CN107113736A - Communication means and device - Google Patents

Communication means and device Download PDF

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Publication number
CN107113736A
CN107113736A CN201480084392.2A CN201480084392A CN107113736A CN 107113736 A CN107113736 A CN 107113736A CN 201480084392 A CN201480084392 A CN 201480084392A CN 107113736 A CN107113736 A CN 107113736A
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parameter
power
rho
base station
transmit power
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CN201480084392.2A
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CN107113736B (en
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程型清
吴海
吴强
龚政委
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters

Abstract

A kind of communication means and device, method include：Base station obtains the power parameter and parameter δ of the first user equipment (UE)2,ue1；The power parameter of first UE includes：With the first reference signal transmission power；Base station described in the base station sends the power parameter and the parameter δ of the first UE to the first UE2,ue1；The base station determines first transmission power according to the power parameter of the first UE；The base station sends signal using first transmission power to the first UE.

Description

Communication method and device Technical Field
The present invention relates to the field of communications, and in particular, to a communication method and apparatus.
Background
In an existing LTE (Long Term Evolution) system, an OFDMA (Orthogonal Frequency Division Multiple Access) technology is generally used for downlink. In order to effectively improve the throughput at the cell center and the cell edge, the NOMA (Non-Orthogonal Multiple Access) technology is a potential candidate technology. When using NOMA for communication, a base station allocates different powers to different User Equipments (UEs), but different UEs may use the same frequency resource.
Two or more UEs that communicate with a base station using the same time-frequency resource block are called paired UEs. For example, when the NOMA technology is adopted, the UE1 and the UE2 use the same time-frequency resource block to communicate with the base station, and the UE2 and the UE1 are paired UEs. The base stations transmit signals to UE1 and UE2 with different transmit powers. There may be interference between the downlink signal of UE1 and the downlink signal of UE 2. Downlink, generally, refers to the direction from the base station to the UE. In order to effectively extract the downlink signal of the UE1, the UE1 needs to cancel the interference of the downlink signal of the UE 2. In the prior art, the UE1 cannot acquire information related to a downlink signal of the UE2, and cannot communicate by using the NOMA technology.
Disclosure of Invention
The embodiment of the invention provides a communication method and a communication device, which realize communication by using a NOMA technology.
In a first aspect, an embodiment of the present invention provides a base station, which serves at least two pieces of user equipment UE, where the at least two pieces of UE include a first UE and a second UE, and includes: a processing unit for determining a power parameter and a parameter δ of the first UE2,ue1(ii) a Wherein the power parameter of the first UE comprises: UE-specific parameters of the first UE cell-specific parameters of the first UE and reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE; a transmitting unit for transmitting the first UE with the second UEPower parameter of a UE and said parameter delta2,ue1(ii) a The processing unit is further configured to determine the first transmit power according to a power parameter of the first UE; the sending unit is further configured to send downlink data of the first UE using the first transmit power.
In a first possible implementation manner of the first aspect, the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or, the parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2Ratio, where the ρue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the processing unit is further configured to obtain an adjustment parameter δ of the first transmit power1,ue1(ii) a The sending unit is further configured to send an adjustment parameter δ of the first transmit power to the first UE1,ue1(ii) a The processing unit is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the adjustment parameter δ of the first transmit power is1,ue1Is an adjusted value of the first transmit power.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation mannerIn this way, the processing unit is specifically configured to adjust the parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the first possible implementation manner of the first aspect, in a fifth possible implementation manner, the processing unit is specifically configured to determine the ρ according to the sumA,ue1And the rhoB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the first aspect, or any one of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner, the processing unit is further configured to determine the power parameter and the parameter δ of the first UE according to the power parameter of the first UE2,ue1Determining the second transmission power; the sending unit is further configured to send downlink data of the second UE using the second transmit power.
In a second aspect, an embodiment of the present invention provides a communication method, which is applied to a communication network including at least two user equipments, UEs, where the at least two UEs include a first UE and a second UE, and the method includes:
the base station acquires the power parameter and the parameter delta of the first UE2,ue1(ii) a Wherein the power parameter of the first UE comprises: UE-specific parameters of the first UE cell-specific parameters of the first UE and reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE;
the base station sends the power parameter and the parameter delta of the first UE to the first UE2,ue1；
The base station determines the first transmission power according to the power parameter of the first UE;
and the base station transmits the downlink signal of the first UE by using the first transmission power.
In a first possible implementation manner of the second aspect, the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or, the parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2Ratio of where said pue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the method further includes:
the base station obtains an adjustment parameter delta of the first transmission power1,ue1(ii) a The base station sends an adjustment parameter delta of the first transmission power to the first UE1,ue1(ii) a The base station determining a first transmit power according to the power parameter of the first UE includes: the base station adjusts the parameter delta according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power.
With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner, the adjustment parameter δ of the first transmission power is1,ue1Is an adjusted value of the first transmit power.
With reference to the second possible implementation manner of the second aspect, in a fourth possible implementation mannerIn an implementation manner, the base station adjusts the parameter δ according to the power parameter of the first UE and the adjustment parameter δ of the first transmit power1,ue1Determining the first transmit power comprises: the base station adjusts a parameter delta according to the sum of the first transmission power and the second transmission power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the first possible implementation manner of the second aspect, in a fifth possible implementation manner, the determining, by the base station, the first transmit power according to the power parameter of the first UE includes: the base station determines the p according to the sumA,ue1And the rhoB,ue1(ii) a The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the second aspect, or any one of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner, the base station further includes that the base station performs the processing according to the power parameter of the first UE and the parameter δ2,ue1Determining the second transmission power; and the base station sends the second downlink data by using the second transmitting power.
In a third aspect, an embodiment of the present invention provides a first user equipment UE, where the first UE communicates with a base station, the base station serves at least two UEs, and the at least two UEs include the first UE and a second UE, and the method includes: a receiving unit, configured to receive the power parameter and the parameter δ of the first UE sent by the base station2,ue1(ii) a Wherein the power parameter of the first UE comprises: a cell-specific parameter of the first UE and a reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission of downlink data of the second UEA transmission power; a processing unit, configured to determine the first transmit power according to a power parameter of the first UE; the processing unit is further configured to determine a power parameter of the first UE and the parameter δ2,ue1Determining the second transmit power; the receiving unit is further configured to receive a signal sent by the base station, where the received signal includes downlink data of the first UE; the processing unit is further configured to obtain downlink data of the first UE from the signal received by the receiving unit according to the first transmit power and the second transmit power.
In a first possible implementation manner of the third aspect, the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or, the parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2Ratio, where the ρue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation manner, the receiving unit is further configured to receive an adjustment parameter δ of the first transmission power sent by the base station1,ue1(ii) a The processing unit is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the adjustment of the first transmission powerParameter delta1,ue1Is an adjusted value of the first transmit power.
With reference to the second possible implementation manner of the third aspect, in a fourth possible implementation manner, the processing unit is specifically configured to adjust the parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the second possible implementation manner of the third aspect, in a fourth possible implementation manner, the processing unit is specifically configured to determine the ρ according to the sumA,ue1And the rhoB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In a fourth aspect, an embodiment of the present invention provides a communication method, which is applicable to a communication network including at least two user equipments, UEs, where the at least two UEs include a first UE and a second UE, and the method includes: a first UE receives a power parameter and a parameter delta of the first UE sent by a base station2,ue1(ii) a Wherein the power parameter of the first UE comprises: a cell-specific parameter of the first UE and a reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of the first transmit power to a second transmit power, where the first transmit power is a transmit power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE; the first UE determines the first transmission power according to the power parameter of the first UE; the first UE according to the first transmission power and the parameter delta2,ue1Determining the second transmit power; the first UE receives a signal sent by the base station, wherein the received signal comprises downlink data of the first UE; and the first UE acquires the downlink data of the first UE from the received signal according to the first transmitting power and the second transmitting power.
In a first possible implementation manner of the fourth aspect, the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or, the parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2Ratio, where the ρue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the method further includes: the first UE receives the adjustment parameter delta of the first transmission power sent by the base station1,ue1(ii) a The first UE determining a first transmit power according to the power parameter of the first UE comprises: the first UE adjusts the parameter delta according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power.
With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the adjustment parameter δ of the first transmission power is1,ue1Is an adjusted value of the first transmit power.
With reference to the second possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the first UE adjusts the parameter δ according to the power parameter of the first UE and the adjustment parameter δ of the first transmit power1,ue1Determining the first transmit power comprises: the first UE adjusts the parameter delta according to the first transmission power and the first transmission power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a The first UE according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
With reference to the first possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the determining, by the first UE, the first transmit power according to the power parameter of the first UE includes: the first UE determines the p according to the sumA,ue1And the rhoB,ue1(ii) a The first UE according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In a fifth aspect, an embodiment of the present invention provides a communication system, including a base station and at least two user equipments, where the base station serves the at least two UEs, the at least two UEs include a first UE and a second UE, the base station is the base station included in the first aspect, and the first UE is the first UE included in the third aspect.
In the embodiment of the invention, a base station acquires a power parameter and a parameter delta of first User Equipment (UE)2,ue1And the power parameter and the parameter delta of the first user equipment UE2,ue1Sending the power parameter to the first UE, so that the first UE can obtain the first transmission power according to the power parameter of the first UE, and according to the parameter delta2,ue1And the first transmit power determines a second transmit power. The first UE can eliminate the interference of the downlink data of the second UE according to the second transmitting power, and the NOMA technology is adopted for communication.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first UE according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart of a communication method according to a fifth embodiment of the present invention;
fig. 5 is a flowchart illustrating a communication method according to a seventh embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The UE in the embodiment of the present invention may be, for example, a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device having a Wireless communication function, an in-vehicle device, a wearable device, a computing device, or another processing device connected to a Wireless modem.
A base station in embodiments of the present invention may refer, for example, to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert a Protocol (IP) packet between a received air frame and a network, and may be used as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an IP Protocol network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in GSM (Global System for Mobile Communication) or CDMA (Code Division Multiple Access), a Base Station (NodeB) in WCDMA (Wideband CDMA), or an evolved Node B (NodeB) in LTE (eNB or e-NodeB), which is not limited in the embodiment of the present invention.
The embodiment of the invention discloses a communication method and a communication device.A base station informs first UE of information related to first transmitting power and second transmitting power, and the first UE acquires the information related to the first transmitting power and the second transmitting power, so that the first UE eliminates the interference of downlink data of the second UE according to the information related to the first transmitting power and the second transmitting power, and realizes the communication by using NOMA. The first transmission power is the transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE. The details will be described below.
For better understanding of the present invention, a description will be given below of a network architecture used in the embodiments of the present invention. Referring to fig. 1, fig. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present invention. As shown in fig. 1, the network includes a base station and two or more UEs, only a first UE and a second UE are shown. The first UE and the second UE use the same time-frequency resource block to communicate with the base station, and the downlink data of the first UE and the downlink data of the second UE have different transmitting powers. The base station is any one of the base stations in the embodiments of the present invention, and the first UE is any one of the first UEs in the embodiments of the present invention.
Based on the network architecture shown in fig. 1, an embodiment of the present invention discloses a base station, which serves at least two UEs, where the at least two UEs include a first UE and a second UE. Referring to fig. 2, fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in fig. 2, the base station includes: a processing unit 201 and a transmitting unit 202. Wherein the processing unit may be a processor and the sending unit may be a transmitter.
Processing unit 201 power parameter and parameter δ for a first user equipment UE2,ue1；
A sending unit 202 for sending to the secondA UE sends the power parameter and the parameter delta of the first UE2,ue1；
The processing unit 201 is further configured to determine the first transmit power according to a power parameter of the first UE;
the sending unit 202 is further configured to send downlink data of the first UE using the first transmit power.
In this embodiment of the present invention, the power parameter of the first UE includes: the UE-specific parameter of the first UE is a cell-specific parameter of the first UE and a reference signal transmit power of the first UE. The parameter delta2,ue1A parameter related to a ratio of the first transmit power to a second transmit power, where the first transmit power is a transmit power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE.
In an alternative embodiment, the UE-specific parameter of the first UE provided by the first higher layer, the cell-specific parameter of the first UE provided by the first higher layer; the first higher layer is a higher layer of the first UE, and may be a base station or other network entity of the first UE. P of different UEs in the same cellAMay not be the same, but PBThe same as the reference signal transmission power.
In an alternative embodiment, the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power.
In an alternative embodiment, the parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2A ratio. Wherein the rhoue1A ratio of Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to EPRE of a cell-specific reference signal of the first UE, where ρ is the ratioue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different Orthogonal Frequency Division Multiplexing (OFDM) symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
In an alternative embodiment, the pA,ue1And the rhoB,ue1The corresponding OFDM symbol index is as in table one or table two:
watch 1
Watch two
Wherein n issDenoted is the slot index (slot index) in one radio frame (radio frame).
In an alternative embodiment, the pA,ue2And ρB,ue2The corresponding OFDM symbol index is as in table three or table four:
watch III
Watch four
Wherein n issDenoted is the slot index (slot index) in one radio frame (radio frame).
As an optional implementation manner, sending unit 202 sends the power parameter and the parameter δ of the first UE to the first UE through a higher layer signaling or a Downlink Control Indication (DCI) in a Physical Downlink Control Channel (PDCCH)2,ue1。
As an optional implementation, the processing unit 201 determines the ρ according to the sumA,ue1And ρB,ue1And according to said rhoA,ue1And ρB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
As an optional implementation manner, the processing unit 201 specifically determines the ρ according to the following formulaA,ue1：
The processing unit 201 is specifically configured to determine the ρA,ue1And table five, determining the rhoB,ue1：
Watch five
As aIn an optional embodiment, the sending unit 202 is further configured to indicate δ in a downlink power offset field (downlink power offset field) in DCI of PDCCH of the first UEpower-offset. The downlink power offset field may occupy one bit. The first UE knows delta through the downlink power offset domainpower-offset. For example, the downlink power offset domain may be as the following table six:
watch six
Downlink power offset field δ<sub>power-offset</sub>[dB]
0 -10log<sub>10</sub>(2)
1 0
In an optional embodiment, the processing unit 201 is further configured to determine a power parameter of the first UE according to the parameter δ and the parameter of the first UE2,ue1Determining the second transmission power; the sending unit 202 is further configured to send downlink data of the second UE by using the second transmit power.
An alternative embodiment is given if said parameter δ2,ue1The processing unit 201 is configured to determine a ratio of the first transmit power and the second transmit power according to the first transmit power and the parameter δ2,ue1Determining the second transmit power. The first transmission power may be determined as described above.
An alternative embodiment is given if said parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2A ratio. The rhoue1Including pA,ue1And ρB,ue1The said rhoue2Including pA,ue2And ρB,ue2. The processing unit 201 is configured to respectively determine the rhoA,ue1、ρB,ue1And said parameter delta2,ue1Determining the pA,ue2And ρB,ue2And according to said rhoA,ue2And ρB,ue2Determining the second transmit power. Wherein the rhoA,ue1And ρB,ue1See the previous description for the manner of determination of (1). The processing unit 201 is further configured to determine the ρA,ue1、ρB,ue1And a reference signal transmit power of the second UE, the second transmit power being determined.
In the first embodiment of the present invention, the processing unit 201 of the base station obtains the power parameter and the parameter δ of the first user equipment UE2,ue1And the power parameter and parameter delta of the first user equipment UE are transmitted by the transmitting unit 2022,ue1Sending the power parameter to the first UE, so that the first UE can obtain the first transmission power according to the power parameter of the first UE, and according to the parameter delta2,ue1And the first transmit power determines a second transmit power. The first UE can eliminate the interference of the downlink data of the second UE according to the second transmitting power, and the NOMA technology is adopted for communication.
In the second embodiment of the present invention, a base station is further disclosed, and the difference between the first embodiment and the second embodiment is that the processing unit 201 is further configured to obtain an adjustment parameter δ of the first transmit power1,ue1. The sending unit 202 is further configured to adjust the first transmit power by a parameter δ1,ue1And sending the information to the first UE. The processing unit 201 is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
In an optional implementation manner, the sending unit 202 sends the adjustment parameter δ of the first transmit power to the first UE specifically through a high layer signaling or a downlink control indication DCI in a physical downlink control channel PDCCH1,ue1。
In an alternative embodiment, the adjustment parameter of the first transmission powerδ1,ue1Is an adjusted value of the first transmit power. The processing unit 201 determines a third transmit power according to the power parameter of the first UE, where the first transmit power is an adjustment value obtained by subtracting or adding the first transmit power from the third transmit power.
As an optional implementation manner, the process of determining the obtained third transmission power according to the power parameter of the first UE, by the processing unit 201, may be the same as the process of determining the first transmission power by the processing unit 201 in embodiment one. The processing unit 201 determines p from the sumA,ue1And ρB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the third transmit power being determined.
As an optional implementation manner, when determining the third transmission power, the processing unit 201 is specifically configured to determine the ρ according to the following formulaA,ue1：
The processing unit 201 is specifically configured to determine the ρA,ue1And table five, determining the rhoB,ue1。
In an alternative embodiment, the processing unit 201 adjusts the parameter δ according to the sum of the first transmission power and the second transmission power1,ue1Determining ρA,ue1And ρB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In an optional implementation manner, the processing unit 201 is specifically configured to obtain the ρ according to the following formulaA,ue1：
The processing unit 201 is specifically configured to determine the ρA,ue1And table five determines the pB,ue1。
In the second embodiment of the present invention, the processing unit 201 in the base station obtains the adjustment parameter δ of the first transmit power1,ue1And the adjustment parameter delta of the first transmission power is transmitted by the transmitting unit 2021,ue1And sending the information to the first UE. Adjusting parameter delta of base station through first transmitting power1,ue1And scheduling the first transmission power, thereby realizing the dynamic scheduling of the transmission power under the NOMA technology.
Based on the network architecture shown in fig. 1, a third embodiment of the present invention further discloses a first user equipment UE. The first UE communicates with a base station, the base station serving at least two UEs, the at least two UEs including the first UE and a second UE. Fig. 3 is a schematic structural diagram of a first UE according to a third embodiment of the present invention. As shown in fig. 3, the first UE may include: a receiving unit 301 and a processing unit 302. The receiving unit may specifically be a receiver, and the processing unit may be a processor.
The receiving unit 301 is configured to receive a power parameter and a parameter δ of the first UE sent by a base station2,ue1。
The processing unit 302 is configured to determine a first transmit power according to a power parameter of the first UE.
The processing unit 302 is further configured to determine a power parameter and the parameter δ of the first UE2,ue1A second transmit power is determined.
The receiving unit 301 is further configured to receive a signal sent by the base station, where the received signal includes downlink data of the first UE.
The processing unit 302 is further configured to obtain downlink data of the first UE from the signal received by the receiving unit according to the first transmit power and the second transmit power.
In the embodiment of the present invention, the specific meaning of the related parameter can be referred to the description of the first embodiment.
In an optional implementation manner, the receiving unit 301 is specifically configured to receive the power parameter and the parameter δ of the first UE sent by the base station through a higher layer signaling or a downlink control indication DCI in a physical downlink control channel PDCCH2,ue1。
In an alternative embodiment, the UE determines the first transmit power by a method similar to that of the base station in the first embodiment. The processing unit 302 determines p from the sumA,ue1And ρB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined. The meanings of the relevant parameters can be specifically referred to the description in the first embodiment.
In an optional implementation manner, the processing unit 302 is specifically configured to obtain the ρ according to the following formulaA,ue1：
The processing unit 302 is specifically configured to determine the pA,ue1And table five determines the pB,ue1。
An alternative embodiment is given if said parameter δ2,ue1The processing unit 302 is configured to determine a ratio of the first transmit power and the second transmit power according to the first transmit power and the parameter δ2,ue1Determining the second transmit power. The determination manner of the first transmit power may be as described above.
An alternative embodiment is given if said parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2A ratio. The rhoue1Including pA,ue1And ρB,ue1The said rhoue2Including pA,ue2And ρB,ue2. The processing unit 302 is configured to respectively determine the rhoA,ue1、ρB,ue1And said parameter delta2,ue1Determining the pA,ue2And ρB,ue2And according to said rhoA,ue2And ρB,ue2Determining the second transmit power. Wherein the rhoA,ue1And ρB,ue1See the previous description for the manner of determination of (1).
In an optional implementation manner, when the first UE acquires the downlink data of the first UE, the first UE needs to use an advanced receiver, such as a Maximum Likelihood (ML) receiver or a codeword interference cancellation (CWIC) receiver.
When the first UE uses the maximum likelihood receiver, the possible candidate downlink signals of the first UE and the second UE may be matched with the received signal to determine soft information of a bit corresponding to the downlink signal of the first UE. The downlink signal of the first UE carries downlink data of the first UE.
When the first UE uses the CWIC receiver, the downlink signal of the second UE is firstly demodulated, and then the downlink signal of the second UE is subtracted from the received signal to obtain the downlink signal of the first UE.
The second UE may use the downlink signal of the first UE as interference and directly use the existing conventional receiver.
For example, assume that the channel coefficient corresponding to the first UE is H1Disturbed by noise as σ1. The channel coefficient corresponding to the second UE is H2Disturbed by noise as σ2. Downlink signal X of first UE sent by base station1Has a first transmission power of P1The base station sends the downlink signal X of the second UE on the same time-frequency resource2With a second transmission power of P2. Then the received signals of the first UE and the second UE are Y respectively at this time1And Y2Respectively expressed as:
for the first UE, the received signal Y1Separately obtaining channel H by channel estimation and noise estimation1And interference sigma1According to power P1And P2(ii) a Then, the downlink signal X of the second UE is solved preferentially2According to the above formula, the first UE can solve the downlink signal X of the first UE1。
It should be noted that, the downlink signal X of the first UE is solved above1In the process, the first UE can preferentially solve X2Then subtract X2To obtain a pair X1Because the signal-to-noise ratio of the first UE is higher than that of the second UE, the first UE can correctly solve the downlink signal X of the second UE2. Therefore, for the second UE, the downlink signal X of the second UE cannot be solved correctly1Therefore, X can only be solved directly according to the following formula2：
In the third embodiment of the present invention, the receiving unit 301 of the first UE receives the power parameter and the parameter δ of the first UE sent by the base station2,ue1The processing unit 302 of the first UE obtains the first transmit power according to the power parameter of the first UE and obtains the first transmit power according to the parameter δ2,ue1And the first transmit power determines a second transmit power. The first UE can eliminate the interference of the signal of the second UE according to the second transmitting power, and the NOMA technology is adopted for communication.
The fourth embodiment of the present invention further discloses a first UE, and the difference between the third embodiment and the fourth embodiment is that the receiving device 301 of the first UE is further configured to receive an adjustment parameter δ of a first transmission power sent by a base station1,ue1. The processing unit 302 is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
In an optional implementation manner, the receiving device 301 is specifically configured to receive an adjustment parameter δ of the first transmission power transmitted by a base station through higher layer signaling or DCI in a PDCCH1,ue1。
In an alternative embodiment, the adjustment parameter δ of the first transmit power is1,ue1Is an adjusted value of the first transmit power. The processing unit 302 is specifically configured to determine a third transmit power according to the power parameter of the first UE, where the first transmit power is an adjustment value obtained by subtracting or adding the first transmit power from or to the third transmit power.
As an optional implementation manner, the processing unit 302 is specifically configured to determine the ρ according to the sumA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the third transmit power being determined.
As an optional implementation manner, when determining the third transmission power, the processing unit 302 is specifically configured to determine the ρ according to the following formulaA,ue1：
The processing unit 302, in particular for a rootAccording to the rhoA,ue1And table five, determining the rhoB,ue1。
In an alternative embodiment, the processing unit 302 is specifically configured to adjust the parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In an optional implementation manner, the processing unit 302 is specifically configured to determine the ρ according to the following formulaA,ue1：
The processing unit 302 according to the pA,ue1And table five determines the pB,ue1。
In the fourth embodiment of the present invention, the receiving unit 301 of the first UE receives the adjustment parameter δ of the first transmission power sent by the base station1,ue1. Adjusting parameter delta of base station through first transmitting power1,ue1And scheduling the transmission power so as to realize the dynamic scheduling of the transmission power under the NOMA technology.
Based on the network architecture shown in fig. 1, a fifth embodiment of the present invention discloses a communication method. Referring to fig. 4, fig. 4 is a schematic flow chart of a communication method according to a fifth embodiment of the present invention. The method shown in fig. 4 is applicable to a communication network including at least two UEs, including a first UE and a second UE. As shown in fig. 4, the communication method may include the steps of:
401. the base station acquires a power parameter and a parameter delta of first UE2,ue1；
402. The base station sends the power parameter and the parameter delta of the first UE to the first UE2,ue1；
403. The base station determines the first transmission power according to the power parameter of the first UE;
404. and the base station transmits the downlink signal of the first UE by using the first transmission power.
The power parameter of the first UE comprises: UE-specific parameters of the first UEA cell-specific parameter of the first UE and a reference signal transmit power of the first UE. The parameter delta2,ue1A parameter related to a ratio of the first transmit power to a second transmit power, where the first transmit power is a transmit power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE. For the description of the relevant parameters in the embodiment of the present invention, reference may be made to the relevant description in the first embodiment.
As an optional implementation manner, in step 402, the base station sends the power parameter and the parameter δ of the first UE to the first UE through higher layer signaling or DCI in PDCCH2,ue1。
As an optional implementation manner, in step 403, the base station determines the ρ according to the sumA,ue1And the rhoB,ue1(ii) a The base station according to the rhoA,ue1And the rhoB,ue1And the first reference signal transmit power, determining the first transmit power.
As an optional implementation manner, the base station determines the ρ according to the sumA,ue1And the rhoB,ue1The method comprises the following steps:
the base station determines the rho specifically according to the following formulaA,ue1：
The base station is specifically based on the pA,ue1And table five, determining the rhoB,ue1。
As an optional implementation, the base station indicates δ in a downlink power offset field (downlink power offset field) in DCI of PDCCH of the first UEpower-offset. The downlink power offset field may occupy one bit. The first UE knows delta through the downlink power offset domainpower-offset. The downlink power offset domain may be as shown in table six.
In an optional embodiment, the method further includes that the base station determines the power parameter of the first UE and the parameter δ2,ue1Determining the second transmission power; and the base station sends the downlink data of the second UE by using the second transmitting power.
An alternative embodiment is given if said parameter δ2,ue1The base station is the ratio of the first transmission power and the second transmission power according to the first transmission power and the parameter delta2,ue1Determining the second transmit power. The first transmission power may be determined as described above.
An alternative embodiment is given if said parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2A ratio. The rhoue1Including pA,ue1And ρB,ue1The said rhoue2Including pA,ue2And ρB,ue2. The base stations respectively according to the rhoA,ue1、ρB,ue1And said parameter delta2,ue1Determining the pA,ue2And ρB,ue2And according to said rhoA,ue2And ρB,ue2Determining the second transmit power. Wherein the rhoA,ue1And ρB,ue1See the previous description for the manner of determination of (1). The base station further depends on the pA,ue1、ρB,ue1And a reference signal transmit power of the second UE, the second transmit power being determined.
In the fifth embodiment of the present invention, the base station obtains the power parameter and the parameter δ of the first UE2,ue1And the power parameter and the parameter delta of the first UE are calculated2,ue1Sending the power parameter to the first UE, so that the first UE can obtain the first transmission power according to the power parameter of the first UE and obtain the first transmission power according to the parameter delta2,ue1And the first transmit power determines a second transmit power. The first UE can eliminate the interference of the downlink data of the second UE according to the second transmitting power, and the NOMA technology is adopted for communication.
A sixth embodiment of the present invention further discloses a communication method, and the difference between the sixth embodiment and the fifth embodiment is that the base station further obtains an adjustment parameter δ of the first transmit power1,ue1And adjusting the first transmission power by a parameter delta1,ue1And sending the information to the first UE. In step 403, the base station specifically adjusts the parameter δ according to the power parameter of the first UE and the adjustment parameter δ of the first transmit power1,ue1Determining the first transmit power. The meaning of the relevant parameters can be seen in example five.
In an optional embodiment, the base station sends the adjustment parameter δ of the first transmit power to the first UE through higher layer signaling or DCI in PDCCH1,ue1。
In an alternative embodiment, the adjustment parameter δ of the first transmit power is1,ue1Is an adjusted value of the first transmit power. And the base station determines the obtained third transmitting power according to the power parameter of the first UE, wherein the first transmitting power is the adjustment value of the first transmitting power subtracted from or added to the third transmitting power.
In an optional implementation manner, a process of determining, by the base station, the obtained third transmit power according to the power parameter of the first UE may be the same as the process of determining, by the base station, the first transmit power in the fifth embodiment. The base station determines p from the sumA,ue1And ρB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the third transmit power being determined.
As an optional implementation manner, when the base station determines the third transmission power, the base station determines the ρ according to the sumA,ue1And the rhoB,ue1The method comprises the following steps:
the base station determines the rho according to the following formulaA,ue1：
The base station according to the rhoA,ue1And table five, determining the rhoB,ue1。
In an alternative embodiment, the base station adjusts the parameter δ according to the sum of the first transmission power and the second transmission power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In an alternative embodiment, the base station adjusts the parameter δ according to the sum of the first transmission power and the second transmission power1,ue1Determining the pA,ue1And the rhoB,ue1The method comprises the following steps:
the base station stated rho according to the following formulaA,ue1：
The base station according to the rhoA,ue1And table five determines the pB,ue1。
In the sixth embodiment of the present invention, the base station obtains the adjustment parameter δ of the first transmission power1,ue1And adjusting the first transmission power by a parameter delta1,ue1And sending the information to the first UE. Adjusting parameter delta of base station through first transmitting power1,ue1And scheduling the transmission power so as to realize the dynamic scheduling of the transmission power under the NOMA technology.
Based on the network architecture shown in fig. 1, a seventh embodiment of the present invention further discloses a communication method. Referring to fig. 5, fig. 5 is a flowchart illustrating a communication method according to a seventh embodiment of the present invention. The method is applicable to a communication network comprising at least two User Equipments (UEs), wherein the at least two UEs comprise a first UE and a second UE. As shown in fig. 5, the communication method may include the steps of:
501. a first User Equipment (UE) receives a power parameter and a parameter delta of the first UE sent by a base station2,ue1。
502. The first UE determines the first transmission power according to the power parameter of the first UE;
503. the first UE according to the first transmission power and the parameter delta2,ue1Determining the second transmit power;
504. the first UE receives a signal sent by the base station, wherein the received signal comprises downlink data of the first UE;
505. and the first UE acquires the downlink data of the first UE from the received signal according to the first transmitting power and the second transmitting power.
The UE-specific parameter of the first UE is a cell-specific parameter of the first UE and a reference signal transmit power of the first UE. The parameter delta2,ue1A parameter related to a ratio of the first transmit power and a second transmit power, the second transmit powerA transmission power is the transmission power of the downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE. For the description of the relevant parameters in the embodiment of the present invention, reference may be made to the relevant description in the first embodiment.
In an optional implementation manner, in step 501, the first UE receives a power parameter and the parameter δ of the first UE sent by the base station through a higher layer signaling or a downlink control indication DCI in a physical downlink control channel PDCCH2,ue1。
In an alternative implementation manner, in step 502, the first UE determines the first transmit power by using a method similar to that of the base station in the fifth embodiment. The first UE determines ρ from the sumA,ue1And ρB,ue1(ii) a The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined. Specifically, refer to the description in embodiment one.
In an optional embodiment, the first UE determines the ρ according to the sumA,ue1And the rhoB,ue1The method comprises the following steps:
the first UE determines the ρ according to the following formulaA,ue1：
The first UE is specifically in accordance with the ρA,ue1And table five determines the pB,ue1。
As an optional implementation manner, the first UE receives a PDCCH sent by the base station and acquires δ from a downlink power offset field (downlink power offset field) in DCI in the PDCCH, where the PDCCH is transmitted by the base stationpower-offset. For example, the downlink power offset domain may be as shown in table six. The downlink power offset field is one bit.
In an optional implementation manner, in step 503, the first UE determines the power parameter and the parameter δ of the first UE2,ue1Determining the second transmit power comprises:
if said parameter δ2,ue1The first UE is the ratio of the first transmission power and the second transmission power according to the first transmission powerThe ratio and the parameter delta2,ue1Determining the second transmit power. The determination manner of the first transmit power may be as described above. Alternatively, the first and second electrodes may be,
if said parameter δ2,ue1Is rho of the first UEue1And p of the second UEue2A ratio. The rhoue1Including pA,ue1And ρB,ue1The said rhoue2Including pA,ue2And ρB,ue2. The first UE is respectively according to the rhoA,ue1、ρB,ue1And said parameter delta2,ue1Determining the pA,ue2And ρB,ue2And according to said rhoA,ue2And ρB,ue2Determining the second transmit power. Wherein the rhoA,ue1And ρB,ue1See the previous description for the manner of determination of (1).
In an alternative embodiment, in step 504, when the first UE receives the signal transmitted by the base station, the first UE needs to use an advanced receiver, such as a Maximum Likelihood (ML) receiver or a codeword interference cancellation (CWIC) receiver.
When the first UE uses the maximum likelihood receiver, the possible candidate downlink signals of the first UE and the second UE may be matched with the received signal to determine soft information of a bit corresponding to the downlink signal of the first UE. The downlink signal of the first UE carries downlink data of the first UE.
When the first UE uses the CWIC receiver, the downlink signal of the second UE is firstly demodulated, and then the downlink signal of the second UE is subtracted from the received signal to obtain the downlink signal of the first UE.
The second UE may use the downlink signal of the first UE as interference and directly use the existing conventional receiver.
In an optional implementation manner, in step 505, the first UE acquires downlink data of the first UE from the received signal according to the first transmit power and the second transmit power.
For example, assume that the channel coefficient corresponding to the first UE is H1Disturbed by noise as σ1. The channel coefficient corresponding to the second UE is H2Disturbed by noise as σ2. Downlink signal X of first UE sent by base station1Has a first transmission power of P1The base station sends the downlink signal X of the second UE on the same time-frequency resource2With a second transmission power of P2. Then the received signals of the first UE and the second UE are Y respectively at this time1And Y2Respectively expressed as:
for the first UE, the received signal Y1Separately obtaining channel H by channel estimation and noise estimation1And interference sigma1According to power P1And P2(ii) a Then, the downlink signal X of the second UE is solved preferentially2According to the above formula, the first UE can solve the downlink signal X of the first UE1。
It should be noted that, the downlink signal X of the first UE is solved above1In the process, the first UE can preferentially solve X2Then subtract X2To obtain a pair X1Because the signal-to-noise ratio of the first UE is higher than that of the second UE, the first UE can correctly solve the downlink signal X of the second UE2. Therefore, for the second UE, the downlink signal X of the second UE cannot be solved correctly1Therefore, X can only be solved directly according to the following formula2：
In the seventh embodiment of the present invention, the first UE receives the power parameter and the parameter δ of the first UE sent by the base station2,ue1The first UE obtains a first transmission power according to the power parameter of the first UE and obtains a first transmission power according to the parameter delta2,ue1And the first transmit power determines a second transmit power. The first UE can eliminate the interference of the signal of the second UE according to the second transmitting power, and the NOMA technology is adopted for communication.
The inventionEighth embodiment discloses a communication method, and the difference between the eighth embodiment and the seventh embodiment is that the first UE receives the adjustment parameter δ of the first transmission power transmitted by the base station1,ue1. The first UE specifically adjusts the parameter delta according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power.
In an optional embodiment, the first UE receives an adjustment parameter δ of the first transmit power sent by the base station through higher layer signaling or DCI in PDCCH1,ue1。
In an alternative embodiment, the adjustment parameter δ of the first transmit power is1,ue1Is an adjusted value of the first transmit power. The first UE adjusts the parameter delta according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power comprises: and the first UE determines the obtained third transmitting power according to the power parameter of the first UE, wherein the first transmitting power is the adjustment value of the first transmitting power subtracted by or added with the third transmitting power.
In an optional embodiment, the first UE determines the ρ according to the sumA,ue1And the rhoB,ue1(ii) a The first UE according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the third transmit power being determined.
As an optional implementation manner, when determining the third transmit power, the first UE determines the ρ according to the following formulaA,ue1：
The first UE specifically depends on the ρA,ue1And table five, determining the rhoB,ue1。
Here, the third power may be determined in a manner that the first transmission power is determined in the fifteenth embodiment.
In an optional embodiment, the first UE adjusts the parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a The first UE according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
In an optional embodiment, the first UE specifically adjusts the parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1The method comprises the following steps:
the first UE determines the ρ according to the following formulaA,ue1：
The first UE specifically depends on the ρA,ue1And table five determines the pB,ue1。
As an optional implementation manner, the first UE receives δ indicated by the base station through a downlink power offset field (downlink power offset field) in DCI of the PDCCH of the first UEpower-offset. For example, the downlink power offset domain may be as shown in table six below.
In the seventh embodiment of the present invention, the first UE receives the adjustment parameter δ of the first transmission power sent by the base station1,ue1. Adjusting parameter delta of base station through first transmitting power1,ue1And scheduling the transmission power so as to realize the dynamic scheduling of the transmission power under the NOMA technology.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (27)

  1. A base station serving at least two user equipments, UEs, including a first UE and a second UE, comprising:
    a processing unit for determining a power parameter and a parameter δ of the first UE2,ue1(ii) a Wherein, the firstThe power parameters of a UE include: UE-specific parameters of the first UE cell-specific parameters of the first UE and reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE;
    a sending unit, configured to send the power parameter and the parameter δ of the first UE to the first UE2,ue1；
    The processing unit is further configured to determine the first transmit power according to a power parameter of the first UE;
    the sending unit is further configured to send downlink data of the first UE using the first transmit power.
  2. Base station according to claim 1, characterized in that said parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or
    The parameter delta2,ue1Is rho of the first UEue1And p of the second UEue2Ratio, where the ρue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
  3. The base station according to claim 1 or 2,
    the processing unit is further configured to obtain the firstAdjustment parameter delta of transmitting power1,ue1；
    The sending unit is further configured to send an adjustment parameter δ of the first transmit power to the first UE1,ue1；
    The processing unit is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
  4. Base station according to claim 3, characterized in that the adjustment parameter δ of the first transmission power is1,ue1Is an adjusted value of the first transmit power.
  5. Base station according to claim 3, wherein said processing unit is specifically configured to adjust a parameter δ according to said sum of said first transmit powers1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  6. Base station according to claim 5, characterized in that the processing unit is specifically configured to determine the p according to the following formulaA,ue1：
    The processing unit is specifically configured to determine the ρA,ue1And the following table, determining the rhoB,ue1：
  7. Base station according to claim 2, characterized in that said processing unit is specifically adapted to determine said p from said sumA,ue1And the rhoB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  8. Base station according to claim 7, wherein the processing unit is specifically configured to determine according to the following formulaThe rhoA,ue1：
    The processing unit is specifically configured to determine the ρA,ue1And the following table, determining the rhoB,ue1：
  9. The base station according to any of claims 1-8, wherein said processing unit is further configured to determine a power parameter of said first UE and said parameter δ2,ue1Determining the second transmission power;
    the sending unit is further configured to send downlink data of the second UE using the second transmit power.
  10. A communication method applicable to a communication network including at least two UEs including a first UE and a second UE, the method comprising:
    the base station acquires the power parameter and the parameter delta of the first UE2,ue1(ii) a Wherein the power parameter of the first UE comprises: UE-specific parameters of the first UE cell-specific parameters of the first UE and reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE;
    the base station sends the power parameter and the parameter delta of the first UE to the first UE2,ue1；
    The base station determines the first transmission power according to the power parameter of the first UE;
    and the base station transmits the downlink signal of the first UE by using the first transmission power.
  11. The method of claim 10, wherein the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or
    The parameter delta2,ue1Is rho of the first UEue1And p of the second UEue2Ratio of where said pue1A ratio, the ρ, of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UEue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
  12. The method of claim 10 or 11, further comprising:
    the base station obtains an adjustment parameter delta of the first transmission power1,ue1；
    The base station sends an adjustment parameter delta of the first transmission power to the first UE1,ue1；
    The base station determining a first transmit power according to the power parameter of the first UE includes: the base station adjusts the parameter delta according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power.
  13. Method according to claim 12, characterized in that the adjustment parameter δ of the first transmission power is1,ue1Is an adjusted value of the first transmit power.
  14. The method of claim 13, wherein the base station adjusts the parameter δ according to the power parameter of the first UE and the first transmission power1,ue1Determining the first transmit power comprises: the base station adjusts a parameter delta according to the sum of the first transmission power and the second transmission power1,ue1Determining the pA,ue1And the rhoB,ue1；
    The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  15. The method according to claim 14, wherein said base station adjusts parameter δ according to said sum of said first transmission power1,ue1Determining the pA,ue1And the rhoB,ue1The method comprises the following steps:
    the base station determines the rho according to the following formulaA,ue1：
    The base station according to the rhoA,ue1And the following table, determining the rhoB,ue1：
  16. The method of claim 11, wherein the base station determining the first transmit power according to a power parameter of the first UE comprises:
    the base station determines the p according to the sumA,ue1And the rhoB,ue1；
    The base station according to the rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  17. The method of claim 16, wherein the base station determines the p according to the sumA,ue1And the rhoB,ue1The method comprises the following steps:
    the base station determines the rho according to the following formulaA,ue1：
    The base station according to the rhoA,ue1And determining said rho from the tableB,ue1：
  18. The method of any one of claims 10-17, further comprising the base station determining the power parameter and the parameter δ of the first UE2,ue1Determining the second transmission power;
    and the base station sends the downlink data of the second UE by using the second transmitting power.
  19. A first user equipment, UE, in communication with a base station, the base station serving at least two UEs, the at least two UEs including the first UE and a second UE, comprising:
    a receiving unit, configured to receive the power parameter and the parameter δ of the first UE sent by the base station2,ue1(ii) a Wherein the power parameter of the first UE comprises: a cell-specific parameter of the first UE and a reference signal transmit power of the first UE, the parameter δ2,ue1A parameter related to a ratio of a first transmission power and a second transmission power, where the first transmission power is a transmission power of downlink data of the first UE; the second transmission power is the transmission power of downlink data of the second UE;
    a processing unit, configured to determine the first transmit power according to a power parameter of the first UE;
    the processing unit is further configured to determine a power parameter of the first UE and the parameter δ2,ue1Determining the second transmit power;
    the receiving unit is further configured to receive a signal sent by the base station, where the received signal includes downlink data of the first UE;
    the processing unit is further configured to obtain downlink data of the first UE from the signal received by the receiving unit according to the first transmit power and the second transmit power.
  20. The first UE of claim 19, wherein the parameter δ2,ue1Is the ratio of the first transmit power and the second transmit power; or
    The parameter delta2,ue1Is rho of the first UEue1And p of the second UEue2Ratio, where the ρue1Representing a ratio of an Energy Per Resource Element (EPRE) of a Physical Downlink Shared Channel (PDSCH) of the first UE to an EPRE of a cell-specific reference signal of the first UE,the rhoue1Including pA,ue1And ρB,ue1The said rhoA,ue1And ρB,ue1Different orthogonal frequency division multiplexing, OFDM, symbol indices corresponding to the first UE; the rhoue2Representing a ratio of an EPRE of the PDSCH of the second UE to an EPRE of a cell-specific reference signal of the second UE, the ρue2Including pA,ue2And ρB,ue2The said rhoA,ue2And ρB,ue2Different OFDM symbol indices corresponding to the second UE.
  21. The first UE of claim 19 or 20,
    the receiving unit is further configured to receive an adjustment parameter δ of the first transmit power sent by the base station1,ue1；
    The processing unit is specifically configured to adjust a parameter δ according to a power parameter of the first UE and the first transmit power1,ue1Determining the first transmit power.
  22. The first UE of claim 21, wherein the adjustment parameter δ of the first transmit power is1,ue1Is an adjusted value of the first transmit power.
  23. The first UE of claim 21, wherein the processing unit is specifically configured to adjust a parameter δ according to the sum of the first transmit power and the second transmit power1,ue1Determining the pA,ue1And the rhoB,ue1(ii) a And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  24. The first UE of claim 23, wherein the processing unit is specifically configured to determine the p according to the following formulaA,ue1：
    The processing unit is specifically configured to determine the ρA,ue1And the following table, determining the rhoB,ue1：
  25. The first UE of claim 20, wherein the processing unit is specifically configured to determine the p from the sumA,ue1And the rhoB,ue1And according to said rhoA,ue1And the rhoB,ue1And a reference signal transmit power of the first UE, the first transmit power being determined.
  26. The first UE of claim 25, wherein the processing unit is specifically configured to determine the p according to the following formulaA,ue1：
    The processing unit is specifically configured to determine the ρA,ue1And the following table, determining the rhoB,ue1：
  27. A communication system comprising a base station and at least two user equipments, UEs, the base station serving the at least two UEs, the at least two UEs comprising a first UE and a second UE, wherein the base station is according to any of claims 1-9, and the first UE is according to any of claims 19-26.
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