WO2012051962A1

WO2012051962A1 - Terminal and method for reporting scheduling information by such terminal

Info

Publication number: WO2012051962A1
Application number: PCT/CN2011/081100
Authority: WO
Inventors: 刘宇; 涂成林
Original assignee: 意法·爱立信半导体（北京）有限公司
Priority date: 2010-10-22
Filing date: 2011-10-21
Publication date: 2012-04-26
Also published as: CN101986593A; CN101986593B

Abstract

The present invention provides a terminal and a method for reporting scheduling information by the terminal. The method includes: step A, the terminal judges whether the scheduling information must be reported under the condition that the current frame contains authorization information and the currently configured logical channel has no cache data to transmit, if so, step C is executed, otherwise, step B is executed; step B, the terminal judges whether the content of the scheduling information of the current frame is the same as the content of the scheduling information transmitted last time, if so, the process ends, otherwise, step C is executed; step C, the terminal generates a MAC-e protocol data unit (PDU) in the current frame, and transmits the MAC-e PDU to the network side, wherein the MAC-e PDU only contains the scheduling information of the current frame. The method of the present invention implements terminal scheduling information reporting, ensures the reliable transmission of the scheduling information, effectively reduces unnecessary reporting of the MAC-e PDU only containing the scheduling information, and improves the efficiency of the scheduling information reporting.

Description

The present invention relates to the field of communications, and in particular, to a method and a terminal for reporting scheduling information by a terminal in a third generation mobile communication system TD-HSUPA technology.

TD-HSUPA. Services are classified into scheduling services and non-scheduled services according to different scheduling modes. The resources of non-scheduled services are allocated by the serving radio network controller (SRNC) for the terminal, and are determined when the radio link is established. The non-scheduled service resource allocation can only be changed by reconfiguring the wireless link. Non-scheduled resources are mainly used for data with high real-time requirements such as signaling between the transmission network and the terminal, and services with constant rate. The scheduling service allocates high-speed uplink packet access (HSUPA) resources to the Node B by the SR C, and the Node B allocates uplink resources to the terminal in the real-time data transmission process.

The network needs to know the data transmission status of the terminal in real time, so the terminal needs to report the scheduling information (SI) to the Node B to obtain the Node B. Scheduling, SI includes the number of terminal buffers, power headroom, path loss measurement information of the local cell and neighboring cells, and the like. Specifically, Fig. 1 shows the composition of the existing SI. As shown in FIG. 1, the SI includes: 5 bits of Serving and Neighbor Cell Path Loss (SNPL) information of the cell and the neighboring cell, and a UE Power Headroom (UPH) information of the 5-bit terminal. 5-bit Total E-DCH Buffer Status (TEBS) information, 4-bit highest priority Logical Channel Buffer Status (HLBS) information and 4-bit highest priority Highest Priority Logical Channel Identity (HLID) information.

There are two main situations in which the terminal reports SI:

First, the terminal does not have HSUPA resources, but needs to send uplink data, and then initiates an uplink enhanced random access channel E-RUCCH access procedure, and the requesting network allocates dedicated resources for uplink transmission to the terminal; in 3GPP TS 25.321, Such SIs are referred to as "authorization request" type scheduling information; Second, in the case of HSU transmission, whether the terminal performs scheduling or non-scheduled services, the terminal can carry SI information in the packet MAC-e-Pro Data Unit (PDU), which facilitates the network according to the SI information. The authorization information is adjusted at any time; in 3GPP TS 25.321, such SI is referred to as "scheduling request" type scheduling information. The above MAC e PDU refers to a data unit that is transmitted to the physical layer by the medium access control layer of the enhanced dedicated channel.

The present invention relates to the second case where the terminal reports the SI, that is, the terminal has established a link with the network. In the case of HSU transmission, the SI information of the "scheduling request" type needs to be reported to the network, so as to facilitate the network according to the SI. Information can be adjusted at any time. In this case, the terminal mainly reports the SI information of the "scheduling request" type in the following four ways:

1. According to the triggering SI reporting conditions specified in 3GPP TS 25.321, for example, the terminal has a higher priority logical channel data arrival, or the enhanced dedicated channel E-DCH serving cell changes, which must be carried in the MAC e PDU SI

2. The network configures the periodic timer 'SI or Ί Ι NST for the terminal. After the timer expires, the packet carries the SI in the MAC-e PDU sent by the terminal. This is to prevent the terminal from reporting the SI for a long time. The scheduling is stopped. When the network only configures the terminal for non-scheduled transmission, the T-SI-NST timer is used to periodically send the SI request network to adjust the authorization information. In other cases, the SI request network is periodically sent through the timer T"SI. Adjust authorization information;

3. If the data packet MAC-e PDU generated by the terminal according to the current authorization information is larger than the scheduling information SI length (23 bits) after accommodating the bearer logical channel data, in order to avoid wasting space, it is also in the packet MAC-e PDU. Carrying SI;

4. The authorized information but no logical channel buffer data is sent. In order to avoid wasting the authorization information of the frame, the terminal also needs to generate the MAC-e PDU containing only SI.

In the process of implementing the present invention, the inventor of the present invention finds that the starting point of reporting the scheduling information in the above fourth case is only to avoid wasting the authorization information of the current frame, but in fact, the reporting is not necessary: The timer SI or the SI-NST can ensure that the scheduling information SI is periodically reported to the network. The timer is generally configured to be a default value of 40 ms. On the other hand, in the case of HSUPA data transmission, the terminal generates a MAC based on the authorization information. The e PDU generally has enough space to carry 23-bit scheduling information after carrying logical channel data. Therefore, even if the MAC-e PDU containing only SI is reduced, the network side can know the latest situation of the terminal in time. More importantly, if the transmission of only the SI-containing MA e PDU fails, the resulting retransmission is necessary, which will impose an unnecessary burden on the terminal.

The embodiments of the present invention provide a method and a terminal for reporting scheduling information by a terminal, so as to solve the technical problem that the method for reporting scheduling information by the terminal in the prior art is low in efficiency.

In order to achieve the above object, the present invention provides a method for reporting scheduling information by a terminal, which includes the following steps:

Step A: If the current frame has the authorization information and the currently configured logical channel does not need to be buffered, the terminal determines whether the scheduling information must be reported; if yes, execute step C, otherwise, execute the step]^

Step B: The terminal determines whether the current shouting scheduling information is the same as the content of the last sent scheduling information; if yes, the process ends; otherwise, executing step C;

Step C: The terminal currently generates a MAOe protocol data unit, and sends the MAC-e protocol data unit to the network side, where the MAC e protocol data unit only includes scheduling information of the current frame.

Preferably, the method, wherein, when at least one of the following conditions is met, determining that the terminal must report scheduling information:

In the current frame, the configuration on the network side has changed;

In the current frame, the MAC layer of the terminal receives higher priority data from the application layer; in the current frame, the timer managed by the MAC layer of the terminal triggers the reporting of the scheduling information.

Preferably, the method, where the configuration on the network side comprises: a configuration of a serving cell that enhances a dedicated channel.

Preferably, the method, wherein, if the sending of the MAC e protocol data unit fails, the method further includes:

Determining whether the scheduling information included in the MAC-e protocol data unit that failed to be transmitted is the same as the scheduling information sent last time; if yes, retransmitting the MAC-e protocol data unit; otherwise, ending the process. Preferably, the method further includes: before determining whether the scheduling information included in the MA e protocol data unit that is failed to be transmitted is the same as the scheduling information that is sent last time, the method further includes:

It is judged whether the MAC-e protocol data unit is a MAC-e protocol data unit containing only scheduling information.

In another aspect, a terminal is provided, wherein:

a first determining unit, configured to determine whether the terminal must report the scheduling information if the current frame has the authorization information and the currently configured logical channel does not need to be buffered.

a second determining unit, configured to determine, when the determination result of the first determining unit is negative, whether the scheduling information of the current frame is the same as the content of the scheduling information sent last time;

a sending unit, configured to: when the result of the first determining unit is YES or the result of the second determining unit is no, generate a MAC-e protocol data unit in the current frame, and send the MAOe protocol data unit To the network side, the MAC e-memory data unit only contains scheduling information of the current frame.

Preferably, the terminal, wherein the first determining unit determines whether the terminal must report scheduling information by determining whether the terminal satisfies at least one of the following conditions:

In the current frame, the configuration of the network ft! has changed;

In the current frame, the MAC layer of the terminal receives higher priority data from the application layer; in the current frame, the timer managed by the MAC layer of the terminal for eccentricity reporting scheduling information is timed out.

Preferably, the terminal, where the configuration on the network side comprises: a configuration of a serving cell that enhances a dedicated channel.

Preferably, the terminal further includes:

a third determining unit, configured to determine, after the sending unit fails to send the MA e protocol data unit, whether the scheduling information included in the failed MAC-e protocol data unit is the same as the scheduling information sent last time;

And a retransmission unit, configured to retransmit the MAC-e protocol data unit when the determination result of the third determining unit is the same.

Preferably, the terminal further includes:

a fourth determining unit, configured to determine whether the MAC-e protocol data unit includes only a scheduling letter Information-based MAC-e protocol data unit;

The third determining unit is configured to determine, when the determination result of the fourth determining unit is YES, whether the scheduling information included in the MAC e protocol data unit that is sent out is the same as the scheduling information sent last time. .

One technical solution of the above technical solutions has the following technical effects:

When the terminal satisfies the condition that the current frame has the authorization information and the currently configured logical channel does not need to be buffered, it is determined whether the scheduling information must be reported; and the terminal does not satisfy the condition that the scheduling information must be reported, and the scheduling information of the current frame is When the content of the scheduling information sent last time is the same, the MA e protocol data unit that only contains the current scheduling information is not sent; thus, the scheduling information reporting method in the embodiment of the present invention not only ensures reliable transmission of scheduling information, but also effectively reduces The reporting of unnecessary MAC-e protocol data units containing only scheduling information improves the efficiency of reporting scheduling information, saves terminal power consumption, reduces air traffic, and helps reduce network load.

1 is a schematic structural diagram of a scheduling information of a prior art;

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

FIG. 3 is a schematic diagram of a retransmission flow when there is a MAC-e PDU waiting for retransmission in the method according to an embodiment of the present invention.

The technical problems, the technical solutions, and the advantages of the embodiments of the present invention will be more clearly described in the following description.

The inventor of the present invention finds in the process of implementing the present invention that in the prior art, in the case that the current authorization information is present but there is no logical channel buffer data transmission, in order to avoid wasting the authorization information of the frame, the terminal also It is required to generate a MAC-e PDU containing only SI to report scheduling information. The inventor of the present invention finds that the starting point of reporting scheduling information in the above case in the prior art is only to avoid wasting the authorization information of the current frame, but it is not actually necessary: On the one hand, the terminal is managed by the MAC layer of the terminal. The timer l^SI or NST that triggers the reporting of the scheduling information can be used to periodically report the scheduling information to the network. On the other hand, the HSUPA data transmission is performed. The MA e PDU generated by the terminal according to the authorization information generally has enough space to carry the 23-bit scheduling information after carrying the logical channel data. Therefore, even if the MAOe PDU containing only scheduling information is reduced, the network side can know the latest situation of the terminal in time. More importantly, if the transmission of only the SI-containing MAC-e PDU fails, the resulting retransmission is necessary, which will impose an unnecessary burden on the terminal.

In addition, from the perspective of the retransmission, if the transmission of the MAC-e PDU containing only the SI fails, the terminal needs to retransmit according to the protocol, but the scheduling information of the retransmission may be the obsolete scheduling information. It is also of little significance to waste resources, so it is necessary to control the transmission of MA-only PDUs containing SI from the perspective of retransmission.

2 is a schematic flowchart of a method for reporting scheduling information by a terminal according to an embodiment of the present invention. As shown in FIG. 2, a method for reporting scheduling information by a terminal according to an embodiment of the present invention includes the following steps:

Step 201: If there is currently authorization information and the currently configured logical channel does not have buffered data to be sent, the terminal determines whether the scheduling information must be reported; if yes, step 203 is performed; otherwise, step 202 is performed;

Step 202: The terminal determines whether the scheduling information of the current frame is the same as the content of the scheduling information sent last time; if yes, the process ends; otherwise, step 203 is performed;

Step 203: The terminal generates a MAC-e protocol data unit that only includes current frame scheduling information in the current frame, and sends the MAC-e protocol data unit to the network side.

The scheduling information reporting method of the embodiment of the present invention has established a link with the network to the terminal, and is performing HSUPA transmission, and the scheduling information reporting in the case of reporting the SI information of the "scheduling request" type to the network is controlled. In the case that the authorization information is currently available and the currently configured logical channel does not have to be buffered, it is first determined whether the terminal belongs to a MAC-e PDU that only needs to report scheduling information, and the terminal does not belong to the report but only includes the scheduling. In the case of the MAC-e PDU of the information, it is considered not to transmit the MAC-e PDU containing only the scheduling information. Therefore, the reliable transmission of the scheduling information is ensured, and the unnecessary reporting of the MAC-e protocol data unit containing only the scheduling information is effectively reduced, the efficiency of reporting the scheduling information is improved, the terminal power consumption is saved, and the air interface is reduced. Traffic helps reduce network load.

Illustratively, the terminal determines, according to the provisions of the existing 3GPP TS 25.321 protocol, whether the terminal belongs to a protocol that specifies that the SI e PDU containing only the SI must be reported. Invertedly, the present invention In the method of the embodiment, in step 201, it is determined whether the terminal meets one of the following conditions. When the terminal meets at least one of the following conditions, the terminal must report the scheduling information to the network through the MA e PDU! ^

Condition a, in the current frame, the configuration on the network side has changed;

Exemplarily, the configuration of the network measurement includes: enhancing the configuration of the serving cell of the dedicated channel; condition b, in the current frame, the MAC layer of the terminal receives higher priority data from the application layer;

Condition e, in the current frame, the timer managed by the MAC layer of the terminal triggers the timer that reports the scheduling information to time out.

Illustratively, the step of determining whether the terminal satisfies one of the following conditions includes:

Step 301, judging whether there is high priority data in the transmission buffer; if yes, the eclipse scheduling information is reported, and the MAC e PDU containing only SI is formed and sent to the network side; otherwise, the process proceeds to step 302;

Step 302: Determine whether there is an enhanced dedicated channel E-DCH serving cell change and the transmission buffer data amount changes from 0 to greater than 0; if yes, form a MAC-e PDU containing only SI, and send to the network side; otherwise Go to step 303;

Step 303: The terminal determines, according to the transmission type of the current network configuration, whether the timer used by the media access control (MAC) layer of the terminal for the ping-up reporting information is timed out; specifically, if the network-to-terminal is on the current link If the transmission type of the transmission type is scheduled, the terminal determines whether the timer T-SI expires, and if the T^SI times out, sends a new MAC-e PDU containing only scheduling information. Otherwise, step 202 is performed; The transmission type of the terminal under the current link is only configured with a non-scheduled transmission type. The terminal determines whether the timer l^SI-NST times out. If the T>SI-NST times out, it sends a new MAOe PDU containing only scheduling information. Otherwise, step 202 is performed.

Preferably, in the method of the embodiment of the present invention, the authorization information includes: a physical resource allocated to the terminal by the network ft! Illustratively, the physical resources include: power resources, time slot resources, and/or code channels. The terminal has the authorization information in the current frame, that is, the physical resource allocated by the terminal on the network side in the current frame. In the method of the embodiment of the present invention, before the step A, the method further includes: determining, by the terminal, that the current frame has the authorization information, and the currently configured logical channel does not have the cached data to be sent. Specifically, the determining step includes: Step 401: The terminal determines whether the current frame has authorization information, where the authorization information may be scheduling authorization information or non-scheduling authorization information. If there is no authorization information, determining whether the access needs to be performed according to the current protocol; exemplarily, the foregoing The current proposal includes the 3GPP TS 25.321 protocol; if there is authorization information, then proceeds to step 402;

Step 402: The terminal determines whether the currently configured logical channel needs to be buffered, and if the cached data needs to be sent, the MAOe PDU is configured according to the current protocol, such as the 3GPP TS 25.32 protocol; otherwise, the terminal proceeds to step 201.

Illustratively, in the method of the embodiment of the present invention, step 202 includes:

Step 501: The terminal determines a path loss difference (SNPL) between the current cell and the neighboring cell, an uplink transmit power margin (UPH) of the terminal, a total buffer data (TEBS), and a highest priority logical channel buffer data volume (HLBS). And highest priority logical channel identity (HLID) _;

The terminal performs SNPL measurement on the HSUPA. carrier, and determines the measurement result as the SNPL of the carrier;

The terminal measures and calculates the power of the uplink carrier used, calculates the difference between the total maximum transmit power of the terminal and the used uplink carrier power, and uses the difference as the UPH; exemplarily, the current and the specified The method measures and calculates the power of the uplink carrier used.

The terminal determines all cached data amounts of the RLC layer and the MAC layer as TEBS;

The terminal selects the logical channel with the highest priority among all the logical channels that have data to be transmitted, determines its identity flag as HLID, measures the data volume of the logical channel, and determines the measurement result as HLBS.

Step 502: The terminal compares each element in the scheduling information calculated by the current frame with each corresponding element in the scheduling information that is sent last time and is closest to the current frame, when the compared scheduling information is used. When the elements are the same, the scheduling information of the current frame is determined to be the same as the scheduling information that was sent last time, and the process is terminated, and the MAC e PDU containing only the SI is no longer generated; otherwise, the process proceeds to step 103, where only the SI is generated. The MAC-e PDU is sent to the network side through the physical layer, and the control of reporting the scheduling information of the terminal is completed.

The inventors of the present invention have also found in the process of implementing the present invention that by controlling the retransmission of the MAC-e PDU containing only SI when the transmission of the MAC-e PDU containing only SI fails, it is possible to avoid unnecessary Retransmission, thereby further improving the efficiency of reporting scheduling information by the terminal. And, from the perspective of retransmission If the transmission of the MAC-e PDU with only the SI fails, the terminal needs to retransmit according to the current protocol. However, the retransmission scheduling information may be outdated scheduling information, and the waste of resources is also meaningless. Large, so it is also necessary to control the transmission of MAC-e PDUs containing only SI.

As shown in FIG. 3, in the method of the embodiment of the present invention, when there is a MAC-e PDU that fails to be transmitted, that is, a MAC-e PDU that is waiting to be retransmitted, the method further includes:

Step 601, the terminal determines whether the MAC-e PDU waiting to be retransmitted only contains SI; if yes, step 602 is performed _; otherwise, step 605 is performed _;

Step 602, it is determined whether the SI information is the same as the last time, that is, the most recently transmitted SI information; if the same, step 603 is performed, otherwise, step 604 is performed;

Step 603: Retransmit the MA e PDU that only includes the SI, and end the process;

Step 604: Clear the MAC-e PDU that only includes the SI, and end the process;

Step 605: Retransmit the MAC-e PDU waiting to be retransmitted according to the current protocol.

According to the method of the present invention, when the MAC-e PDU that only waits for retransmission is different from the MAC-e PDU that only contains the SI that was last transmitted, the one that waits for retransmission only contains the SI. The MAC-e PDU is no longer retransmitted, thereby avoiding retransmission of the obsolete scheduling information and saving terminal resources.

According to the method of the embodiment of the present invention, if the MAC-e protocol data unit that only includes the SI fails to be sent, the method further includes: determining, by the MAC-e, the scheduling information included in the data unit, and the scheduling of the last transmission. Whether the information is the same; if yes, the MAC-e protocol data unit is retransmitted; otherwise, the process ends.

Specifically, the method in the embodiment of the present invention may retransmit the MAC e protocol data unit waiting for retransmission according to the following steps:

Step 701: The terminal receives an acknowledgement message that the network responds to a Hybrid Automatic Repeat Request (HARQ) process. For example, the terminal is on the E-DCH HARQ acknowledgment indicator channel (E-HICH channel). Receiving confirmation information of the above HARQ process reply;

Step 702: If the response message carried in the acknowledgement information, that is, the ACK information, is to confirm that the MAC-e PDU carried by the HARQ process is correctly received, the MAC-e PDU buffer is cleared and cleared. Corresponding HARQ process information, otherwise go to step 703 _;

Step 703: The terminal determines whether the MA e PDU waiting to be retransmitted only includes the scheduling information SI; if yes, step 704 is performed; otherwise, step 605 is performed to implement retransmission of the MAC e PDU according to the current protocol.

In this step, by way of example, it can be determined whether the size of the MA e PDU transport block is 23 bits, whether the MAC e PDU waiting to be retransmitted only contains the scheduling information SI; if it is 23 bits, the waiting weight is There is only scheduling information in the transmitted MAOe PDU;

Step 704: The terminal determines whether the SI information included in the MA e PDU waiting to be retransmitted is the same as the last transmitted information, and if so, retransmits the MAC e PDU; otherwise, clears the MAC-e PDU and Corresponding HARQ process information.

In step 704, it can be exemplarily determined by the following steps whether the SI information contained in the MAC e PDU waiting to be retransmitted is the same as the SI information transmitted last time or recently:

Step 801: The terminal parses the MAC-e PDU that only needs to be retransmitted, and parses the content value of each element. For example, parsing out the elements according to the format of the scheduling information shown in FIG. Content value

Step 802: Compare each of the parsed elements with each corresponding element in the scheduling information that is recently sent to the network ft!, and the comparison includes the parsed first 5 bit content value SNPL and the recently sent scheduling information. Whether the SNPL comparisons are the same, whether the parsed 6th to 10th bit content value UPH is compared with the UPH in the most recently transmitted scheduling information is similar, and similarly, the comparison of the remaining scheduling information elements is made.

The most recently transmitted scheduling information in this embodiment refers to the scheduling information that the terminal transmitted last time, that is, the most recent time in time.

In a preferred embodiment of the present invention, starting from the two-way configuration of the MAC-e PDU containing only the SI and/or the retransmission of the MAC-e PDU containing only the SI, the reporting of the scheduling information SI in the terminal ft! can be improved. Scheduling information efficiency, saving terminal power consumption, increasing data transmission success rate, and reducing network load.

The embodiment of the present invention further provides a terminal, where the terminal includes: a first determining unit, configured to determine whether the terminal must report the scheduling if the current frame has authorization information and the currently configured logical channel does not need to be buffered. Information; a second determining unit, configured to perform the first determination When the judgment result of the unit is no, it is determined whether the scheduling information of the current frame is the same as the content of the scheduling information sent last time; the sending unit is configured to determine whether the result of the first determining unit is YES or the second determining unit If the result is no, the MAC-e protocol data unit is generated in the current frame, and the MAC-e protocol data unit is sent to the network side, where the MA e protocol data unit only includes the scheduling information of the current frame.

Preferably, in the terminal of the embodiment of the present invention, the first determining unit determines whether the terminal must report the scheduling information by determining whether the terminal satisfies at least one of the following conditions:

In the current frame, the configuration of the network measurement has changed;

Preferably, in the terminal of the embodiment of the present invention, the configuration on the network side includes: a configuration of a serving cell that enhances a dedicated channel.

Preferably, the terminal in the embodiment of the present invention further includes:

a fourth determining unit, configured to determine whether the MAC-e protocol data unit is a MAC-e protocol data unit that only includes scheduling information;

The third determining unit is configured to determine, when the determination result of the fourth determining unit is yes, whether the scheduling information included in the MAC-e protocol data unit that failed to be transmitted is the same as the scheduling information that was sent last time. .

The present invention relates to the MAC layer technology in the TD-HSUPA technology of the second generation mobile communication system. By controlling the reporting and retransmission of the scheduling information of the terminal at the MAC layer, the unnecessary transmission of the MAC-e PDU containing only the SI is avoided. Retransmission reduces the burden on the terminal, saves resources, and improves the efficiency of reporting scheduling information by the terminal. The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the embodiments of the present invention. Retouching should also be considered as the scope of protection of the present invention.

Claims

A method for reporting scheduling information by a terminal, comprising the following steps: Step A: If the current frame has authorization information, and the currently configured logical channel does not need to be buffered, the terminal determines whether the scheduling must be reported. Information; if yes, perform step C, otherwise, perform step B;

Step B: The terminal determines whether the current scheduling information is the same as the content of the scheduling information sent last time; if yes, the process ends; otherwise, step C is performed;

Step C: The terminal currently generates a MAC e protocol data unit, and sends the MA e protocol data unit to the network side, where the MAC e* data unit only includes scheduling information of the current frame.

The method according to claim 1, wherein when the at least one of the following conditions is met, determining that the terminal has to report scheduling information:

In the current frame, the configuration of the network measurement has changed;

The method according to claim 2, wherein the configuration on the network side comprises: a configuration of a serving cell that enhances a dedicated channel.

The method according to claim 1, wherein if the MAC-e protocol data unit fails to be sent, the method further includes:

Determining whether the scheduling information included in the MAC-e protocol data unit that failed to be transmitted is the same as the scheduling information sent last time; if yes, retransmitting the MA e protocol data unit; otherwise, ending the process.

The method according to claim 4, wherein before determining whether the scheduling information included in the MAC-e protocol data unit that failed to be transmitted is the same as the scheduling information sent last time, the method further includes:

Determining whether the MAC-e protocol data unit is a MAC-e protocol data unit that only contains scheduling information.

6. A terminal, characterized in that it comprises:

The terminal according to claim 6, wherein the first determining unit determines whether the terminal has to report scheduling information by determining whether the terminal satisfies at least one of the following conditions:

In the current frame, the configuration on the network side has changed;

The terminal according to claim 7, wherein the configuration of the network ft! comprises: a configuration of a serving cell that enhances a dedicated channel.

The terminal according to claim 6, further comprising:

a third determining unit, configured to determine, after the sending unit fails to send the MAC-e protocol data unit, whether the scheduling information included in the failed MAC-e protocol data unit is the same as the scheduling information sent last time;

The terminal according to claim 9, further comprising:

The third determining unit is configured to determine, when the determination result of the fourth determining unit is YES, the scheduling information included in the MAC-e protocol data unit that failed to be sent, and the last sent

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