CN108512627B

CN108512627B - Scheduling method, device and system based on multi-user superposition transmission

Info

Publication number: CN108512627B
Application number: CN201710104567.7A
Authority: CN
Inventors: 佘锋; 梁亚超
Original assignee: Sanechips Technology Co Ltd
Current assignee: Xi'an Chris Semiconductor Technology Co.,Ltd.
Priority date: 2017-02-24
Filing date: 2017-02-24
Publication date: 2020-07-24
Anticipated expiration: 2037-02-24
Also published as: WO2018153044A1; CN108512627A

Abstract

The invention discloses a scheduling method based on multi-user superposition transmission, which comprises the following steps: sending an activation instruction to a first User Equipment (UE), wherein the first UE is a UE in a UE set used for multi-user superposition transmission (MUST), and the activation instruction is used for activating a scheduling mechanism of the MUST of the first UE; generating scheduling information for MUST, and generating a scheduling instruction according to the scheduling information in a preset period in the activation instruction; the scheduling information comprises modulation information of a second UE and a target transmission power ratio of the first UE and the second UE, wherein the second UE is a UE different from the first UE in the UE set; and sending the scheduling instruction to the first UE for the first UE to analyze MUST information. The invention also discloses a scheduling device and a system based on multi-user superposition transmission.

Description

Scheduling method, device and system based on multi-user superposition transmission

Technical Field

The present invention relates to the field of wireless access technologies, and in particular, to a scheduling method, apparatus, and system based on multi-user superposition transmission.

Background

In the long Term Evolution (L ong Term Evolution Advanced, L TE-a) system and the fifth Generation mobile communication system, the non-orthogonal Multiple access becomes an important access scheme for the design of a radio interface, and in the 14 th edition of the standard specification made by the 3rd Generation Partnership Project (3 GPP), the non-orthogonal Multiple access technology is determined to be an important novel access mode and written into the standard.

The MUST refers to that multiple data streams of multiple users are transmitted on the same time/frequency/space resource, and the data of different users are recovered by interference cancellation or iterative decoding at the receiving end. The current MUST transmission method comprises the following steps: at the base station side, data of two UEs, which are respectively a near-end User Equipment (UE) and a far-end UE, are superimposed on the same time-frequency resource for transmission, as shown in fig. 1, in a process of MUST scheduling of the near-end UE and the far-end UE, the base station provides the near-end UE with related transmission information of the far-end UE, such as modulation information, power allocation ratio information, and the like, which are used to help the near-end UE to identify interference of the far-end UE, so as to correctly receive its own data; for the far-end UE, the base station generally does not need to configure information of the near-end UE, that is, the near-end UE is transparent to the far-end UE, and the far-end UE can demodulate its own data through the effect of large-scale fading.

However, in the above-mentioned method for transmitting the MUST, the near-end UE needs to add extra Downlink Control Information (DCI) signaling in each Physical Downlink Control Channel (PDCCH) Information subframe, thereby increasing signaling overhead and computational difficulty of the near-end UE.

Disclosure of Invention

In view of this, embodiments of the present invention are expected to provide a scheduling method, apparatus, and system based on multi-user superposition transmission, so as to reduce signaling overhead and computational difficulty of near-end UE.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides a scheduling method based on multi-user superposition transmission, which comprises the following steps:

sending an activation instruction to a first UE, wherein the first UE is a UE in a UE set for MUST, and the activation instruction is used for activating a scheduling mechanism of MUST of the first UE;

generating scheduling information for MUST, and generating a scheduling instruction according to the scheduling information in a preset period in the activation instruction; the scheduling information comprises modulation information of a second UE and a target transmission power ratio of the first UE and the second UE, wherein the second UE is a UE different from the first UE in the UE set;

and sending the scheduling instruction to the first UE for the first UE to analyze MUST information.

In the foregoing solution, the sending the scheduling instruction to the first UE includes: and transmitting the scheduling instruction to the first UE through the PDCCH.

In the foregoing solution, before sending the activation instruction to the first UE, the method further includes:

sending configuration information to the second UE, wherein the configuration information is used for configuring the operating parameters of the second UE;

receiving feedback information of the second UE after the configuration information is configured in a first preset time period;

counting the transmission power when N pieces of information are respectively sent to the first UE and the second UE in a second preset time period, and calculating a transmission power ratio, wherein N is a positive integer;

judging whether the second UE is in a stable state or not according to the feedback information and the transmitting power ratio;

and when the second UE is determined to be in a stable state, starting a scheduling mechanism of the MUST, and acquiring the target transmitting power ratio according to the transmitting power ratio.

In the above solution, the configuration information includes first precoding information of the second UE;

judging whether the second UE is in a stable state according to the feedback information and the transmission power ratio comprises:

judging whether the angular variance of the precoding vector in the first precoding information and the ratio variance of the transmitting power ratio are respectively lower than a first preset variance threshold and a second preset variance threshold;

when the angle variance is lower than a first preset variance threshold and the ratio variance is lower than a second preset variance threshold, determining that the second UE is in a stable state;

and when the angle variance is higher than a first preset variance threshold value or the ratio variance is higher than a second preset variance threshold value, determining that the second UE is in an unstable state.

In the above scheme, the method further comprises: and receiving activation confirmation information sent by the first UE, wherein the activation confirmation information is used for prompting a scheduling mechanism of activated MUST and instructing the wireless transceiver to send MUST information to the first UE.

In the above scheme, the method further comprises: receiving second preset coding information and third preset coding information which are respectively sent by the first UE and the second UE in a third preset time period;

respectively judging whether the first UE and the second UE are in a stable state or not according to a second precoding vector in the second preset coding information and a third precoding vector in the third preset coding information;

when at least one of the first UE and the second UE is in an unstable state, sending a deactivation instruction to the first UE, wherein the deactivation instruction is used for terminating a scheduling mechanism of an MUST of the first UE;

alternatively, the first and second electrodes may be,

counting the number of times of receiving HARQ in a fourth preset time period, wherein the HARQ is used for requesting retransmission of the MUST information;

judging whether the receiving times of the HARQ is greater than a preset retransmission threshold value or not;

and when the receiving times of the HARQ are larger than a preset retransmission threshold value, determining that the first UE and/or the second UE are in an unstable state, and sending a deactivation instruction to the first UE.

In the foregoing solution, the determining, according to the second precoding vector in the second preset coding information and the third precoding vector in the third preset coding information, whether the first UE and the second UE are in a stable state respectively includes:

respectively judging whether a second angular variance of a second precoding vector in the second precoding information and a third angular variance of a third precoding vector in the third precoding information are higher than a third preset variance threshold value;

determining that the first UE and/or the second UE is in an unstable state when the second angular variance and/or the third angular variance is higher than a third preset variance threshold;

when the second angle variance and the third angle variance are lower than a third preset variance threshold, determining that the first UE and the second UE are in a stable state.

receiving an activation instruction sent by a wireless transceiver, wherein the activation instruction is used for activating a scheduling mechanism of a MUST of a first UE, and the first UE is a UE in a UE set used for the MUST;

receiving a scheduling instruction sent by a wireless transceiver, and acquiring scheduling information according to the scheduling instruction, so that the first UE can analyze MUST information; the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, and the second UE is a UE different from the first UE in the UE set.

In the above scheme, the method further comprises: searching for a scheduling instruction for the first UE in the PDCCH subframe according to the activation instruction.

In the above scheme, the method further comprises: and after a deactivation instruction sent by a wireless transceiver is received, terminating the search for the scheduling instruction aiming at the first UE in the PDCCH subframe.

In the above solution, after receiving the activation command sent by the wireless transceiver, the method further includes:

sending activation confirmation information to the wireless transceiver, the activation confirmation information being used to prompt a scheduling mechanism of an activated MUST and instruct the wireless transceiver to send MUST information to the first UE;

when the MUST information is received, analyzing the MUST information according to the modulation information and a target transmission power ratio to obtain user data aiming at the first UE.

In the foregoing solution, before analyzing the MUST information according to the modulation information and the target transmit power ratio, the method further includes:

detecting whether error codes occur in user data belonging to the first UE in the MUST information;

and if the user data has error codes, transmitting HARQ to the wireless receiver, wherein the HARQ is used for requesting retransmission of the MUST information.

An embodiment of the present invention further provides a wireless transceiver, where the wireless transceiver includes:

a sending module, configured to send an activation instruction to a first UE, where the first UE is a UE in a UE set for MUST, and the activation instruction is used to activate a scheduling mechanism of the MUST of the first UE;

the processing module is used for generating scheduling information for the MUST and generating a scheduling instruction according to the scheduling information according to a preset period in the activation instruction; the scheduling information comprises modulation information of a second UE and a target transmission power ratio of the first UE and the second UE, wherein the second UE is a UE different from the first UE in the UE set;

the sending module is further configured to send the scheduling instruction to the first UE, so that the first UE can analyze the MUST information.

In the foregoing solution, the sending module is specifically configured to send the scheduling instruction to the first UE through a PDCCH.

In the foregoing solution, the sending module is further configured to send configuration information to the second UE before sending an activation instruction to the first UE, where the configuration information is used to configure an operation parameter of the second UE;

the wireless transceiver further comprises:

a receiving module, configured to receive, within a first preset time period, feedback information of the second UE after the configuration information is configured;

the sending module is further configured to count, within a second preset time period, transmission powers at which N pieces of information are sent to the first UE and the second UE, respectively, and calculate a transmission power ratio, where N is a positive integer;

a judging module, configured to judge whether the second UE is in a stable state according to the feedback information and the transmission power ratio;

the processing module is further configured to start a scheduling mechanism of the MUST when the determining module determines that the second UE is in the stable state, and obtain the target transmit power ratio according to the transmit power ratio.

In the above solution, the configuration information includes first precoding information of the second UE; the judging module comprises:

a first determining sub-module, configured to determine whether an angle variance of a precoding vector in the first precoding information and a ratio variance of the transmit power ratio are lower than a first preset variance threshold and a second preset variance threshold, respectively;

a first determining sub-module, configured to determine that the second UE is in a stable state when the angle variance is lower than a first preset variance threshold and the ratio variance is lower than a second preset variance threshold;

the first determining submodule is further configured to determine that the second UE is in an unstable state when the angle variance is higher than a first preset variance threshold or the ratio variance is higher than a second preset variance threshold.

In the foregoing solution, the receiving module is further configured to receive activation confirmation information sent by the first UE, where the activation confirmation information is used to prompt a scheduling mechanism of an activated MUST and instruct the wireless transceiver to send MUST information to the first UE.

In the above scheme, the receiving module is further configured to receive second preset coding information and third preset coding information, which are sent by the first UE and the second UE respectively, in a third preset time period;

the determining module is further configured to determine whether the first UE and the second UE are in a stable state according to a second precoding vector in the second preset coding information and a third precoding vector in the third preset coding information;

the sending module is further configured to send a deactivation instruction to the first UE when at least one of the first UE and the second UE is in an unstable state, where the deactivation instruction is used to terminate a scheduling mechanism of a MUST of the first UE;

alternatively, the first and second electrodes may be,

the wireless transceiver further comprises:

a counting module, configured to count the number of times that an HARQ is received within a fourth preset time period, where the HARQ is used to request retransmission of the MUST information;

the judging module is further configured to judge whether the number of times of receiving the HARQ is greater than a preset retransmission threshold;

a determining module, configured to determine that the first UE and/or the second UE are in an unstable state when the number of HARQ receptions is greater than a preset retransmission threshold;

the sending module is further configured to send a deactivation instruction to the first UE when it is determined that the first UE and/or the second UE are in an unstable state.

In the foregoing solution, the determining module includes: a second determining sub-module, configured to respectively determine whether a second angular variance of a second precoding vector in the second precoding information and a third angular variance of a third precoding vector in the third precoding information are higher than a third preset variance threshold;

a second determining sub-module, configured to determine that the first UE and/or the second UE is in an unstable state when the second angular variance and/or the third angular variance is higher than a third preset variance threshold;

the second determining sub-module is further configured to determine that the first UE and the second UE are in a stable state when the second angular variance and the third angular variance are lower than a third preset variance threshold.

The embodiment of the present invention further provides a first UE, where the first UE includes:

a receiving module, configured to receive an activation instruction sent by a wireless transceiver, where the activation instruction is used to activate a scheduling mechanism of a MUST of a first UE, and the first UE is a UE in a UE set used for the MUST;

the receiving module is also used for receiving a scheduling instruction sent by the wireless transceiver;

an obtaining module, configured to obtain scheduling information according to the scheduling instruction, so that the first UE may analyze the MUST information; the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, and the second UE is a UE different from the first UE in the UE set.

In the foregoing solution, the receiving module includes: the first UE includes:

a searching module, configured to search for a scheduling instruction for the first UE in the PDCCH subframe according to the activation instruction.

In the foregoing solution, the first UE further includes: and the termination module is used for terminating the search of the scheduling instruction aiming at the first UE in the PDCCH subframe information after receiving a deactivation instruction sent by a wireless transceiver.

In the foregoing solution, the first user equipment further includes: a sending module, configured to send, after the receiving module receives an activation instruction sent by a wireless transceiver, activation confirmation information to the wireless transceiver, where the activation confirmation information is used to prompt a scheduling mechanism of activated MUST and instruct the wireless transceiver to send MUST information to the first UE;

and the analysis module is used for analyzing the MUST information according to the modulation information and the target transmitting power ratio after receiving the MUST information so as to obtain the user data aiming at the first UE.

In the foregoing solution, the first UE further includes: a detection module, configured to detect whether an error occurs in user data belonging to the first UE in the MUST information before analyzing the MUST information according to the modulation information and a target transmit power ratio;

the sending module is further configured to send HARQ to the wireless receiver when the user data has an error code, where the HARQ is used to request retransmission of the MUST information.

The embodiment of the invention also provides a multi-user superposition transmission system, which comprises: a wireless transceiver, a first UE, and a second UE, wherein,

the wireless transceiver is used for activating/deactivating a MUST mechanism;

the first UE is used for receiving MUST information and analyzing the MUST information;

the second UE is configured to receive configuration information sent by the wireless transceiver, and is further configured to send feedback information and third preset coding information to the wireless transceiver, where the feedback information includes first precoding information.

According to the scheduling method, device and system for multi-user superposition transmission provided by the embodiment of the invention, a wireless transceiver sends an activation instruction to a first UE (user equipment), wherein the first UE is a UE set for MUST, and the activation instruction is used for activating a scheduling mechanism of MUST of the first UE; generating scheduling information for MUST, and generating a scheduling instruction according to the scheduling information in a preset period in the activation instruction; the scheduling information comprises modulation information of a second UE and a target transmission power ratio of the first UE and the second UE, wherein the second UE is a UE different from the first UE in the UE set; and sending the scheduling instruction to the first UE, so that the first UE can analyze the MUST information according to the scheduling instruction. Therefore, the embodiment of the invention realizes the simplification of DCI signaling, thereby shortening the process of searching DCI information by UE, improving the rapidity of UE retrieval and saving control channel resources.

In addition, the near-end UE obtains the modulation information of the second UE and the transmission power ratio of the second UE and the first UE through the base station, and analyzes the MUST information according to the modulation information and the power, thereby accurately obtaining the transmission data aiming at the first UE.

Drawings

Fig. 1 is a schematic network structure diagram of a multi-user superposition transmission system according to an embodiment of the present invention;

fig. 2 is a schematic flowchart illustrating an implementation of a scheduling method based on multi-user superposition transmission according to a second embodiment of the present invention;

FIG. 3-a is a schematic diagram of an implementation flow of a multi-user superposition transmission activation process;

FIG. 3-b is a schematic diagram of an implementation flow of a multiuser superposition transmission deactivation process;

fig. 4 is a schematic structural diagram of a wireless transceiver according to a second embodiment of the present invention;

fig. 5 is a schematic flowchart illustrating an implementation flow of a scheduling method based on multi-user superposition transmission according to a third embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first UE according to a third embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example one

Fig. 1 is a schematic network structure diagram of a multi-user superposition transmission system according to an embodiment of the present invention, and as shown in fig. 1, the multi-user superposition transmission system includes: a wireless transceiver, a first UE and a second UE; wherein the content of the first and second substances,

here, the wireless transceiver is used for communicating with the user equipment, and may be a base Station (BTS) in GSM or CDMA, a base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB) in L TE, a relay Station, an access Network device in a future 5G Network or an access Network device in a future evolved Public land Mobile Network (P L MN), and the like.

The first UE is generally a UE which is closer to a Wireless transceiver and has small link loss when transmitting data, and is also called a near-end UE, the second UE is a UE which is other than the first UE and is also called a far-end UE and is used for realizing a scheduling mechanism of the MUST, the first UE and the second UE comprise UEs which can be in data communication with the base station, and the UEs can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless local loop (Wireless L oc L oop, a W LL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a mobile station in a future 5G network or a terminal device in a future evolution P L MN network, and the like, and the first UE is generally determined according to the distance from the base station, the link loss and the like, and the second UE is generally determined according to the condition that the first UE and the second UE are closer to the Wireless transceiver when the distance from the Wireless transceiver is smaller than the second UE and the distance from the second UE when the Wireless transceiver is smaller than the first UE and the second UE.

Example two

Fig. 2 is a schematic flow chart illustrating an implementation of a scheduling method based on multi-user superposition transmission according to an embodiment of the present invention, as shown in fig. 2, the scheduling method includes:

step 201: the wireless transceiver sends an activation instruction to a first UE, the first UE being a UE in a UE set for MUST, the activation instruction being for activating a scheduling mechanism of the MUST of the first UE.

Here, the scheduling mechanism of the MUST is a MUST quasi-static scheduling mechanism, or a MUST semi-static scheduling mechanism; wherein the activation signaling includes, but is not limited to:

1) an indication of semi-static or non-semi-static scheduling;

2) a period of MUST scheduling, and/or a scheduling resource indication of MUST;

3) relevant configurations of the MUST transmission, including MUST scene indications (case1, case2, case3), candidate transmit power ratio values, and modulation combination parameters;

4) indication of the start time or the reception subframe time of the MUST, i.e. the first UE (near UE) will search for the MUST related DCI signaling in the following several subframes after receiving the MUST scheduling signaling (RRC signaling).

Here, the activation instruction includes: radio Resource Control (RRC) signaling or physical layer Control Element (MAC-CE) signaling.

Assume that the system is in a MUST transmission, which is based on dynamic scheduling, i.e. dynamic signaling is transmitted to the near-end UE in every PDCCH subframe. And the wireless transceiver counts the transmission parameters of the second UE while dynamically scheduling. If the transmission parameters are stable, i.e. the precoding vector or the power allocation ratio is stable, the second UE is considered to be in a stable state. At this point, the wireless transceiver may consider activating the MUST quasi-static scheduling.

Further, before the wireless transceiver sends an activation instruction to the first UE, sending configuration information to the second UE, where the configuration information is used to configure operating parameters of the second UE; receiving feedback information of the second UE after the configuration information is configured in a first preset time period; counting the transmission power when N pieces of information are respectively sent to the first UE and the second UE in a second preset time period, and calculating a transmission power ratio, wherein N is a positive integer; and judging whether the second UE is in a stable state or not according to the feedback information and the transmitting power ratio.

Here, the first preset time period may be set according to the exercise state information of the user. For example, if the motion state of the user can be detected during the detection time period [0, t1], and t1 is small enough, wherein the motion state of the user can be still, low-speed motion, or high-speed motion, at this time, the detection time period [0, t1] can be set as a first preset time period, and generally, the first preset time period can be [0,10], [0,20], [0,30], [0,40], [0,50], or [0,60], etc., in seconds; the second preset time period can be set according to the first preset time period; here, the method for setting the first preset time period and the second preset time period in the embodiment of the present invention is not limited to the above.

Here, the transmission power ratio is a power allocation ratio of the first UE and the second UE, and in the embodiment of the present invention, the transmission power ratio and the power allocation ratio are both a ratio of transmission power allocated by the wireless transceiver to the first UE and the second UE.

Further, the configuration information includes first precoding information of the second UE;

judging whether the angular variance of the precoding vector in the first precoding information and the ratio variance of the transmitting power ratio are respectively lower than a first preset variance threshold and a second preset variance threshold; when the angle variance is lower than a first preset variance threshold and the ratio variance is lower than a second preset variance threshold, determining that the second UE is in a stable state; and when the angle variance is higher than a first preset variance threshold value or the ratio variance is higher than a second preset variance threshold value, determining that the second UE is in an unstable state.

Here, the first preset variance threshold and the second preset variance threshold may be set according to an actual engineering experience value, and may be a number of (0, 1); in general, the smaller the variance, the smaller the angle change value of the precoding vector, the more stable the second UE is; wherein the second UE is stable means that the second UE is in a stationary or quasi-stationary state; here, the method for setting the first preset variance threshold and the second preset variance threshold in the embodiment of the present invention is not limited to the above.

Further, respectively judging whether a second angular variance of a second precoding vector in the second precoding information and a third angular variance of a third precoding vector in the third precoding information are higher than a third preset variance threshold value; determining that the first UE and/or the second UE is in an unstable state when the second angular variance and/or the third angular variance is higher than a third preset variance threshold; when the second angle variance and the third angle variance are lower than a third preset variance threshold, determining that the first UE and the second UE are in a stable state.

Here, the third preset variance threshold may also be set according to an actual engineering experience value, and may be a number of (0, 1); in general, the smaller the variance, the smaller the angle change value of the precoding vector, the more stable the first UE and the second UE.

The specific process of judgment is as follows:

first, assuming that a first UE (near-end UE) and a second UE (far-end UE) are in dynamic scheduling, the wireless transceiver performs statistical analysis on the precoding and power allocation ratio of the second UE. If the angle variance of the precoding vector is lower than a certain set value, the precoding vector is considered to be stable in a certain precoding vector; for the power allocation ratio, the wireless transceiver counts the variance and the mean of the transmission power ratio, and if the variance is smaller than a set threshold, a stable value of the transmission power ratio can be determined.

The calculation method of the angle deviation of the precoding vector comprises the following steps:

cosα＝(v1*v2)/(|v1||v2|) (1)

further, the wireless transceiver initiates a scheduling mechanism of the MUST when the second UE is determined to be in a stable state, and selects one from the transmit power ratios as a target transmit power ratio.

＝E{[X-E(X)]²} (2)

The angular deviation of the second UE may be calculated based on equation (1), and the variance of the angular deviation may be counted further based on equation (2). And if the variance of the angle deviation is smaller than a set threshold, the precoding vector is considered to be in a stable state.

Assuming that the power allocation ratio of the second UE is, based on equation 2, the wireless transceiver may perform variance calculation on the power allocation ratio of the second UE. If the variance is below the set threshold, the second UE is considered to be in a stable state in terms of power allocation ratio.

Based on the above two calculations, if the variance of the two statistical values is lower than the set threshold, the second UE may be considered to be in a stable state, and the wireless transceiver may initiate a semi-persistent scheduling command.

In the embodiment of the invention, the base station sends RRC signaling to the first UE so as to activate the MUST quasi-static scheduling process. For example, assuming that a cell has two UEs participating in the MUST persistent scheduling mechanism, the base station selects a UE with a low link loss and a short distance from the two UEs as a first UE, and sends an RRC signaling to the first UE.

The following steps are the activation process of the quasi-static scheduling, as shown in fig. 3-a:

the wireless transceiver transmits semi-static RRC signaling (or MAC-CE signaling) to the first UE to activate the quasi-static scheduling procedure.

Specifically, the activation signaling may be configured based on the following form:

the activation signaling may be RRC signaling. This Information Element (IE) may be placed under the physicalconfigugdedicated and physicalconfigugdedicated scell-r10 to indicate that the UE pre-activates the MUST. The design can be specifically as follows:

must-semiShedEnabled-r14 ENUMERATED{true}

description of the drawings: true denotes active MUST semi-persistent scheduling;

must-period ENUMERATED{10 20 30 40 50}

description of the drawings: 10. 20, 30, 40 and 50 respectively represent that the period of the quasi-static scheduling is 10, 20, 30, 40 and 50 sub-frames;

must-resource ENUMERATED{N}

description of the drawings: n is a value assigned by higher layers to the UE regarding the location of the resource. The method has the function of calculating the PUCCH resource position occupied by the feedback CSI of the near-end UE based on the following formula:

n_PUCCH＝n_CCE+N (3)

wherein n is_PUCCHFor the resource location of CQI on PUCCH, n_CCEIs the CCE number of the PDCCH of the scheduled second UE. And N is a parameter configured by a higher layer.

must-Case ENUMERATED{0 1 2}

Description of the drawings: 0. 1, 2 respectively represent descriptions: 0. 1, 2 represent the MUST mode cases 1, cases 2, cases 3, respectively;

must-subframeNum ENUMERATED{n}

description of the drawings: n is used for indicating the time for starting the quasi-static scheduling, namely the first UE starts to receive the DCI signaling related to the MUST at the nth subframe after receiving the RRC signaling of the quasi-static scheduling;

must-Powerratio ENUMERATED{0 1 2 3 4 5}

description of the drawings: 0. 1, 2, 3, 4 and 5 are transmit power ratio indications, respectively

must-Modumod ENUMERATED{0 1 2}

Description of the drawings: 0. 1 and 2 are modulation combination configurations, respectively, corresponding to (QPSK ) (16QAM, QPSK) (64QAM, QPSK).

Step 202: the wireless transceiver generates scheduling information for the MUST and generates scheduling instructions according to preset periods in the activation instructions by the scheduling information; the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, and the second UE is a UE in the UE set different from the first UE.

Here, the scheduling instruction includes downlink control information, DCI, signaling;

further, before the wireless transceiver generates scheduling information for the MUST, modulation information of a second UE and a target transmission power ratio of the first UE and the second UE are acquired, the second UE is a UE different from the first UE in the UE set, and then the scheduling information is generated according to the modulation information and the target transmission power ratio of the first UE and the second UE.

In the embodiment of the invention, the wireless transceiver configures DCI information related to MUST according to a period configured in RRC signaling, wherein the DCI information comprises a transmission power ratio (the transmission power ratio of first UE and second UE), modulation information of the second UE and the like, and sends the DCI signaling to the first UE.

Step 203: and the wireless transceiver sends the scheduling instruction to the first UE for the first UE to analyze the MUST information.

Further, the wireless transceiver transmits the scheduling command to the first UE through a Physical Downlink Control Channel (PDCCH).

Further, the searching for the scheduling instruction for the first UE in the PDCCH subframe according to the activation instruction comprises: and searching DCI (downlink control information) signaling aiming at the first UE in the PDCCH information according to the RRC signaling or the MAC-CE signaling to acquire the scheduling information.

Further, activation confirmation information sent by the first UE is received, wherein the activation confirmation information is used for prompting a scheduling mechanism of activated MUST and instructing the wireless transceiver to send MUST information to the first UE.

In the embodiment of the invention, after the wireless transceiver sends the scheduling instruction to the first UE and indicates the first UE to receive the MUST scheduling RRC signaling, the wireless transceiver searches DCI information of MUST according to MUST scheduling configuration information in the RRC signaling so as to implement a MUST signal receiving process.

Further, the wireless transceiver receives second preset coding information and third preset coding information respectively sent by the first UE and the second UE within a third preset time period; respectively judging whether the first UE and the second UE are in a stable state or not according to a second precoding vector in the second preset coding information and a third precoding vector in the third preset coding information; when at least one of the first UE and the second UE is in an unstable state, sending a deactivation instruction to the first UE, where the deactivation instruction is used to terminate a scheduling mechanism of a MUST of the first UE, as shown in fig. 3-b;

or, the wireless transceiver counts the number of times of receiving HARQ in a fourth preset time period, wherein the HARQ is used for requesting retransmission of the MUST information; judging whether the receiving times of the HARQ is greater than a preset retransmission threshold value or not; when the number of HARQ receptions is greater than a preset retransmission threshold, determining that the first UE and/or the second UE are in an unstable state, and sending a deactivation instruction to the first UE, as shown in fig. 3-b.

Here, the third preset time period may be set according to the exercise state information of the user. For example, if the motion state of the user can be detected during the detection time period [0, t1], and t1 is small enough, wherein the motion state of the user can be still, low-speed motion, or high-speed motion, at this time, the detection time period [0, t1] can be set as a first preset time period, and generally, the first preset time period can be [0,10], [0,20], [0,30], [0,40], [0,50], or [0,60], etc., in seconds; the fourth preset time period may be set to [0, t ], optionally 30, 40, 50 or 60.

Here, the number of retransmissions of HARQ represents the current packet error rate level, i.e. if the number of retransmissions is high, indicating that the current quasi-static scheduling scheme is not ideal, the wireless transceiver needs to consider removing the current quasi-static scheduling scheme. In the invention, a statistical threshold of HARQ retransmission times in unit time is set. If the number of HARQ retransmissions per unit time is higher than a predetermined threshold (e.g. 3, 4 or 5), it indicates that the current quasi-static scheduling scheme does not conform to the current channel state information, and therefore, the wireless transceiver performs a de-quasi-static scheduling deactivation procedure.

Since the first UE and the second UE both need to feed back PMIs. Based on equation (1) and equation (2), the wireless transceiver may calculate the stability of the precoding vectors of the first UE and the second UE. If the statistical variance is large, it indicates that the channel conditions of the two UEs are in an unstable state. In this case, it is not appropriate to employ the MUST quasi-static scheduling, the deactivation procedure should be performed. In the present invention, a deactivated precoding variance threshold may be set, which may be the same as or different from the precoding variance threshold for activating quasi-static scheduling. And if the statistical precoding variance is higher than the preset precoding variance threshold, the wireless transceiver executes a deactivation process.

As shown in fig. 3-b, the specific process of the deactivation mechanism proposed by the present invention is as follows:

the method comprises the following steps: the wireless transceiver sends deactivation signaling to the first UE;

step two: after receiving the deactivation signaling, the first UE may stop the search for the DCI signaling related to the MUST.

In particular, the MUST deactivation signaling may be implemented by two aspects:

deactivation is achieved through upper layer signaling, including RRC signaling or MAC-CE signaling.

The deactivated Information Element (IE) may be placed under the PhysicConfigDedcated and PhysicConfigDedcatedSCell-r 10 to instruct the UE to deactivate the MUST.

must-desemiShedEnabled-r14 ENUMERATED{true}

Description of the drawings: true represents deactivation of MUST semi-persistent scheduling;

furthermore, as shown in fig. 3-b, the MUST deactivation can also be directly implemented by DCI signaling: namely, a MUST deactivation indication bit is added in MUST DCI signaling of the PDCCH at the last time of semi-persistent scheduling, so that the MUST is deactivated.

To implement the foregoing method, a first embodiment of the present invention further provides a wireless transceiver, as shown in fig. 4, where the wireless transceiver includes: a sending module 21 and a processing module 22, wherein,

a sending module 21, configured to send an activation instruction to a first UE, where the first UE is a UE in a UE set for a MUST, and the activation instruction is used to activate a scheduling mechanism for multi-user superposition transmission MUST of the first UE;

the processing module 22 is configured to generate scheduling information for the MUST, and generate a scheduling instruction according to a preset period in the activation instruction from the scheduling information; the scheduling information comprises modulation information of a second UE and a target transmission power ratio of the first UE and the second UE, wherein the second UE is a UE different from the first UE in the UE set;

before generating scheduling information for the MUST, the processing module 22 acquires modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, where the second UE is a UE in the UE set different from the first UE, and then generates the scheduling information according to the modulation information and the target transmit power ratio of the first UE to the second UE.

The sending module 21 is further configured to send the scheduling instruction to the first UE, so that the first UE can analyze the MUST information.

1) indication of semi-static or non-semi-static scheduling

2) Periodicity of MUST scheduling, and/or scheduling resource indication of MUST

3) Relevant configurations of the MUST transmission include MUST scenario indications (case1, case2, case3), candidate transmit power ratio values, and modulation combination parameters.

Further, the sending module 21: and specifically configured to send the scheduling instruction to the first UE through the PDCCH.

The sending module 21 is further configured to send configuration information to the second UE, where the configuration information is used to configure the operation parameters of the second UE.

Further, the wireless transceiver further comprises:

a receiving module 23, configured to receive, within a first preset time period, feedback information of the second UE after configuring the configuration information, where the configuration information includes first precoding information of the second UE.

The sending module 21 is further configured to count, in a second preset time period, transmission powers when N pieces of information are sent to the first UE and the second UE, respectively, and calculate a transmission power ratio, where N is a positive integer.

And a determining module 24, configured to determine whether the second UE is in a stable state according to the feedback information and the transmit power ratio.

The processing module 22 is further configured to, when the determining module 24 determines that the second UE is in the stable state, start a scheduling mechanism of the MUST, and select one from the transmission power ratios as a target transmission power ratio.

Further, the determining module 24 includes:

a first determining sub-module 241, configured to determine whether an angle variance of a precoding vector in the first precoding information and a ratio variance of the transmit power ratio are lower than a first preset variance threshold and a second preset variance threshold, respectively;

A first determining sub-module 242, configured to determine that the second UE is in a stable state when the angle variance is lower than a first preset variance threshold and the ratio variance is lower than a second preset variance threshold;

the first determining sub-module 242 is further configured to determine that the second UE is in an unstable state when the angular variance is higher than a first preset variance threshold or the ratio variance is higher than a second preset variance threshold.

Further, the receiving module 23 is further configured to receive activation confirmation information sent by the first UE, where the activation confirmation information is used to prompt a scheduling mechanism of activated MUST and instruct the wireless transceiver to send MUST information to the first UE.

The specific process of judgment is as follows:

first, assuming that the near end and the second UE are in dynamic scheduling, the statistical module 26 performs statistical analysis on the precoding and power allocation ratio of the second UE. If the angle variance of the precoding vector is lower than a certain set value, the precoding vector is considered to be stable in a certain precoding vector; for the power allocation ratio, the wireless transceiver counts the variance and the mean of the transmission power ratio, and if the variance is smaller than a set threshold, a stable value of the transmission power ratio can be determined.

Assuming that the power allocation ratio of the second UE is, based on equation 2, the variance calculation may be performed on the power allocation ratio of the second UE. If the variance is below the set threshold, the second UE is considered to be in a stable state in terms of power allocation ratio.

Based on the above two calculations, if the variance of the two statistical values is lower than the set threshold, the second UE may be considered to be in a stable state, and the processing module 22 may start a semi-persistent scheduling instruction.

In the embodiment of the present invention, the sending module 21 sends an RRC signaling to the first UE to activate the MUST quasi-static scheduling process. For example, assuming that a cell has two UEs participating in the MUST persistent scheduling mechanism, the sending module 21 selects a UE with a smaller link loss and a shorter distance from the two UEs as a first UE, and then sends an RRC signaling to the first UE.

The following steps are the activation process of the quasi-static scheduling:

the method comprises the following steps: the wireless transceiver transmits semi-static RRC signaling (or MAC-CE signaling) to the first UE to activate the quasi-static scheduling procedure.

must-semiShedEnabled-r14 ENUMERATED{true}

must-period ENUMERATED{10 20 30 40 50}

must-resource ENUMERATED{N}

description of the drawings: n is a value assigned by higher layers to the UE regarding the location of the resource.

must-Case ENUMERATED{0 1 2}

must-subframeNum ENUMERATED{n}

must-Powerratio ENUMERATED{0 1 2 3 4 5}

description of the drawings: 0. 1, 2, 3, 4, 5 are transmit power ratio indications, respectively

must-Modumod ENUMERATED{0 1 2}

Description of the drawings: 0. 1, 2 are modulation combination configurations respectively corresponding to (QPSK ) (16QAM, QPSK) (64QAM, QPSK).

Further, the receiving module 23 is further configured to receive second preset coding information and third preset coding information, which are sent by the first UE and the second UE respectively, in a third preset time period;

here, the third preset time period may be set according to the exercise state information of the user. For example, if the motion state of the user is detected during the detection time period [0, t1], and t1 is small enough, wherein the motion state of the user can be still, low-speed motion, or high-speed motion, the detection time period [0, t1] can be set as a first preset time period, and generally, the first preset time period can be [0,10], [0,20], [0,30], [0,40], [0,50], or [0,60], and the like, and the unit is seconds.

The determining module 24 is further configured to respectively determine whether the first UE and the second UE are in a stable state according to a second precoding vector in the second preset coding information and a third precoding vector in the third preset coding information;

the sending module 21 is further configured to send a deactivation instruction to the first UE when at least one of the first UE and the second UE is in an unstable state, where the deactivation instruction is used to terminate a scheduling mechanism of a MUST of the first UE;

alternatively, the wireless transceiver further comprises:

a counting module 25, configured to count the number of times that an HARQ is received in a fourth preset time period, where the HARQ is used to request retransmission of the MUST information;

here, the fourth preset time period may be set to [0, t ], optionally 30, 40, 50 or 60.

The determining module 24 is further configured to determine whether the number of HARQ receptions is greater than a preset retransmission threshold;

a determining module 26, configured to determine that the first UE and/or the second UE are in an unstable state when the number of HARQ receptions is greater than a preset retransmission threshold;

the sending module 21 is further configured to send a deactivation instruction to the first UE when it is determined that the first UE and/or the second UE are in an unstable state.

Further, the determining module 24 includes:

a second determining sub-module 243, configured to determine whether a second angular variance of a second precoding vector in the second precoding information and a third angular variance of a third precoding vector in the third precoding information are higher than a third preset variance threshold, respectively;

a second determining sub-module 244, configured to determine that the first UE and/or the second UE is in an unstable state when the second angular variance and/or the third angular variance is higher than a third preset variance threshold;

the second determining sub-module 244 is further configured to determine that the first UE and the second UE are in a stable state when the second angle variance and the third angle variance are lower than a third preset variance threshold.

Here, the retransmission number of the HARQ represents a current packet error rate level, the counting module 25 counts the retransmission number of the HARQ, the determining module 24 determines whether the retransmission number is greater than a preset retransmission threshold, and the determining module 26 determines that the first UE and/or the second UE is in an unstable state when the determining module 24 determines that the reception number of the HARQ is greater than the preset retransmission threshold, which indicates that the current quasi-static scheduling scheme is not ideal, and then needs to be considered to remove the current quasi-static scheduling scheme; or the determining module 24 determines whether the angle variance of the precoding vectors of the first UE and the second UE is greater than a preset angle threshold, and if one of the angle variances of the precoding vectors of the first UE and the second UE is greater than the preset angle threshold, it is determined that the first UE and/or the second UE is in an unstable state, which indicates that the current quasi-static scheduling scheme is not ideal, the current quasi-static scheduling scheme needs to be removed. In the invention, a statistical threshold of HARQ retransmission times in unit time is set. And if the HARQ retransmission times in unit time is higher than a set threshold, indicating that the current quasi-static scheduling scheme does not conform to the current channel state information, and executing a de-quasi-static scheduling deactivation process.

Since the near end and the second UE both need to feed back PMIs. Based on formula (1) and formula (2), the determining module 24 may determine the stability of the first UE and the second UE through the precoding vectors of the first UE and the second UE. If the statistical variance is large, it indicates that the channel conditions of the two UEs are in an unstable state. In this case, it is not appropriate to employ the MUST quasi-static scheduling, the deactivation procedure should be performed. In the present invention, a deactivated precoding variance threshold may be set, which may be the same as or different from the precoding variance threshold for activating quasi-static scheduling. And if the statistical precoding variance is higher than a preset precoding variance threshold, performing a deactivation process.

The specific process of the deactivation mechanism proposed by the present invention is as follows:

the method comprises the following steps: the sending module 21 sends a deactivation signaling to the first UE;

must-desemiShedEnabled-r14 ENUMERATED{true}

the MUST deactivation can also be achieved directly by DCI signaling: namely, a MUST deactivation indication bit is added in MUST DCI signaling of the PDCCH at the last time of semi-persistent scheduling, so that the MUST is deactivated.

Through the scheme of the embodiment of the invention, when the first UE and the second UE are in a relatively static or slow-moving scene, the transmission mode of the second UE is basically stable, and under the condition, the first UE does not need to add extra DCI signaling in each frame to indicate the transmission condition of the second UE, so that the signaling overhead and the resource waste are reduced, and the calculation complexity of the UE is also reduced.

Example two

Fig. 5 is a schematic flow chart illustrating an implementation of a scheduling method based on multi-user superposition transmission according to a second embodiment of the present invention, as shown in fig. 5, the scheduling method includes:

step 501: the first UE receives an activation instruction sent by the wireless transceiver, wherein the activation instruction is used for activating a scheduling mechanism of the MUST of the first UE, and the first UE is a UE in a UE set used for the MUST.

Here, the scheduling mechanism of the MUST is a MUST semi-static scheduling mechanism, or a MUST quasi-static scheduling mechanism; wherein the activation signaling includes, but is not limited to:

1) indication of semi-static or non-semi-static scheduling

4) Indication of the start time or the reception subframe time of the MUST, i.e. the first UE will search for the DCI signaling related to the MUST in the following several subframes after receiving the MUST scheduling signaling (RRC signaling).

Step 502: the method comprises the steps that a first UE receives a scheduling instruction sent by a wireless transceiver, and acquires scheduling information according to the scheduling instruction, so that the first UE can analyze MUST information; the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, and the second UE is a UE different from the first UE in the UE set.

Further, after receiving the activation instruction sent by the wireless transceiver, the first UE sends activation confirmation information to the wireless transceiver, wherein the activation confirmation information is used for prompting a scheduling mechanism of activated MUST and instructing the wireless transceiver to send MUST information to the first UE; when the MUST information is received, analyzing the MUST information according to the modulation information and a target transmission power ratio to obtain user data aiming at the first UE.

Further, before analyzing the MUST information according to the modulation information and a target transmission power ratio, detecting whether error codes occur in user data belonging to the first UE in the MUST information; and if the user data has error codes, transmitting HARQ to the wireless receiver, wherein the HARQ is used for requesting retransmission of the MUST information.

Further, the first UE receives the scheduling instruction sent by the wireless transceiver; searching for a scheduling instruction for the first UE in the PDCCH subframe according to the activation instruction.

Further, after receiving a deactivation command sent by the wireless transceiver, the first UE terminates searching for the scheduling command for the first UE in the PDCCH subframe.

In the embodiment of the invention, a wireless transceiver sends RRC signaling or MAC-CE signaling and DCI signaling to first UE, wherein the DCI signaling comprises modulation information of second UE and power distribution ratio of the first UE and the second UE; after receiving RRC signaling or MAC-CE signaling and DCI signaling, first UE searches DCI information of MUST in a PDCCH subframe according to MUST scheduling configuration information in the RRC signaling so as to obtain the modulation information in the DCI signaling and the power distribution ratio of the first UE and second UE; the first UE performs parsing of the MUST information according to the obtained information, thereby obtaining transmission data attributed to the first UE.

In order to implement the foregoing method, a schematic diagram of a structure of a first UE is further provided in the second embodiment of the present invention, and as shown in fig. 6, the structure of the first UE includes: a receiving module 61 and an obtaining module 62, wherein,

a receiving module 61, configured to receive an activation instruction sent by the wireless transceiver, where the activation instruction is used to activate a scheduling mechanism of a MUST of a first UE, and the first UE is a UE in a UE set used for the MUST.

1) indication of semi-static or non-semi-static scheduling

The receiving module 61 is further configured to receive a scheduling instruction sent by the wireless transceiver.

Here, the scheduling instruction includes downlink control information, DCI, signaling.

An obtaining module 62, configured to obtain scheduling information according to the scheduling instruction, so that the first UE may analyze the MUST information; the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, and the second UE is a UE different from the first UE in the UE set.

Further, the first user equipment further comprises: a searching module 63, configured to search for a scheduling instruction for the first UE in the PDCCH subframe according to the activation instruction.

Further, the first UE further comprises: a terminating module 64, configured to terminate the search for the scheduling instruction for the first UE in the PDCCH subframe after receiving a deactivation instruction sent by the wireless transceiver.

Further, the first user equipment further comprises: a sending module 65, configured to send, after the receiving module 61 receives the activation instruction sent by the wireless transceiver, activation confirmation information to the wireless transceiver, where the activation confirmation information is used to prompt a scheduling mechanism of activated MUST and instruct the wireless transceiver to send MUST information to the first UE;

an analyzing module 66, configured to, after the receiving module 61 receives the MUST information, analyze the MUST information according to the modulation information and a target transmit power ratio to obtain user data for the first UE.

Specifically, after searching the scheduling command for the first UE in the PDCCH subframe according to the activation command, the searching module 63 sends activation confirmation information to the wireless transceiver, where the activation confirmation information is used to prompt a scheduling mechanism of activated MUST and instruct the wireless transceiver to send MUST information to the first UE; when the receiving module 61 receives the MUST information, the obtaining module 62 analyzes the MUST information according to the modulation information and the target transmit power ratio to obtain the user data for the first UE.

Further, the first UE further comprises: a detecting module 67, configured to detect whether an error occurs in user data belonging to the first UE in the MUST information before the parsing module 66 parses the MUST information according to the modulation information and the target transmit power ratio;

the sending module 65 is further configured to send HARQ to the wireless receiver when the user data has an error code, where the HARQ is used to request retransmission of the MUST information.

Specifically, the detecting module 67 detects whether error occurs in the user data belonging to the first UE in the MUST information before analyzing the MUST information according to the modulation information and the target transmit power ratio; the sending module 65 sends HARQ to the wireless receiver when the user data has an error, where the HARQ is used to request retransmission of the MUST information.

After receiving the deactivation command sent by the wireless transceiver of the module 61, the searching module 63 searches the scheduling command for the first UE in the PDCCH subframe according to the activation command.

After the receiving module 61 receives the deactivation instruction sent by the wireless transceiver, the terminating module 64 terminates searching for the scheduling instruction for the first UE in the PDCCH subframe.

In the embodiment of the present invention, a receiving module 61 of a first UE receives an RRC signaling or an MAC-CE signaling and a DCI signaling, and a searching module 63 searches DCI information of a MUST in PDCCH information according to MUST scheduling configuration information in the RRC signaling, so as to obtain modulation information in the DCI signaling and a power allocation ratio between the first UE and a second UE; the parsing module 66 performs parsing of the MUST information according to the obtained information, thereby obtaining transmission data attributed to the first UE.

Through the scheme of the embodiment of the invention, when the first UE and the second UE are in a relatively static or slow-moving scene, the first UE can correctly demodulate the self data only by knowing the modulation information and the power distribution ratio (the power distribution ratio of the first UE and the second UE) of the second UE. Therefore, the simplification of the control signaling is realized, the process of searching the control information by the UE is simplified, the control channel resource is saved, and the rapidity of searching the UE is improved.

In practical applications, the sending module 21, the receiving module 23, the determining module 24 (including the first sub-module 241, the first determining sub-module 242, the second sub-module 243, and the second determining sub-module 244), the counting module 25, and the determining module 26 in the wireless transceiver may be implemented by a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA), etc. located in the wireless transceiver.

Similarly, in practical application, the receiving module 61, the obtaining module 62, the searching module 63, the terminating module 64, the sending module 65, the analyzing module 66, and the detecting module 67 in the first UE may be implemented by a Central Processing Unit (CPU), a microprocessor unit (MPU), a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA) located in the first UE.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and scope of the present invention are included in the protection scope of the present invention.

Claims

1. A scheduling method based on multi-user superposition transmission, the method comprising:

sending an activation instruction to a first User Equipment (UE), wherein the first UE is a UE in a UE set for multi-user superposition transmission (MUST), and the activation instruction is used for activating a scheduling mechanism of the multi-user superposition transmission (MUST) of the first UE;

sending the scheduling instruction to the first UE for the first UE to analyze MUST information;

before sending the activation instruction to the first UE, the method further includes sending configuration information to the second UE, where the configuration information is used to configure an operation parameter of the second UE; receiving feedback information of the second UE after the configuration information is configured in a first preset time period; counting the transmission power when N pieces of information are respectively sent to the first UE and the second UE in a second preset time period, and calculating a transmission power ratio, wherein N is a positive integer; judging whether the second UE is in a stable state or not according to the feedback information and the transmitting power ratio; and when the second UE is determined to be in a stable state, starting a scheduling mechanism of the MUST, and acquiring the target transmitting power ratio according to the transmitting power ratio.

2. The scheduling method of claim 1, wherein the sending the scheduling instruction to the first UE comprises:

and sending the scheduling instruction to the first UE through a Physical Downlink Control Channel (PDCCH).

3. The scheduling method of claim 2 wherein the configuration information comprises first precoding information of the second UE;

4. The scheduling method of claim 3, wherein the method further comprises:

and receiving activation confirmation information sent by the first UE, wherein the activation confirmation information is used for prompting a scheduling mechanism of the activated MUST and instructing a wireless transceiver to send MUST information to the first UE.

5. The scheduling method of claim 1, wherein the method further comprises:

receiving second preset coding information and third preset coding information which are respectively sent by the first UE and the second UE in a third preset time period;

alternatively, the first and second electrodes may be,

counting the times of receiving hybrid automatic repeat request (HARQ) in a fourth preset time period, wherein the HARQ is used for requesting to retransmit the MUST information;

6. The scheduling method according to claim 5, wherein the determining whether the first UE and the second UE are in a stable state according to the second precoding vector in the second preset coding information and the third precoding vector in the third preset coding information respectively comprises:

7. A scheduling method based on multi-user superposition transmission, the method comprising:

receiving a scheduling instruction sent by a wireless transceiver, and acquiring scheduling information according to the scheduling instruction, so that the first UE can analyze MUST information; wherein the scheduling information includes modulation information of a second UE and a target transmit power ratio of the first UE to the second UE, the second UE being a different UE in the set of UEs from the first UE;

the wireless transceiver is configured to send configuration information to the second UE, where the configuration information is used to configure operating parameters of the second UE; receiving feedback information of the second UE after the configuration information is configured in a first preset time period; counting the transmission power when N pieces of information are respectively sent to the first UE and the second UE in a second preset time period, and calculating a transmission power ratio, wherein N is a positive integer; judging whether the second UE is in a stable state or not according to the feedback information and the transmitting power ratio; and when the second UE is determined to be in a stable state, starting a scheduling mechanism of the MUST, and acquiring the target transmitting power ratio according to the transmitting power ratio.

8. The method for scheduling according to claim 7, wherein the method further comprises:

and searching a scheduling instruction aiming at the first UE in a PDCCH subframe according to the activation instruction.

9. The method for scheduling according to claim 8, wherein the method further comprises:

and after a deactivation instruction sent by a wireless transceiver is received, terminating the search for the scheduling instruction aiming at the first UE in the PDCCH subframe.

10. The scheduling method according to claim 8 or 9, wherein after receiving the activation command transmitted by the wireless transceiver, the method further comprises:

11. The method for scheduling as claimed in claim 10, wherein before said parsing the MUST information according to the modulation information and target transmit power ratio, the method further comprises:

and if the user data has error codes, transmitting HARQ to a wireless receiver, wherein the HARQ is used for requesting retransmission of the MUST information.

12. A wireless transceiver, characterized in that the wireless transceiver comprises:

a sending module, configured to send an activation instruction to a first user equipment UE, where the first UE is a UE in a UE set for MUST, and the activation instruction is used to activate a scheduling mechanism of the MUST of the first UE;

the sending module is further configured to send the scheduling instruction to the first UE, so that the first UE can analyze the MUST information; before sending an activation instruction to a first UE, sending configuration information to a second UE, wherein the configuration information is used for configuring operation parameters of the second UE;

13. The wireless transceiver of claim 12, wherein the sending module is specifically configured to send the scheduling instruction to the first UE through a PDCCH.

14. The wireless transceiver of claim 12, wherein the configuration information comprises first precoding information for the second UE;

the judging module comprises:

15. The wireless transceiver of claim 14,

the receiving module is further configured to receive activation confirmation information sent by the first UE, where the activation confirmation information is used to prompt a scheduling mechanism of an activated MUST and instruct the wireless transceiver to send MUST information to the first UE.

16. The wireless transceiver of claim 12,

the receiving module is further configured to receive second preset coding information and third preset coding information, which are sent by the first UE and the second UE respectively, within a third preset time period;

alternatively, the first and second electrodes may be,

the wireless transceiver further comprises:

17. The wireless transceiver of claim 16, wherein the determining module comprises:

a second determining sub-module, configured to respectively determine whether a second angular variance of a second precoding vector in the second precoding information and a third angular variance of a third precoding vector in the third precoding information are higher than a third preset variance threshold;

18. A first user equipment, UE,

an obtaining module, configured to obtain scheduling information according to the scheduling instruction, so that the first UE may analyze the MUST information; the scheduling information includes modulation information of second UE and a target transmission power ratio of the first UE and the second UE, the second UE is UE which is different from the first UE in the UE set, the transmission power ratio is generated by a wireless transceiver according to transmission power statistics when the wireless transceiver respectively sends N pieces of information to the first UE and the second UE within a preset time period, and N is a positive integer.

19. The first UE of claim 18, wherein the first UE comprises:

and the searching module is used for searching the scheduling instruction aiming at the first UE in the PDCCH subframe according to the activation instruction.

20. The first UE of claim 19, wherein the first UE further comprises:

and the termination module is used for terminating the search of the scheduling instruction aiming at the first UE in the PDCCH subframe after receiving a deactivation instruction sent by a wireless transceiver.

21. The first UE of claim 19 or 20, wherein the first UE further comprises:

a sending module, configured to send, after the receiving module receives an activation instruction sent by a wireless transceiver, activation confirmation information to the wireless transceiver, where the activation confirmation information is used to prompt a scheduling mechanism of activated MUST and instruct the wireless transceiver to send MUST information to the first UE;

22. The first UE of claim 21, wherein the first UE further comprises:

a detection module, configured to detect whether an error occurs in user data belonging to the first UE in the MUST information before analyzing the MUST information according to the modulation information and a target transmit power ratio;

the sending module is further configured to send HARQ to a wireless receiver when the user data has an error code, where the HARQ is used to request retransmission of the MUST information.

23. A multi-user superposition transmission system, characterized in that the multi-user superposition transmission system comprises a wireless transceiver, a first UE and a second UE; wherein the content of the first and second substances,

the wireless transceiver is the wireless transceiver of claims 12 to 17;

the first UE is the first UE of claims 18-22;