CN111031610B

CN111031610B - Method for transmitting information and user equipment

Info

Publication number: CN111031610B
Application number: CN201911107240.0A
Authority: CN
Inventors: 叶朝岭
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2024-01-05
Anticipated expiration: 2036-09-26
Also published as: CN106488577B; CN106488577A; CN111031610A

Abstract

The embodiment of the invention discloses a method for transmitting information and user equipment, wherein the method comprises the following steps: receiving N pieces of uplink authorization information sent by a base station in a first transmission time interval; and the data transmission of the carrier units corresponding to the (N-1) uplink grant information in the N uplink grant information is scheduled preferentially, and the MAC control information transmission of the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information in the N uplink grant information is scheduled finally based on the data transmission scheduled preferentially. The method and the user equipment provided by the embodiment of the invention can reduce the complexity of uplink transmission of the UE.

Description

Method for transmitting information and user equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method for transmitting information and a user equipment.

Background

Long term evolution (Long Term Evolution, LTE) is an evolution of the third generation (3th Generation,3G) mobile communication technology that improves and enhances the 3G over-the-air access technology, can provide higher peak rates, can provide downlink 150Mbps and uplink 50Mbps peak rates at 20MHz spectrum bandwidth, and provides better user experience. The long term evolution technology upgrade (Long Term Evolution-Advanced) is an evolution version of LTE, is compatible with LTE, and adopts carrier aggregation (Carrier Aggregation, CA), uplink/downlink multi-antenna enhancement (E-UL/DL MIMO) and other technologies, wherein the peak rate can reach 1Gbps in the downlink and 500Mbps in the Uplink at maximum.

CA is the aggregation of 2 or more carrier elements (Component Carrier, CCs) to support a larger transmission bandwidth, LTE protocol specifies that a maximum of 5 CCs can be supported, each CC supporting a maximum of 20MHz bandwidth, and a maximum of 100MHz bandwidth.

When a User Equipment (UE) supports uplink CA, the UE may perform uplink transmission on multiple CCs at the same time, so that the UE may decode multiple uplink grant messages in one subframe, how to transmit uplink data according to the decoded multiple uplink grant messages and transmit media access control (Medium Access Control, MAC) control information according to which uplink grant message, and there is no technical scheme that can be referred currently, and there is a possibility that complexity of uplink transmission of the UE may increase.

Disclosure of Invention

In view of this, the embodiments of the present invention provide a method for transmitting information and a user equipment, which can reduce the complexity of uplink transmission performed by a UE.

In a first aspect, there is provided a method of transmitting information, the method comprising: receiving N pieces of uplink authorization information sent by a base station in a first transmission time interval, wherein the ith uplink authorization information in the N pieces of uplink authorization information is used for indicating user equipment to send new data to the base station through a carrier unit corresponding to the ith uplink authorization information; transmitting new data to the base station through carrier units corresponding to (N-1) uplink grant information in the N uplink grant information respectively in a second transmission time interval, and transmitting Media Access Control (MAC) control information to the base station through carrier units corresponding to uplink grant information except for the (N-1) uplink grant information in the N uplink grant information in the second transmission time interval, wherein N, i is a positive integer, N is more than or equal to 2, i is less than or equal to N, and the second transmission time interval is later than the first transmission time interval; when the transmission of the carrier units corresponding to the N uplink grant information is scheduled, the user equipment preferentially schedules the data transmission of the carrier units corresponding to the (N-1) uplink grant information, and finally schedules the MAC control information transmission of the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information based on the preferentially scheduled data transmission.

And finally, the MAC control information of the carrier unit corresponding to the uplink authorization information except the (N-1) uplink authorization information is scheduled to be sent, so that the condition that all the scheduled states are estimated can be avoided, and the complexity of uplink sending of the user equipment is effectively reduced.

Alternatively, the first transmission time interval and/or the second transmission time interval may be a subframe, an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) OFDM symbol, etc., or may be a transmission time unit in a future wireless communication system.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information are primary carrier units, and the carrier units corresponding to the (N-1) uplink grant information are secondary carrier units.

And the MAC control information is sent to the base station through the main carrier unit, so that the state synchronism between the user equipment and the base station can be improved.

Alternatively, the signaling radio bearer SRB data may also be sent to the base station via the primary carrier element. The state synchronicity between the user equipment and the base station can be further improved.

With reference to the first aspect or any implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the MAC control information includes: at least one of a buffer status report BSR or a power headroom report PHR.

And finally, scheduling the BSR or PHR of the carrier unit corresponding to the uplink authorization information except the (N-1) uplink authorization information, so that the need of estimating the current UE buffer data amount or uplink transmission power margin after all scheduling is completed when the BSR or PHR is transmitted can be avoided, and the complexity of uplink transmission of the user equipment is effectively reduced.

Optionally, at least one of the BSR or PHR is obtained based on data transmission of the carrier unit corresponding to the (N-1) uplink grant information.

With reference to the first aspect or any implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the method further includes: and when the carrier unit corresponding to at least one uplink grant message in the N uplink grant messages is determined to have the remaining uplink resources, transmitting Padding BSR to the base station through the remaining uplink resources.

With reference to the first aspect or any implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, any one of the N pieces of uplink grant information includes an index for identifying a carrier unit corresponding to the any one of the N pieces of uplink grant information.

Optionally, the scheduling of the carrier units corresponding to the N uplink grant information is prioritized according to the size of the index number in the uplink grant information, which is easy to implement.

Optionally, each logical channel is scheduled to buffer data according to the priority of the logical channel.

In a second aspect, a user equipment is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the user equipment comprises means for performing the method of the first aspect or any possible implementation of the first aspect.

In a third aspect, there is provided a user equipment comprising: memory, processor, transceiver, communication interface, and bus system. The memory is used for storing instructions, the processor is used for executing the instructions stored in the memory, when the instructions are executed, the processor executes the method of the first aspect through the communication interface, controls the transceiver to receive input data and information, and outputs data such as operation results.

In a fourth aspect, a computer storage medium is provided for storing computer software instructions for use in the method described above, comprising a program designed to perform the first aspect described above.

These and other aspects of embodiments of the invention will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

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

Fig. 2 is a schematic diagram of LTE-FDD air interface timing.

Fig. 3 is a schematic block diagram of a method of transmitting information according to an embodiment of the present invention.

Fig. 4 is a schematic flow chart of a user equipment for transmitting information according to an embodiment of the present invention.

Fig. 5 is another schematic flow chart of a user equipment for transmitting information according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be understood that the technical solution of the embodiment of the present invention may be applied to various communication systems, for example: global mobile communications (Global System of Mobile communication, abbreviated as "GSM") system, code division multiple access (Code Division Multiple Access, abbreviated as "CDMA") system, wideband code division multiple access (Wideband Code Division Multiple Access, abbreviated as "WCDMA") system, general packet radio service (General Packet Radio Service, abbreviated as "GPRS"), long term evolution (Long Term Evolution, abbreviated as "LTE") system, LTE frequency division duplex (Frequency Division Duplex, abbreviated as "FDD") system, LTE time division duplex (Time Division Duplex, abbreviated as "TDD"), universal mobile telecommunications system (Universal Mobile Telecommunication System, abbreviated as "UMTS"), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, abbreviated as "WiMAX") communication system, or future 5G system, and the like.

In particular, the technical solution of the embodiment of the present invention may be applied to various communication systems based on non-orthogonal multiple access technologies, such as a sparse code multiple access (Sparse Code Multiple Access, abbreviated as "SCMA") system, a low density signature (Low Density Signature, abbreviated as "LDS") system, etc., where, of course, SCMA systems and LDS systems may also be referred to by other names in the communication field; further, the technical solution of the embodiment of the present invention may be applied to a multi-Carrier transmission system using a non-orthogonal multiple access technology, for example, an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, abbreviated as "OFDM"), a filter bank multi-Carrier (Filter Bank Multi-Carrier, abbreviated as "FBMC"), a general frequency division multiplexing (Generalized Frequency Division Multiplexing, abbreviated as "GFDM"), a Filtered orthogonal frequency division multiplexing (Filtered-OFDM, abbreviated as "F-OFDM") system, and the like.

It should also be appreciated that in embodiments of the present invention, a terminal device, which may be referred to as an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment, may communicate with one or more core networks via a radio access network (Radio Access Network, abbreviated "RAN"). An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, abbreviated as "SIP") phone, a wireless local loop (Wireless Local Loop, abbreviated as "WLL") station, a personal digital assistant (Personal Digital Assistant, abbreviated as "PDA"), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a terminal device in a future 5G network.

It should also be appreciated that in an embodiment of the present invention, a network device may be used to communicate with a terminal device, which may be a base station (Base Transceiver Station, abbreviated as "BTS") in a global system for mobile communications (Global System of Mobile communication, abbreviated as "GSM") or code division multiple access (Code Division Multiple Access, abbreviated as "CDMA"), a base station (NodeB, abbreviated as "NB") in a wideband code division multiple access (Wideband Code Division Multiple Access, abbreviated as "WCDMA") system, an evolved base station (Evolutional Node B, abbreviated as "eNB" or "eNodeB") in a long term evolution (Long Term Evolution, abbreviated as "LTE") system, or a base station device in a relay station, access point, vehicle device, wearable device, future 5G (5 th-Generation) network, or the like.

Fig. 1 shows a schematic architecture diagram of a communication system to which an embodiment of the invention is applied. As shown in fig. 1, the communication system 100 may include a network device 102, where the network device 102 may include one or more antenna groups, each of which may include one or more antennas. For example, one antenna group may include antennas 104 and 106, another antenna group may include antennas 108 and 110, and an additional group may include antennas 112 and 114. Although 2 antennas are shown in fig. 1 for each antenna group, it should be appreciated that there may be more or fewer antennas for each antenna group. Network device 102 may additionally include a transmitter chain and a receiver chain, each of which may include a number of components (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art.

In general, the UE schedules uplink data to the eNB based on the uplink grant, that is, the eNB controls the UE to uplink transmission by the uplink grant (the uplink grant information includes information such as an allocation air interface resource size, a new retransmission instruction, a transmission time, etc.), and in the existing protocol, the uplink transmission timing is explicitly defined. Taking LTE-FDD air interface timing sequence as an example, as shown in fig. 2, the eNB issues uplink grant in n subframes, the UE starts to schedule preparation data after the n subframes are released from the uplink grant, starts to transmit in n+4 subframes, and detects UE transmission data in n+4 subframes and checks, and feeds back the check result to the UE in n+8 subframes.

After receiving the uplink grant for indicating transmission of new uplink data, the UE schedules each logical channel according to the logical priority, and finally generates a MAC protocol data unit (Protocol Data Unit, PDU) and sends the MAC protocol data unit to the physical layer, and the MAC protocol data unit is processed by the physical layer and then sent to the eNB. In order to ensure that data can be correctly sent in the wireless link, hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) and automatic repeat request (Automatic Repeat reQuest, ARQ) mechanisms are introduced at the MAC and RLC layers, respectively, and retransmission can be performed when an error occurs. In other words, the uplink grant received by the UE may include an uplink grant for transmitting new data and an uplink grant for retransmitting data, and it should be understood that the uplink grant referred to in the embodiment of the present invention refers to the uplink grant for transmitting new data if there is no special case.

In order to provide better user experience, so that the downlink peak speed of 1Gbps and the uplink peak speed of 500Mbps can be met, the better user experience is provided, the maximum transmission bandwidth of 100MHz needs to be provided, but because of the scarcity of continuous spectrums with such large bandwidth, spectrum resources owned by many operators are often discontinuous, each single frequency band is difficult to meet the requirement of users on the bandwidth, carrier aggregation (Carrier Aggregation, CA) technology is proposed, and larger transmission bandwidth is acquired through aggregation of a plurality of continuous or discontinuous carrier units, so that higher peak rate and throughput are acquired.

When the UE supports uplink CA, the UE may perform uplink transmission on multiple carrier units at the same time, so that the UE may possibly decode multiple uplink grants in the same subframe, and how the UE processes the uplink grants, such as an uplink grant processing sequence, which uplink grant is used for transmitting the MAC control information, which affects communication quality.

It should be understood that the embodiment of the present invention will be described by taking LTE as an example, but the present invention is not limited thereto. In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a alone, A and B together, and B alone, that is, at least one of A or B is expressed. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 3 shows a schematic block diagram of a method 200 for transmitting information according to an embodiment of the present invention. As shown in fig. 3, the method 200 may be performed by a UE, in particular by a baseband processor of the UE, the method 200 comprising:

S210, receiving N pieces of uplink authorization information sent by a base station in a first transmission time interval, wherein the ith piece of uplink authorization information in the N pieces of uplink authorization information is used for indicating user equipment to send new data to the base station through a carrier unit corresponding to the ith piece of uplink authorization information.

S215, scheduling the transmission of carrier units corresponding to the N pieces of uplink grant information. Specifically, the data transmission of the carrier unit corresponding to the (N-1) uplink grant information in the N uplink grant information may be scheduled preferentially, and the MAC control information transmission of the carrier unit corresponding to the uplink grant information other than the (N-1) uplink grant information in the N uplink grant information may be scheduled last based on the data transmission scheduled preferentially.

After the scheduling in S215 is performed, further, in S220, new data is transmitted to the base station through carrier units corresponding to the (N-1) uplink grant information, respectively, in a second transmission time interval, and medium access control MAC control information is transmitted to the base station through carrier units corresponding to the uplink grant information other than the (N-1) uplink grant information, in the second transmission time interval, wherein N, i is a positive integer, N is greater than or equal to 2, i is greater than or equal to N, respectively, and the second transmission time interval is later than the first transmission time interval.

Specifically, if the UE receives N pieces of uplink grant information for transmitting new data in one transmission time interval (Transmission Time Interval, TTI), where the N pieces of uplink grant information correspond to the N carrier units one by one, the UE may schedule data transmission of the carrier unit corresponding to (N-1) pieces of uplink grant information preferentially in the N pieces of uplink grant information when scheduling transmission of the carrier unit corresponding to the N pieces of uplink grant information, and schedule MAC control information transmission of the carrier unit corresponding to uplink grant information other than the (N-1) pieces of uplink grant information finally in the N pieces of uplink grant information, for example, 1 to 6 pieces of uplink data packets to be transmitted, the UE receives three pieces of grant information, where one piece of grant information corresponds to the primary carrier unit, the other two pieces of grant information correspond to the secondary carrier units respectively, the MAC layer may schedule data packets 1 and 2 on one secondary carrier unit, MAC layer data packets 3 and 4 on the other secondary carrier unit, and finally the MAC layer schedules MAC control information to be transmitted to the UE on the primary carrier unit according to the final scheduling condition, and the MAC layer is generated by the UE and transmitted to the physical layer after the physical layer is processed.

Alternatively, the first transmission time interval and the second transmission time interval in the embodiment of the present invention may refer to one subframe, one OFDM symbol, etc., and may also be a transmission time unit in a future wireless communication system. The invention is not limited in this regard.

In order to send data on the uplink shared channel, the UE needs to receive a legal uplink grant (except for the non-adaptive HARQ retransmission, which would send the retransmission on the resources of the initial transmission, whereas the adaptive retransmission needs to have the physical downlink control channel indicating the resources for retransmission, etc.), which may be dynamically obtained from the physical downlink control channel or pre-configured in a random access response message or in Semi-persistent scheduling (Semi-Persistent Scheduling, SPS). When a transmission is requested, the MAC layer receives corresponding HARQ information from the physical layer. In other words, the uplink grant may be for adaptive retransmission or for transmission of new data. It should be understood that, in the embodiment of the present invention, the plurality of uplink grant information is information such as allocation of air interface resources and transmission time for transmitting new data. That is, the UE should first perform screening after receiving multiple uplink grants to determine the uplink grant received in the subframe for transmitting new data. How to determine the protocol is specified and not described in detail herein.

Those skilled in the art understand that there are multiple pieces of control information in the MAC, and the MAC control information may be buffer status report (Buffer Status Report, BSR) control information, or power headroom report (Power Headroom Report, PHR) control information, etc., and the MAC control information involved in the embodiment of the present invention may be part of or all of them.

And finally, the scheduled carrier unit is used for transmitting the MAC control information, so that the condition that all the scheduled states are estimated can be avoided, and the complexity of uplink transmission of the user equipment is effectively reduced.

For example, a UE configured with CA may be connected to 1 Primary Cell (Pcell) and multiple Secondary cells (scells), where the UE initiates random access on the Pcell and establishes connection, a carrier corresponding to the Pcell is a Primary carrier unit, and a carrier corresponding to the Scell is a Secondary carrier unit. Wherein, the Pcell is used for providing security input parameters of the UE, non-access stratum mobility information of the UE, and the like. Those skilled in the art understand that under CA, the UE has only one radio resource control (Radio Resource Control, RRC) connection, and the change of RRC is completed only by RRC reconfiguration message, and the RRC reestablishment is triggered only when the Pcell fails in radio link, but not when the Scell fails in radio link. In order to improve the state synchronism of the UE and the eNB base station, control information is transmitted to the base station through the main carrier unit as much as possible. It should be understood that the control information in the embodiment of the present invention may be MAC control information or physical layer control information, for example, physical uplink control channel information, etc., which should not be limited to this.

Therefore, according to the method for transmitting information provided by the embodiment of the invention, the MAC control information is transmitted in the last scheduled carrier unit, so that the condition that all scheduled states are estimated can be avoided, and the complexity of uplink transmission of the user equipment is effectively reduced. And the last scheduled carrier unit is a main carrier unit, and meanwhile, the state synchronism between the user equipment and the base station can be improved.

Optionally, in the embodiment of the present invention, the ue may further improve state synchronization between the ue and the base station by sending signaling radio bearer (signalling radio bearers, SRB) data to the base station through the primary carrier unit. Specifically, SRB is a special radio bearer used to transport radio resource control (Radio Resource Control, RRC) and non-access stratum (Non Access Stratum, NAS) messages. For example, SRB0 need not be established during signaling establishment, and SRB1 and SRB2 are configured in RRC connection setup and RRC reconfiguration messages. The SRB data is placed on the primary carrier element for transmission so that the user equipment can maintain state synchronization when establishing a connection with the base station. The user equipment may also send SRB data on the primary carrier element alone, which is not limited in this application as to whether SRB data is sent on the primary carrier element alone or together with the MAC control information.

It should be understood that, after determining the uplink grant for transmitting new data, the UE may determine uplink grant information corresponding to the primary carrier unit according to the plurality of uplink grant information for transmitting new data, specifically, each of the plurality of uplink grant information may include an identifier of a corresponding carrier unit, for example, servCellIndex, where ServCellIndex is typically 0 corresponds to the primary carrier unit, 1-7 corresponds to the secondary carrier unit, and ServCellIndex of the secondary carrier unit is configured by the base station. As long as the identifiers that can make the uplink grant information and the carrier units correspond to each other one by one can be used as the embodiment of the present invention, the present invention is not limited thereto.

Specifically, the UE preferentially schedules data transmission of the plurality of secondary carrier units before scheduling MAC control information transmission of the primary carrier unit. Typically, the transmission of the MAC control information needs to be calculated after all the scheduling is completed. For example, if the UE receives 5 pieces of uplink grant information for transmitting new data in one subframe, the uplink grant information includes uplink grant information corresponding to the primary carrier and 4 pieces of uplink grant information corresponding to the secondary carrier. If the UE preferentially schedules data transmission of the primary carrier unit and transmits buffer status report (Buffer Status Report, BSR) control information by using the primary carrier unit, when calculating the BSR, the buffer data amount of the UE after the data transmission of 5 carrier units is scheduled is estimated first, which makes calculating the BSR more complicated.

According to the embodiment of the invention, the MAC control information of the main carrier unit is finally scheduled to be sent based on the data of the priority scheduling, so that the condition that all the scheduled states are needed to be estimated when the MAC control information is sent can be avoided, and the complexity of uplink sending of the user equipment is effectively reduced.

Optionally, in an embodiment of the present invention, the MAC control information includes: at least one of a buffer status report BSR or a power headroom report PHR.

Those skilled in the art understand that when the UE requests uplink resources from the eNB through the uplink scheduling request (Scheduling Request, SR), it only indicates whether it has uplink data to transmit, and does not indicate how much uplink data it needs to transmit. The UE needs to tell the eNB through the BSR how much data in its uplink buffer needs to be sent, so that the eNB decides how much uplink resources to allocate to the UE. The BSR reporting will be triggered when the following events occur: 1. the uplink data buffer of the UE is empty and new data arrives, for example: the UE transmits uplink data for the first time. This BSR is referred to as a "Regular BSR"; if the UE has sent a BSR and is waiting for an uplink grant, and there is a higher priority data to transmit, the UE triggers BSR reporting. This BSR is referred to as a "Regular BSR"; the UE periodically updates the buffer status of the UE to the eNB, the eNB configures a timer for the UE, and if the timer is overtime, the UE triggers the BSR to report. This BSR is referred to as a "Periodic BSR"; 4. to improve the robustness of BSR, LTE provides a mechanism to retransmit BSR: this is to avoid the situation where the UE has sent a BSR but has not received an uplink grant. The eNB configures a timer for the UE, and when the timer expires and data can be transmitted in any one of the logical channels of the UE, the BSR is triggered. This BSR is referred to as a "Regular BSR". As long as any of the above trigger events occurs, the UE sends the BSR to the eNB through the last carrier element. And when any carrier unit has residual resources after the data is scheduled and the triggering condition of the Buffer Status Report (BSR) is not met, the UE can send the Padding BSR to the eNB through the residual resources of any carrier unit.

Similarly, PHR reporting will be triggered when the following events occur: and reporting the timeout of the periodic PHR-Timer. And 2, reporting when the inhibit PHR-Timer overtime and the path loss exceeds a threshold dl-PathlossChange. 3. For each uplink bandwidth, if there is room after the logic channel data is sent, power reporting can be performed.

It should be understood that the embodiment of the present invention is described by taking BSR and/or PHR, and some common triggering conditions as examples, which are not limited thereto.

The last scheduled carrier unit is used for sending the BSR or PHR, so that the need of estimating the current UE buffer data quantity or uplink sending power allowance after all scheduling is completed when the BSR and/or PHR is sent can be avoided, and the complexity of uplink sending of the user equipment is effectively reduced.

For each uplink grant, each logic channel buffer data can be scheduled according to the logic channel priority, and if the carrier unit corresponding to each uplink grant has residual resources after the corresponding data is scheduled, the padding BSR can be triggered, and the scheduled MAC PDU is sent to the physical layer for processing, so as to perform uplink transmission.

The method for transmitting information according to the embodiment of the present invention is described from the UE perspective, and the technical solution of the base station side is briefly described below. Specifically, the base station firstly transmits N pieces of uplink grant information to the UE, where the N pieces of uplink grant information are the same as the N pieces of uplink grant information received by the UE, and secondly, the base station receives uplink data transmitted by the UE according to the N pieces of uplink grant information. Specifically, the above MAC control information may be received through a primary carrier element.

It should be understood that the interaction and related characteristics, functions, etc. of the base station and the user equipment described at the base station side correspond to the related characteristics, functions, etc. at the user equipment side, and are not described herein for brevity.

It should also be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Having described the method for transmitting information in detail according to the embodiment of the present invention, the apparatus for transmitting information according to the embodiment of the present invention will be described with reference to fig. 4 and 5, and technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 4 shows a user equipment 300 transmitting information according to an embodiment of the present invention. As shown in fig. 4, the user equipment 300 includes:

a receiving unit 310, configured to receive N pieces of uplink grant information sent by a base station in a first transmission time interval, where an ith uplink grant information in the N pieces of uplink grant information is used to instruct a user equipment to send new data to the base station through a carrier unit corresponding to the ith uplink grant information.

A scheduling unit 315, configured to schedule data transmission of carrier units corresponding to (N-1) uplink grant information in the N uplink grant information preferentially, and schedule MAC control information transmission of carrier units corresponding to uplink grant information other than the (N-1) uplink grant information in the N uplink grant information finally based on the data transmission scheduled preferentially.

A transmitting unit 320, configured to send new data to the base station through carrier units corresponding to the (N-1) uplink grant information in a second transmission time interval after the scheduling unit 315 schedules the transmission of carrier units corresponding to the N uplink grant information, and send medium access control MAC control information to the base station through carrier units corresponding to uplink grant information other than the (N-1) uplink grant information in the second transmission time interval, N, i are positive integers, N is greater than or equal to 2, i is greater than or equal to N, and the second transmission time interval is later than the first transmission time interval.

Therefore, the user equipment provided by the embodiment of the invention has the advantages that the last scheduled carrier unit is used for sending the MAC control information, and the condition that all the scheduled states are estimated can be avoided, so that the complexity of uplink sending of the user equipment is effectively reduced.

Optionally, in the embodiment of the present invention, the carrier units corresponding to the (N-1) uplink grant information other than the (N-1) uplink grant information are primary carrier units, and the carrier units corresponding to the (N-1) uplink grant information are secondary carrier units.

Optionally, in an embodiment of the present invention, the sending unit 320 is further configured to:

and transmitting Signaling Radio Bearer (SRB) data to the base station through the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information in the second transmission time interval.

Optionally, in the embodiment of the present invention, at least one of the BSR or PHR is obtained based on data transmission of the carrier unit corresponding to the (N-1) uplink grant information.

And when the carrier unit corresponding to at least one uplink grant message in the N uplink grant messages is determined to have the remaining uplink resources, transmitting Padding BSR to the base station through the remaining uplink resources.

Optionally, in an embodiment of the present invention, any one of the N pieces of uplink grant information includes an index for identifying a carrier unit corresponding to the any one of the N pieces of uplink grant information.

It should be understood that the ue 300 for transmitting information according to the embodiment of the present invention may correspond to the ue in the embodiment of the method of the present invention, and the foregoing and other operations and/or functions of each unit in the ue 300 are respectively for implementing the corresponding flow of the method in fig. 3, and are not described herein for brevity.

As shown in fig. 5, an embodiment of the present invention further provides a user equipment 400 for transmitting information, where the user equipment 400 includes: a processor 410, a memory 420, a bus system 430, and a transceiver 440, wherein the processor 410, the memory 420, and the transceiver 440 are connected through the bus system 430, the memory 420 is used for storing instructions, and the processor 410 is used for executing the instructions stored in the memory 420 to control the transceiver 440 to transmit signals; wherein the processor 410 is configured to: receiving N pieces of uplink authorization information sent by a base station in a first transmission time interval, wherein the ith uplink authorization information in the N pieces of uplink authorization information is used for indicating user equipment to send new data to the base station through a carrier unit corresponding to the ith uplink authorization information; transmitting new data to the base station through carrier units corresponding to (N-1) uplink grant information in the N uplink grant information respectively in a second transmission time interval, and transmitting Media Access Control (MAC) control information to the base station through carrier units corresponding to uplink grant information except for the (N-1) uplink grant information in the N uplink grant information in the second transmission time interval, wherein N, i is a positive integer, N is more than or equal to 2, i is less than or equal to N, and the second transmission time interval is later than the first transmission time interval; when the transmission of the carrier units corresponding to the N uplink grant information is scheduled, the user equipment preferentially schedules the data transmission of the carrier units corresponding to the (N-1) uplink grant information, and finally schedules the MAC control information transmission of the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information based on the preferentially scheduled data transmission.

It should be appreciated that in embodiments of the present invention, the processor 410 may be a central processing unit (Central Processing Unit, simply "CPU"), and the processor 410 may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 420 may include read only memory and random access memory and provides instructions and data to the processor 410. A portion of memory 420 may also include non-volatile random access memory. For example, the memory 420 may also store information of the device type.

The bus system 430 may include a power bus, a control bus, a status signal bus, and the like in addition to a data bus. For clarity of illustration, however, the various buses are labeled in the figures as bus system 430.

In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 410. The steps of a method disclosed in connection with the embodiments of the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 420, and the processor 410 reads information in the memory 420 and, in combination with its hardware, performs the steps of the method described above. To avoid repetition, a detailed description is not provided herein.

Optionally, in the embodiment of the present invention, carrier units corresponding to the (N-1) uplink grant information other than the (N-1) uplink grant information are primary carrier units, and carrier units corresponding to the (N-1) uplink grant information are secondary carrier units.

Optionally, in an embodiment of the present invention, the processor 410 is further configured to: and transmitting Signaling Radio Bearer (SRB) data to the base station through the carrier units corresponding to the uplink grant information except the (N-1) uplink grant information in the second transmission time interval.

Optionally, in an embodiment of the present invention, the processor 410 is further configured to: and when the carrier unit corresponding to at least one uplink grant message in the N uplink grant messages is determined to have the remaining uplink resources, transmitting Padding BSR to the base station through the remaining uplink resources.

It should be understood that the user equipment 400 for transmitting information according to the embodiment of the present invention may correspond to the user equipment in the embodiment of the present invention and the user equipment 300, and may correspond to the user equipment performing the method according to the embodiment of the present invention, and the foregoing and other operations and/or functions of each unit in the user equipment are respectively for implementing the corresponding flow of the method in fig. 3, which is not repeated herein for brevity.

It should be understood that the operations and/or functions of each unit in the base station provided in the embodiments of the present invention correspond to the base station in the method side, and interactions with the user equipment and related characteristics, functions, and the like correspond to related characteristics, functions of the user equipment side, which are not described herein for brevity.

It should be understood that in embodiments of the present invention, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention is essentially or a part contributing 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 storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method of transmitting information, comprising:

in a first transmission time interval, receiving N pieces of uplink authorization information from a base station, wherein the ith uplink authorization information in the N pieces of uplink authorization information is used for indicating user equipment to send new data to the base station through a carrier unit corresponding to the ith uplink authorization information;

in a second transmission time interval, transmitting first data to the base station through carrier units respectively corresponding to (N-1) uplink grant information in the N uplink grant information;

in the second transmission time interval, second data are sent to the base station through carrier units corresponding to the uplink authorization information except (N-1) uplink authorization information in the N uplink authorization information, wherein N, i is a positive integer, N is more than or equal to 2, i is less than or equal to N, and the second transmission time interval is later than the first transmission time interval;

The carrier units corresponding to the uplink grant information except the (N-1) uplink grant information are main carrier units, the carrier units corresponding to the (N-1) uplink grant information are auxiliary carrier units, and the second data comprise media access control MAC control information.

2. The method of claim 1, wherein the first data comprises data that is scheduled preferentially over the second data.

3. The method of claim 1, wherein the second data further comprises signaling radio bearer, SRB, data.

4. A method according to any one of claims 1 to 3, wherein the MAC control information comprises: at least one of a buffer status report BSR or a power headroom report PHR.

5. The method of claim 4, wherein at least one of the BSR or PHR is based on data transmission of carrier elements corresponding to the (N-1) uplink grant information.

6. A method according to any one of claims 1 to 3, further comprising:

7. A method according to any one of claims 1 to 3, wherein any one of the N pieces of uplink grant information includes an index for identifying a carrier unit to which the any one of the N pieces of uplink grant information corresponds.

8. A method according to any one of claims 1 to 3, characterized in that the method is performed by a baseband processor.

9. A wireless communication device that transmits information, the wireless communication device comprising:

a receiving unit, configured to receive N pieces of uplink grant information from a base station in a first transmission time interval, where an ith uplink grant information in the N pieces of uplink grant information is used to instruct a user equipment to send new data to the base station through a carrier unit corresponding to the ith uplink grant information;

a transmitting unit, configured to transmit, in a second transmission time interval, first data to the base station through carrier units corresponding to (N-1) pieces of uplink grant information in the N pieces of uplink grant information, respectively, and transmit, in the second transmission time interval, second data to the base station through carrier units corresponding to uplink grant information other than the (N-1) pieces of uplink grant information in the N pieces of uplink grant information, where N, i is a positive integer, N is greater than or equal to 2, i is greater than or equal to N, and the second transmission time interval is later than the first transmission time interval;

10. The wireless communication device of claim 9, wherein the first data comprises data that is scheduled preferentially over the second data.

11. The wireless communication device of claim 9, wherein the second data further comprises signaling radio bearer, SRB, data.

12. The wireless communication apparatus according to any one of claims 9 to 11, wherein the MAC control information includes: at least one of a buffer status report BSR or a power headroom report PHR.

13. The wireless communication device according to any one of claims 9 to 11, wherein at least one of a BSR or PHR is obtained based on data transmission of carrier elements corresponding to the (N-1) uplink grant information.

14. The wireless communication device according to any of claims 9 to 11, wherein the transmitting unit is further configured to:

15. The wireless communication device according to any one of claims 9 to 11, wherein any one of the N pieces of uplink grant information includes an index for identifying a carrier unit to which the any one of the N pieces of uplink grant information corresponds.

16. A wireless communication device, comprising: a memory for storing instructions and a processor for executing the instructions stored by the memory to implement the method of any one of claims 1 to 8.

17. A wireless communication device, comprising: a communication interface and a processor, wherein the processor is configured to execute instructions in a memory over the communication interface to implement the method of any one of claims 1 to 8.

18. A computer storage medium, characterized in that the computer storage medium has stored therein a program code which, when executed by a processor, implements the method of any of claims 1 to 8.

19. A communication system, comprising: a base station, and a wireless communication device as claimed in any of claims 9 to 17.