CN109756996B

CN109756996B - Uplink transmission method, device and equipment under DRX configuration and storage medium

Info

Publication number: CN109756996B
Application number: CN201711072299.1A
Authority: CN
Inventors: 李娜; 陈卓; 陈俊
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-11-03
Filing date: 2017-11-03
Publication date: 2021-01-15
Anticipated expiration: 2037-11-03
Also published as: CN109756996A; WO2019085607A1

Abstract

The embodiment of the invention discloses an uplink transmission method, an uplink transmission device, uplink transmission equipment and a storage medium under DRX configuration, wherein the method comprises the following steps: after the UE sends the MAC PDU to the base station, starting a timer to start timing; within the timing duration of the timer, the UE monitors a PDCCH subframe; and if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the UE triggers data new transmission/retransmission.

Description

Uplink transmission method, device and equipment under DRX configuration and storage medium

Technical Field

The present invention relates to Discontinuous Reception (DRX) technology, and in particular, to an uplink transmission method and apparatus under DRX configuration, a device, and a storage medium.

Background

In the existing network, Voice over Long Term Evolution (VoLTE) is a solution for carrying Voice services in a fourth generation (4G) network. After the DRX mechanism is started by the VoLTE service, the present inventors have found the following uplink packet loss problem:

after a terminal (User Equipment, UE) reports a Buffer Status Report (BSR), a subsequent base station sends a Physical Downlink Control Channel (PDCCH) subframe time for scheduling the UE to enter a DRX sleep period, and meanwhile, the base station of some manufacturers does not schedule the UE again when the UE enters an active state, which results in that a Packet Data Convergence Protocol (PDCP) discard timer (discard timer) discards an excessive Packet, where a timing duration set by the current PDCP discard timer is 100 milliseconds (ms) to 300ms, and the discard PDCP timer generates an active Packet when the timing is excessive.

Disclosure of Invention

In view of this, embodiments of the present invention provide an uplink transmission method and apparatus under DRX configuration, a device and a storage medium to solve at least one problem in the prior art, so as to prevent a UE from dropping a packet actively.

The technical scheme of the embodiment of the invention is realized as follows:

the present embodiment provides an uplink transmission method under DRX configuration, where the method includes:

after sending a media access control layer protocol data unit (MAC PDU) to a base station, UE starts a timer to start timing;

within the timer timing duration, the UE monitors a Physical Downlink Control Channel (PDCCH) subframe;

and if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the UE triggers data new transmission/retransmission.

after the UE sends the MAC PDU to the base station, starting a first timer to start timing; the duration of the first timer is the duration from the time when the UE sends the MAC PDU to the feedback time of a physical hybrid automatic repeat indicator channel (PHICH) corresponding to the time;

after the first timer is overtime, the UE continues to monitor N adjacent PDCCH subframes after the overtime; n is an integer greater than or equal to 1;

and if the UE receives PDCCH new transmission/retransmission instructions in the N adjacent PDCCH subframes, the UE triggers data new transmission/retransmission.

The present embodiment provides an uplink transmission apparatus under DRX configuration, where the apparatus includes a first starting unit and a first monitoring unit, where:

the first starting unit is used for sending the MAC PDU to the base station and starting a timer to start timing;

the first monitoring unit is configured to monitor a PDCCH subframe within the timer duration;

and the first data new transmission/retransmission unit is used for triggering data new transmission/retransmission by the UE if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe.

The present embodiment provides an uplink transmission apparatus under DRX configuration, where the apparatus includes a second starting unit and a second monitoring unit, where:

the second starting unit is used for sending a media access control layer protocol data unit (MAC PDU) to the base station and starting a first timer to start timing, wherein the duration of the first timer is the duration from the time when the UE sends the MAC PDU to the PHICH feedback time corresponding to the time;

the second monitoring unit is configured to monitor N adjacent PDCCH subframes after the timeout, after the timeout of the first timer; n is an integer greater than or equal to 1;

and the second data retransmission/retransmission unit is configured to trigger data retransmission/retransmission by the UE if the UE receives PDCCH retransmission/retransmission indications in the N adjacent PDCCH subframes.

The present embodiment provides an uplink transmission apparatus under DRX configuration, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the uplink transmission method under DRX configuration when executing the program.

The present embodiment provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the uplink transmission method in the DRX configuration described above.

The embodiment of the invention provides an uplink transmission method, device, equipment and storage medium under DRX configuration, wherein after UE sends MAC PDU to a base station, a timer is started to start timing; within the timer timing duration, the UE monitors a Physical Downlink Control Channel (PDCCH) subframe; if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the UE performs triggering data new transmission/retransmission; thus, the UE can be prevented from actively abandoning the packet.

Drawings

FIG. 1 is a diagram illustrating an exemplary DRX cycle;

FIG. 2 is a diagram illustrating a structure of a DRX cycle after a DRX-InactivetyTimer is introduced;

fig. 3 is a schematic diagram illustrating an implementation flow of an uplink transmission method under DRX configuration according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating an implementation flow of an uplink transmission method under DRX configuration according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a DRX cycle when the timer 2 and the timer 3 are used in combination according to an embodiment of the present invention;

fig. 6A is a schematic diagram illustrating a structure of an uplink transmission apparatus configured by DRX according to an embodiment of the present invention;

fig. 6B is a schematic diagram illustrating a structure of an uplink transmission apparatus configured by DRX according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a hardware entity of a terminal according to an embodiment of the present invention.

Detailed Description

The following describes the concept of DRX, "idle (idle) state" and "connected (connected) state" from the perspective of Radio Resource Control (RRC) layer; in short, after a UE completes camping in a cell, the UE is said to enter an "idle state". If the UE subsequently completes the random access process, the UE is called to enter a connected state. Whether in idle or connected state, the UE will monitor the downlink PDCCH subframe all the time to check whether there is information from the serving cell. There appears to be no problem in doing so, however, in reality, in many times, the UE does not always perform effective information interaction with the network, does not always perform an upload or download service, and does not always have voice data transmission during a call. Most of the time, the UE and the network are not data interactive, and it is obviously very power consuming if the UE continuously monitors the PDCCH subframe at this time. Therefore, under the premise of ensuring effective data transmission, it is necessary to design a mechanism for saving power of the UE, which is called DRX.

The DRX mechanism may cause the UE to periodically enter a sleep mode at some time, and wake up from the sleep mode when monitoring is needed instead of monitoring the PDCCH subframe, so as to achieve the purpose of saving power for the UE. Although this has some impact on the latency of data transmission, it makes sense to perform DRX in view of the more important power consumption of the UE if such latency does not impact the user experience.

A typical DRX cycle is shown in fig. 1, and the period of time identified as "On Duration" is the time when the UE monitors the downlink PDCCH subframe, and in "Duration", the UE is in an awake state. During the period of time that identifies "DRX sleep time (Opportunity for DRX)", the UE enters sleep without monitoring PDCCH subframes for power saving. As can be seen from this fig. 1, the longer the time for DRX sleep, the lower the power consumption of the UE, but the delay of the corresponding traffic transmission will increase.

Consider the following scenario: the subframe 0 is the last subframe of the wakeup time OnDuration, and at this time, the network side has just one large byte of data to be sent to the UE, and the data cannot be completely sent in the subframe 0. If the DRX cycle according to fig. 1 is followed, the UE will enter DRX sleep state in subframe 1 and will not receive any downlink PDSCH data from the network side. The network side can only wait until the DRX period is finished and continue to send the data which is not transmitted to the UE when the next OnDuration moment comes. Although this processing mechanism has no error, it obviously increases the processing delay of the whole service. To avoid this, a DRX-Inactivity timer as shown in fig. 2 is added to the DRX mechanism. If a DRX inactivity timer (DRX-inactivity timer) is running, the UE needs to continue monitoring downlink PDCCH subframes until the DRX inactivity timer times out even if the OnDuration time originally configured has ended. After the DRX-InactivetyTimer mechanism is added, the processing delay of data is obviously reduced.

Fig. 2 illustrates that the DRX-inactivity timer is used to reduce the processing delay of data, but if the duration of the DRX-inactivity timer is set too long, and the timer has not timed out after the data transmission of the network layer is completed, the UE has to continue to monitor the downlink subframes, and cannot enter the sleep state in time. In order to make the UE enter the sleep state as fast as possible, the system introduces a MAC control unit DRX command related to DRX. When the network side detects that no uplink and downlink Data can be transmitted, a Media Access Control (MAC) Protocol Data Unit (PDU) may be sent to the UE, where the PDU carries a DRX command Control Unit. When the UE receives the DRX control unit, it stops OnDurationTimer and DRX-inactivity timer and enters DRX as soon as possible.

One DRX cycle in fig. 1 is equal to the sum of the UE wake-up time (ON-duration) and the sleep time. In LTE, the system may configure a short DRX cycle (short DRX cycle) or a long DRX cycle (long DRX cycle) for the UE according to different service scenarios. For example, when a VOIP service is performed, the voice codec usually sends a VOIP packet in 20ms, a DRX short cycle with a length of 20ms can be configured, and a DRX long cycle can be configured during a longer silence period during the voice call. If the short cycle and the long cycle are configured at the same time and the DRXShortCyclerTimer is overtime, the UE enters the long DRX cycle, and the DRXShortCyclerTimer is started after the DRX-InactivityTimer is overtime.

The DRX related parameters are introduced as follows:

OnDurationTimer: this parameter represents the on-line duration after the UE wakes up during one DRX cycle. With the number of PDCCH subframes as a basic unit, for example, psf6 indicates that the duration of UE on-line monitoring is 6 PDCCH subframes. When the UE meets the DRX cycle condition, the OnDurationTimer is entered.

DRX-InactivityTimer: the parameter indicates how many PDCCH subframes need to be monitored continuously after the UE successfully decodes one downlink PDCCH. Also, the number of PDCCH subframes is used as a basic unit, for example, psf80 indicates that the UE needs to continue monitoring 80 downlink PDCCH subframes to enter the sleep state. And starting the timer when a new uplink or downlink transmission is displayed in the PDCCH subframe, and stopping the timer when the Go-To-Sleep CE is received.

DRX-retransmission timer: this parameter is used in the context of downlink retransmissions. Since the downlink HARQ uses asynchronous retransmission, the UE does not determine when the eNB will send the retransmission data, but the UE may not wait indefinitely, and after all, the UE needs to save power and enter a sleep state, so that the retransmission timer indicates the maximum number of PDCCH subframes that the UE needs to continuously monitor in order to receive the expected downlink retransmission data. Similarly, the basic unit of the number of PDCCH subframes, for example, psf8 indicates that the UE needs to continue waiting for a maximum of 8 downlink PDCCH subframes in order to receive downlink retransmission data. And starting the retransmission timer when the HARQ RTT timer is overtime and data in a downlink HARQ buffer is not decoded successfully, and stopping the timer when a PDCCH subframe is received to show that the process has data transmission or belongs to a DL-SPS subframe currently. Once the HARQ RTT timer expires, it means that the UE can start receiving the retransmission data from the eNB side, and if the RTT timer has not expired, the eNB does not send the retransmission data.

A DRXStartOffset parameter, which means from which subframe the DRX cycle starts, for example, the DRX cycle is 10 subframes, and the range of DRXStartOffset is 0 to 9; and if the period is 20 subframes, the range of DRXStartOffset is 0-19, which is somewhat similar to gapOffset in measurement GAP

longDRX-CycleStartOffset: this parameter can represent both the longDRX-Cycle and DRXStartOffset meaning in sub-frame units. Such as long period select sf1280 and offset select 0. However, it should be noted that if the network side is also configured with a short-Cycle (ShortDrx-Cycle) parameter, the long Cycle must be configured as an integer multiple of the short Cycle. For example, if sf64(64 subframes) is configured in the short period, sf80 cannot be configured in the long period because 64 cannot be divided by 80.

short DRX-Cycle: this parameter indicates the short cycle duration used for DRX in units of subframes, and sf5 indicates that the short cycle duration (including on-duration) is 5 subframes.

DRXShortCycleTimer: this parameter indicates how many subframes the PDCCH has not been received for a short period to enter a long period. If the value is 2, it indicates that a continuous (2 × short drx-Cycle) subframe enters a long period without successfully decoding the PDCCH.

That is to say: the parameters related to the timer are in units of PDCCH subframes, and the parameters related to the period are in units of subframes.

The discontinuous reception mechanism enables the UE to periodically enter a sleep state, does not monitor the PDCCH subframe, and only wakes up from the sleep state when monitoring is needed, thereby achieving the purpose of saving electricity. The DRX related configuration parameters of the VoLTE service in the current network are as follows:

timer	Parameter value
		DRX Long cycle (LongDrxCycle)	SF40
Duration timer (OnDurationTimer)	PSF8
		DRX inactivity timer (DRX-InactivityTimer)	PSF4
DRX waiting for retransmission timer (DRXReTxTimer)	PSF4

Wherein SF denotes a subframe, and SF40 denotes 40 subframes; PSF denotes a PDCCH subframe, and PSF4 denotes 4 PDCCH subframes.

After a Discontinuous Reception (DRX) mechanism is started for a VoLTE service, the present inventors have found the following uplink packet loss problem:

The reasons for the above uplink packet dropping problem are mainly two reasons:

one reason is that the protocol does not design DRX mechanism for uplink synchronous HARQ case. As shown in table 1 below, the LTE uplink uses synchronous HARQ, and the retransmission may be adaptive or non-adaptive. Considering the scenario that the UE enters the sleep period after sending the BSR, when the BSR decoding fails and the non-adaptive uplink resource collides with the random access resource or the BSR decoding succeeds, the base station can only use the synchronous adaptive HARQ retransmission to feed back an Acknowledgement Character (ACK) through the PHICH, but cannot feed back the PDCCH indication immediately, because the UE cannot monitor the PDCCH during the sleep period at this time. The imperfect protocol causes that the uplink synchronous HARQ retransmission can not be normally carried out.

For the second reason, it can be seen from the network problem that base stations of some manufacturers do not perform subsequent processing on the BSR sent by the UE after the UE enters the active state (during the next on Duration), that is, do not issue the UL Grant corresponding to the BSR. Meanwhile, the terminal does not subsequently initiate the SR again until the retxsbr-Timer times out (the current network is set to 320ms by default). And the retxBSR-Timer exceeds the PDCP discard Timer already when the retxBSR-Timer is timed out (the current network configuration is 100 ms-300 ms), thereby causing the uplink packet discarding problem.

Table 1: uplink synchronous HARQ Operation (UL synchronization HARQ Operation)

In the second reason, the reason why the UE does not subsequently initiate a Scheduling Request (SR) again until the retxsbr-Timer times out is that: according to the protocol description, there are three types of BSRs: 1. regular bsr (regular bsr); 2. periodic bsr (periodic bsr); 3. padding bsr (padding bsr). In the 3 BSRs, the scheduling request is triggered only when the regular BSR is to transmit and there is not enough uplink resource. In general, there are three cases of triggering a regular BSR: 1) when the buffer of the UE buffer is empty and data enters the buffer; 2) when the buffer is not empty and data with high priority enters the buffer; 3) when the retxBSR-Timer times out resulting in a BSR being retransmitted.

According to the triggering mode description of the Regular BSR in the existing protocol, the UE buffer is not empty, and the UE is likely not to have high priority data to enter the buffer during this period, so the UE can only wait until the retxsr-Timer expires (more than 320ms) to trigger the scheduling request, and the retxsr-Timer expires earlier than the PDCP discard Timer (the current network configuration is 100 ms-300 ms), thereby causing the uplink packet discard problem.

The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.

The present embodiment provides an uplink transmission method under DRX configuration, where the method is applied to a terminal, and functions implemented by the method may be implemented by a processor in the terminal calling a program code, where of course, the program code may be stored in a memory, and thus, the terminal at least includes the processor and the memory.

Fig. 3 is a schematic diagram of an implementation flow of an uplink transmission method under DRX configuration according to an embodiment of the present invention, and as shown in fig. 3, the method includes:

step S301, after the UE sends the MAC PDU to the base station, a timer is started to start timing;

here, the MAC PDU includes at least one of: BSR MAC Control Element (CE); and (4) uplink data. That is, the MAC PDU may include only BSR MAC CE, only uplink data, or both BSR MAC CE and uplink data.

Here, "after" in the UE after transmitting the MAC PDU to the base station may refer to P timing units, e.g., subframes, and one timing unit is generally milliseconds or subframes. Of course, those skilled in the art may also determine the time to start the timer according to the time to transmit the MAC PDU, for example, determine the time to transmit the MAC PDU as the time to start the timer, or determine the time to transmit the MAC PDU plus a delay of P timing units or a delay of P timing units as the time to start the timer when P is equal to 0.

Step S302, in the timer period, the UE monitors PDCCH subframe.

Step S303, if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the UE performs triggering data new transmission/retransmission.

In other embodiments, the timer may be of different types, for example, the timer may be a fixed-duration timer or an infinite-duration timer, where the fixed-duration timer is a periodic timer whose duration is fixed, and the infinite-duration timer indicates that the duration is not fixed, that is, the period of the timer is not fixed, and when a certain condition is met, the timer will be terminated; in other words, the infinite timer is actually a dynamic period timer, and the following is discussed according to the kind of the timer:

in other embodiments, the timing duration of the timer is a fixed duration, and the method further includes: within the timing duration of the timer, if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframes, the UE continues to monitor the PDCCH subframes of the physical downlink control channel; and after the timer is overtime, the PDCCH is not monitored any more.

Here, the timer is a fixed duration timer 1: during the running period of the timer, the UE needs to continuously monitor the PDCCH subframe; within the range of the timer 1, if the UE receives a PDCCH new transmission/retransmission instruction, the UE continues to monitor the PDCCH until the timer 1 is timed out, and responds to the PDCCH new transmission/retransmission instruction, and the UE performs new transmission/retransmission of trigger data. After the fixed duration timer 1 times out, if no PDCCH new transmission/retransmission indication is received, the UE does not need to continue monitoring the PDCCH.

In other embodiments, the timer is a DRX inactivity timer; and the UE monitors the PDCCH subframe within the timing duration of the DRX inactivity timer, and does not need to continue monitoring the PDCCH after the DRX inactivity timer is overtime.

Here, the timer may multiplex a DRX inactivity timer (DRX-inactivity timer) during which the UE monitors a PDCCH subframe, and after the timer expires, does not need to continue monitoring the PDCCH;

in other embodiments, the timing duration of the timer is shorter than the timing duration of the PDCP discard timer; the method further comprises the following steps:

and if the UE does not receive a PDCCH new transmission/retransmission indication sent by the base station within the timing duration of the timer, triggering a BSR retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

Here, the timing duration of the timer is shorter than the fixed duration timer 3 of the PDCP discard timer: and starting a timer 3, if the UE sends an uplink MAC PDU but does not receive a PDCCH new transmission/retransmission instruction sent by the base station in the running period of the fixed time length timer 3, triggering a BSR request, and requesting uplink resources for retransmitting the MAC PDU. If a PDCCH new transmission/retransmission instruction of a base station is received in a monitored PDCCH subframe, responding to the PDCCH new transmission/retransmission instruction, and carrying out trigger data (data) new transmission/retransmission by UE; within the timing range, the UE does not need to continue monitoring PDCCH subframes if a PDCCH new transmission/retransmission indication of the base station is received.

In other embodiments, the timer is an infinite long timer, and the method further comprises: and if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the infinite timer is terminated at regular time, and the UE responds to the PDCCH new transmission/retransmission instruction and triggers data new transmission/retransmission.

Starting an infinite length timer, wherein the UE needs to continuously monitor a PDCCH subframe, if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the infinite length timer finishes timing, and the UE triggers data new transmission/retransmission in response to the PDCCH new transmission/retransmission instruction; the UE needs to continuously monitor the PDCCH subframe until receiving the PDCCH new transmission/retransmission indication of the base station.

Fig. 4 is a schematic diagram of an implementation flow of an uplink transmission method under DRX configuration according to an embodiment of the present invention, and as shown in fig. 4, the method includes:

step S401, after the UE sends the MAC PDU to the base station, a first timer is started to start timing; the duration of the first timer is the duration from the time when the UE sends the MAC PDU to the PHICH feedback time corresponding to the time;

here, the starting of the first timer to start timing includes: the UE determines that the time when the UE sends the MAC PDU to the base station is a first time, and starts the first timer to start timing at the first time; and determining the PHICH feedback time corresponding to the first time as a second time, and ending the timing of the first timer at the second time. The time length of the timer is the time length from the time when the UE sends the MAC PDU to the PHICH feedback time corresponding to the time. During this timer run, the UE does not monitor the PDCCH.

Step S402, after the first timer is overtime, the UE continues to monitor N adjacent PDCCH subframes after the overtime; n is an integer greater than or equal to 1;

step S403, if a PDCCH new transmission/retransmission indication is received in the N adjacent PDCCH subframes, triggering data new transmission/retransmission without continuously monitoring the PDCCH and responding to the PDCCH new transmission/retransmission indication.

In other embodiments, the method further comprises:

the terminal UE sends the MAC PDU to the base station, and starts a second timer, wherein the timing duration of the second timer is shorter than the PDCP discard timer; and if the UE does not receive a PDCCH (physical Downlink control channel) new transmission/retransmission indication sent by the base station outside the timing duration of the first timer and within the timing duration of the second timer, triggering a BSR (buffer status report) retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

Here, the second timer is a fixed-duration timer 3, i.e., the timing duration of the timer is shorter than the PDCP discard timer.

In other embodiments, the method further comprises: after the first timer is overtime, if the UE receives a Negative Acknowledgement (NACK) fed back by the base station through the PHICH, the UE does not need to continue monitoring the PDCCH.

In other embodiments, the method further comprises:

step S11, after the first timer expires, if the UE receives only ACK fed back by the base station through PHICH and does not receive PDCCH new transmission/retransmission indication in the N adjacent PDCCH subframes, the UE starts a fixed duration timer.

Here, the fixed duration timer multiplexes a DRX uplink retransmission timer. The fixed duration timer may be timer 1 described above.

Step S12, in the fixed time length timer, the UE monitors the PDCCH subframe;

step S13, if the fixed time length timer is within the fixed time length, if the monitored PDCCH subframe receives PDCCH new transmission/retransmission indication of the base station, the UE responds to the PDCCH new transmission/retransmission indication and triggers data new transmission/retransmission.

Here, within the fixed duration timer, if a PDCCH new transmission/retransmission indication of the base station is received in a monitored PDCCH subframe, the UE continues to monitor a PDCCH subframe of a physical downlink control channel; and after the timer is overtime, the PDCCH is not monitored any more.

In other embodiments, N is an integer greater than or equal to 2, and the method further includes:

if the UE receives a PDCCH new transmission/retransmission instruction after the time-out in the ith PDCCH subframe which is adjacent to the ith PDCCH subframe, the UE does not monitor the rest (N-i) PDCCH subframes after the ith PDCCH subframe, and responds to the PDCCH new transmission/retransmission instruction, and the UE triggers data new transmission/retransmission, wherein i is an integer which is more than or equal to 1 and less than or equal to (N-1);

and if the UE does not receive a PDCCH new transmission/retransmission indication after the time-out of the ith PDCCH subframe, the UE continues to monitor the (i +1) th PDCCH subframe.

The embodiment of the invention provides an uplink transmission method under DRX configuration, which comprises the following steps:

for the case of configuring DRX, the UE starts a preset timer after a certain uplink synchronous HARQ process sends an uplink MAC PDU. The preset timer can be one of the following four timers or a combination of the following timers:

a) fixed duration timer 1: during the running period of the timer, the UE needs to continuously monitor the PDCCH subframe; within the range of the timer 1, if the UE receives a PDCCH new transmission/retransmission instruction, the UE continues to monitor the PDCCH until the timer 1 is timed out, and responds to the PDCCH new transmission/retransmission instruction, and the UE performs new transmission/retransmission of trigger data. After the fixed duration timer 1 times out, if no PDCCH new transmission/retransmission indication is received, the UE does not need to continue monitoring the PDCCH. The fixed duration timer 1 may multiplex the existing DRX-inactivity timer.

b) The method comprises the following steps During this timer 2 run, the UE does not need to monitor the PDCCH indication. The length of the timer 2 is the time length from the time of sending the uplink MAC PDU to the PHICH feedback corresponding to the time. The following is discussed in three cases: 1) after the timer is overtime, the UE needs to monitor N, for example, 1 PDCCH subframes, namely the subframes with the same feedback as the PHICH, if the UE receives a PDCCH new transmission/retransmission instruction in the subframe, the UE does not need to continuously monitor the PDCCH and responds to the PDCCH new transmission/retransmission instruction, and the UE triggers data new transmission/retransmission; 2) after the timer is overtime, if the UE receives NACK fed back by the base station through the PHICH, the UE does not need to continuously monitor the PDCCH. 3) If the UE receives the ACK fed back by the base station only through the PHICH and does not receive the PDCCH new transmission/retransmission indication, the fixed time length timer 4 is started, and during the operation period of the fixed time length timer 4, the UE needs to continuously monitor the PDCCH subframe, and the situation returns to the condition a) the fixed time length timer 4 can multiplex the prior DRX-ULRecransmissionTimer.

Here, the UE does not need to listen to the PHICH during the timer 2 operation. After the timer expires, the UE needs to monitor 1 PDCCH subframe. On this PDCCH subframe, the UE needs to read PHICH information (i.e., NACK or ACK) fed back by the base station at the same time. In this embodiment, a plurality of PDCCH subframes may be monitored during asynchronous HARQ; in the case of synchronizing HACQ, multiple PDCCH subframes may be monitored, and certainly, only 1 PDCCH subframe may be monitored, in other embodiments, the PDCCH subframes are monitored cyclically, and when a PDCCH new transmission/retransmission indication is monitored in a first PDCCH subframe adjacent to the PDCCH subframe after timeout, a second PDCCH subframe does not need to be monitored, and if a PDCCH new transmission/retransmission indication is not monitored in a first PDCCH subframe adjacent to the PDCCH subframe after timeout, a second PDCCH subframe needs to be monitored until N PDCCH subframes are monitored.

c) Infinite length timer: starting an infinite length timer, wherein the UE needs to continuously monitor a PDCCH subframe, if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the infinite length timer finishes timing, and the UE triggers data new transmission/retransmission in response to the PDCCH new transmission/retransmission instruction; the UE needs to continuously monitor the PDCCH subframe until receiving a PDCCH new transmission/retransmission instruction of the base station;

d) fixed duration timer 3 whose duration is shorter than PDCP discard timer: starting a timer 3, wherein the UE needs to continuously monitor the PDCCH subframe within a timing range; if the UE sends the uplink MAC PDU but does not receive a PDCCH new transmission/retransmission instruction sent by the base station in the running period of the fixed time length timer 3, a BSR request is triggered, and uplink resources are requested to retransmit the MAC PDU. If a PDCCH new transmission/retransmission instruction of a base station is received in a monitored PDCCH subframe, responding to the PDCCH new transmission/retransmission instruction, and triggering data new transmission/retransmission by UE;

here, the MAC PDU may include only BSR MAC CE, only uplink data, or both BSR MAC CE and uplink data.

The first embodiment is as follows: timer 2 and timer 3 are used in combination

The UE starts the timer 2 and the retransmission timer 3 simultaneously after transmitting the BSR. Referring to fig. 5, during the operation of the timer 2, the UE does not need to monitor the PDCCH. After the timer 2 times out, the UE monitors 1 PDCCH subframe, but the UE does not receive a new transmission/retransmission indication sent by the base station on the subframe, so the UE starts the timer 4 to continue monitoring the PDCCH indication. The UE does not receive the retransmission new transmission indication until the timer 4 times out, so the UE enters the sleep period. Meanwhile, during the running of the timer 3, the UE does not receive the PDCCH new transmission/retransmission indication all the time, so after the timer 3 times out, the UE triggers an SR request to request retransmission of resources.

In the technical scheme provided by this embodiment, a method for triggering BSR by event is added: if the UE sends the uplink MAC PDU but does not receive a PDCCH new transmission/retransmission indication sent by the base station before the fixed time length timer with the time length shorter than the PDCP discard timer expires, a BSR retransmission request is triggered. For the uplink synchronous HARQ under the DRX condition, the UE needs to monitor the PDCCH on the PHICH subframe corresponding to the time when the MAC PDU is sent, so as to receive the base station retransmission/retransmission indication.

Compared with the prior art, the method and the device can effectively solve the problem of uplink packet loss caused by the fact that the UE enters the dormant period after sending uplink data and cannot timely receive base station scheduling under the DRX starting condition.

Under the condition that the existing network VoLTE service starts DRX, after UE reports a Buffer Status Report (BSR), some base stations do not issue an uplink grant (UL grant) corresponding to the BSR, and the UE does not initiate a Scheduling Request (SR) before a Timer (retxBSR-Timer) for retransmitting the BSR is overtime. Since the time duration of the retxsrb-Timer is longer than that of a PDCP packet loss Timer (PDCP discard Timer), a problem of UE packet loss may be caused. In this regard, the present embodiment proposes the following processing ideas: after the UE sends the MAC PDU to the base station, a timer is started;

the timer may multiplex a DRX inactivity timer (DRX-inactivity timer), during which the UE monitors PDCCH subframes, and after the timer expires, does not need to continue monitoring the PDCCH; alternatively, the first and second electrodes may be,

the time length of the timer is the time length from the time when the UE sends the MAC PDU to the PHICH feedback time corresponding to the time. During this timer run, the UE does not monitor the PDCCH. After the timer expires, the UE needs to monitor 1 PDCCH subframe, i.e. the same subframe as the PHICH feedback. If the UE receives a PDCCH new transmission/retransmission instruction in the subframe or receives NACK fed back by the base station through the PHICH, the UE does not need to continuously monitor the PDCCH. If the UE receives ACK fed back by the base station only through the PHICH and does not receive a PDCCH new transmission/retransmission indication, starting a timer with the duration equal to the duration of a DRX-ULretransmission timer (DRX-ULretransmission timer), and during the running period of the timer, the UE needs to continuously monitor a PDCCH subframe; alternatively, the first and second electrodes may be,

the timer is an infinite time-length timer, and during the running period of the timer, the UE needs to continuously monitor the PDCCH until receiving a PDCCH new transmission/retransmission instruction of the base station; alternatively, the first and second electrodes may be,

the time length of the timer is shorter than the PDCP discard timer, and after the timer is overtime, if the PDCCH new transmission/retransmission indication of the base station is not received all the time, the BSR request is triggered.

In this embodiment, after the UE sends the MAC PDU to the base station, the UE starts a timer with a duration shorter than the PDCP discard timer, and after the timer expires, if the PDCCH new transmission/retransmission indication of the base station is not received all the time, the BSR request is triggered, so as to avoid the packet loss problem caused by the continuous non-reception of the UL grant of the base station.

In the embodiment, (1) after the UE sends the MAC PDU to the base station, a timer with a duration shorter than the PDCP discard timer is started, and after the timer expires, if a PDCCH new transmission/retransmission indication of the base station is not received all the time, a BSR request is triggered; (2) and the UE monitors the PDCCH on the PHICH subframe corresponding to the moment of sending the MAC PDU.

Based on the foregoing embodiments, an embodiment of the present invention provides an uplink transmission apparatus under DRX configuration, where each unit included in the apparatus and each module included in each unit may be implemented by a processor in a terminal; of course, it may also be implemented by logic circuitry; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

Fig. 6A is a schematic diagram of a structure of an uplink transmission apparatus under DRX configuration according to an embodiment of the present invention, and as shown in fig. 6A, the apparatus 600 includes a first starting unit 601, a first monitoring unit 602, and a first data new transmission/retransmission unit 603, where:

the first starting unit 601 is configured to send a media access control layer protocol data unit MAC PDU to a base station, and start a timer to start timing;

the first monitoring unit 602 is configured to monitor a PDCCH subframe of a physical downlink control channel within a timing duration of the timer;

the first data retransmission/retransmission list 603 is configured to, if a PDCCH retransmission/retransmission indication of the base station is received in the monitored PDCCH subframe, respond to the PDCCH retransmission/retransmission indication and perform data retransmission/retransmission triggering.

In other embodiments, the timing duration of the timer is a fixed duration, and the apparatus further includes a continuous monitoring unit and a first processing unit, where:

the continuous monitoring unit is used for continuously monitoring the PDCCH subframe of the physical downlink control channel if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe within the timing duration of the timer;

and the first processing unit is used for not monitoring the PDCCH any more after the timer is overtime.

In other embodiments, the timer is a DRX inactivity timer; the first monitoring unit is used for monitoring a PDCCH subframe within the timing duration of the DRX inactivity timer; the first processing unit is configured to not need to continue monitoring the PDCCH after the DRX inactivity timer expires.

In other embodiments, the timing duration of the timer is shorter than the timing duration of the PDCP discard timer; the device further includes a first BSR retransmission unit, configured to trigger a BSR retransmission request if a PDCCH new transmission/retransmission indication sent by the base station is not received within the timing duration of the timer, where the BSR retransmission request is used to request uplink resources so as to retransmit the MAC PDU.

In other embodiments, the timer is an infinite-duration timer, and the apparatus further includes a termination unit, configured to terminate the infinite-duration timer if a PDCCH new transmission/retransmission indication of the base station is received in a monitored PDCCH subframe;

and the first data retransmission/retransmission unit is used for responding to the PDCCH retransmission/retransmission instruction and triggering data retransmission/retransmission if the PDCCH retransmission/retransmission instruction of the base station is received in the monitored PDCCH subframe.

In other embodiments, the MAC PDU includes at least one of: BSR MAC control element CE; and (4) uplink data.

The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention for understanding.

Fig. 6B is a schematic diagram of a structure of an uplink transmission apparatus under DRX configuration according to an embodiment of the present invention, and as shown in fig. 6B, the apparatus 610 includes a second starting unit 611, a second monitoring unit 612, and a second data new transmission/retransmission unit 613, where:

the second starting unit 611 is configured to send a media access control layer protocol data unit MAC PDU to the base station, and start a first timer to start timing, where a duration of the first timer is a duration from a time when the UE sends the MAC PDU to a PHICH feedback time corresponding to the time;

the second monitoring unit 612, configured to monitor N adjacent PDCCH subframes after timeout after the first timer expires; n is an integer greater than or equal to 1;

the second data retransmission/retransmission unit 613 is configured to, if a PDCCH retransmission/retransmission indication is received in the N adjacent PDCCH subframes, trigger data retransmission/retransmission without continuously monitoring the PDCCH and in response to the PDCCH retransmission/retransmission indication.

In other embodiments, the apparatus further comprises a third starting unit and a second BSR retransmission unit, wherein:

the third starting unit is configured to send a media access control layer protocol data unit MAC PDU to the base station, and start a second timer, where a timing duration of the second timer is shorter than a PDCP discard timer;

the second BSR retransmission unit is configured to, outside the timing duration of the first timer and within the timing duration of the second timer, trigger a BSR retransmission request if the UE has not received a PDCCH new transmission/retransmission indication sent by the base station, where the BSR retransmission request is used to request uplink resources so as to retransmit the MAC PDU.

In other embodiments, the apparatus further includes a second processing unit, configured to determine whether to receive, through the PHICH, NACK or ACK fed back by the base station after the first timer expires, and if the NACK fed back by the base station is received through the PHICH, the PDCCH does not need to be monitored continuously.

In other embodiments, the apparatus further comprises a fourth enabling unit, further configured to:

and after the first timer is overtime, judging whether NACK or ACK fed back by the base station is received through PHICH, and starting a fixed-time-length timer when the ACK fed back by the base station is received only through PHICH but the PDCCH new transmission/retransmission indication is not received in the adjacent N PDCCH subframes.

In other embodiments, the apparatus further comprises a third listening unit and a third data new transmission/retransmission unit, wherein:

the third monitoring unit is configured to monitor a PDCCH subframe of a physical downlink control channel within the fixed duration timer;

and the third data retransmission/retransmission unit is used for responding to the PDCCH retransmission/retransmission instruction and triggering data retransmission/retransmission if the PDCCH retransmission/retransmission instruction of the base station is received in the monitored PDCCH subframe within the timing duration of the fixed duration timer.

In other embodiments, the fixed duration timer multiplexes a DRX uplink retransmission timer.

In other embodiments, the second initiating unit comprises an initiating module and a terminating module, wherein:

the starting module is used for determining that the time of sending the MAC PDU to the base station is a first time, and starting the first timer to start timing at the first time;

and the ending module is used for determining that the PHICH feedback time corresponding to the first time is a second time, and ending the timing of the first timer at the second time.

In other embodiments, N is an integer greater than or equal to 2, and the apparatus further includes a third processing unit and a fourth processing unit, where:

the third processing unit is configured to, if a PDCCH new transmission/retransmission indication is received by an ith PDCCH subframe after timeout, no longer monitor the remaining (N-i) PDCCH subframes after the ith subframe, and respond to the PDCCH new transmission/retransmission indication to trigger data new transmission/retransmission, where i is an integer greater than or equal to 1 and less than or equal to (N-1);

the fourth processing unit is configured to continue to monitor the (i +1) th PDCCH subframe if the ith PDCCH subframe does not receive a PDCCH new transmission/retransmission indication after the time-out.

It should be noted that, in the embodiment of the present invention, if the uplink transmission method under the DRX configuration is implemented in the form of a software functional module and is sold or used as an independent product, the method may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention provides an uplink transmission device in DRX configuration, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the steps of the uplink transmission method in DRX configuration when executing the program.

Correspondingly, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the uplink transmission method in the DRX configuration described above.

Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the invention, reference is made to the description of the embodiments of the storage medium and the device of the invention.

It should be noted that fig. 7 is a schematic diagram of a hardware entity of a terminal according to an embodiment of the present invention, where the hardware entity of the terminal 700 includes: a processor 701, a communication interface 702, and a memory 703, wherein

The processor 701 generally controls the overall operation of the terminal 700.

The communication interface 702 may enable the computing device to communicate with other terminals or servers over a network.

The Memory 703 is configured to store instructions and applications executable by the processor 701, and may also buffer data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or already processed by the processor 701 and modules in the terminal 700, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An uplink transmission method in a Discontinuous Reception (DRX) configuration, the method comprising:

after a terminal UE sends a media access control layer protocol data unit MAC PDU to a base station, a timer is started to start timing; the MAC PDU includes at least a BSR MAC control element;

in the timing duration of the timer, the UE monitors a Physical Downlink Control Channel (PDCCH) subframe;

if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframe, the UE performs triggering data new transmission/retransmission; and if a PDCCH new transmission/retransmission indication sent by the base station is not received, triggering a BSR retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

2. The method of claim 1, wherein the timing duration of the timer is a fixed duration, the method further comprising:

within the timing duration of the timer, if a PDCCH new transmission/retransmission instruction of the base station is received in the monitored PDCCH subframes, the UE continues to monitor the PDCCH subframes of the physical downlink control channel;

and after the timer is overtime, the PDCCH is not monitored any more.

3. The method of claim 2, wherein the timer is a DRX inactivity timer; and the UE monitors the PDCCH subframe within the timing duration of the DRX inactivity timer, and does not need to continue monitoring the PDCCH after the DRX inactivity timer is overtime.

4. The method of claim 1, wherein the timer has a shorter timing duration than a Packet Data Convergence Protocol (PDCP) discard timer; the method further comprises the following steps:

and if the UE does not receive a PDCCH new transmission/retransmission indication sent by the base station within the timing duration of the timer, triggering a Buffer Status Report (BSR) retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

5. The method of claim 1, wherein the timer is an infinite-duration timer, and if a PDCCH new transmission/retransmission indication of the base station is received in a monitored PDCCH subframe, the infinite-duration timer is terminated in time, and the UE performs the triggering data new transmission/retransmission.

6. An uplink transmission method under DRX configuration, the method comprising:

after a terminal UE sends a media access control layer protocol data unit MAC PDU to a base station, starting a first timer to start timing; the time length of the first timer is the time length from the time when the UE sends the MAC PDU to the time when the physical hybrid automatic repeat request indicator channel PHICH corresponding to the time is fed back; the MAC PDU includes at least a BSR MAC control element;

if the UE receives a PDCCH new transmission/retransmission instruction in the N adjacent PDCCH subframes, the UE performs triggering data new transmission/retransmission; and if a PDCCH new transmission/retransmission indication sent by the base station is not received, triggering a BSR retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

7. The method of claim 6, further comprising:

the terminal UE sends the MAC PDU to the base station, and starts a second timer, wherein the timing duration of the second timer is shorter than the PDCP discard timer;

and if the UE does not receive a PDCCH (physical Downlink control channel) new transmission/retransmission indication sent by the base station outside the timing duration of the first timer and within the timing duration of the second timer, triggering a BSR (buffer status report) retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

8. The method of claim 6, further comprising:

and if the UE receives PDCCH new transmission/retransmission indication in the adjacent N PDCCH subframes, the PDCCH does not need to be monitored continuously.

9. The method of claim 6, further comprising:

after the first timer is overtime, if the UE receives a Negative Acknowledgement Character (NACK) fed back by the base station through the PHICH, the UE does not need to continue monitoring the PDCCH.

10. The method of claim 6, further comprising:

and after the first timer is overtime, if the UE receives an acknowledgement character ACK fed back by the base station only through a PHICH and does not receive a PDCCH new transmission/retransmission instruction in the adjacent N PDCCH subframes, the UE starts a fixed time length timer.

11. The method of claim 10, further comprising:

in the fixed time length of the fixed time length timer, the UE monitors a Physical Downlink Control Channel (PDCCH) subframe;

and if the monitored PDCCH subframe receives a PDCCH new transmission/retransmission instruction of the base station within the timing duration of the fixed duration timer, the UE triggers data new transmission/retransmission.

12. The method according to claim 10 or 11, wherein the fixed duration timer multiplexes DRX uplink retransmission timers.

13. The method according to any one of claims 6 to 11, wherein the starting the first timer to start timing comprises:

the UE determines that the time when the UE sends the MAC PDU to the base station is a first time, and starts the first timer to start timing at the first time;

and determining the PHICH feedback time corresponding to the first time as a second time, and ending the timing of the first timer at the second time.

14. The method according to any one of claims 6 to 11, wherein N is an integer equal to or greater than 2, the method further comprising:

if the UE receives a PDCCH new transmission/retransmission instruction at an ith PDCCH subframe adjacent to the ith PDCCH subframe after timeout, the UE does not monitor the rest (N-i) PDCCH subframes after the ith PDCCH subframe any more, and the UE triggers data new transmission/retransmission, wherein i is an integer which is more than or equal to 1 and less than or equal to (N-1);

and if the adjacent ith PDCCH subframe does not receive a PDCCH new transmission/retransmission indication after the UE is overtime, the UE continues to monitor the (i +1) th PDCCH subframe.

15. An uplink transmission apparatus under DRX configuration, the apparatus comprising a first starting unit, a first monitoring unit, and a first data new transmission/retransmission unit, wherein:

the first starting unit is used for sending a media access control layer protocol data unit (MAC PDU) to the base station and starting a timer to start timing; the MAC PDU includes at least a BSR MAC control element;

the first monitoring unit is configured to monitor a PDCCH subframe of a physical downlink control channel within a timing duration of the timer;

the first data retransmission/retransmission unit is used for triggering data retransmission/retransmission by the UE if a PDCCH retransmission/retransmission instruction of the base station is received in the monitored PDCCH subframe; and if a PDCCH new transmission/retransmission indication sent by the base station is not received, triggering a BSR retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

16. An uplink transmission apparatus under DRX configuration, the apparatus comprising a second starting unit, a second monitoring unit, and a second data new transmission/retransmission unit, wherein:

the second starting unit is used for sending a media access control layer protocol data unit (MAC PDU) to the base station and starting a first timer to start timing, wherein the duration of the first timer is the duration from the time when the UE sends the MAC PDU to the PHICH feedback time corresponding to the time; the MAC PDU includes at least a BSR MAC control element;

the second data retransmission/retransmission unit is configured to trigger data retransmission/retransmission by the UE if the UE receives PDCCH retransmission/retransmission indications in the N adjacent PDCCH subframes; and if a PDCCH new transmission/retransmission indication sent by the base station is not received, triggering a BSR retransmission request, wherein the BSR retransmission request is used for requesting uplink resources so as to retransmit the MAC PDU.

17. An uplink transmission device under a DRX configuration, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the uplink transmission method under the DRX configuration according to any one of claims 1 to 5 when executing the program; or the processor, when executing the program, implements the steps of the uplink transmission method in DRX configuration according to any one of claims 6 to 14.

18. A computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the uplink transmission method in the DRX configuration according to any one of claims 1 to 5; alternatively, the computer program when executed by a processor implements the steps of the uplink transmission method in DRX configuration of any of claims 6 to 14.