WO2014019517A1

WO2014019517A1 - Method for transmitting reference signal, user equipment and network side device

Info

Publication number: WO2014019517A1
Application number: PCT/CN2013/080533
Authority: WO
Inventors: 周明宇; 马泽瑞瑟·大卫; 任晓涛
Original assignee: 华为技术有限公司
Priority date: 2012-07-31
Filing date: 2013-07-31
Publication date: 2014-02-06
Also published as: CN103582141A

Abstract

The present invention provides a method for transmitting a reference signal, a user equipment (UE) and a network side device. The method comprises: determining at least two reference signal resources, each the reference signal resource comprising at least one resource unit, each the reference signal resource corresponding to a piece of first configuration information, and a first reference signal resource in the at least two reference signal resources and at least one second reference signal resource have an overlapping relationship in at least one first time interval; determining first configuration information corresponding to each resource unit in the first reference signal resource in at least one first time interval; in the at least one first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, sending, on each resource unit of the first reference signal resource, a reference signal to the UE. This technical solution can flexibly configure RS resources, and save the overhead required for transmitting the RS.

Description

Method for transmitting reference signal, user equipment and network side equipment This application claims to be filed on July 31, 2012, the Chinese Patent Office, application number 201210268757.X, the invention name is "transmission reference signal method, user equipment The priority of the Chinese Patent Application, which is incorporated herein by reference. Technical field

The present invention relates to the field of communications, and more particularly to a method of transmitting a reference signal, a user equipment, and a network side device. Background of the invention

In the prior art, the network side device sends a reference signal (Reference Signal, RS) for measuring downlink channel state information (CSI) to the user equipment (User Equipment, UE), and the UE obtains the downlink by measuring the RS. CSI, and feedback (feedback) to the network side device. The content that the UE feeds back to the network side device may include, for example, Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Channel Quality Indicator (CQI), and precoding. Precoding Matrix Indicator (PMI), Rank Indicator (RI), and the like. In this way, the network side device can schedule downlink transmission according to the information fed back by the UE, for example, scheduling transmission of a Physical Downlink Shared Channel (PDSCH).

The network side device usually sends configuration information of an RS resource to the UE, and can obtain downlink CSI from the UE through the configuration information. For example, the network side device may send configuration information of the RS resource corresponding to the 2 antenna port to the UE, and the UE may receive the RS sent by the network side device from the corresponding 2 antenna port according to the configuration information.

Since the network side device can only configure one RS resource for the UE, it can only obtain the RS. The CSI corresponding to the resource, for example, the RS resource configured by the network side device for the UE includes only the RS corresponding to the 2 antenna port, and the network side device can only obtain the CSI corresponding to the 2 antenna port. However, it is possible that the actual channel environment is more suitable for transmission of the 4-antenna port. In other words, in order to obtain a suitable CSI, it may be necessary to receive the RS on the RS resource corresponding to the 4-antenna port. Therefore, the network side device cannot flexibly configure the RS resources, so that the RS cannot be properly transmitted. Summary of the invention

The embodiments of the present invention provide a method for transmitting a reference signal, a user equipment, and a network side device, which can flexibly configure RS resources, so that the RS can be properly transmitted.

In one aspect, a method for transmitting a reference signal is provided, including: determining at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, and each of the reference signal resources corresponds to a first configuration information, One of the at least two reference signal resources and the at least one second reference signal resource have an overlapping relationship in at least one first time interval; determining the first reference signal in the at least one first time interval First configuration information corresponding to each resource unit in the resource; in the at least one first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in each of the first reference signal resources A reference signal is sent to the user equipment UE on the resource unit.

In another aspect, a method for transmitting a reference signal is provided, including: determining at least two reference signal resources, wherein each of the reference signal resources includes at least one resource unit, and each of the reference signal resources corresponds to a first configuration information. And determining, by the first reference signal resource, the at least one second reference signal resource and the at least one second reference signal resource have an overlapping relationship in at least one first time interval; determining the first reference in the at least one first time interval First configuration information corresponding to each resource unit in the signal resource; in the at least one first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in each of the first reference signal resources The reference signal is received from the network side device on the resource unit.

In another aspect, a network side device for transmitting a reference signal is provided, including: a determining module, For determining at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, each of the reference signal resources corresponding to a first configuration information, and a first reference of the at least two reference signal resources The signal resource and the at least one second reference signal resource have an overlapping relationship in at least one first time interval, and determine first configuration information corresponding to each of the first reference signal resources in the at least one first time interval And a sending module, configured to send, to the user equipment UE, each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource in the at least one first time interval Send a reference signal.

In another aspect, a user equipment for transmitting a reference signal is provided, including: a determining module, configured to determine at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, and each of the reference signal resources Corresponding to a first configuration information, one of the at least two reference signal resources and the at least one second reference signal resource have an overlapping relationship in at least one first time interval, and are determined to be at least one of the foregoing a first configuration information corresponding to each resource unit in the first reference signal resource in a time interval; a receiving module, configured to: according to the first corresponding to each resource unit in the first reference signal resource, in the at least one first time interval And a configuration information, the reference signal is received from the network side device on each resource unit of the first reference signal resource.

The technical solution can send a reference signal to the user equipment on the overlapping resource unit according to the configuration information of the at least two reference signal resources. Since the network side device can provide multiple reference signal resources for the UE, the reference signal can be flexibly configured. Resources so that the reference signal can be transmitted appropriately. In addition, due to the overlap of some resource units, the overhead required to transmit the reference signal (Overhead) is saved. BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a schematic flow chart of a method of transmitting a reference signal according to an embodiment of the present invention. 2A through 2F are diagrams showing RS resources according to an embodiment of the present invention.

FIG. 3 is a schematic flow chart of a method of transmitting a reference signal according to an embodiment of the present invention. 4 is a schematic diagram of a process of transmitting a reference signal in accordance with one embodiment of the present invention. FIG. 5 is a schematic diagram of a process of transmitting a reference signal according to another embodiment of the present invention. FIG. 6 is a structural schematic diagram of a network side device according to an embodiment of the present invention.

Figure Ί is a structural schematic diagram of a user equipment in accordance with an embodiment of the present invention.

The embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of them. Example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. WCDMA (Wandaband Code Division Multiple Access) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A, Long term evolution-Advanced) The system, the Universal Mobile Telecommunication System (UMTS), and the like are not limited in the embodiment of the present invention. For convenience of description, the embodiment of the present invention will be described by taking an LTE network as an example.

Embodiments of the present invention can be used in wireless networks of different standards. A wireless access network may include different network elements in different systems. For example, the network elements of the radio access network in LTE (Long Term Evolution) and LTE-A (Long Term Evolution-Advanced) include eNB (eNodeB, evolved base station), WCDMA (Wideband Code) Division Multiple Access, Wideband Code Division Multiple Access) The network elements of the radio access network include RNC (Radio Network Controller) and NodeB. Similarly, WiMax ( Worldwide Interoperability for Microwave Access) Other embodiments of the present invention may also use a solution similar to the embodiment of the present invention, but the related modules in the base station system may be different. The embodiments of the present invention are not limited, but for convenience of description, the following embodiments will use network-side devices. Give an example for explanation.

It should be understood that, in the embodiment of the present invention, the user equipment (UE, User Equipment) includes but is not limited to a mobile station (MS, Mobile Station), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), a mobile phone (handset). And portable equipment, etc., the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular") Telephone), a computer with wireless communication function, etc., and the user equipment can also be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device.

In the LTE technology, for example, a Transmission Time Interval (TTI) is 1 ms, including 14 symbols. The LTE system bandwidth includes several Physical Resource Blocks (PRBs), and the bandwidth of one PRB includes 12 subcarriers. A PRB contains multiple resource elements (Resources, REs). One RE occupies one subcarrier in the frequency domain and occupies one symbol length in the time domain. In order to obtain downlink CSI, the network side device may send the RS in each PRB. After receiving the RS, the UE may obtain the downlink CSI information by measuring the received RS, and feed back the obtained downlink CSI information to the network side device. In addition, the network side device may send the RE information corresponding to the RS resource to the UE, and the UE may receive the RS from the corresponding RE according to the RE information, where each RS resource may include one or more used to send the RS. RE. For example, the network side device may send signaling to the UE to notify at least one RE (k, t) corresponding to one RS resource in one PRB, where RE (k, t) represents the RE information, and k represents a PRB. The number of the subcarrier in the frequency dimension, t represents the number of the symbol in the time dimension of a TTI. After receiving the information, the UE may determine all the REs corresponding to the RS, and receive the RSs on the REs to obtain the downlink CSI, and feed back to the network side device, so that the network side device can learn the downlink CSI for downlink transmission. Dispatch. However, this method lacks flexibility. That is, the network side device can only configure one RS resource for the UE in one PRB. The network side device can only obtain the CSI corresponding to the RS resource, and cannot obtain more information. In an embodiment of the present invention, a group of RSs may refer to RSs sent on one or more REs corresponding to one RS resource, for example, the same signaling by the base station (for example, the same signaling for transmitting configuration information) And the same signaling used to transmit the RE information) RS indicated to the UE. The set of RSs may be transmitted by the network side device one or more times. For example, the network side device sends a set of signaling to the UE, including configuration information of an RS (hereinafter referred to as an RS) corresponding to an antenna port, and the UE may determine, according to the configuration information, all REs corresponding to the RS sent by the network side device. .

1 is a method of transmitting an RS according to an embodiment of the present invention. The method of Figure 1 is performed by a network side device. 2A through 2F are schematic diagrams of RS resources in accordance with an embodiment of the present invention. The method of Fig. 1 will be described below with reference to Figs. 2A to 2F. The method of Figure 1 includes the following.

110. Determine at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, each of the reference signal resources corresponding to a first configuration information, and a first reference of the at least two reference signal resources The signal resource has an overlapping relationship with the at least one second reference signal resource for at least one first time interval.

120. Determine first configuration information corresponding to each resource element in the first reference signal resource in the at least one first time interval.

130. The reference signal is sent to the user equipment UE on each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource in the at least one first time interval.

According to an embodiment of the present invention, the network side device may configure multiple RS resources for the UE, for example, one RS resource is used for 2 antenna port transmission, and another RS resource is used for 4 antenna port transmission, so that the UE can measure these RS resources. The transmitted RS acquires downlink channel information (for example, CSI) in various cases. Here, "first" and "second" refer to any one of at least two reference signal resources, just for distinguishing, and do not represent the number of RS resources, wherein each RS resource may include one or more REs.

In 110, the network side device may determine, according to the RE information of the at least two RS resources and the second configuration information corresponding to the RS resources, the REs of the at least two reference signal resources. The network side device may send the RE information of the at least two RS resources and the second configuration information corresponding to the RS resources to the UE. For example, the network side device may send the RE information of the first RS resource and the second configuration information thereof to the UE. The first configuration information, and the RE information of the second RS resource and the second configuration information and the first configuration information are sent to the UE. The network side device can follow the first The first configuration information of the RS resource, the RS is sent on the RE corresponding to the RE information and the second configuration information of the first RS resource, and the RE of the second RS resource is used according to the first configuration information of the second RS resource. The RS is transmitted on the RE corresponding to the information and the second configuration information. The embodiment according to the present invention is not limited thereto, for example, in the case where the RE information and the first configuration information are previously set in the UE, it is not necessary to transmit the RE information and the first configuration information to the UE.

The at least two reference signal resources have an overlapping relationship in the at least one first time interval, and the at least two RS resources may be in accordance with the first configuration information of one of the at least two RS resources according to the embodiment of the present invention. The presence of overlapping parts of the RE is sent on the RS.

The second configuration information may be used to determine the RE of the RS resource in association with the RE information. For example, the second configuration information may be antenna port information. The first configuration information may be a parameter for transmitting the RS. For example, the first configuration information may be at least one of configuration information such as power information, sequence information, and time information. The second configuration information, the first configuration information, and the RE information may be sent by using the dedicated signaling, or may be carried in the existing signaling, which is not limited by the embodiment of the present invention.

The above overlap may mean that there is an overlap at the same time-frequency resource location within the same TTI. The at least one first time interval may be a periodic time interval, or may be a preset non-periodic time interval.

The network side device can be implemented as a base station (BS), an access point (AP), a remote radio equipment (RRE), a remote radio head (RRH), and a remote end. Remote Radio Unit (RRU), relay node, etc.

According to the embodiment of the present invention, the RS may be sent to the user equipment UE on the RE according to the configuration information of the at least two RS resources. Since the network side device can configure multiple RS resources for the UE, the RS resource can be flexibly configured. The RS is transmitted appropriately. For example, the network side device can flexibly configure multiple RS resources for the UE, and obtain CSI corresponding to, for example, 2 antenna ports and 4 antenna ports by using multiple CSIs reported by the UE, and finally can flexibly select 2 antenna ports or 4 antenna ports. Send a signal to the UE. In addition, since some of the REs overlap, the overhead required to transmit the RS is saved.

Optionally, according to another embodiment of the present invention, before sending the reference signal to the UE, the network side device may send the second configuration information of the at least two RS resources to the UE. In this case, the first configuration information and the RE information may be preset in the UE.

Optionally, according to another embodiment of the present invention, before sending the reference signal to the UE, the network The side device may send the second configuration information and the first configuration information of the at least two RS resources to the UE. In this case, the RE information can be set in advance in the UE.

Optionally, according to another embodiment of the present invention, before sending the reference signal to the UE, the network side device may send the second configuration information of the at least two RS resources to the UE, and for the at least two RS resources. The different RS resources send different types of first configuration information to the UE.

For example, for the first RS resource, the network side device may only send the antenna port information to the UE, and for the second RS resource, the network side device may send the antenna port information and the sequence information to the UE. The advantage of this is backward compatibility: Since the conventional network side device only configures one RS resource for the UE, usually some configuration information (for example, sequence information) of the RS resource is preset, for example, due to the RS resource. The sequence information sent on the uplink (for example, the initialization value of the sequence) is a cell ID (Cell ID), and therefore, the sequence information does not need to be retransmitted for the RS resource. In order to be compatible with the previous system, the sequence information may not be transmitted for the first RS resource according to an embodiment of the present invention, and configuration information such as sequence information may only be transmitted for the newly added RS resource.

Optionally, according to another embodiment of the present invention, for the first RS resource, only the second configuration information of the first RS resource is sent to the UE, and the second configuration of the at least one second RS resource is sent to the UE. Information and first configuration information.

For example, if all REs of an RS resource are respectively included by different RS resources, the network side device does not send configuration information other than the second configuration information (for example, antenna port information) corresponding to the RS resource. Alternatively, the network side device may send configuration information other than the antenna port to the UE, but the UE does not use configuration information other than the antenna port information.

Referring to FIG. 2A to FIG. 2C, FIG. 2A to FIG. 2C respectively show REs corresponding to three RS resources for transmitting an RS. For example, the network side device may configure three RS resources for the UE, and respectively send the first RS. 2, 3 groups of RSs, which are nested with each other, and a group of RSs are RSs transmitted on one or more REs corresponding to one RS resource, where RS resources corresponding to the first group RS and RSs corresponding to the second group RS The resources use RE (9, 5) and (9, 6), and the RS resources corresponding to the first group RS and the RS resources corresponding to the third group RS use RE (3, 5) and (3, 6). In this way, the network side device can transmit the RS on the RE (9, 5) and (9, 6) according to the configuration information (for example, power information) of the RS resource corresponding to the second group RS (for example, using a specific data signal) 6 dB high power transmission), according to the configuration information of the RS resources corresponding to the third group RS, in RE (3, 5) and (3, 6) The RS is transmitted (eg, using a power transmission that is 3 dB higher than the data signal). Correspondingly, the UE receives the RS on the RE, and the specific process is not described here. In other words, the configuration information other than the antenna port information of the RS resource corresponding to the first group RS does not function, in which case the network side device may not transmit the configuration other than the antenna port information to the UE. information. Optionally, in order to maintain the integrity of the signaling, the network side device may also send the configuration information, but the UE ignores the configuration information, that is, the configuration information is not used after receiving the configuration information.

Optionally, according to another embodiment of the present invention, in 110, determining, according to the RE information and the second configuration information of each of the at least two RS resources, each of the at least two RS resources. The RE information of the RS resource and the RE corresponding to the second configuration information, where the method of FIG. 1 further includes: transmitting, to the UE, RE information of each of the at least two RS resources.

For example, the network side device sends one RE information to the UE for each RS resource, so that the UE receives the corresponding N pieces of RE information and N pieces of configuration information (for example, second configuration information) of the N RS resources, and according to the ith The RE information and the ith configuration information determine the RE corresponding to the i th RS resource, where i=l, 2, 3, ..., N. Since the network side device can send one RE information for each RS resource, it is possible to flexibly configure multiple RS resources to use different REs. For example, the first RS resource may be configured to use the RE corresponding to the first group RS in Fig. 2A, and the second RS resource uses the RE corresponding to the second group RS of Fig. 2B. Optionally, the first RS resource may be configured to use the RE corresponding to the first group RS of FIG. 2A, and the second RS resource uses the RE corresponding to the third group RS of FIG. 2C.

According to the embodiment of the present invention, the RE information of the at least two RS resources is the same, where, in 110, determining according to the same RE information and the second configuration information of each of the at least two RS resources. An RE corresponding to the second configuration information of each of the at least two RS resources, where the method of FIG. 1 further includes: transmitting the same RE information as described above to the UE.

For example, the network side device may send one RE information to the UE for multiple (or all) RS resources. Correspondingly, the UE may receive one common RE information of the N RS resources and corresponding N configuration information (for example, second configuration information), and determine the i th RS resource according to the RE information and the i th configuration information. Corresponding REs, where REs corresponding to multiple RS resources having the same RE information overlap each other.

An embodiment of transmitting the same RE information for a plurality of RS resources will be described below with reference to Table 1. Table 1 gives an example of all RS resources preset in the network side device and the UE side. In these RS In the case where the information of the resources is preset in the network side device and the UE, the network side device may only transmit the RE information (the RS configuration number, that is, the number of the RS resource) and the antenna port information (for example, the number of the antenna ports) to the UE, The UE may determine the RE corresponding to the RS resource according to the RE information and the antenna port information. (k, t ) shown in Table 1 represents an RE of the RS resource with the largest number of k and the smallest number of t (for example, the RE in the uppermost left corner of FIGS. 2A to 2C), and a value in Table 1 may be For example, an RE with an RS configuration number of 0 and an RS antenna port number of 1 or 2 is as shown in FIG. 2B, and an RS with an RS configuration number of 0 and an RS antenna port number of 4 is as shown in FIG. 2A. The RE with the RS configuration number of 10 and the number of RS antenna ports is 1 or 2 is shown in Figure 2C. The RE with RS configuration number 0 and RS antenna port number 8 is shown in Figure 2D.

Table 1

Number of RS antenna ports

RS configuration number

1 or 2 4 8

0 (9,5) (9,5) (9,5)

1 (11,9) (11,9) (11,9)

2 (9,9) (9,9) (9,9)

3 (7,9) (7,9) (7,9)

4 (9,12) (9,12) (9,12)

5 (8,5) (8,5)

6 (10,9) (10,9)

7 (8,9) (8,9)

8 (6,9) (6,9)

9 (8,12) (8,12)

10 (3,5)

11 (2,5)

12 (5,9)

13 (4,9)

14 (3,9)

15 (2,9)

16 (1,9) 17 (0,9)

18 (3,12)

19 (2,12)

According to an embodiment of the present invention, the network side device may send only one RE information to the UE (for example, indicating that the "RS configuration number" is 0), and send the following configuration information to the UE: the RS resources corresponding to the first group of RSs correspond to 4 The antenna port, the RS resource corresponding to the second group RS corresponds to the 2 antenna port. In this way, the two RS resources overlap, that is, the partial RE of the RS resource corresponding to the first group RS overlaps with the RE of the RS resource corresponding to the second group RS, thereby saving signaling overhead.

In 120, determining, according to an overlapping relationship between the first reference signal resource and the at least one second reference signal resource, a first corresponding to each resource unit in the first reference signal resource in the at least one first time interval. Configuration information.

In 120, for each overlapping resource unit that overlaps with at least one second reference signal resource in the first reference signal resource, the reference signal resource that includes the overlapping resource unit and includes the least number of resource units may be used. The corresponding first configuration information is determined as the first configuration information of the overlapping resource unit.

In 120, when the resource elements of the first reference signal resource and the at least one second reference signal resource are different, the reference signal resource of the overlapping resource unit may be included in the at least one second reference signal resource. The corresponding first configuration information is determined as the first configuration information of the overlapping resource unit.

E.g,

In 120, for each overlapping resource unit that overlaps with the at least one second reference signal resource in the first reference signal resource, the first configuration information corresponding to the first reference signal resource or at least one second may be The first configuration information corresponding to one of the reference signal resources is determined as the first configuration information of the overlapping resource unit; and there is no overlap of each non-overlapping between the first reference signal resource and the at least one second reference signal resource And the first configuration information corresponding to the reference signal resource of the at least one second reference signal resource that includes the non-overlapping resource unit may be determined as the first configuration information of the non-overlapping resource unit.

According to an embodiment of the invention, the first RS resource comprises all REs of at least one second RS resource. It should be understood that here, the second RS resource is any RS resource included by other resources. For example, referring to FIG. 2A, FIG. 2B, and FIG. 2D, the RE of the RS resource corresponding to the fourth group RS includes the RE of the RS resource corresponding to the first group RS, and the RE of the RS resource corresponding to the first group RS includes the The two sets of RSs correspond to the REs of the RS resources. In other words, the network side device can configure three RS resources to the UE, corresponding to the fourth group RS, the first group RS, and the second group RS, respectively, which are nested with each other. In this case, since the REs corresponding to the multiple RS resources overlap, the number of REs required to transmit the RS to the UE is the maximum number of REs corresponding to the RS resources. For example, in this embodiment, in one PRB, the network side device only needs to send a total of 8 REs to the UE, and the UE can measure the CSI corresponding to the 2 antenna port based on the assumption of the 2 antenna port, and can be based on the 4 antenna port. H does not measure the CSI corresponding to the 4-antenna port, and can measure the CSI corresponding to the 8-antenna port based on the assumption of the 8-antenna port, thereby saving the overhead required for transmitting the RS. It should be understood that, in this embodiment, when the first RS resource is the RS resource corresponding to the first group of RSs, the second RS resource may be the resource corresponding to the second group of RSs, and the first RS resource is the fourth group. In the case of the RS resource corresponding to the RS, the second RS resource may be the RS resource corresponding to the first group RS or the second group RS.

In 120, first configuration information of each RE may be determined according to how many times each of the overlapping REs is included by the at least two RS resources, including an RE that does not determine the first configuration information. The first configuration information of the least number of RS resources is determined as the first configuration information of the RE that does not determine the first configuration information.

For example, the network side device may configure three RS resources for the UE, corresponding to the fourth group RS, the group RS, and the two groups of RSs, as shown in FIG. 2A, FIG. 2B, and FIG. (9, 5) and (9, 6) are included in all 3 RS resources, RE (3, 5) and (3, 6) are included in 2 RS resources, RE ( 2, 5 ), ( 2, 6 ), (8, 5) and (8, 6) are only included by one RS resource, such that the network side device firstly uses RE (9, 5) and (9, according to the configuration information of the RS resource corresponding to the second group of RSs. 6) transmitting the RS (for example, using a power transmission 6 dB higher than the data signal), and then transmitting the RS on the RE (3, 5) and (3, 6) according to the configuration information of the RS resource corresponding to the first group RS (for example) , using 3 dB higher power transmission than the data signal), and finally according to the configuration information of the RS resources corresponding to the 4th group RS in RE (2, 5), (2, 6), (8, 5) and (8, 6) Send RS on the top (for example using the same power transmission as the data signal). Correspondingly, the UE side receives the RS on the foregoing RE, and the specific process is not described here.

For example, the network side device may send the RE information of the two RS resources and the configuration information of each RS resource to the UE, where the RE information of the two RS resources is the same, and the RS configuration number is indicated. The configuration information of the RS resources corresponding to the first group of RSs indicates that the RS resources corresponding to the first group of RSs include the four antenna ports, and the RSs are transmitted using the initialization value cl of the sequence; the configuration information of the RS resources corresponding to the second group of RSs The RS resource corresponding to the second group RS is included to include the 2 antenna port, and the RS is transmitted using the initialization value c2 of the sequence. In this way, the UE determines, according to the foregoing preset manner, that the REs of the RS resources corresponding to the first group of RSs include (9, 5), (9, 6), (3, 5), and (3, 6), the second group of RSs. The REs of the corresponding RS resources include (9, 5) and (9, 6), that is, the RS resources corresponding to the first group of RSs include the RS resources corresponding to the second group of RSs. Therefore, the REs belonging to the RS resources corresponding to the first group RS and not belonging to the RS resources corresponding to the second group RS include (3, 5) and (3, 6). In this way, the network side device sends the RS on the two non-overlapping REs according to the configuration information of the RS resources corresponding to the first group of RSs, that is, the initialization value cl of the sequence is used in the two REs (3, 5) and (3, 6) transmitting the RS; transmitting the RS on the overlapping two REs according to the configuration information of the RS resource corresponding to the second group RS, that is, using the initialization value c2 of the sequence on RE (9, 5) and (9, 6) Send RS.

According to the embodiment of the present invention, flexible configuration can be implemented only by limited signaling, and the network side device is not required to send signaling to the UE to indicate "application information is applied according to 2 REs, 2 REs, 4 REs, respectively" and Corresponding configuration information, only need to send 3 configuration information to the UE, and can be implemented according to the preset according to the embodiment of the present invention, which greatly reduces the signaling overhead.

Optionally, as another embodiment, in 120, the first configuration information of the first reference signal resource may be determined as a resource unit that does not overlap between the first reference signal resource and the at least one second reference signal resource. First configuration information; and determining, by the first configuration information of one of the at least one second reference signal resource, that there is an overlapping resource unit between the first reference signal resource and the at least one second reference signal resource A configuration message.

In this embodiment, the network side device does not perform more than two overlapping configurations, and the first configuration information of the first RS resource may be determined as the first configuration information of the overlapping RE, and the second RS resource is used. The first configuration information is the first configuration information of the non-overlapping RE. Therefore, the RS may be sent on the non-overlapping RE according to the first configuration information of the first RS resource, according to the first configuration information of the second RS resource. The RS is sent on the overlapping RE. In this way, it is not necessary to judge the number of times that different REs are included by the RS resources, and the complicated process of judging is avoided, and the order is realized. For example, the network side device may send the RE information of the two RS resources and the second configuration information of each of the RS resources to the UE, where the RE information of the two RS resources indicates that the RS configuration number is 0; The second configuration information of the resource indicates that the RS resource corresponding to the first group RS includes a 4-antenna port. And transmitting the RS by using a power higher than the data signal by 3 dB; the second configuration information of the RS resource corresponding to the second group of RSs indicates that the RS resource corresponding to the second group of RSs includes the 2 antenna ports, and uses a power higher than the data signal by OdB ( That is, the transmission power is the same as the data signal) and the RS is transmitted. In this way, the UE determines, according to the foregoing preset, that the REs of the RS resources corresponding to the first group of RSs include (9, 5), (9, 6), (3, 5), and (3, 6), and the second group of RSs corresponds to The RE of the RS resource includes (9, 5) and (9, 6), that is, the RS resource corresponding to the first group of RSs includes the RS resources corresponding to the second group of RSs. Therefore, the non-overlapping REs include (3, 5) and (3, 6), and the overlapping REs include (9, 5) and (9, 6). In this way, the network side device can send the non-overlapping two REs according to the first configuration information of the RS resources corresponding to the first group of RSs, that is, using the power higher than the data signal by 3 dB in RE (3, 5) and (3, 6) transmitting the RS; transmitting the two REs according to the first configuration information of the RS resources corresponding to the second group RS, that is, sending the RS on the RE (9, 5) and (9, 6) with the same power as the data signal .

In 130, a reference signal may be sent to the UE on each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource by using different network side devices. Specifically, different network devices may correspond to different first configuration information, and may send a reference signal to the UE on the resource unit in the first reference signal resource corresponding to the first configuration information.

In 130, there may be no overlapping REs and overlapping overlaps between the first reference signal resource and the at least one second reference signal resource by different network side devices according to the first configuration information of different RS resources. The RS is sent to the UE on the RE.

Specifically, the network side device may use, by using the first network side device, the RE of the second RS resource corresponding to the RE information and the second configuration information of the first RS resource according to the first configuration information of the first RS resource. The RS is transmitted on the overlapping RE, and the first configuration information of the second RS resource overlaps with the RE of the second RS resource corresponding to the RE information and the second configuration information of the second RS resource. The RS transmits an RS to the UE. In other words, different REs for transmitting a group of RSs correspond to different network side devices, or different network side devices transmit RSs on different REs for transmitting a group of RSs, for example, for the first RS resources, different The network side device transmits the RS on the non-overlapping RE and the overlapping RE, respectively.

For example, in the case of Joint Transmission (JT) in the CoMP technology, multiple network side devices simultaneously transmit downlink data signals to the UE. In order to enable the network side device to perform the accurate scheduling of the downlink data signal sent by the UE, the UE needs to feed back the joint CSI corresponding to the multiple network side devices. For example, the first network measurement device and the second network side device both include two antenna ports. They can send downlink data signals to the UE through a total of 4 antenna ports in a joint transmission manner. Correspondingly, the UE needs to measure the downlink CSI corresponding to the 4 antenna ports.

Referring to FIG. 2F, the RS resource corresponding to the first group RS includes the RS resources corresponding to the second group RS, and the overlapping REs of the two groups of RS resources are (9, 5) and (9, 6), and the non-overlapping RE is (3, 5) and (3, 6). According to an embodiment of the present invention, the first network side device may send the RS to the UE on the REs (9, 5) and (9, 6), and the second network side device may be in the RE (3, 5) and (3, 6) The uplink is sent to the UE, so that the CSI obtained by the UE to measure the first group of RSs corresponds to the joint CSI of the two network side devices, and the CSI obtained by the UE to measure the second group of RSs corresponds to the CSI corresponding to the first network side device. In this manner, the UE may report the two sets of RSs and obtain the two CSIs to the network side device (for example, the first network side device or the second network side device or the central control node in the CoMP technology). The first CSI corresponds to the CSI of the CoMP joint transmission JT of the first network side device and the second network side device, and the second CSI corresponds to the CSI according to the first network side device, so that the system can flexibly select CoMP. The JT transmission mode transmits a downlink data signal to the UE or transmits the downlink data signal to the UE only through the first network side device.

According to an embodiment of the present invention, in 130, a partial transmission resource interval of the at least two reference signal resources may be overlapped, according to the first configuration information of the at least two reference signal resources, The resource unit information and the second configuration information corresponding to the resource unit send a reference signal to the UE.

Optionally, as another embodiment, in 130, the method of FIG. 1 further includes: transmitting, in the absence of overlapping transmission time intervals, that the resource elements of the at least two reference signal resources do not overlap, The first configuration information of the reference signal resource transmitted on the time interval transmits a reference signal to the UE on the resource unit of the reference signal resource transmitted on the transmission time interval that does not overlap.

In other words, an embodiment according to the present invention may be applied in a TTI indicated by both the time information of the first RS resource and the time information of the second RS resource. The network side device may send time information to the UE for configuring the sending time of the RS resource. For example, the time information of the first RS resource indicates that the sending time of the RS is ΤΉ, the second RS resource is numbered 0, 5, 10, . The time information indicates that the sending time of the RS is 编号, which is numbered 0, 10, 20, ..., so that the two RS resources will only occur on the numbers 0, 10, 20 ······ Overlapping, so that the invention only needs to be applied on the 编号 of numbers 0, 10, 20 ·····, there is no overlap problem on other ,, Therefore, the method of the present invention can be omitted.

For example, when the transmission time of the RS is 0, 10, 20, ..., the network side device may send the RS according to the method in the foregoing embodiment, for example, may be the first according to the second RS resource. The configuration information is sent on the overlapping REs, and the RSs are sent on the non-overlapping REs according to the first configuration information of the first RS resources, that is, the sending time of the RSs is numbered 5, 15, 25 · The TTI of the present invention may not use the method of the present invention. For example, the RS may be transmitted on the RE with the first RS resource only according to the first configuration information corresponding to the first RS resource.

For example, referring to FIG. 2F, in the system applying the CoMP technology, the first network side device and the second network side device may be configured on the TTIs of the number 0, 10, 20, . . . The RS is transmitted according to the method of the present invention, and the transmission time at the RS is numbered 5, 15, 25...

On the TTI, the first network side device and/or the second network side device may send the RS on the RE with the first RS resource only according to the first configuration information corresponding to the first RS resource.

According to an embodiment of the present invention, the second configuration information includes antenna port information, and the first configuration information includes at least one of power information, sequence information, and time information.

For example, the network side device may send the antenna port information to the UE, and the UE may be configured to receive the RS corresponding to one or more of the 1 antenna port, the 2 antenna port, the 4 antenna port, and the 8 antenna port to obtain the downlink CSI. According to the embodiment of the present invention, the network side device may send the antenna port information to the UE, and may configure different RS resources corresponding to different antenna port numbers according to the antenna port information, as shown in FIG. 2A to FIG. 2D.

The network side device can send sequence information to the UE. The RS sent by the network side device to the UE is usually a certain sequence of modulated signals, for example, if the full bandwidth includes 100 PRBs, and only one RE is used for each RS to transmit RSs (each REB has 2 REs for sending) The embodiment of the RS is similar, and is not described here again. The network side device may send an RS of length 100 to the UE, and the RS may be generated by a mathematical transformation of a sequence of length 100, which is referred to herein as a sequence modulated signal. For example, in an LTE system, RS can be generated by the following mathematical transformation of c(.),

r (m) = -^ (l - 2 - c (2m)) + j (l - 2 · c (2m + 1)), m = 0,1,..., - 1

V2 2 ( 1 ) where m denotes the number of the PRB, indicating the number of PRBs transmitted downstream; c(.) is a pseudo-random sequence whose sequence corresponds to a different sequence by "initialization, different" values. Based on the information, the UE can learn the RS sent by the network side device according to the information, and then obtain the downlink CSI according to the received RS. For example, the UE is based on the value of " As an RS, the downlink CSI can be acquired by convolving the generated RS with the received RS. The network side device may send the sequence information to the UE, so that different sequences of different RS resources may be configured to send multiple RSs generated by the sequence to the UE. Therefore, for example, the correlation between the sequence and the interference signal may be avoided. The disadvantage of estimating the CSI accuracy is that the diversity sequence is obtained, so it is more flexible.

The network side device can control the power of the RS. For example, the transmission power of the RS can be increased, so that the signal quality of the UE receiving the RS is better, and the estimated CSI is more accurate. However, the network side device needs to notify the UE of the power information by signaling, so that the CSI fed back by the UE conforms to the power of the data signal. For example, the power of the RS is 3 dB higher than that of the data signal, and the UE detects the RS to know that the Signal to Interference plus Noise Ratio (SINR) corresponding to the RS is SINR1, but if the UE feeds back CSI with SINR1 as a hypothesis, it cannot reflect The SINR experienced by the data signal, because the transmit power of the data signal is 3 dB lower than the RS. In this way, the network side device needs to send the power information of the RS to the UE, so that the UE determines that the signal to interference and noise ratio of the RS is SINR1, and then obtains the signal to interference and noise ratio SINR1-3dB corresponding to the data signal according to the power information of the RS, and finally The signal to interference and noise ratio corresponding to the data signal is assumed to feed back CSI. Specifically, the power information is the power ratio of the RS to the data signal (as in the above 3 dB), or the power ratio of the RS to the other RS, and the UE can feed back the CSI according to the power information. According to the embodiment of the present invention, different powers can be configured for different RS resources by transmitting power information to the UE, which can avoid, for example, the disadvantage that the estimated CSI accuracy is not high due to the low power of a certain RS resource. In addition, it is more flexible because it allows different network side devices to use different powers.

The network side device may allocate a different time to the UE to send the RS. For example, the time information includes a period in which the network side device sends the RS to the UE, and may further include a time offset in which the network side device sends the RS to the UE. Specifically, the network side device sends time information to the UE, indicating that the period of the RS is 5 ΤΉ, and the time offset is 2 TTIs; thus, after receiving the UE, the number is 5xt+2 (t=0, l , ... on the TTI receives the RS to obtain the downlink CSI. According to the embodiment of the present invention, different time can be configured for different RS resources by sending time information to the UE, for example, all RS resources can be avoided from being concentrated in some TTIs, so that the number of REs available for transmitting signals in these ports is higher. less.

It should be understood that, according to an embodiment of the present invention, the network side device may transmit some or all of power information, sequence information, and time information. For example, the UE may set a part of information in advance. In this way, the network side device only needs to send other information to the UE, thereby saving overhead. For example, the sequence information may be preset in the network side device and the UE. For example, the cell ID of the cell serving the UE may be preset, and the cell ID may be acquired by the UE in the process of accessing the cell. The network side device does not need to send the sequence information to the UE. For example, the network side device and the UE may preset time information, for example, the UE is preset to be numbered 5xt+2 (t=0, l, ...). The network side receives the RS to obtain the downlink CSI, so that the network side does not need to send the time information to the UE. The embodiment according to the present invention is not limited thereto, for example, power information, etc. may be preset in the network side device and the UE. Etc., I will not repeat them here.

Fig. 3 is a schematic flow chart showing a method of transmitting RS of a transmission signal according to an embodiment of the present invention. The method of Figure 3 is performed by a user equipment. The method of Fig. 3 corresponds to the method of Fig. 1, and will not be described again. The method of Figure 3 includes the following.

310, determining at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, each of the reference signal resources corresponding to a first configuration information, and a first reference of the at least two reference signal resources The signal resource has an overlapping relationship with the at least one second reference signal resource for at least one first time interval.

320: Determine first configuration information corresponding to each resource element in the first reference signal resource in the at least one first time interval.

330. The at least one first time interval, the reference signal is received from the network side device on each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource.

According to the embodiment of the present invention, the RS may be received from the network side device on the overlapping RE according to the configuration information of the at least two RS resources. Since the network side device can configure multiple RS resources for the UE, the RS resource can be flexibly configured. , so that the RS can be transmitted appropriately. In addition, since there are overlaps in the partial REs, the overhead required to transmit the RS is saved.

In 320, determining, according to the overlapping relationship between the first reference signal resource and the at least one second reference signal resource, a corresponding one of each resource unit in the first reference signal resource in the at least one first time interval. A configuration message.

In 320, for each overlapping resource unit that overlaps with at least one second reference signal resource in the first reference signal resource, the reference signal resource that includes the overlapping resource unit and includes the least number of resource units may be used. The corresponding first configuration information is determined as the first configuration information of the overlapping resource unit. According to an embodiment of the present invention, when the resource elements of the first reference signal resource and the at least one second reference signal resource are different, in 320, the overlap may be included in the at least one second reference signal resource. The first configuration information corresponding to the reference signal resource of the resource unit is determined as the first configuration information of the overlapping resource unit.

In 320, for each overlapping resource unit that overlaps with the at least one second reference signal resource in the first reference signal resource, the first configuration information corresponding to the first reference signal resource or at least one second may be used. The first configuration information corresponding to one of the reference signal resources is determined as the first configuration information of the overlapping resource unit; and there is no overlap of each non-overlapping between the first reference signal resource and the at least one second reference signal resource And the first configuration information corresponding to the reference signal resource of the at least one second reference signal resource that includes the non-overlapping resource unit may be determined as the first configuration information of the non-overlapping resource unit.

Optionally, as another embodiment, before receiving the reference signal from the network side device, the second configuration information of the at least two RS resources may be received from the network side device, and the first configuration information is preset.

Optionally, as another embodiment, the second configuration information and the first configuration information of the at least two RS resources may be received from the network side device before receiving the reference signal from the network side device.

Optionally, as another embodiment, before receiving the reference signal from the network side device, the second configuration information of the at least two RS resources may be received from the network side device, and different for the at least two RS resources. The RS resource receives different types of first configuration information from the network side device.

Optionally, as another embodiment, before receiving the reference signal from the network side device, the second configuration information of the first RS resource may be received from the network side device only for the first RS resource or not used from the network side. The first configuration information received by the device, and the second configuration information and the first configuration information of the foregoing at least one second RS resource are received from the network side device.

Optionally, as another embodiment, the RE information of each of the at least two RS resources may be received from the network side device, where, in 310, each of the at least two RS resources may be The RE information of the RS resource and the second configuration information determine an RE corresponding to the RE information and the second configuration information of each of the at least two RS resources.

According to the embodiment of the present invention, the RE information of the at least two RS resources is the same, and the method of FIG. 3 further includes: receiving the same RE information from the network side device, where at 310, Determrating an RE corresponding to second configuration information of each of the at least two RS resources according to the same RE information and the second configuration information of each of the at least two RS resources.

According to an embodiment of the invention, the first RS resource comprises all REs of at least one second RS resource

In 320, the first configuration information of each RE may be determined according to the number of times that each of the overlapping REs is included by the at least two RS resources, including the RE that does not determine the first configuration information. The first configuration information of the least number of RS resources is determined as the first configuration information of the RE of the undetermined first configuration information.

Optionally, as another embodiment, in 320, the first configuration information of the first reference signal resource may be determined as a resource unit that does not overlap between the first reference signal resource and the at least one second reference signal resource. First configuration information; and determining, by the first configuration information of one of the at least one second reference signal resource, that there is an overlapping resource unit between the first reference signal resource and the at least one second reference signal resource A configuration message.

Optionally, in another embodiment, in 330, the different network may be received on each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource. The reference signal of the side device. Specifically, different network devices may correspond to different first configuration information, and may receive reference signals from different network side devices on the resource unit in the first reference signal resource corresponding to the first configuration information.

Optionally, in another embodiment, in 330, there may be no overlapping RE and presence between the first reference signal resource and the at least one second reference signal resource according to the first configuration information of the different RS resources. The RSs on the stacked REs receive the RSs from different network side devices.

According to an embodiment of the present invention, in 330, the first configuration information of the at least two reference signal resources may be in the foregoing transmission time interval in which the partial resource units of the at least two reference signal resources are overlapped, and The resource unit information and the second configuration information corresponding to the second unit receive the reference signal from the network side device.

Optionally, in another embodiment, in 330, the method further includes: at a transmission time interval in which the resource units of the at least two reference signal resources do not overlap, according to the foregoing transmission time interval in which there is no overlap The first configuration information of the reference signal resource transmitted on the resource unit of the reference signal resource transmitted on the transmission time interval that does not overlap with the foregoing receives the reference signal from the network side device. Optionally, in another embodiment, in 330, according to the first configuration information of the different RS resources, the REs corresponding to the RE information and the second configuration information of the different RS resources are received differently. The RS of the network side device, wherein part of the REs of the different RS resources overlap at the same time-frequency resource location of different transmission time intervals.

Embodiments of the present invention are described in more detail below with reference to specific examples.

4 is a schematic diagram of a process of transmitting an RS in accordance with one embodiment of the present invention.

According to the embodiment of the present invention, the RS may be sent to the UE by using the multiple RS resources by the network side device, and the UE obtains various hypotheses by measuring the RS sent on the multiple RS resources (for example, 2 antenna port hypothesis and 4 antennas) The CSI corresponding to the port hypothesis). According to the embodiment of the present invention, a plurality of RS resources including 2 antenna port transmission corresponding RS resources and 4 antenna port transmission corresponding RS resources are taken as an example, and are described with reference to FIGS. 2A to 2E.

410. The network side device determines an RE used to send the RS.

The network side device can select the RE for transmitting the RS according to a preset (or configuration). For example, the network side device and the UE both pre-set specific combinations of multiple groups of REs, which are represented by time-frequency resource locations (k, f), and each group of REs corresponds to one RS resource, as shown in Table 1 above. In this embodiment, the network side device may determine the number (RE information) of a group of REs and the number of antenna ports used (configuration information), and according to the number of the group of REs and the number of antenna ports used from these Two RS resources are selected in the combination. For example, the network side device determines that the RE of the first RS resource (corresponding to the 4 antenna port) in one PRB includes (9, 5), (9, 6), (3, 5). And (3, 6), the RE of the second RS resource (corresponding to the 2 antenna port) includes (9, 5) and (9, 6). Obviously, the RE (9, 5), (9, 6) of the first RS resource overlaps with the RE (9, 5) and (9, 6) of the second RS resource, as shown in FIG. 2A and FIG. 2B. Show. According to the embodiment before the present invention, the method of determining the RE is not limited, and for example, it can be randomly selected from a plurality of sets of available REs.

420. The network side device sends the RE information and the configuration information to the UE.

The network side device may send signaling information to the UE, for example, to notify the UE that the RE of the first RS resource in the PRB includes (9, 5), (9, 6), (3, 5), and (3) , 6), the RE of the second RS resource includes (9, 5) and (9, 6), and informs the UE of configuration information, such as antenna port information such as the number of antenna ports. Since both the UE and the network side device are configured with Table 1, the network side device can send a number of RE numbers and antenna ports to the UE, so that Based on the number and the number of antenna ports, the UE learns the specific combination of the group of REs indicated by the network side device by looking up Table 1.

430. The UE determines an RE for receiving the RS.

The UE may determine an RE for receiving the RS according to the RE information and the configuration information, wherein the RE information of the RS resource is not limited. For example, RE (9, 5) and (9, 6) correspond to the RE group numbered 0, and RE (3, 5) and (3, 6) correspond to the RE group numbered 10. The network side device only needs to set the RE group. The number 0 is sent to the UE, and the UE can know according to the number: The network side device instructs the UE to receive the RS on the RE (9, 5) and (9, 6) for acquiring the CSI. For example, the network side device and the UE both pre-set a plurality of REs (k, f) and determine other REs by using a certain RE, so that the network side device determines and sends an RE number to the UE, and the UE can learn the network. The (k,f) information of the RE indicated by the side device, for example, the number of the RE (9, 5) is set to 0, and the number of the RE (3, 5) is 10, the network side device only needs to number the RE. 0 is sent to the UE, and the UE can learn that one RE of the RE corresponding to the RS indicated by the network side device is RE (9, 5), and then determines the manner of other REs by using a certain RE according to a preset manner, and passes the RE. To determine another RE (9, 6), it is finally known that the network side device instructs the UE to receive the RS on the RE (9, 5) and (9, 6) for acquiring the CSI.

440. The network side device sends an RS to the UE on the overlapping RE.

For example, the network side device may also follow the configuration information (for example, time information, power information, and sequence information) corresponding to the 2 antenna ports through the antenna ports 0 and 1 on the REs (9, 5) and (9, 6). Sending an RS to the UE, meanwhile, the UE can pass the antenna ports 0 and 1 at the RE (9,

5) and (9, 6) receive RS, where different antenna ports can use different RE and / or orthogonal codes. Since RE ( 9, 5 ) and ( 9, 6 ) are REs whose two RS resources overlap, RE ( 9, 5 ) and (9, 6) can be used for both the first RS resource and the first. 2 RS resources.

450. The network side device sends the RS to the UE on the non-overlapping RE.

For example, the network side device may provide the UE to the UE on the REs (3, 5) and (3, 6) through the antenna ports 2 and 3 according to configuration information (for example, time information, power information, and sequence information) corresponding to the 4-antenna port. Sending the RS, at the same time, the UE can pass the antenna ports 2 and 3 at RE (3, 5) and (3,

6) Receive RS on top, where different antenna ports can use different RE and / or orthogonal codes. Here, RE (3, 5) and (3, 6) are dedicated to the first RS resource.

460. The UE acquires the CSI by measuring the RS.

The UE may obtain the RS transmitted on the first RS resource and the second RS resource. Take the CSI in both cases. For example, the UE may acquire CSI corresponding to antenna ports 0 and 1 by measuring the RS received on the second RS resource. The UE may acquire the CSI corresponding to the antenna ports 0 to 3 by measuring the RS received on the first RS resource.

470. The UE feeds back, to the network side device, a CSI corresponding to the two antenna ports.

The UE may feed back to the network side device CSI information such as RSRP, RSRQ, CQL PMI, RI, etc. corresponding to the 2 antenna ports. For example, the UE may feed back the PMI corresponding to the 2 antenna port to the network side device, so that the network side device determines the PMI used for downlink transmission at the 2 antenna port according to the feedback PMI.

480. The UE feeds back, to the network side device, a CSI corresponding to the 4 antenna port.

The UE may feed back to the network side device CSI information such as RSRP, RSRQ, CQL PMI, RI, etc. corresponding to the 4-antenna port. For example, the UE may feed back the PMI corresponding to the 4 antenna port to the network side device, so that the network side device can determine the PMI used for downlink transmission at the 4 antenna port according to the feedback PMI.

Since the REs corresponding to the multiple RS resources overlap, the total number of REs required to transmit the RS to the UE is smaller than the sum of the RE numbers corresponding to all the RS resources. For example, in the embodiment of FIG. 4, in one PRB, the network side device only needs to send 4 REs to the UE, and the UE can measure the CSI corresponding to the 2 antenna ports based on the assumption of the 2 antenna port, and can be based on the 4 antennas. The port hypothesis measures the CSI corresponding to the 4-antenna port without 6 REs, saving the overhead of RS.

Optionally, as another embodiment, as shown in FIG. 2E, the RE corresponding to the first group of RS resources includes (9, 5), (9, 6), (3, 5), and (3, 6), The RE corresponding to the two sets of RS resources includes (9, 5), (9, 6), (8, 5), and (8, 6), which differs from the embodiment of FIG. 4 in that the part between the two sets of RSs The REs overlap, and the specific embodiment is similar to the embodiment of FIG. 4, and details are not described herein again.

Alternatively, as another embodiment, 440 and 450 of Fig. 4 may be performed by two network side devices, respectively. For example, the first network side device transmits an RS to the UE on the overlapping RE, and the second network side device transmits the RS to the UE on the non-overlapping RE.

Figure 5 is a schematic diagram of a transmission RS procedure in accordance with another embodiment of the present invention.

With the advancement of technology, in order to improve the transmission efficiency of the system, CoMP technology has been proposed. Different from the traditional communication system, one UE is only served by one network side device. In a system to which CoMP technology is applied, one UE can be served by multiple network side devices, for example, the first network side device and the second network side device. Sending a signal to the UE, where the sending work of the two network side devices The rates may be the same or different, that is, corresponding to a homogeneous network and a heterogeneous network (Heterogeneous Network). For a scenario in which the CoMP technology is introduced, the system (for example, a central controller for controlling multiple network side devices or a certain primary network side device) may send multiple RSs to the UE through multiple network side devices, so as to facilitate multiple acquisitions. The CSI corresponding to the network side device.

In the scenario of CoMP technology, a central controller (not shown) or a certain primary network side device (e.g., one of the multiple network side devices) controls a plurality of network side devices to simultaneously transmit downlink signals to the UE. An embodiment of the present invention is described by taking an example in which a plurality of RS resources include an RS resource corresponding to the first network side device and an RS resource corresponding to the second network side device. In this embodiment, the RE used by the first network side device to transmit the RS and the RE used by the second network side device to send the RS may overlap at the same time frequency resource position in different frames.

510. The first network side device determines an RE for sending the RS.

The central controller of the first network side device or the primary network side device of the CoMP learns the RE for transmitting the RS, and may also select the RE for transmitting the RS according to a preset (or configuration). The method for determining the RS is similar to that of FIG. 4, and details are not described herein again.

515. The second network side device determines an RE for sending the RS. Similar to the method of 410 of FIG. 4, it will not be described here.

520. The first network side device sends, to the UE, RE information and configuration information of the RS resource corresponding to the first network side device. Similar to the method of 420 of FIG. 4, details are not described herein again.

525. The second network side device sends, to the UE, RE information and configuration information of the RS resource corresponding to the second network side device. Similar to the method of 420 of FIG. 4, details are not described herein again.

530. The UE determines an RE for receiving the RS.

The UE may determine an RE for receiving the RS based on the RE information and the configuration information.

It should be understood that, in the embodiment of the present invention, the manner of sending the RE information and the configuration information is not limited. For example, the first network side device may send the RE information and the configuration information of the second network side device to the UE or send the first information to the UE by the central control node. RE information and configuration information of a network side device and a second network side device.

540. The first network side device sends an RS to the UE.

For example, the first network side device may follow configuration information (eg, time information, power information, and sequence information) corresponding to the first network side device. For example, referring to FIG. 2F, the system controls the first network side device in the RE (9). 5) and (9, 6) send the RS to the UE, and at the same time, the UE can be in the RE (9, 6) and (9, 6) receive RS. The REs (9, 5) and (9, 6) corresponding to the first network side device and the REs (9, 5) and (9, 6) corresponding to the second network side device are overlapping REs of the two RS resources.

550. The second network side device sends an RS to the UE.

For example, the second network side device may be configured according to configuration information (eg, time information, power information, and sequence information) corresponding to the second network side device. For example, referring to FIG. 2F, the system controls the second network side device at the RE (3, 5) and (3, 6) send the RS to the UE, and at the same time, the UE can receive the RS on RE (3, 5) and (3, 6).

560, obtaining CSI by measuring RS.

The UE can obtain the CSI in both cases by measuring the RSs transmitted on the first RS resource and the second RS resource. Specifically, the UE can obtain the joint channel information corresponding to the first network side device and the second network side device by measuring the RS on the first RS resource, and then feed back to the network side device; by measuring the second RS resource. The RS can obtain channel information corresponding only to the first network side device, and feed back to the network side device. In this way, the network side device can reasonably schedule the first network side device to send a downlink signal to the UE according to the CSI corresponding to the first network side device or the joint CSI corresponding to the first network side device and the second network side device, or The scheduling of the first network side device and the second network side device jointly sends a downlink signal to the UE.

570. The UE sends the CSI to the first network side device.

The UE may feed back to the first network side device CSI information such as RSRP, RSRQ, CQL PMI, RI, etc. corresponding to the first network side device. For example, the UE may feed the PMI corresponding to the first network side device to the first network side device, so that the first network side device determines, according to the fed PMI, the PMI used by the first network side device to transmit the downlink signal to the UE.

580. The UE sends the CSI to the second network side device.

The UE may feed back to the second network side device CSI information such as RSRP, RSRQ, CQL PMI, RI, etc. corresponding to the second network side device. For example, the UE may feed the PMI corresponding to the second network side device to the second network side device, so that the second network side device determines, according to the fed PMI, the PMI used by the second network side device to transmit the downlink signal to the UE.

It should be understood that the UE may feed back all CSIs to one of the first network side device and the second network side device.

The method of transmitting the RS according to the embodiment of the present invention has been described above, and the user equipment and the network side device according to the embodiment of the present invention are described below with reference to FIG. 6 and FIG. 7, respectively.

FIG. 6 is a structural schematic diagram of a network side device according to an embodiment of the present invention. Figure 6 net The network side device corresponds to the method of FIG. 1, and details are not described herein again. The network side device 600 includes a determining module 610 and a sending module 620.

The determining module 610 determines at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, each of the reference signal resources corresponding to a first configuration information, and one of the at least two reference signal resources is first The reference signal resource and the at least one second reference signal resource have an overlapping relationship in at least one first time interval, and determine a first configuration corresponding to each of the first reference signal resources in the at least one first time interval information. The sending module 620 sends a reference signal to the user equipment UE on each resource unit of the first reference signal resource according to the first configuration information corresponding to each resource unit in the first reference signal resource in the at least one first time interval. .

According to the embodiment of the present invention, the RS may be sent to the user equipment UE on the overlapping RE according to the configuration information of the at least two RS resources, and the network side device can configure multiple RS resources for the UE, and therefore, the RS resource can be flexibly configured. Thereby, the RS can be transmitted appropriately. In addition, since there are overlaps in the partial REs, the overhead required to transmit the RS is saved.

According to an embodiment of the present invention, the determining module 610 determines, according to the overlapping relationship between the first reference signal resource and the at least one second reference signal resource, each of the first reference signal resources in the at least one first time interval. The first configuration information corresponding to the resource unit.

According to an embodiment of the present invention, the determining module 610, for each overlapping resource unit that overlaps with the at least one second reference signal resource in the first reference signal resource, includes the overlapping resource unit and includes the number of resource units. The first configuration information corresponding to the least reference signal resource is determined as the first configuration information of the overlapping resource unit.

According to the embodiment of the present invention, the determining module 610 includes the overlap in the at least one second reference signal resource if the resource elements of the first reference signal resource and the at least one second reference signal resource are different. The first configuration information corresponding to the reference signal resource of the resource unit is determined as the first configuration information of the overlapping resource unit.

According to an embodiment of the present invention, for each overlapping resource unit that overlaps with the at least one second reference signal resource in the first reference signal resource, the determining module 610 uses the first configuration information corresponding to the first reference signal resource. Or the first configuration information corresponding to one of the at least one second reference signal resource is determined as the first configuration information of the overlapping resource unit; and there is no overlap between the first reference signal resource and the at least one second reference signal resource Each non-overlapping resource unit, the determining module 610 includes the first reference signal resource and the at least one second reference signal resource The first configuration information corresponding to the reference signal resource of the non-overlapping resource unit is determined as the first configuration information of the non-overlapping resource unit.

Optionally, in another embodiment, the sending module 620 further sends the second configuration information of the at least two reference signal resources to the UE before sending the reference signal to the UE, or sends the at least two to the UE. The second configuration information of the reference signal resource and the first configuration information; or, the second configuration information of the at least two reference signal resources is sent to the UE, and for different reference signal resources of the at least two reference signal resources, Sending different types of first configuration information to the UE; or, for the first reference signal resource, transmitting only second configuration information of the first reference signal resource to the UE, and sending the at least one second reference signal resource to the UE Second configuration information and first configuration information.

Optionally, as another embodiment, the determining module 610 determines, according to the resource unit information and the second configuration information of each of the at least two reference signal resources, each of the at least two reference signal resources. The resource unit information of the reference signal resource and the resource unit corresponding to the second configuration information, wherein the sending module 620 further sends the resource unit information of each of the at least two reference signal resources to the UE.

Optionally, as another embodiment, the resource unit information of the at least two reference signal resources is the same, and the determining module 610 is configured according to the same resource unit information and each of the at least two reference signal resources. The second configuration information determines a resource unit corresponding to the second configuration information of each of the at least two reference signal resources, where the sending module 620 further sends the same resource unit information to the UE.

According to an embodiment of the invention, the first reference signal resource comprises all resource elements of the at least one second reference signal resource.

According to an embodiment of the present invention, the determining module 610 determines first configuration information of each resource unit according to how many times each of the overlapping resource units is included by the at least two reference signal resources, wherein The first configuration information of the reference signal resource including the least number of resource units for which the first configuration information is not determined is determined as the first configuration information of the resource unit of the undetermined first configuration information.

According to an embodiment of the present invention, the determining module 610 determines the first configuration information of the first reference signal resource as the first configuration information that there is no overlapping resource unit between the first reference signal resource and the at least one second reference signal resource. And determining first configuration information of one of the at least one second reference signal resource as the first reference signal resource and the at least one second reference signal resource There is a first configuration information of overlapping resource units between one of them.

According to the embodiment of the present invention, the sending module 620 may be configured by using different network side devices, according to the first configuration information corresponding to each resource unit in the first reference signal resource, on each resource unit of the first reference signal resource. A reference signal is sent to the UE. Specifically, different network devices may correspond to different first configuration information, and the sending module 620 may send a reference signal to the UE on the resource unit in the first reference signal resource corresponding to the first configuration information. For example, the network side device 600 may be a central control node, and the reference signals may be sent by different network side devices controlled by the central control node.

According to the embodiment of the present invention, the sending module 620 does not overlap between the first reference signal resource and the at least one second reference signal resource according to the first configuration information of the different reference signal resources by using different network side devices. The reference signal is sent to the UE on the resource unit and the resource unit that overlaps. For example, the network side device 600 may be a central control node, and the reference signals may be sent by different network side devices controlled by the central control node.

Optionally, in another embodiment, the sending module 620 is further configured to perform, according to the transmission time interval in which the resource units of the at least two reference signal resources do not overlap, according to the reference signal transmitted on the overlapping transmission time interval. The first configuration information of the resource, the reference signal is sent to the UE on a resource unit of the reference signal resource transmitted on the transmission time interval that does not overlap.

For the operation and function of each unit of the network side device 600, reference may be made to the embodiment of the method of FIG. 1. To avoid repetition, details are not described herein again.

7 is a structural schematic diagram of a user equipment in accordance with an embodiment of the present invention. The user equipment of FIG. 7 corresponds to the method of FIG. 3, and details are not described herein again. User equipment 700 includes a determination module 710 and a receiving module 720.

The determining module 710 determines at least two reference signal resources, where each of the reference signal resources includes at least one resource unit, each of the reference signal resources corresponding to a first configuration information, and one of the at least two reference signal resources is first The reference signal resource and the at least one second reference signal resource have an overlapping relationship in at least one first time interval, and determine a first configuration corresponding to each of the first reference signal resources in the at least one first time interval information. Receiving module 720, according to the first reference signal, in the at least one first time interval The first configuration information corresponding to each resource unit in the resource receives a reference signal from the network side device on each resource unit of the first reference signal resource.

According to the embodiment of the present invention, the RS may be received from the network side device on the overlapping RE according to the configuration information of the at least two RS resources, and the network side device can configure multiple RS resources for the UE, and therefore, the RS resource can be flexibly configured. Thereby, the RS can be transmitted appropriately. In addition, since some of the REs overlap, the overhead required to transmit the RS is saved.

According to an embodiment of the present invention, the determining module 710 determines, according to the overlapping relationship between the first reference signal resource and the at least one second reference signal resource, each of the first reference signal resources in the at least one first time interval. The first configuration information corresponding to the resource unit.

According to an embodiment of the present invention, for each overlapping resource unit that overlaps with at least one second reference signal resource in the first reference signal resource, the determining module 710 will include the overlapping resource unit and include the number of resource units The first configuration information corresponding to the least reference signal resource is determined as the first configuration information of the overlapping resource unit.

According to an embodiment of the present invention, the determining module 710 includes the overlap in the at least one second reference signal resource if the resource elements of the first reference signal resource and the at least one second reference signal resource are different. The first configuration information corresponding to the reference signal resource of the resource unit is determined as the first configuration information of the overlapping resource unit.

According to an embodiment of the present invention, for each overlapping resource unit that overlaps with the at least one second reference signal resource in the first reference signal resource, the determining module 710 uses the first configuration information corresponding to the first reference signal resource. Or the first configuration information corresponding to one of the at least one second reference signal resource is determined as the first configuration information of the overlapping resource unit; and there is no overlap between the first reference signal resource and the at least one second reference signal resource For each non-overlapping resource unit, the determining module 710 determines, as the non-overlapping resource, the first reference signal resource and the first configuration information corresponding to the reference signal resource of the at least one second reference signal resource that includes the non-overlapping resource unit. The first configuration information of the unit.

Optionally, as another embodiment, before receiving the reference signal from the network side device, the receiving module 720 further receives the second configuration information of the at least two reference signal resources from the network side device, and preset the first configuration information. Or receiving the second configuration information and the first configuration information of the at least two reference signal resources from the network side device; or receiving the second configuration information of the at least two reference signal resources from the network side device, and Different reference signal resources in the at least two reference signal resources, receiving different types of the first type from the network side device Or a configuration information; or, for the first reference signal resource, receiving only the second configuration information of the first reference signal resource from the network side device or not using the first configuration information received from the network side device, and from the network side The device receives the second configuration information and the first configuration information of the at least one second reference signal resource.

Optionally, as another embodiment, the receiving module 720 further receives the resource unit information of each of the at least two reference signal resources from the network side device, where the determining module 610 is specifically configured to use according to the foregoing at least two The resource unit information and the second configuration information of each of the reference signal resources determine a resource unit corresponding to the resource unit information and the second configuration information of each of the at least two reference signal resources .

Optionally, in another embodiment, the receiving module 720 further receives the same resource unit information from the network side device if the resource unit information of the at least two reference signal resources is the same, and the determining module 720 is specifically used to Determining, according to the same resource unit information and second configuration information of each of the at least two reference signal resources, corresponding to second configuration information of each of the at least two reference signal resources Resource unit.

According to an embodiment of the present invention, the determining module 710 determines first configuration information of each resource unit according to how many times each of the overlapping resource units is included by the at least two reference signal resources, wherein The first configuration information of the reference signal resource including the least number of resource units for which the first configuration information is not determined is determined as the first configuration information of the resource unit of the undetermined first configuration information.

According to an embodiment of the present invention, the determining module 710 determines the first configuration information of the first reference signal resource as the first configuration information that there is no overlapping resource unit between the first reference signal resource and the at least one second reference signal resource. And determining, by the first configuration information of one of the at least one second reference signal resource, first configuration information that there is an overlapping resource unit between the first reference signal resource and the at least one second reference signal resource.

According to the embodiment of the present invention, the receiving module 720 may receive, on each resource unit of the first reference signal resource, a device from a different network side device according to the first configuration information corresponding to each resource unit in the first reference signal resource. Reference signal. Specifically, different network devices may correspond to different first configuration information, and the receiving module 720 may be in the first configuration information. A reference signal from a different network side device is received on the resource unit in the first reference signal resource corresponding to the information.

According to the embodiment of the present invention, the receiving module 720 respectively does not have overlapping resource units and overlaps between the first reference signal resource and the at least one second reference signal resource according to the first configuration information of the different reference signal resources. The reference signal from different network side devices is received on the resource unit.

Optionally, in another embodiment, the receiving module 720 is further configured to perform, according to the transmission time interval that the overlapping of the resource elements of the at least two reference signal resources are not overlapped, according to the reference signal that is transmitted on the overlapping transmission time interval. The first configuration information of the resource receives the reference signal from the network side device on a resource unit of the reference signal resource transmitted on the transmission time interval that does not overlap.

For the operation and function of each unit of the user equipment 700, reference may be made to the embodiment of the method of FIG. 3. To avoid repetition, details are not described herein again.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technology solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience of the description and the cleaning process, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. Alternatively, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, device or single The indirect coupling or communication connection of the element can be electrical, mechanical or other form. The components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including A number of instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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

Claims

Rights request

1. A method of transmitting reference signals, characterized by including:

Determine at least two reference signal resources, wherein each reference signal resource includes at least one resource unit, each reference signal resource corresponds to first configuration information, and the first reference signal among the at least two reference signal resources The resource has an overlapping relationship with the second reference signal resource among the at least two reference signal resources within the first time interval;

Determine the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval;

In the first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, send a message to the user equipment UE on each resource unit of the first reference signal resource. reference signal.

2. The method according to claim 1, wherein the determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

Determine, according to the overlapping relationship between the first reference signal resource and at least one second reference signal resource, the first resource unit corresponding to each resource unit in the first reference signal resource within the first time interval. Configuration information.

3. The method according to claim 2, characterized in that, based on the overlapping relationship between the first reference signal resource and the second reference signal resource, determining the The first configuration information corresponding to each resource unit in the first reference signal resource includes: for each overlapping resource unit in the first reference signal resource that overlaps with at least one second reference signal resource, The first configuration information corresponding to the reference signal resource that contains the overlapping resource unit and contains the smallest number of resource units is determined as the first configuration information of the overlapping resource unit.

4. The method according to claim 3, characterized in that, when the overlapping resource units of the first reference signal resource and at least one second reference signal resource are not the same, the overlapping resources will be included in the overlapping resource units. The first configuration information corresponding to the reference signal resource that has the smallest number of units and contains the smallest number of resource units is determined to be the first configuration information of the overlapping resource unit including:

The first configuration information corresponding to the reference signal resource including the overlapping resource unit in the at least one second reference signal resource is determined as the first configuration information of the overlapping resource unit.

5. The method according to claim 1, wherein the determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

For each overlapping resource unit in the first reference signal resource that overlaps with at least one second reference signal resource, the first configuration information corresponding to the first reference signal resource or the at least one second reference signal resource is The first configuration information corresponding to one of the signal resources is determined as the first configuration information of the overlapping resource unit;

For each non-overlapping resource unit in which there is no overlap between the first reference signal resource and the at least one second reference signal resource, all the elements included in the first reference signal resource and the at least one second reference signal resource are The first configuration information corresponding to the reference signal resources of the non-overlapping resource unit is determined as the first configuration information of the non-overlapping resource unit.

6. The method according to any one of claims 1 to 5, characterized in that, before sending the reference signal to the user equipment UE, the method further includes:

Send second configuration information of the at least two reference signal resources to the UE; or,

Send the second configuration information of the at least two reference signal resources and the first configuration information of the at least two reference signal resources to the UE;

or,

Send second configuration information of the at least two reference signal resources to the UE, and send different types of first configuration information to the UE for different reference signal resources in the at least two reference signal resources;

or,

For the first reference signal resource, only the second configuration information of the first reference signal resource is sent to the UE, and the second configuration information of the at least one second reference signal resource and the second reference signal resource are sent to the UE. 1. Configuration information.

7. The method according to any one of claims 1 to 5, characterized in that the determining of at least two reference signal resources includes:

The resource unit information and the second configuration of each of the at least two reference signal resources are determined according to the resource unit information and the second configuration information of each of the at least two reference signal resources. The resource unit corresponding to the information,

The method also includes: Resource unit information of each reference signal resource in the at least two reference signal resources is sent to the UE.

8. The method according to any one of claims 1 to 5, characterized in that the resource unit information of the at least two reference signal resources is the same, and the determining of the at least two reference signal resources includes:

Determine a second configuration with each of the at least two reference signal resources based on the same resource unit information and second configuration information of each of the at least two reference signal resources. The resource unit corresponding to the information,

The method also includes:

Send the same resource unit information to the UE.

9. The method according to claim 2, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the method according to the first reference signal resource and The overlapping relationship between at least one second reference signal resource and determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

Determine the first configuration information of each resource unit according to the number of times each resource unit in the overlapping resource units is included by the at least two reference signal resources from most to least, including resources for which the first configuration information is not determined The first configuration information of the reference signal resource with the smallest number of units is determined as the first configuration information of the resource unit for which the first configuration information is not determined.

10. The method according to claim 2, characterized in that, when the first reference signal resource includes all resource units of the second reference signal resource, the method according to the first reference signal resource and at least one The overlapping relationship between the second reference signal resources and determining the first configuration information corresponding to each resource unit in the first reference signal resources within the first time interval includes:

Determine the first configuration information of the first reference signal resource as the first configuration information of a resource unit in which there is no overlap between the first reference signal resource and at least one second reference signal resource;

The first configuration information of one of the at least one second reference signal resources is determined as the first configuration information of a resource unit in which there is overlap between the first reference signal resource and one of the at least one second reference signal resource.

11. The method according to any one of claims 1 to 10, characterized in that: According to the first configuration information corresponding to each resource unit in the first reference signal resource, sending a reference signal to the user equipment UE on each resource unit of the first reference signal resource includes:

Through different network side devices, according to the first configuration information corresponding to each resource unit in the first reference signal resource, a reference signal is sent to the user equipment UE on each resource unit of the first reference signal resource. .

12. The method according to claim 11, characterized in that, through different network side devices, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in the first Sending a reference signal to the user equipment UE on each resource unit of a reference signal resource includes:

Different network devices correspond to different first configuration information, and a reference signal is sent to the user equipment UE on the resource unit in the first reference signal resource corresponding to the first configuration information.

13. The method according to any one of claims 1 to 12, characterized in that the first configuration information includes at least one of power information, sequence information and time information.

14. The method according to any one of claims 6 to 8, characterized in that the second configuration information includes antenna port information.

15. A method of transmitting reference signals, characterized by including:

Determine at least two reference signal resources, wherein each reference signal resource includes at least one resource unit, each reference signal resource corresponds to a piece of first configuration information, and one of the at least two reference signal resources is a first The reference signal resource and at least one second reference signal resource have an overlapping relationship within the first time interval;

Within the first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, receive from the network side device on each resource unit of the first reference signal resource. reference signal.

16. The method according to claim 15, wherein the determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

According to the overlapping relationship between the first reference signal resource and at least one second reference signal resource, determining each resource in the first reference signal resource within the first time interval The first configuration information corresponding to the unit.

17. The method according to claim 16, characterized in that, based on the overlapping relationship between the first reference signal resource and at least one second reference signal resource, determining in the first time interval The first configuration information corresponding to each resource unit in the first reference signal resource includes:

For each overlapping resource unit in the first reference signal resource that overlaps with at least one second reference signal resource, the reference signal resource containing the overlapping resource unit and containing the smallest number of resource units will correspond to The first configuration information of is determined as the first configuration information of the overlapping resource unit.

18. The method according to claim 17, characterized in that, when the overlapping resource units of the first reference signal resource and at least one second reference signal resource are not the same, the overlapping resources will be included in the overlapping resource units. The first configuration information corresponding to the reference signal resource that has the smallest number of units and contains the smallest number of resource units is determined to be the first configuration information of the overlapping resource unit including:

19. The method according to claim 15, wherein the determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

20. The method according to any one of claims 15 to 19, characterized in that, before receiving the reference signal from the network side device, the method further includes:

Receive second configuration information of the at least two reference signal resources from the network side device, and set the first configuration information in advance;

or, Receive second configuration information of the at least two reference signal resources and first configuration information of the at least two reference signal resources from the network side device;

or,

Receive second configuration information of the at least two reference signal resources from the network side device, and receive different types of first reference signal resources from the network side device for different reference signal resources in the at least two reference signal resources. configuration information;

or,

For the first reference signal resource, only receive second configuration information of the first reference signal resource from the network side device or do not use the first configuration information received from the network side device, and from the network The side device receives second configuration information and first configuration information of the at least one second reference signal resource.

21. The method according to any one of claims 15 to 19, further comprising:

Receive resource unit information of each reference signal resource in the at least two reference signal resources from the network side device,

The determining of at least two reference signal resources includes:

The resource unit information and the second configuration of each of the at least two reference signal resources are determined according to the resource unit information and the second configuration information of each of the at least two reference signal resources. The resource unit corresponding to the information.

22. The method according to any one of claims 15 to 19, characterized in that the resource unit information of the at least two reference signal resources is the same, and the method further includes:

receiving the same resource unit information from the network side device,

The determining of at least two reference signal resources includes:

Determine a second configuration with each of the at least two reference signal resources based on the same resource unit information and second configuration information of each of the at least two reference signal resources. The resource unit corresponding to the information.

23. The method according to claim 16, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the method according to the first reference signal resource and The overlapping relationship between at least one second reference signal resource and determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes: Determine the first configuration information of each resource unit according to the number of times each resource unit in the overlapping resource units is included by the at least two reference signal resources from most to least, including resources for which the first configuration information is not determined The first configuration information of the reference signal resource with the smallest number of units is determined as the first configuration information of the resource unit for which the first configuration information is not determined.

24. The method according to claim 16, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the method according to the first reference signal resource and The overlapping relationship between at least one second reference signal resource and determining the first configuration information corresponding to each resource unit in the first reference signal resource within the first time interval includes:

25. The method according to claims 25 to 24, characterized in that, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in the first reference signal resource Each resource unit receives reference signals from network side equipment, including:

According to the first configuration information corresponding to each resource unit in the first reference signal resource, the reference signal from different network side devices is received on each resource unit of the first reference signal resource.

26. The method according to claim 25, characterized in that, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in each of the first reference signal resources The reference signals from different network side devices are received on the resource unit, including:

Different network devices correspond to different first configuration information, and the reference signals from the different network side devices are received on resource units in the first reference signal resources corresponding to the first configuration information.

27. The method according to any one of claims 15 to 26, characterized in that the first configuration information includes at least one of power information, sequence information and time information.

28. The method according to any one of claims 20 to 22, characterized in that: The second configuration information includes antenna port information.

29. A network-side device for transmitting reference signals, characterized by including:

Determining module, configured to determine at least two reference signal resources, wherein each reference signal resource includes at least one resource unit, each reference signal resource corresponds to a piece of first configuration information, and the at least two reference signal resources One of the first reference signal resources and at least one second reference signal resource have an overlapping relationship within the first time interval, and it is determined that each resource unit in the first reference signal resource corresponds to the first configuration information; a sending module, configured to, within the first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in the first reference signal resource Send a reference signal to the user equipment UE on each resource unit.

30. The network side device according to claim 29, wherein the determining module is specifically configured to determine based on the overlapping relationship between the first reference signal resource and at least one second reference signal resource. First configuration information corresponding to each resource unit in the first reference signal resource within the first time interval.

31. The network side device according to claim 30, characterized in that, the determining module is specifically configured to determine whether each of the first reference signal resources overlaps with at least one second reference signal resource. The overlapping resource unit determines the first configuration information corresponding to the reference signal resource that contains the overlapping resource unit and contains the smallest number of resource units as the first configuration information of the overlapping resource unit.

32. The network side device according to claim 31, characterized in that the determining module is specifically used in the case where the overlapping resource units of the first reference signal resource and at least one second reference signal resource are different. Next, the first configuration information corresponding to the reference signal resource including the overlapping resource unit in the at least one second reference signal resource is determined as the first configuration information of the overlapping resource unit.

33. The network side device according to claim 29, characterized in that, for each overlapping resource unit in the first reference signal resource that overlaps with at least one second reference signal resource, the determination The module is specifically configured to determine the first configuration information corresponding to the first reference signal resource or the first configuration information corresponding to one of at least one second reference signal resource as the first configuration information of the overlapping resource unit; and for For each non-overlapping resource unit that does not overlap between the first reference signal resource and at least one second reference signal resource, the determining module is specifically configured to combine the first reference signal resource and at least one second reference signal resource. Reference signal resources contain all The first configuration information corresponding to the reference signal resources of the non-overlapping resource unit is determined as the first configuration information of the non-overlapping resource unit.

34. The network side device according to claim 30, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the determining module is specifically configured to determine the The number of times each resource unit in the stack of resource units is included by the at least two reference signal resources is determined from most to least, and the first configuration information of each resource unit is determined, including the resource units for which the first configuration information is not determined. The first configuration information of the reference signal resources with the smallest number is determined as the first configuration information of the resource unit for which the first configuration information is not determined.

35. The network side device according to claim 30, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the determining module is specifically configured to use the The first configuration information of the first reference signal resource is determined as the first configuration information of a resource unit in which there is no overlap between the first reference signal resource and at least one second reference signal resource; and the at least one first reference signal resource is The first configuration information of one of the two reference signal resources is determined as the first configuration information of the resource unit in which there is overlap between the first reference signal resource and one of the at least one second reference signal resource.

36. The network side device according to any one of claims 29 to 35, characterized in that the first configuration information includes at least one of power information, sequence information and time information.

37. A user equipment for transmitting reference signals, characterized by: including:

Determining module, configured to determine at least two reference signal resources, wherein each reference signal resource includes at least one resource unit, each reference signal resource corresponds to a piece of first configuration information, and the at least two reference signal resources One of the first reference signal resources and at least one second reference signal resource have an overlapping relationship within the first time interval, and it is determined that each resource unit in the first reference signal resource corresponds to first configuration information; a receiving module, configured to, within the first time interval, according to the first configuration information corresponding to each resource unit in the first reference signal resource, in the first reference signal resource The reference signal is received from the network side device on each resource unit.

38. The user equipment according to claim 37, wherein the determining module is specifically configured to determine based on the overlapping relationship between the first reference signal resource and at least one second reference signal resource. First configuration information corresponding to each resource unit in the first reference signal resource within the first time interval.

39. The user equipment according to claim 38, characterized in that, the determining module is specifically configured to determine whether there is an overlap between the first reference signal resource and at least one second reference signal resource. Resource unit: determine the first configuration information corresponding to the reference signal resource that contains the overlapping resource unit and contains the smallest number of resource units as the first configuration information of the overlapping resource unit.

40. The user equipment according to claim 39, characterized in that, the determining module is specifically used in the case where the overlapping resource units of the first reference signal resource and at least one second reference signal resource are not the same. , determine the first configuration information corresponding to the reference signal resource including the overlapping resource unit in the at least one second reference signal resource as the first configuration information of the overlapping resource unit.

41. The user equipment according to claim 37, characterized in that, for each overlapping resource unit in the first reference signal resource that overlaps with at least one second reference signal resource, the determining module Specifically, it is used to determine the first configuration information corresponding to the first reference signal resource or the first configuration information corresponding to one of at least one second reference signal resource as the first configuration information of the overlapping resource unit; for the For each non-overlapping resource unit that does not overlap between the first reference signal resource and the at least one second reference signal resource, the determining module is specifically configured to combine the first reference signal resource and the at least one second reference signal. The first configuration information corresponding to the reference signal resource including the non-overlapping resource unit in the resource is determined as the first configuration information of the non-overlapping resource unit.

42. The user equipment according to claim 37, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the determining module is specifically configured to determine the The number of times each resource unit in the resource units is included by the at least two reference signal resources is from most to least, and the first configuration information of each resource unit is determined, including the number of resource units for which the first configuration information is not determined. The first configuration information of the reference signal resource with the smallest number is determined as the first configuration information of the resource unit for which the first configuration information is not determined.

43. The user equipment according to claim 37, wherein when the first reference signal resource includes all resource units of the at least one second reference signal resource, the determining module is specifically configured to use the The first configuration information of the first reference signal resource is determined as the first configuration information of the resource unit in which there is no overlap between the first reference signal resource and the at least one second reference signal resource; and the at least one second reference signal resource is The first configuration information of one of the reference signal resources is determined to exist between the first reference signal resource and one of at least one second reference signal resource. The first configuration information in the overlapping resource unit.

44. The user equipment according to any one of claims 37 to 43, characterized in that the first configuration information includes at least one of power information, sequence information and time information.