WO2018028271A1

WO2018028271A1 - Control information transmission method, equipment and communication system

Info

Publication number: WO2018028271A1
Application number: PCT/CN2017/085928
Authority: WO
Inventors: 朱广勇
Original assignee: 深圳市金立通信设备有限公司
Priority date: 2016-08-10
Filing date: 2017-05-25
Publication date: 2018-02-15
Also published as: CN107734706A

Abstract

Disclosed in embodiments of the present invention are a control information transmission method, equipment, and a communication system. The method comprises: determining a first scheduling mode for currently performing an uplink data scheduling for a terminal, wherein the first scheduling mode comprises self-scheduling or cross-carrier scheduling; monitoring several parameters in a wireless communication network; dynamically adjusting the first scheduling mode according to the result of monitoring the several parameters in the wireless communication network; sending the control information which carries the scheduling mode for indicating the adjusted scheduling mode to the terminal; and subsequently adopting the adjusted scheduling mode to perform uplink data scheduling for the terminal. The implementation of the embodiments of the present invention can improve system performance.

Description

Control information transmission method, device and communication system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a control information transmission method, device, and communication system.

Background technique

The Licensed Assisted Access (LAA) system can use unlicensed spectrum (such as 5 GHz spectrum) with the help of licensed spectrum in Long Term Evolution (LTE) systems. The Listening Before Talk (LBT) mechanism is required on the unlicensed frequency band in the LAA system. That is, before the data is sent, it is necessary to monitor whether the state of the channel is idle. If the channel is idle, the data information and control information are performed. Send, otherwise no transmission.

In practice, it is found that the scheduling modes supported by the LAA system are classified into self-scheduling and cross-carrier scheduling. In the LAA system, due to frequent changes in the LBT results, cross-carrier scheduling should be used as much as possible to improve the scheduling success rate when the LBT fails. When the LBT succeeds, self-scheduling needs to be adopted as much as possible to avoid excessive signaling overhead. However, whether the terminal supports cross-carrier scheduling is configured through a field of Radio Resource Control (RRC) signaling, and the flexibility of the semi-static configuration is not strong due to the long update time of the RRC signaling. Reduce system performance.

Summary of the invention

Embodiments of the present invention provide a control information transmission method, device, and communication system, which can improve system performance.

A first aspect of the embodiments of the present invention discloses a control information transmission method, including:

Determining a first scheduling mode for the terminal to perform uplink data scheduling, where the first scheduling mode includes self-scheduling or cross-carrier scheduling;

Monitoring several parameters in a wireless communication network;

Dynamically adjusting the number according to the result of monitoring the parameters in the wireless communication network a scheduling method;

Transmitting to the terminal, carrying control information for indicating the adjusted scheduling manner;

The uplink scheduling is performed for the terminal by using the adjusted scheduling mode.

A second aspect of the embodiments of the present invention discloses a control information transmission method, including:

And transmitting uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling;

Receiving, by the base station, control information that carries the adjusted scheduling mode, where the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted scheduling mode;

The uplink data is sent to the base station according to the adjusted scheduling manner.

A third aspect of the embodiment of the present invention discloses a base station, including:

a determining unit, configured to determine a first scheduling mode for performing uplink data scheduling for the terminal, where the first scheduling mode includes self-scheduling or cross-carrier scheduling;

a monitoring unit, configured to monitor several parameters in the wireless communication network;

An adjusting unit, configured to dynamically adjust the first scheduling mode according to the result of monitoring the parameters in the wireless communication network;

a sending unit, configured to send, to the terminal, control information that is used to indicate the adjusted scheduling manner;

An execution unit is configured to perform uplink data scheduling for the terminal by using the adjusted scheduling manner.

A fourth aspect of the embodiment of the present invention discloses a terminal, including:

The first sending unit is configured to send uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling;

a receiving unit, configured to receive, by the base station, control information that carries the adjusted scheduling mode, where the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted scheduling mode;

The second sending unit is configured to send uplink data to the base station according to the adjusted scheduling manner.

In the embodiment of the present invention, the base station may determine that the terminal is currently performing the first adjustment of uplink data scheduling. The method for monitoring a number of parameters in the wireless communication network, and dynamically adjusting the first scheduling mode according to the result of monitoring the parameters in the wireless communication network. Further, the base station may send the terminal with the indication for adjustment. After the control information of the scheduling mode, the base station can use the adjusted scheduling mode to perform uplink data scheduling for the terminal. It can be seen that, in the embodiment of the present invention, in the LAA system, the base station can flexibly adjust the first scheduling mode of the uplink data scheduling of the terminal according to the result of monitoring the parameters in the wireless communication network, that is, according to different scenario dynamics. The two different scheduling modes are switched. Whether the LBT fails or succeeds, the base station reasonably selects the scheduling mode, improves the scheduling success rate, avoids excessive signaling overhead, and reduces the data transmission error rate, thereby improving system performance.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present invention;

2 is a schematic flowchart of a control information transmission method according to an embodiment of the present invention;

3 is a schematic structural diagram of a base station according to an embodiment of the present invention;

4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

6 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a communication system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second" and the like in the description and claims of the present invention and the drawings of the specification are used to distinguish different objects, and are not intended to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

It is to be understood that the terminology used in the embodiments of the present invention is for the purpose of describing the particular embodiments, and is not intended to limit the invention. The singular forms "a", "the", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be noted that the technical features of the various methods and/or device embodiments of the present invention may be considered as being capable of being combined or combined with each other as long as the combination or combination is not due to the specific description. It cannot be implemented for technical reasons. In order to more fully illustrate the present invention, some exemplary, optional, or preferred features are described in conjunction with other technical features in various embodiments of the present invention, but such a combination is not required and should be understood Exemplary, optional, or preferred features and other technical features are detachable or independent from one another, as long as the detachable or independent is not technically achievable. Some functional descriptions of the technical features in the method embodiments can be understood as performing the functions, methods or steps, and some functional descriptions of the technical features in the device embodiments can be understood as using the devices to perform the functions, methods or steps. .

The techniques described herein can be used in a variety of wireless communication networks, such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access). , FDMA), Orthogonal Division Multiple Access (OFDMA) network, Single-Carrier Frequency-Division Multiple Access (SC-FDMA), and other networks. The terms "network" and " The system is usually used interchangeably. CDMA networks can be implemented such as universal land Wireless technology such as Universal Telecommunication Radio Access (UTRA) and the Telecommunications Industry Association (TIA). UTRA technology includes Wideband CDMA (WCDMA) and other variants of CDMA. Technologies include the IS-2000, IS-95 and IS-856 standards from the Electronic Industries Association (EIA) and TIA. A TDMA network can implement a wireless technology such as Global System for Mobile Communication (GSM). OFDMA systems can be implemented such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wireless Fidelity, Wi-Fi), IEEE 802.16 (Worldwide Interoperability for Worldwide Interoperability) Wireless technology such as Microwave Access, WiMAX), IEEE 802.20, Flash-OFDMA. UTRA and E-UTRA technologies are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newer versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). UMB is described in documents from an organization called "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the wireless networks and wireless access technologies mentioned above, as well as other wireless networks and wireless access technologies. For clarity, certain aspects of the technology are described below for LTE or LTE-A (or collectively referred to as "LTE/-A"), and such LTE/-A terminology is used in many of the descriptions below.

It should be noted that the wireless communication network may include multiple base stations capable of supporting communication of multiple user equipments. The user equipment can communicate with the base station over the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the user equipment, and the uplink (or reverse link) refers to the communication link from the user equipment to the base station.

A user device (eg, a cell phone or smart phone) can utilize a wireless communication system to transmit and receive data for two-way communication. The user equipment may include a transmitter for data transmission and a receiver for data reception. For data transmission, the transmitter can modulate the transmit Local Oscillator (LO) signal with data to obtain a modulated Radio Frequency (RF) signal, and amplify the modulated RF signal to obtain proper transmission. The RF signal is output at the power level and the output RF signal is transmitted to the base station via the antenna. For data Receiving, the receiver can obtain the received RF signal via an antenna, amplify and downconvert the received RF signal with the received LO signal, and process the downconverted signal to recover the data transmitted by the base station.

The user equipment can support communication with multiple wireless systems of different Radio Access Technology (RAT) (eg, LTE/TE-A and NR). Each wireless system may have certain characteristics and requirements to efficiently support simultaneous communication of wireless systems utilizing different RATs. User equipment may include mobile stations, terminals, access terminals, subscriber units, stations, and the like. The user equipment can also be a cellular phone, a smart phone, a tablet computer, a wireless modem, a personal digital assistant (PDA), a handheld device, a laptop computer, a smartbook, a netbook, a cordless phone, a wireless local loop (wireless Local loop, WLL) site, Bluetooth device, and more. The user equipment may be capable of communicating with the wireless system, and may also be capable of receiving signals from a broadcast station, one or more satellites in a Global Navigation Satellite System (GNSS), or the like. The user equipment may support one or more RATs for wireless communication, such as GSM, WCDMA, cdma2000, LTE/LTE-A, 802.11, and the like. The terms "radio access technology", "RAT", "radio technology", "air interface" and "standard" are often used interchangeably.

User equipment can support carrier aggregation, and carrier aggregation is operation on multiple carriers. Carrier aggregation can also be referred to as multi-carrier operation. A carrier can refer to a range of frequencies that are used for communication and can be associated with certain characteristics. For example, a carrier may be associated with system information and/or control information describing operations on the carrier. A carrier may also be referred to as a component carrier (CC), a frequency channel, a cell, and the like. A frequency band can include one or more carriers. Illustratively, each carrier can cover up to 20 MHz. The user equipment can be configured with up to 5 carriers in one or two frequency bands. The user equipment may include multiple receivers to simultaneously receive multiple downlink signals at different frequencies. These multiple downlink signals may be transmitted by one or more base stations on multiple carriers at different frequencies for carrier aggregation. Each receiver may receive one or more downlink signals transmitted to the user equipment on one or more carriers. A UE operating in a carrier aggregation scenario is configured to aggregate certain functions of multiple carriers, such as control and feedback functions, on the same carrier, which may be referred to as a primary carrier or a primary component carrier (PCC). ). Rely on the Lord The remaining carriers supported by the carrier are referred to as associated secondary carriers or secondary component carriers (SCCs). The primary carrier is sent by the primary cell. The secondary carrier is sent by the secondary cell. In some embodiments, there may be multiple primary carriers. In addition, the secondary carrier can be added or removed without affecting the basic operation of the UE. In carrier aggregation, control functions may be aggregated from at least two carriers onto one carrier to form a primary carrier and one or more associated secondary carriers. A communication link can be established for the primary carrier and each secondary carrier. The communication can then be controlled based on the primary carrier. In carrier aggregation, the user equipment may also send a UE capability information message indicating the supported frequency band and carrier aggregation bandwidth class to the serving base station. Depending on the UE capabilities, the serving base station can configure the UE using an RRC connection reconfiguration procedure. The RRC connection reconfiguration procedure allows the serving base station to add and remove secondary cells (currently up to four secondary cells) of the serving base station transmitting on the secondary carrier, and to modify the primary cell of the serving base station transmitting on the primary carrier. During handover, the serving base station may use the RRC Connection Reconfiguration procedure to add and remove secondary cells at the target primary cell. The serving base station can activate or deactivate the data transmission of the secondary cell using the Activate/Deactivate MAC Control element. Currently, the UE monitors the Master Information Block (MIB) and the System Information Block SIB from the primary cell. The primary cell is responsible for transmitting the MIB of the secondary cell and some SIBs to the UE. The primary cell sends a secondary cell MIB and some SIBs by using a radio resource configuration common secondary cell (RadioResourceConfigCommonSCell) information element and a radio resource dedicated secondary cell (RadioResourceDedicatedSCell) information element. In some embodiments of the present invention, the primary carrier or the primary component carrier may be configured as a first spectrum, and the first spectrum may be a licensed spectrum; the associated secondary carrier or secondary component carrier may be configured as a second spectrum, The second spectrum is an unlicensed spectrum.

It should be noted that in the LTE/LTE-A system, the uplink/downlink carriers adopt Single-Carrier Frequency-Division Multiple Access (SC-FDMA)/OFDM and Cyclic Prefix (CP) respectively. ). In the 5G standard, for example, the uplink and downlink carriers can be unified, that is, both uplink and downlink adopt OFDM and CP. In another example, the RB in the 5G may be configured as follows, one resource block includes 12 subcarriers, the subcarrier spacing is based on 15 kHz, and the subcarrier spacing may be N (N=2^n) times of 15 kHz, or It can be fixed to a subcarrier spacing of 75 kHz. Specifically, the bandwidth of the traditional LTE cell working in the frequency band is composed of RBs, and the RBs have fixed subcarrier spacing and symbol length, for example, under normal CP. The size in the frequency domain is 180KHz (ie, 12 15KHz subcarrier spacings), and in the time domain, including 7 symbols, the length of one symbol is approximately equal to 71.5us. In the next generation of 5G mobile communication technologies (for example, in the NR system), different subcarriers may no longer have a fixed subcarrier spacing and a fixed symbol length (which may be dynamically changed) based on the traffic type. To distinguish it from the RB concept in the traditional LTE system, the NR system newly defines the concept of "numerology" (reference value), which mainly includes subcarrier spacing, CP length and TTI length. Currently, the NR system defines three service types, namely eMBB, URLLC, and mMTC. The "numerology" types of different service types may also be different, meaning that different types of subcarrier spacing, CP length, or TTI length may be different. Illustratively, it can be defined that next generation mobile communications will support a single carrier bandwidth of up to 100 MHz. The size of one resource block RB in the frequency domain becomes 900 KHz (ie, 12 75 KHz subcarrier intervals), and 0.1 ms is supported in the time domain. The length of one radio frame is 10 ms, but consists of 50 subframes, each of which has a length of 0.2 ms. It should be noted that the signal type applicable to the NR service described in this document may refer to a configuration including at least one of related parameters such as a carrier interval, a CP length, and a TTI length.

The embodiments of the present invention can be applied to an LAA system that uses unlicensed spectrum resources (such as a spectrum of 5 GHz) with the aid of the spectrum of a Long Term Evolution (LTE) system. It should be noted that the description of a specific network architecture in the following embodiments of the present invention is only an example (for example, LTE/LTE-A), and should not be construed as limiting. The method and apparatus disclosed by the present invention are equally applicable to a network architecture of a subsequent evolution (e.g., next generation 5G).

The embodiment of the invention discloses a control information transmission method, device and communication system, which can improve system performance. The details are described below separately.

For a better understanding of the embodiments of the present invention, a schematic diagram of a network architecture of a communication system disclosed in the embodiments of the present invention is first described below.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present invention. As shown in FIG. 1, the communication system includes a base station and a terminal. The base station, that is, the public mobile communication base station, is a form of a radio station, and refers to a radio transceiver station that performs information transmission between the terminal and the terminal through a mobile communication switching center in a certain radio coverage area. Throughout this article The base station may have different functions and corresponding network configurations in different network scenarios, which is not limited by the present invention. For example, in some network scenarios, the base station may mainly include a base transceiver station BTS and a base station controller BSC, and in other network scenarios, the base station may also be referred to as NODE B or Evolved Node B. The base station referred to throughout this document may also be The distributed base station BBU or the macro base station RRU is not limited by the present invention. Terminals may include, but are not limited to, smart phones, notebook computers, personal computers (PCs), personal digital assistants (PDAs), mobile Internet devices (MIDs), smart wearable devices (such as smart watches). , smart bracelets and other types of terminals. In addition, it will be understood by those skilled in the art that although only one terminal is shown in FIG. 1, it does not constitute a limitation of the embodiment of the present invention, and may include more terminals than illustrated.

In order to introduce more spectrum resources to meet the ever-increasing network performance requirements, starting from 3GPP Release 13, the LAA (Licensed-Assisted Access to Unlicensed Spectrum) system is introduced to assist in the licensed spectrum (for example, the spectrum of the LTE system). Use unlicensed spectrum resources (such as 5 GHz spectrum). In the LAA system, due to the introduction of unlicensed spectrum resources, the LAA system needs to follow the existing mechanisms of the unlicensed spectrum on the basis of the LTE system. At present, countries have separately stipulated the use of unlicensed spectrum. Some countries and regions have specified the use of LBT (listen before talk) mechanism in the unlicensed frequency band, that is, the mechanism of listening and speaking before, before sending data, Whether the state of the listening channel is idle, and if the channel is idle, the data information and the control information are transmitted, otherwise the transmission is not performed.

The process of channel monitoring is also called Clear Channel Assessment (referred to as CCA). Exemplarily, assuming that a base station measures the power of the channel not below -62 dBm, the station considers the channel to be busy; below -62 dBm, the station considers the channel to be idle.

As an exemplary way of monitoring whether the state of the channel is idle, specifically, the UE detects whether other devices are transmitting data on the target channel. If the target channel is occupied by other devices, the device may continue to listen when the next listening period comes, or may not listen according to the indication; if the channel resource is idle, the UE may immediately occupy the target channel. The channel occupation time is a fixed value, which is the time length of the last symbol of the uplink subframe configured by the SRS configuration information. Considering that the UE reports the channel detection conversion process on the SRS, it can be detected in the next channel. Set a quiet time before the position. Preferably, if the channel resource is idle, a random number L may be generated as the backoff time, and the target channel is continuously monitored during the backoff time. If the target channel is detected to be in the idle state, the backoff time ends and the UE is at the same time. The target channel can be occupied for SRS reporting. If the UE detects that the channel state is non-idle (e.g., has been occupied by other UEs), then the device cannot occupy the channel during this period, then the UE can wait until the fixed position of the next cycle to continue detecting.

As another exemplary manner of whether the state of the listening channel is idle, specifically, when the UE needs to report the SRS, the initial detection is triggered. If the UE initially detects that the target channel is in an idle state, the target channel can be occupied, and the channel occupancy time T is pre-configured by the base station; if the UE initially detects that the target channel state is not idle, a delay period can be generated (defer period) Time, if a target channel is detected to be busy during the deferred cycle time, then a deferred cycle time continues to be generated. The UE may occupy the target channel after detecting that the channel state is idle after the L times detection time, and occupy the target channel time as T.

The scheduling modes supported by the LAA system are classified into self-scheduling and cross-carrier scheduling. In the LAA system, due to frequent changes in the LBT results, cross-carrier scheduling should be used as much as possible to improve the scheduling success rate when the LBT fails. When the LBT succeeds, self-scheduling needs to be adopted as much as possible to avoid excessive signaling overhead. However, whether the terminal supports cross-carrier scheduling is configured through the ConnectionReconfiguration field of Radio Resource Control (RRC) signaling, and the flexibility of the semi-static configuration is not strong due to the long update time of the RRC signaling. , causing system performance to decline.

The communication system shown in FIG. 1 supports dynamic conversion of the scheduling mode, and the communication system shown in FIG. 1 is an LAA system. The base station may determine, according to a preset rule, a scheduling manner for performing uplink data scheduling for the terminal, where the scheduling manner includes self-scheduling or cross-carrier scheduling. Further, the base station may send, to the terminal, control information that is used to indicate the scheduling mode, and further, the base station The scheduling mode is used to perform uplink data scheduling for the terminal on the licensed frequency band. It can be seen that, in the embodiment of the present invention, in the LAA system, the base station can flexibly determine the scheduling mode for the terminal to perform uplink data scheduling according to the preset rule, that is, dynamically convert two different scheduling modes according to different scenarios, regardless of the LBT failure. If it is successful, the base station reasonably selects the scheduling mode, improves the scheduling success rate, avoids excessive signaling overhead, and at the same time reduces the data transmission error rate, thereby improving system performance.

It should be noted that, in the embodiment of the present invention, the two scheduling modes of self-scheduling and cross-carrier scheduling may be converted by using a combination of semi-static configuration and dynamic configuration. For example, when the amount of system data is small, the system does not need to perform frequent scheduling of self-scheduling and cross-carrier scheduling. It can be configured in a static scheduling mode. Conversely, when the system data volume is large, the system needs to perform frequent operations. Scheduling and cross-carrier scheduling switching between two scheduling modes can be configured using dynamic scheduling.

Referring to FIG. 2, FIG. 2 is a schematic flowchart of a control information transmission method according to an embodiment of the present invention. The method is described on both sides of the base station and the terminal, and the method is applied to the LAA system. As shown in FIG. 2, the method can include the following steps.

201. The terminal sends uplink data to the base station according to the first scheduling manner in which the terminal performs uplink scheduling.

The first scheduling mode includes self-scheduling or cross-carrier scheduling.

In the embodiment of the present invention, the scheduling modes supported by the LAA system include self-scheduling and cross-scheduling.

The self-scheduling means that the information carried in the downlink control channel (PDCCH) of the downlink carrier unit (CC) corresponds to the downlink resource allocation or the uplink resource allocation of the same CC. The self-scheduling is to control the uplink data transmission on the carrier in the subframe of the carrier, and the self-scheduling is controlled by sending the control information of the uplink data scheduling to the terminal in the PDCCH of the local cell of the terminal, and the control information may include but not It is limited to resource allocation information, frequency hopping information, modulation and coding mode information, and the like.

Cross-carrier scheduling refers to a resource that allows a PDCCH on one CC to be scheduled to be transmitted on another CC. That is, the PDCCH is transmitted on one CC, and the corresponding PDSCH or Physical Uplink Shared Channel (PUSCH) is transmitted on another CC. Cross-carrier scheduling is the scheduling of multiple frequency band carriers on a carrier of one frequency band. The cross-carrier scheduling is performed by transmitting control information of the uplink data scheduling to the terminal on the PDCCH channel of the scheduling cell of the terminal, where the control information includes resource allocation information, frequency hopping information, modulation and coding mode information, and the like. In addition, The identifier of the scheduling cell may be carried in the control information, and is used to identify which scheduling cell the control information is sent. The present cell can be understood that the base station and the terminal are in the same cell, and the scheduling cell can be understood as the base station and the terminal are in different cells.

Specifically, the manner in which the terminal sends the uplink data to the base station according to the first scheduling mode in which the terminal performs the uplink scheduling is specifically:

When the first scheduling mode is the self-scheduling, sending uplink data to the base station on a physical uplink shared channel PUSCH of the local cell of the terminal; or

When the first scheduling mode is the cross-carrier scheduling, the uplink data is sent to the base station on the physical uplink shared channel PUSCH of the local cell of the terminal.

In this optional implementation manner, the terminal may send uplink data to the base station on the physical uplink shared channel (PUSCH) of the local cell of the terminal, whether the first scheduling mode is self-scheduling or cross-carrier scheduling.

202. The base station determines, as a first scheduling manner, that the terminal currently performs uplink data scheduling.

As an optional implementation manner, after step 202 and before step 203, the method further includes:

Determining whether the amount of data in the system is greater than a preset value;

If yes, execute 203. If no, end this process.

In this optional implementation manner, when the amount of system data is large, the system needs to frequently switch between two scheduling modes, that is, self-scheduling and cross-carrier scheduling, and can be configured by using a dynamic scheduling mode. The system does not need to frequently switch between two scheduling modes: self-scheduling and cross-carrier scheduling. It can be configured in a static scheduling mode.

203. The base station monitors several parameters in the wireless communication network.

Optionally, the base station can monitor the number of failures of the LBT mechanism after the downlink listening first in the unlicensed frequency band;

Optionally, the base station can monitor the received number of uplink data transmission errors.

Optionally, the base station may monitor the status of the LBT mechanism after the downlink listening in the unlicensed frequency band, and whether the uplink data scheduling request sent by the terminal is received.

204. The base station dynamically adjusts according to a result of monitoring a plurality of parameters in the wireless communication network. A scheduling method.

In the embodiment of the present invention, due to the existence of the LBT mechanism in the LAA system, since the LBT result changes very frequently, cross-carrier scheduling should be used as much as possible to improve the scheduling success rate when the LBT fails. When the LBT succeeds, self-scheduling should be adopted as much as possible to avoid Excessive signaling overhead, so dynamic conversion between cross-carrier scheduling and self-scheduling needs to be considered.

As an optional implementation manner, the manner in which the base station dynamically adjusts the first scheduling mode according to the result of monitoring the parameters in the wireless communication network may be specifically:

Monitoring the number of failures of the LBT mechanism after performing the downlink listening in the unlicensed frequency band; if the number of failures of the LBT mechanism exceeds a preset number of thresholds and the first scheduling mode is the self-scheduling, the self is Scheduling switching to the cross-carrier scheduling; or

Monitoring the number of failures of the LBT mechanism after the downlink listening first in the unlicensed frequency band; if the number of failures of the LBT mechanism does not exceed the preset number of times threshold and the first scheduling mode is the cross-carrier scheduling, The cross-carrier scheduling switch is the self-scheduling.

In this optional embodiment, a preset number of thresholds, such as 3, may be preset. The base station can count the number of failures of the LBT mechanism after the downlink listening first in the unlicensed frequency band. If the number of failures of the LBT mechanism exceeds the preset number of times, the number of times the base station cannot perform downlink data transmission in the expected subframe is compared. The success rate of the uplink scheduling of the terminal is low. In this case, in order to improve the success rate of the uplink scheduling of the terminal, the base station can determine that the scheduling mode for the uplink data scheduling of the terminal is cross-carrier scheduling. If the number of failures of the LBT mechanism does not exceed the threshold of the preset number of times, it indicates that the number of times that the base station cannot perform downlink data transmission in the expected subframe is small, and the base station can determine that the scheduling mode for the uplink data scheduling of the terminal is self-scheduling. To avoid excessive signaling overhead.

Monitoring the received uplink data transmission error number; if the uplink data transmission error number exceeds a preset number and the first scheduling mode is the self-scheduling, switching the self-scheduling to the cross-carrier scheduling ;or,

Monitoring the number of received uplink data transmission errors; the number of errors in the uplink data transmission exceeds the pre- When the number is set and the first scheduling mode is the cross-carrier scheduling, the cross-carrier scheduling is switched to the self-scheduling.

In this alternative embodiment, a preset number, such as 5, may be preset. The base station can count the number of received uplink data transmission errors. If the number of received uplink data transmission errors exceeds a preset number, the current uplink channel quality is poor. To reduce the error rate of the uplink data transmission, the base station can determine The scheduling mode for uplink data scheduling for the terminal is cross-carrier scheduling. If the number of received uplink data transmission errors does not exceed the preset number, the current uplink channel quality is good, and the base station may determine that the terminal performs uplink data scheduling. The scheduling mode is self-scheduling.

Monitoring the state of the LBT mechanism after the downlink listening of the unlicensed frequency band cell; if the LBT mechanism fails and receiving the uplink data scheduling request sent by the terminal, the self-scheduling is switched to the cross-carrier scheduling.

In this optional implementation manner, in the case that the LBT mechanism fails after the downlink listening of the unlicensed band cell, regardless of the number of failures of the LBT mechanism, the base station needs to receive the uplink data scheduling request sent by the terminal, as long as the base station receives the uplink data scheduling request sent by the terminal. The scheduling mode for determining the uplink data scheduling for the terminal is the cross-carrier scheduling, so that it is convenient to respond to the uplink data scheduling request sent by the terminal in time, and at the same time, improve the success rate of the scheduling.

205. The base station sends, to the terminal, control information that carries the scheduling mode for indicating the adjustment.

The control information further includes at least one of resource allocation information, frequency modulation information, and modulation and coding mode information.

The base station may send, by using a preset bit (such as 1 bit), control information carrying the indication scheduling mode to the terminal.

As another optional implementation manner, the method for the base station to send, to the terminal, the control information that is used to indicate the adjusted scheduling mode is specifically:

When the first scheduling mode is the self-scheduling, the downlink control channel PDCCH of the local cell of the terminal is sent to the terminal to carry the adjusted scheduling party. Control information; or,

And when the first scheduling mode is the cross-carrier scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on a downlink control channel PDCCH of the scheduling cell of the terminal.

In this optional implementation manner, the base station may send, on the downlink control channel PDCCH of the local cell or the scheduling cell of the terminal, the control carried by the base station to indicate the scheduling mode according to different scheduling modes (self-scheduling or cross-carrier scheduling). information.

206. The base station subsequently adopts an adjusted scheduling manner to perform uplink data scheduling for the terminal.

Specifically, in the case that the adjusted scheduling mode is self-scheduling, the base station may use self-scheduling to allocate uplink transmission resources to the terminal in the licensed frequency band or the unlicensed frequency band to perform uplink data scheduling of the current cell; When the scheduling mode is cross-carrier scheduling, the base station may use cross-carrier scheduling to allocate uplink transmission resources to the terminal in the licensed frequency band to perform uplink data scheduling of the scheduling cell.

207. The terminal subsequently sends uplink data to the base station according to the adjusted scheduling manner.

In the embodiment of the present invention, after the terminal receives the control information that is sent by the receiving base station and carries the adjusted scheduling mode, the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted scheduling mode, and the subsequent terminal may adjust according to the adjustment. The subsequent scheduling mode sends uplink data to the base station. The control information further includes at least one of resource allocation information, frequency modulation information, and modulation and coding mode information.

Specifically, the manner in which the terminal subsequently sends the uplink data to the base station according to the adjusted scheduling manner is specifically:

When the adjusted scheduling mode is self-scheduling, sending uplink data to the base station on the physical uplink shared channel PUSCH of the local cell of the terminal; or

When the adjusted scheduling mode is the cross-carrier scheduling, the uplink data is sent to the base station on the physical uplink shared channel PUSCH of the local cell of the terminal.

As an optional implementation manner, the method further includes:

When the first scheduling mode is the self-scheduling, the terminal performs monitoring of the physical downlink control channel PDCCH in the local cell of the terminal; or

When the first scheduling mode is the cross-carrier scheduling, the terminal performs monitoring of the physical downlink control channel PDCCH in the scheduling cell of the terminal.

In this optional implementation manner, the terminal may determine, according to the first scheduling mode (self-scheduling or cross-carrier scheduling), the location where the physical downlink control channel PDCCH is located (the current cell or the scheduling cell), and further, the local cell or the scheduling of the terminal. The cell performs monitoring of the physical downlink control channel PDCCH.

As another optional implementation manner, the method further includes:

When the adjusted scheduling mode is the self-scheduling, the terminal performs monitoring of the physical downlink control channel PDCCH in the local cell of the terminal; or

When the adjusted scheduling mode is the cross-carrier scheduling, the terminal performs monitoring of the physical downlink control channel PDCCH in the scheduling cell of the terminal.

It can be seen that this method can reduce the range of the terminal monitoring PDCCH, reduce the complexity of the terminal busy monitoring, and reduce the power consumption of the terminal.

As another optional implementation manner, the method further includes:

The terminal sends an uplink data scheduling request to the base station, to trigger the base station to determine the adjusted according to the received uplink data scheduling request and the state of the LBT mechanism that is monitored by the base station in the downlink of the unlicensed frequency band. Scheduling method.

In the method flow described in FIG. 2, in the LAA system, the base station can flexibly adjust the first scheduling mode of the uplink data scheduling currently performed by the terminal according to the result of monitoring the parameters in the wireless communication network, that is, according to different methods. The scenario dynamically converts two different scheduling modes. Regardless of whether the LBT fails or succeeds, the base station reasonably selects the scheduling mode, improves the scheduling success rate, avoids excessive signaling overhead, and reduces the data transmission error rate, thereby improving system performance.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station may be used to perform some or all of the steps in the method shown in FIG. 2. For details, refer to the description in FIG. I will not repeat them here. As shown in FIG. 3, the base station 300 can include:

The determining unit 301 is configured to determine a first scheduling manner for the terminal to perform uplink data scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling.

The monitoring unit 302 is configured to monitor several parameters in the wireless communication network;

The adjusting unit 303 is configured to dynamically adjust the first scheduling mode according to the result of monitoring the parameters in the wireless communication network;

The sending unit 304 is configured to send, to the terminal, control information that is used to indicate the adjusted scheduling mode.

The executing unit 305 is configured to perform uplink data scheduling for the terminal by using the adjusted scheduling mode.

Optionally, the manner in which the adjusting unit 303 dynamically adjusts the first scheduling mode according to the result of monitoring the parameters in the wireless communication network is specifically:

Monitoring the received number of uplink data transmission errors; if the number of uplink data transmission errors exceeds a preset number and the first scheduling mode is the cross-carrier scheduling, switching the cross-carrier scheduling to the self Scheduling.

Optionally, the sending unit 304 sends, to the terminal, a control information that is used to indicate the adjusted scheduling mode, specifically:

When the first scheduling mode is the self-scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on the downlink control channel PDCCH of the local cell of the terminal; or ,

Optionally, the base station 300 shown in FIG. 3 may further include:

The determining unit 306 is configured to determine, after the determining unit 301 determines that the terminal currently performs uplink data scheduling, whether the amount of data in the system is greater than a preset value;

The monitoring unit 302 is specifically configured to monitor, when the determining unit 306 determines that the amount of data in the system is greater than the preset value, to monitor several parameters in the wireless communication network.

In the base station 300 described in FIG. 3, in the LAA system, the base station can flexibly adjust the first scheduling mode of the uplink data scheduling currently performed by the terminal according to the result of monitoring the parameters in the wireless communication network, that is, according to different The scenario dynamically converts two different scheduling modes. Regardless of whether the LBT fails or succeeds, the base station reasonably selects the scheduling mode, improves the scheduling success rate, avoids excessive signaling overhead, and reduces the data transmission error rate, thereby improving system performance.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal may be used to perform some or all of the steps in the method shown in FIG. 2. For details, refer to the description in FIG. I will not repeat them here. As shown in FIG. 4, the terminal 400 can include:

The first sending unit 401 is configured to send uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling;

The receiving unit 402 is configured to receive control information that is sent by the base station and that carries the adjusted scheduling mode, where the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted Degree mode

The second sending unit 403 is configured to send uplink data to the base station according to the adjusted scheduling manner.

Optionally, the manner in which the first sending unit 401 sends uplink data to the base station according to the first scheduling manner in which the terminal performs uplink scheduling is specifically:

Optionally, the terminal 400 shown in FIG. 4 may further include a listening unit 404.

The monitoring unit 404 is configured to perform monitoring of a physical downlink control channel PDCCH in the local cell of the terminal when the first scheduling mode is the self-scheduling; or

The monitoring unit 404 is further configured to: when the first scheduling mode is the cross-carrier scheduling, perform monitoring of a physical downlink control channel PDCCH in a scheduling cell of the terminal.

Optionally, the terminal 400 shown in FIG. 4 may further include

The third sending unit 405 is configured to send an uplink data scheduling request to the base station, to trigger the base station to say according to the received uplink data scheduling request and the downlink listening in the unlicensed frequency band monitored by the base station. The state of the LBT mechanism determines the adjusted scheduling mode.

In the terminal 400 described in FIG. 4, the location of the physical downlink control channel PDCCH (the current cell or the scheduling cell) may be determined according to the adjusted scheduling manner (self-scheduling or cross-carrier scheduling) indicated in the received control information. In addition, the physical downlink control channel PDCCH is monitored in the local cell or the scheduling cell of the terminal, which can reduce the range in which the terminal monitors the PDCCH, reduce the complexity of the busy monitoring of the terminal, and reduce the power consumption of the terminal.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of another base station according to an embodiment of the present invention, where the base station may be used to perform some or all of the steps in the method shown in FIG. The description is not repeated here. As shown in FIG. 5, the base station 500 can include a processor 501, a transmitter 502, and a memory 503. The structure of the base station shown in FIG. 5 does not constitute a limitation of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may include more or less components than those shown in FIG. 5, or a combination thereof. Some components, or different component arrangements.

The processor 501 is a control center of the base station, and connects various parts of the entire base station by using various interfaces and lines, by running or executing programs and/or modules stored in the memory 503, and calling data stored in the memory 503. To perform various functions and processing data of the base station. The processor 501 may be composed of an integrated circuit (IC), for example, may be composed of a single packaged IC, or may be composed of a plurality of packaged ICs that have the same function or different functions. For example, the processor 501 may include only a central processing unit (CPU), or may be a CPU, a digital signal processor (DSP), or a graphics processing unit (GPU). And a combination of various control chips. In the embodiment of the present invention, the CPU may be a single operation core, and may also include multiple operation cores.

The memory 503 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. The memory 503 can also optionally be at least one storage device located remotely from the processor 501.

Specifically, the processor 501 is configured to invoke a program stored in the memory 503, and perform the following operations:

Monitoring several parameters in a wireless communication network;

Dynamically adjusting the first scheduling mode according to the result of monitoring the parameters in the wireless communication network;

Transmitting, by the transmitter 502, the control information carrying the adjusted scheduling manner to the terminal

Optionally, the processor 501 dynamically adjusts the first scheduling manner according to the result of monitoring the parameters in the wireless communication network, including:

Monitoring the number of failures of the LBT mechanism after the downlink listening first in the unlicensed band; in the LBT If the number of failures of the mechanism exceeds a preset number of thresholds and the first scheduling mode is the self-scheduling, the self-scheduling is switched to the cross-carrier scheduling; or

Optionally, the sending, by the processor 501, the control information that is sent by the transmitter 502 to the terminal and that is used to indicate the adjusted scheduling manner includes:

The control information further includes resource allocation information, frequency modulation information, and modulation and coding mode. At least one of the information.

Optionally, the processor 501 is further configured to: after determining that the terminal is currently performing the uplink scheduling of the uplink data scheduling, invoke the program stored in the memory 503, and perform the following operations:

If yes, performing the following steps: monitoring a number of parameters in the wireless communication network, dynamically adjusting the first scheduling mode according to the result of monitoring the plurality of parameters in the wireless communication network; and transmitting, by the transmitter 502 Sending, to the terminal, control information, which is used to indicate the adjusted scheduling mode, and subsequently adopting the adjusted scheduling mode to perform uplink data scheduling for the terminal.

In the base station 500 described in FIG. 5, in the LAA system, the base station can flexibly adjust the first scheduling mode of the uplink data scheduling currently performed by the terminal according to the result of monitoring the parameters in the wireless communication network, that is, according to different The scenario dynamically converts two different scheduling modes. Regardless of whether the LBT fails or succeeds, the base station reasonably selects the scheduling mode, improves the scheduling success rate, avoids excessive signaling overhead, and reduces the data transmission error rate, thereby improving system performance.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of another terminal according to an embodiment of the present invention. The terminal shown in FIG. 6 is used to perform some or all of the steps in the method shown in FIG. The description in the description will not be repeated here. As shown in FIG. 6, the terminal 600 can include a processor 601, a receiver 602, a transmitter 602, and a memory 604. The structure of the terminal shown in FIG. 6 does not constitute a limitation of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may include more or less components than those shown in FIG. 6, or a combination thereof. Some components, or different component arrangements. In the embodiment of the present invention, the terminal may include, but is not limited to, a smart phone, a notebook computer, a personal computer (PC), a personal digital assistant (PDA), and a mobile internet device (Mobile Internet Device). , MID), smart wearable devices (such as smart watches, smart bracelets) and other terminals.

Wherein, the processor 601 is a control center of the terminal, and connects various parts of the entire terminal by using various interfaces and lines, by running or executing programs and/or modules stored in the memory 604, and calling data stored in the memory 604, To perform various functions of the terminal and process data. deal with The 601 may be composed of an integrated circuit (IC), for example, may be composed of a single packaged IC, or may be composed of a plurality of packaged ICs having the same function or different functions. For example, the processor 601 may include only a central processing unit (CPU), or may be a CPU, a digital signal processor (DSP), or a graphics processing unit (GPU). And a combination of various control chips. In the embodiment of the present invention, the CPU may be a single operation core, and may also include multiple operation cores.

The memory 604 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. The memory 604 can optionally also be at least one storage device located remotely from the aforementioned processor 601.

Specifically, the processor 601 is configured to invoke a program stored in the memory 604, and perform the following operations:

And transmitting, by the transmitter 603, uplink data to the base station according to the first scheduling mode in which the terminal is currently performing uplink scheduling, where the first scheduling mode includes self-scheduling or cross-carrier scheduling;

Receiving, by the receiver 602, control information that is sent by the base station and that carries the adjusted scheduling mode, where the control information is used to indicate that the terminal switches the first scheduling mode to the adjusted scheduling mode;

The uplink data is sent to the base station by the transmitter 603 according to the adjusted scheduling manner.

Optionally, the sending, by the processor 601, the uplink data by using the transmitter 603 to the base station according to the first scheduling mode in which the terminal is currently performing uplink scheduling includes:

Optionally, the processor 601 is further configured to invoke a program stored in the memory 604, and perform the following operations:

When the first scheduling mode is the self-scheduling, the physical downlink control channel PDCCH is monitored in the local cell of the terminal; or

When the first scheduling mode is the cross-carrier scheduling, the scheduling of the physical downlink control channel PDCCH is performed on the scheduling cell of the terminal.

Sending, by the sender 603, an uplink data scheduling request to the base station, to trigger the base station to perform an LBT mechanism according to the received uplink data scheduling request and the downlink listening first in the unlicensed frequency band monitored by the base station. The state of the adjustment determines the adjusted scheduling mode.

In the terminal 600 described in FIG. 6, the location of the physical downlink control channel PDCCH (the current cell or the scheduling cell) may be determined according to the adjusted scheduling manner (self-scheduling or cross-carrier scheduling) indicated in the received control information. In addition, the physical downlink control channel PDCCH is monitored in the local cell or the scheduling cell of the terminal, which can reduce the range in which the terminal monitors the PDCCH, reduce the complexity of the busy monitoring of the terminal, and reduce the power consumption of the terminal.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a communication system according to an embodiment of the present invention. The communication system 700 can include a base station 701 and a terminal 702, which can be the base station described in FIG. 3 and FIG. 5, and the terminal 702 can be the terminal described in FIG. 4 or FIG. The base station 701 can be used to perform the method described in FIG. 2. For details, refer to the related description, and the terminal 702 can be used to perform the method described in FIG. 2, and the specific process is not described here. Narration.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the 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 standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing memory includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable memory, and the memory can include: a flash drive , read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), Disk or disc, etc.

The embodiments of the present invention have been described in detail above, and the principles and implementations of the present invention are described in detail herein. The description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; The present invention is not limited by the scope of the present invention, and the present invention is not limited by the scope of the present invention.

Claims

A control information transmission method is applied to a base station, and is characterized in that:

Determining a first scheduling mode for the terminal to perform uplink data scheduling, where the first scheduling mode includes self-scheduling or cross-carrier scheduling;

Monitoring several parameters in a wireless communication network;

Dynamically adjusting the first scheduling mode according to the result of monitoring the parameters in the wireless communication network;

Transmitting to the terminal, carrying control information for indicating the adjusted scheduling manner;

The uplink scheduling is performed for the terminal by using the adjusted scheduling mode.
The method according to claim 1, wherein the dynamically adjusting the first scheduling manner according to the result of monitoring the plurality of parameters in the wireless communication network comprises:

Monitoring the number of failures of the LBT mechanism after performing the downlink listening in the unlicensed frequency band; if the number of failures of the LBT mechanism exceeds a preset number of thresholds and the first scheduling mode is the self-scheduling, the self is Scheduling switching to the cross-carrier scheduling; or

Monitoring the number of failures of the LBT mechanism after the downlink listening first in the unlicensed frequency band; if the number of failures of the LBT mechanism does not exceed the preset number of times threshold and the first scheduling mode is the cross-carrier scheduling, The cross-carrier scheduling switch is the self-scheduling.
The method according to claim 1, wherein the dynamically adjusting the first scheduling manner according to the result of monitoring the plurality of parameters in the wireless communication network comprises:

Monitoring the received uplink data transmission error number; if the uplink data transmission error number exceeds a preset number and the first scheduling mode is the self-scheduling, switching the self-scheduling to the cross-carrier scheduling ;or,

Monitoring the received number of uplink data transmission errors; if the number of uplink data transmission errors exceeds a preset number and the first scheduling mode is the cross-carrier scheduling, switching the cross-carrier scheduling to the self Scheduling.
The method according to claim 1, wherein the first scheduling mode is the self-scheduling, and the first scheduling mode is dynamically adjusted according to the result of monitoring the parameters in the wireless communication network. Includes:

Monitoring the state of the LBT mechanism after the downlink listening of the unlicensed frequency band cell; if the LBT mechanism fails and receiving the uplink data scheduling request sent by the terminal, the self-scheduling is switched to the cross-carrier scheduling.
The method according to any one of claims 1 to 4, wherein the sending, to the terminal, the control information that is used to indicate the adjusted scheduling mode includes:

When the first scheduling mode is the self-scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on the downlink control channel PDCCH of the local cell of the terminal; or ,

And when the first scheduling mode is the cross-carrier scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on a downlink control channel PDCCH of the scheduling cell of the terminal.
The method according to any one of claims 1 to 4, wherein after the determining that the terminal is currently performing the first scheduling mode of the uplink data scheduling, the method further includes:

Determining whether the amount of data in the system is greater than a preset value;

If yes, performing the following steps: monitoring a number of parameters in the wireless communication network, dynamically adjusting the first scheduling mode according to the result of monitoring the parameters in the wireless communication network; sending the carrying to the terminal There is control information for indicating the adjusted scheduling mode; and the adjusted scheduling mode is used to perform uplink data scheduling for the terminal.
A control information transmission method is applied to a terminal, and is characterized in that:

And transmitting uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling;

Receiving, by the base station, control information that carries the adjusted scheduling mode, where the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted scheduling mode;

The uplink data is sent to the base station according to the adjusted scheduling manner.
The method according to claim 7, wherein the transmitting the uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling includes:

In the case that the first scheduling mode is the self-scheduling, the content of the local cell in the terminal And transmitting uplink data to the base station on the uplink shared channel PUSCH; or

When the first scheduling mode is the cross-carrier scheduling, the uplink data is sent to the base station on the physical uplink shared channel PUSCH of the local cell of the terminal.
The method according to claim 7 or 8, wherein the method further comprises:

When the first scheduling mode is the self-scheduling, the physical downlink control channel PDCCH is monitored in the local cell of the terminal; or

When the first scheduling mode is the cross-carrier scheduling, the scheduling of the physical downlink control channel PDCCH is performed on the scheduling cell of the terminal.
The method according to claim 7 or 8, wherein the method further comprises:

Sending an uplink data scheduling request to the base station, to trigger the base station to determine the adjustment according to the received uplink data scheduling request and the state of the LBT mechanism after the downlink listening first in the unlicensed frequency band cell monitored by the base station After the scheduling method.
A base station, comprising:

a determining unit, configured to determine a first scheduling mode for performing uplink data scheduling for the terminal, where the first scheduling mode includes self-scheduling or cross-carrier scheduling;

a monitoring unit, configured to monitor several parameters in the wireless communication network;

An adjusting unit, configured to dynamically adjust the first scheduling mode according to the result of monitoring the parameters in the wireless communication network;

a sending unit, configured to send, to the terminal, control information that is used to indicate the adjusted scheduling manner;

An execution unit is configured to perform uplink data scheduling for the terminal by using the adjusted scheduling manner.
The base station according to claim 11, wherein the manner in which the adjusting unit dynamically adjusts the first scheduling mode according to the result of monitoring the parameters in the wireless communication network is specifically:

Monitoring the number of failures of the LBT mechanism after performing the downlink listening in the unlicensed frequency band; if the number of failures of the LBT mechanism exceeds a preset number of thresholds and the first scheduling mode is the self-scheduling, the self is Scheduling switching to the cross-carrier scheduling; or

Monitoring the number of failures of the LBT mechanism after the downlink listening first in the unlicensed frequency band; if the number of failures of the LBT mechanism does not exceed the preset number of times threshold and the first scheduling mode is the cross-carrier scheduling, The cross-carrier scheduling switch is the self-scheduling.
The base station according to claim 11, wherein the manner in which the adjusting unit dynamically adjusts the first scheduling mode according to the result of monitoring the parameters in the wireless communication network is specifically:

Monitoring the received uplink data transmission error number; if the uplink data transmission error number exceeds a preset number and the first scheduling mode is the self-scheduling, switching the self-scheduling to the cross-carrier scheduling ;or,

Monitoring the received number of uplink data transmission errors; if the number of uplink data transmission errors exceeds a preset number and the first scheduling mode is the cross-carrier scheduling, switching the cross-carrier scheduling to the self Scheduling.
The base station according to claim 11, wherein the first scheduling mode is the self-scheduling, and the adjusting unit dynamically adjusts the first according to a result of monitoring the parameters in the wireless communication network. The way of scheduling is as follows:

Monitoring the state of the LBT mechanism after the downlink listening of the unlicensed frequency band cell; if the LBT mechanism fails and receiving the uplink data scheduling request sent by the terminal, the self-scheduling is switched to the cross-carrier scheduling.
The base station according to any one of claims 11 to 14, wherein the sending unit sends the control information carrying the control information for indicating the adjusted scheduling manner to the terminal, specifically:

When the first scheduling mode is the self-scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on the downlink control channel PDCCH of the local cell of the terminal; or ,

And when the first scheduling mode is the cross-carrier scheduling, the control information that is used to indicate the adjusted scheduling mode is sent to the terminal on a downlink control channel PDCCH of the scheduling cell of the terminal.
The base station according to any one of claims 11 to 14, wherein the base station further comprises:

a determining unit, configured to determine, after the determining unit determines that the terminal currently performs uplink data scheduling, whether the amount of data in the system is greater than a preset value;

The monitoring unit is specifically configured to monitor, when the determining unit determines that the amount of data in the system is greater than the preset value, to monitor certain parameters in the wireless communication network.
A terminal, comprising:

The first sending unit is configured to send uplink data to the base station according to the first scheduling manner in which the terminal currently performs uplink scheduling, where the first scheduling manner includes self-scheduling or cross-carrier scheduling;

a receiving unit, configured to receive, by the base station, control information that carries the adjusted scheduling mode, where the control information is used to instruct the terminal to switch the first scheduling mode to the adjusted scheduling mode;

The second sending unit is configured to send uplink data to the base station according to the adjusted scheduling manner.
The terminal according to claim 17, wherein the manner in which the first sending unit sends uplink data to the base station according to the first scheduling mode in which the terminal currently performs uplink scheduling is specifically:

When the first scheduling mode is the self-scheduling, sending uplink data to the base station on a physical uplink shared channel PUSCH of the local cell of the terminal; or

When the first scheduling mode is the cross-carrier scheduling, the uplink data is sent to the base station on the physical uplink shared channel PUSCH of the local cell of the terminal.
The terminal according to claim 17 or 18, wherein the terminal further comprises a monitoring unit.

The monitoring unit is configured to perform monitoring of a physical downlink control channel PDCCH in a local cell of the terminal when the first scheduling mode is the self-scheduling; or

The monitoring unit is further configured to perform monitoring of a physical downlink control channel PDCCH in a scheduling cell of the terminal, where the first scheduling mode is the cross-carrier scheduling.
The terminal according to claim 17 or 18, wherein the terminal further comprises:

a third sending unit, configured to send an uplink data scheduling request to the base station, to trigger the base station to say the LBT according to the received uplink data scheduling request and the downlink listening first in the unlicensed frequency band monitored by the base station The state of the mechanism determines the adjusted scheduling mode.
A communication system comprising the base station according to any one of claims 11 to 16 and the terminal according to any one of claims 17 to 20.