE1 determines, according to the first configuration information, a time-frequency resource that is available when the downlink data is sent to the first user equipment UE1 served by the first cell.
A transmission method according to any one of claims 1 to 7, wherein

The NE1 sends third configuration information to the UE1, where the third configuration information is used to indicate time-frequency resources available when the UE1 receives data from the NE1, and when the UE1 receives downlink data from the NE1. The frequency resource does not overlap with the time-frequency resource used by the NE1 that is sent by the first configuration information to send the first RS.
A method for transmitting a reference signal, comprising:

The second network device NE2 to which the second cell CELL2 belongs receives the first reference signal RS sent by the first network device NE1 to which the first cell CELL1 belongs according to the first configuration information, where the first configuration information includes Information of a time-frequency resource used by the first RS.
The transmission method according to claim 9, wherein

The NE2 cancels the interference of the NE1 on the first uplink data according to the first RS, where the first uplink data is from a user equipment under the NE2.
The transmission method according to claim 9 or 10, wherein the first configuration information comprises:

The subframe information of the first RS, and,

The first resource unit RE indicates information, and the first RE indication information is used to indicate an RE occupied by the first RS.
The transmission method according to any one of claims 9-11, wherein the method further comprises:

The NE2 determines, according to the first configuration information, a time-frequency resource that is available when the second user equipment UE2 served by the CELL2 sends uplink data.
The transmission method according to any one of claims 9 to 12, wherein the transmission method further comprises:

The NE2 sends the fourth configuration information to the UE2, where the fourth configuration information is used to indicate the time-frequency resource that is available when the UE2 sends the uplink data to the NE2, and is available when the UE2 sends the uplink data to the NE2. The time-frequency resource does not overlap with the time-frequency resource used by the NE1 that is sent by the first configuration information to send the first RS.
The transmission method according to claim 13, wherein

The fourth configuration information includes subframe information of the first RS in the first configuration information, and/or fourth RE indication information;

The fourth RE indication information includes: an RE that is occupied by the first RS indicated by the first RE indication information, or an RE that is occupied by the first RS indicated by the first RE indication information. The symbol, or the first RE indication information indicates at least one of a subcarrier in which the RE occupied by the first RS is located, or a type indication identifier of a pilot pattern.
A method for transmitting a reference signal, comprising:

The time-frequency resource that is available when the data is received or the data is sent, and the time-frequency resource that is available when the data is received or the data is not overlapped with the time-frequency resource used by the first RS, where the first RS belongs to the first cell CELL1. The first network device NE1 sends the second network device NE2 to which the second cell CELL2 belongs.
The transmission method according to claim 15, wherein

The UE1 determines, according to the third configuration information, time-frequency resources that are available when receiving data or transmitting data, where the third configuration information is used to indicate all or part of time-frequency resources occupied by the first reference signal RS, and the service of the UE1 The cell is CELL1 or CELL2.
The transmission method according to claim 16, wherein before the determining, by the UE1, the time-frequency resources available when receiving data or transmitting data according to the third configuration information, the method includes:

The UE1 receives the third configuration information from the NE1 or the NE2.
The transmission method according to any one of claims 16-17, wherein the third configuration information includes subframe information of the first RS, and/or third RE indication information,

The third RE indication information includes: an RE location occupied by the first RS, or

The symbol of the RE occupied by the first RS is at least one of three types of the pilot pattern of the pilot pattern in which the RE of the first RS is located and the type of the pilot pattern corresponding to the RE occupied by the first RS.
A transmission device for a reference signal, comprising: a first transceiver module, a second transceiver module, and a processing module, configured to perform the method for transmitting a reference signal according to any one of claims 1-14.
A transmission device for a reference signal, comprising: a transceiver module and a processing module, configured to perform the method for transmitting a reference signal according to any one of claims 1-18.
A network device, comprising: a wireless communication interface, a network communication interface, a processor, and a method for transmitting a reference signal according to any one of claims 9-14.
A user equipment, comprising: a wireless communication interface and a processor, for performing the method for transmitting a reference signal according to any one of claims 15-18.
A readable storage medium, comprising instructions, when the instructions are executed, as claimed The transmission method of the reference signal described in any of 1 to 18 is implemented.
An apparatus comprising a processor and a memory for storing instructions, the instructions being transmitted by the processor, the method of transmitting a reference signal according to any of claims 1-18.