CN101039452B - Transmission method and base station node of scheduling information in enhanced dedicated channel - Google Patents

Abstract

The invention relates to mobile communication technology, and discloses an enhanced transmission method of scheduling information in a dedicated channel and a base station node, so that the base station node can perform E-DCH uplink packet scheduling according to the latest SI report. In the present invention, the RSN transmitted by the E-DPCCH judges whether the data received by the base station node is the initial transmission, and if so, the base station node records the data by saving the connection frame number and subframe number corresponding to the TTI of the data The arrival time of the initial transmission. When the base station node receives data containing SI, it is judged whether the arrival time of the initial transmission of the data is later than the last stored receiving time of SI, if so, scheduling is performed according to the SI in the data, and the The stored receiving time of the latest SI is updated with the arrival time of the first transmission of the data, otherwise, the SI in the data is ignored.

Description

Transmission method and base station node of scheduling information in enhanced dedicated channel

technical field

The invention relates to mobile communication technology, in particular to the transmission of scheduling information in enhanced dedicated channels.

Background technique

UMTS (Universal Mobile Telecommunication System, Universal Mobile Communication System) is one of the major third-generation mobile communication (The Third Generation, referred to as "3G") systems in the world. The UMTS system consists of three parts, namely Core Network (Core Network, referred to as "CN"), Universal Mobile Telecommunications System Terrestrial Radio Access Network (UMTS Terrestrial Radio Access Network, referred to as "UTRAN") and User Equipment (User Equipment, referred to as " UE") composition. The interface between CN and UTRAN is defined as Iu interface, and the interface between UTRAN and UE is defined as Uu interface.

The earliest protocol version of UMTS is R99. In this version, the bearing of uplink and downlink services is based on dedicated channels, and the data transmission rate that can be achieved is 384Kbps. However, as the user's demand for high-speed data transmission is getting higher and higher, the UMTS standard-setting organization has successively launched three-stage protocol specifications of R4, R5, and R6, and introduced High Speed Downlink Packet Access ("High Speed Downlink Packet Access" for short). HSDPA") technology and High Speed Uplink Packet Access (HSUPA) technology can provide peak rates of up to 14.4Mbps and 5.76Mbps respectively, and at the same time, greatly improve spectrum efficiency.

The main features of HSUPA in the R6 version include: the use of 2ms short frames or 10ms frames, the use of hybrid automatic repeat request (Hybrid Automatic Repeat Request, "HARQ") in the physical layer, and the fast scheduling technology of uplink base stations. In order to achieve high-efficiency transmission of user uplink data, HSUPA has newly added two uplink physical channels and three downlink physical channels, which are E-DCH Dedicated Physical Data Channels (E-DCH Dedicated Physical Data Channel, referred to as "E-DCH") for data transmission. -DPDCH"), used to transmit the enhanced dedicated physical control channel (E-DCH Dedicated Physical Control Channel, referred to as "E-DPCCH") accompanied by physical layer signaling, used to control the user's uplink transmission rate absolute authorization channel (Enhanced -DCH AbsoluteGrant Channel, referred to as "E-AGCH") and Relative Grant Channel (Enhanced-DCH RelativeGrant Channel, referred to as "E-RGCH"), and for carrying ACK (confirmation)/NACK (non-confirmation) information from base station nodes The HARQ Indicator Channel (E-DCH Hybrid ARQ Indicator Channel, referred to as "E-HICH"). In addition to adding channels at the physical layer, in order to cooperate with HSUPA, MAC-e (e refers to enhanced) and MAC-es two sublayers are introduced in Medium Access Control (MAC) to support HARQ and fast Scheduling, at the same time, can use the MAC-e Protocol Data Unit (MAC-e Protocol Data Unit, referred to as "MAC-e PDU") to carry signaling and read this signaling at the MAC-e layer of the base station. When forming a MAC-e PDU in the MAC-e sublayer, the signaling MAC-es PDU can be multiplexed, that is, multiple MAC-e PDUs are integrated into a MAC-es PDU. MAC-e and MAC-es are between the physical layer and MAC-d (d means dedicated).

Specifically, the protocols related to the enhanced dedicated channel (Enhanced-Dedicated channel, referred to as "E-DCH") on the wireless air interface (Uu interface) mainly involve the physical layer, the MAC layer and the corresponding radio resource control layer (Radio Resource Controller, referred to as "RRC") layer. Wherein, the MAC layer of E-DCH includes three MAC sublayers of MAC-e, MAC-es and MAC-d. On the UTRAN side, the MAC-e entity is in the base station node, the MAC-es entity is in the Serving Radio Network Controller (SRNC), and on the UE side, there is no distinction between MAC-e and MAC-es , which exist in the same functional unit.

The MAC layer structure of the E-DCH on the UE side is shown in Figure 1. At the sending end of the E-DCH, that is, the UE side, the logical channel Dedicated Traffic Channel (Dedicated Traffic Channel) from the Radio Link Control (Radio Link Control, "RLC") layer Traffic Channel, referred to as "DTCH") and dedicated control channel (Dedicated Control Channel, referred to as "DCCH") first enter MAC-d to form a MAC-d Protocol Data Unit (Protocol Data Unit, referred to as "PDU"), the MAC of the same logical channel -dPDU forms MAC-es PDU through MAC-es, and MAC-es PDU further forms MAC-e PDU in MAC-e, and finally maps to the physical layer through E-DCH transmission channel.

The MAC layer structure of the E-DCH on the UTRAN side is shown in Figure 2. At the receiving end of the E-DCH, that is, on the UTRAN side, the MAC-e PDUs from the E-DCH transmission channel are first sent to Multiplexing processing forms MAC-es PDUs, which are then transmitted to SRNC. MAC-es first performs macro-diversity selection, reordering, etc., and then decomposes each MAC-d PDU and sends them to the MAC-d unit, and finally through the logical channel DTCH and DCCH are sent to the RLC layer.

The MAC-e PDU includes a header and a payload part. Its structure is shown in Figure 3. The payload part of the MAC-e PDU includes multiple multiplexed together to form a MAC-es PDU, which is optionally used for uplink fast packet scheduling Scheduling Information (SI) with a length of 18 bits, and possible padding fields, are used to make the length of the MAC-e PDU equal to the specified E-DCH transport block length, and the header of the MAC-e PDU is determined by each MAC-es The corresponding parameters of the PDU are composed of a DDI field and an N field. The length of these two fields is 6 bits. In addition, the header of the MAC-e PDU also includes an optional DDI0 field.

According to 3GPP protocol specification TS25.321, the format of MAC-e PDU has the following four structures depending on whether SI is transmitted and the number of remaining bits D, where the number of remaining bits D is the length of the E-DCH transmission block minus the number of MAC-e PDUs The n MAC-es PDUs contained in the MAC-es PDU and the corresponding n DDIs contained in the MAC-e PDU header and the remaining bits of the length of the N field.

(a) The MAC-e PDU of the SI is separately transmitted, and the MAC-e PDU is composed of the 18-bit long SI;

(b) When the number of remaining bits D is less than 18 bits, the SI is not transmitted and the remaining bits are stuffing bits;

(c) When the number of remaining bits D is equal to or greater than 18 bits, but less than 24 bits, the SI is directly concatenated at the end of the MAC-es PDU, and the remaining bits are filling bits (0-5 bits);

(d) When the number of remaining bits D is equal to or greater than 24 bits, the SI is concatenated at the end of the MAC-es PDU, and a special DDI is added at the end of the MAC-e PDU header, that is, DDI0="111111", and the rest The bits are padding bits.

Since SI is the measurement information that E-DCH relies on for base station node-based uplink fast packet scheduling, the E-DCH supports two SI reporting methods based on periodic triggering and event triggering.

According to the latest 3GPP protocol specification TS25.321, when the UE is not allowed to send data, that is, when the service authorization parameter is a special value "Zero_Grant" or all HARQ processes are inactive, if the original data buffer of the UE From zero to greater than zero, that is to say, the UE changes from no data transmission to data transmission, or although there is data in the original data buffer (sending is not allowed due to resource scheduling of the base station node), there is a new high-priority When the data arrives, the UE needs to periodically send SI to the base station node on the E-DPDCH until it finally obtains the service authorization of the base station node. The SI report trigger period is configured by the radio resource control (Radio Resource Control "RRC") layer The parameter "Periodicity for Scheduling Info-no grant" control.

Even if the UE is in the state of allowing data transmission, that is, the service grant parameter is not equal to "Zero_Grant" and at least one HARQ process is active, when the E-DCH serving cell changes and the new E-DCH serving cell is not in the original serving E - When the DCH radio link is concentrated, or when the timing period specified by the parameter "Periodicity for Scheduling Info-grant" configured by RRC is reached, it will also trigger the sending of SI reports on the E-DPDCH.

Among them, the typical values of the parameters "Periodicity for Scheduling Info-no grant" and "Periodicity for Scheduling Info-grant" are 2ms, 4ms, 10ms, 20ms, 50ms, 100ms, 200ms, 500ms, 1000ms, and the reasonable SI trigger period is the system It is determined based on information such as E-DCH scheduling policy and base station node processing resource status.

In addition, when the SI is transmitted together with the data in the MAC-e PDU, if the HARQ entity cannot correctly transmit the MAC-e PDU to the radio link set containing the E-DCH serving cell, a new SI report will also be triggered.

At present, there are two ways to transmit SI on E-DPDCH. One is to transmit SI by MAC-e PDU alone. In this case, the entire MAC-e PDU is composed of the 18-bit SI. It is the way that SI is transmitted together with data in MAC-e PDU. In this case, SI is placed at the end of each MAC-es PDU.

Since the E-DPDCH adopts the HARQ operation, the transmission of the SI also supports the HARQ operation. According to the current version of TS25.321, for the case where SI is transmitted alone, the maximum number of retransmissions is fixed at 8 times; for the case where SI and data are transmitted together in the MAC-e PDU, the maximum number of retransmissions is determined by the MAC-e The HARQ configuration parameter of the E-DCH MAC-d flow in the data part transmitted simultaneously with the SI in the e PDU is determined by the "E-DCH MAC-d flow" of the RRC Information Element (Information Element, referred to as "IE") flow maximum number of retransmission (E-DCH MAC-d flow maximum retransmission times)" is given, and its value range is 0-15 times.

Since the HARQ operation in E-DCH adopts a synchronous method, that is, the initial transmission and retransmission of a certain HARQ process always occur at a fixed time, so for the 2ms Transmission Time Interval (Transmission Time Interval, referred to as "TTI") mode , there are a total of 8 parallel HARQ processes, and for the 10ms TTI mode, there are a total of 4 parallel HARQ processes. Therefore, the retransmission time of the HARQ process in E-DCH (that is, the UE sends a MAC-e PDU from a certain TTI until the UE receives the non-received response message NACK sent by the base station node, and thus sends retransmission data time), for 2ms TTI mode, it is 8×2ms or 16ms; for 10ms TTI mode, it is 4×10ms or 40ms.

In practical application, the above solution has the following problems: the base station node may not be able to obtain the latest SI report, thus affecting the performance of E-DCH uplink packet scheduling.

The main reason for this situation is that under the two methods of transmitting SI on E-DPDCH, for 2ms TTI, if SI is transmitted alone, a maximum of 8 retransmissions are required, that is to say, a maximum of 8×16ms is required That is, 128ms. If SI is transmitted together with data in MAC-e PDU, a maximum of 15 retransmissions may be required, which means that a maximum of 15×16ms or 240ms is required; for 10ms TTI, if SI is transmitted alone, the maximum It needs 8 retransmissions, that is to say, it needs to pass 8×40ms or 320ms at most. If SI and data are transmitted together in MAC-e PDU, it may need 15 retransmissions at most, that is to say, it needs to go through 15×40ms or 320ms at most. 600ms.

However, when the event specified in the SI report trigger mechanism occurs in the user terminal, the period specified in the SI report trigger mechanism is reached, or the remaining bits D of the MAC-e PDU of a certain TTI is equal to or greater than 18, the user terminal needs to report to The base station node sends a new SI report. Moreover, since the SI transmission has a very high priority, even the HARQ process whose service authorization parameter is a special value "Zero_Grant" and the HARQ process that is in an inactive state are allowed to transmit SI. Therefore, it is not difficult to find that in a certain During the HARQ retransmission of an SI report, the user terminal may need to send a new SI to the base station node.

As shown in Figure 4, since the HARQ process except the old SI report retransmission, other HARQ processes may transmit a new SI report, and before the retransmission of the old SI report is completed, if the new SI report has been is successfully received by the base station node, then when the old SI report is successfully transmitted, the new SI report will be overwritten, resulting in the base station node not obtaining the latest SI report, which greatly reduces the uplink packet scheduling. performance.

Contents of the invention

In view of this, the main purpose of the present invention is to provide an enhanced transmission method of scheduling information in a dedicated channel and a base station node, so that the base station node can perform E-DCH uplink packet scheduling according to the latest SI report.

In order to achieve the above object, the present invention provides a method for transmitting scheduling information in an enhanced dedicated channel, comprising the following steps:

The base station node records the arrival time of the initial data transmission;

If the data correctly received by the base station node contains scheduling information, then only when the arrival time of the data is later than the last stored receiving time of the scheduling information, the base station node will use the scheduling information in the data Scheduling is performed, and the receiving time of the scheduling information is updated to the arrival time of the data.

Wherein, if the data correctly received by the base station node contains scheduling information, but the arrival time of the data is earlier than the latest stored scheduling information reception time, the base station node ignores the scheduling information in the data.

In addition, in the method, the base station node judges whether the data in the corresponding transmission time interval is the initial transmission according to the retransmission sequence number in the dedicated physical control channel of the enhanced dedicated channel.

In addition, in the method, the base station node records the arrival time of the first transmission of the data by saving the connection frame number and the subframe number corresponding to the transmission time interval of the data.

In addition, in described method, also comprise following steps:

The base station node initializes the scheduling information receiving time and the arrival time.

The present invention also provides a base station node, including:

A recording module, configured to record the arrival time of the initial data transmission;

A storage module, configured to store the latest receiving time of scheduling information, the scheduling information is transmitted in the enhanced dedicated channel;

A scheduling module, configured to schedule resources according to scheduling information;

An updating module, configured to update the stored receiving time of the latest scheduling information to the arrival time of the first transmission of the data;

The judging module is used to judge whether the data received by the base station node is the initial transmission, and if so, notify the recording module to record the arrival time of the initial transmission of the data, and when the data is received correctly, judge whether it contains Scheduling information, if yes, then further judge whether the arrival time of the data in the recording module is later than the latest receiving time of the scheduling information in the storage module, if yes, trigger the scheduling module according to the The scheduling information performs scheduling, and notifies the updating module to update the last stored receiving time of the scheduling information to the arrival time of the first transmission of the data.

By comparison, it can be found that the main difference between the technical solution of the present invention and the prior art is that the RSN transmitted by the E-DPCCH judges whether the data received by the base station node is the initial transmission, and if so, the base station node stores the data with the data The connection frame number and subframe number corresponding to the TTI record the arrival time of the first transmission of the data. When the base station node receives data containing SI, it judges whether the arrival time of the initial transmission of the data is later than the last stored receiving time of SI, if so, schedules according to the SI in the data, and The stored receiving time of the latest SI is updated with the arrival time of the first transmission of the data, otherwise, the SI in the data is ignored.

During retransmission of the user terminal's separate transmission of SI to the base station node, if the user terminal has new SI to transmit, stop transmitting the separately transmitted SI, and transmit the new SI to the base station node.

The difference in this technical solution brings obvious beneficial effects, that is, the base station node judges whether the received SI report is the latest SI report sent by the user terminal, or when the user terminal has new SI to send When , stop the retransmission of the SI originally sent separately, ensure that the base station node can obtain the latest SI report from the user terminal in time, and avoid the possibility that the new SI report may be covered by the old SI report due to the retransmission of the SI problem, thereby ensuring the performance of E-DCH uplink packet scheduling.

Description of drawings

FIG. 1 is a schematic diagram of the UE side E-DCH MAC structure in the prior art;

Fig. 2 is a schematic diagram of the E-DCH MAC structure on the UTRAN side in the prior art;

Fig. 3 is the structural representation of MAC-e PDU in the prior art;

FIG. 4 is a schematic diagram of multiple HARQ process transmission SI reports in the prior art;

FIG. 5 is a structural diagram of a transmission system of scheduling information in an E-DCH according to a first embodiment of the present invention;

6 is a flowchart of a method for transmitting scheduling information in E-DCH according to a second embodiment of the present invention;

7 is a flowchart of a method for transmitting scheduling information in E-DCH according to a third embodiment of the present invention;

Fig. 8 is a flowchart of a method for transmitting scheduling information in an E-DCH according to a fourth embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The core of the present invention is that the base station node on the UTRAN side records the arrival time of the received new data, and judges whether the arrival time of the data that is correctly received and contains SI is later than the stored data when it is transmitted as new data. If the receiving time of the latest SI is yes, the base station node schedules resources according to the SI in the data, and updates the stored receiving time of the last SI to the arrival time when the data is transmitted as new data. Or, the user terminal judges whether there is new SI to be sent to the base station node during the retransmission of the single transmission SI, and if so, immediately stops retransmission of the single transmission SI, and transmits the new SI at the nearest The new SI is transmitted to the base station node on TTI.

The core of the present invention has been introduced above, and the transmission system of the scheduling information in the E-DCH according to the first embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in Figure 5, the base station node on the UTRAN side includes a judgment module, which is used to judge whether the received data is the data transmitted for the first time, that is, whether it is new data, and is also used to judge whether the correctly received data contains SI , if yes, then further judge whether the arrival time of the initial transmission of the data containing SI is later than the latest SI reception time; the recording module is used to record the arrival time of the first data transmission; the storage module is used to store the latest SI receiving time; an updating module, configured to update the stored latest SI receiving time to the arrival time of the first data transmission; and a scheduling module, configured to schedule resources according to the SI included in the data.

The following briefly describes the interrelationships among the modules of the base station node in this embodiment.

The judging module in the base station node judges whether the data received by the base station node from the UE side is new data, and if so, that is to say, when the data is the first transmission, the recording module is notified to record the arrival time of the first transmission of the data. When the data from the UE side is correctly received by the base station node, the judgment module in the base station node judges whether the data contains SI, and if so, further judges whether the arrival time recorded in the recording module of the data is later than that recorded in the storage module The receiving time of the latest SI. If the judgment module judges that the arrival time of the data containing SI recorded in the recording module is later than the receiving time of the last SI in the storage module, the trigger scheduling module will be based on the data in the data. SI schedules, and notifies the update module to update the stored receiving time of the latest SI to the arrival time of the first transmission of the data, otherwise, ignore the SI in the data.

The transmission method of the scheduling information in the E-DCH according to the second embodiment of the present invention is shown in FIG. 6 .

In step 610, the base station node receives and decodes the E-DPCCH of the current TTI. Specifically, the base station node obtains relevant control information of data transmitted in the E-DPDCH in the current TTI by receiving and decoding the E-DPCCH of the current TTI.

Next, enter step 620, the base station node judges whether the data transmitted in the E-DPDCH in the current TTI is the initial transmission. Specifically, since the retransmission sequence number (RSN) in the E-DPCCH is used to identify the retransmission times of the data transmitted in the E-DPDCH in the corresponding TTI, for example, if the RSN is 0, it means that the data is the initial transmission , if the RSN is 1, it means that the data is the first retransmission, and so on. Therefore, the base station node can judge whether the data transmitted in the E-DPDCH in the corresponding TTI is new data according to the RSN in the E-DPCCH. If the base station node judges that the data transmitted in the E-DPDCH in the current TTI is the initial transmission, then go to step 630 , otherwise, go to step 640 .

In step 630, the base station node records the arrival time of the initial transmission of the data. Specifically, for each HARQ process, the base station node defines a variable for recording the arrival time of new data in the HARQ process, and initializes the variable. For example, for each HARQ process, the base station node defines a "New_Data_Arrival_Time" variable and initializes the variable to zero. Once the base station node knows that new data is transmitted in the E-DPDCH in the current TTI, it records the arrival time of the first transmission of the data by saving the connection frame number and subframe number corresponding to the TTI of the data. For the above case, save the connection frame number and subframe number corresponding to the TTI of the data in the "New_Data_Arrival_Time" variable of the HARQ process to which the data belongs, and record the arrival time of the first transmission of the data.

Next, enter step 640, the base station node judges whether the data of the E-DPDCH in the current TTI is received correctly. Specifically, when the base station node decodes the received data correctly and sends an ACK response message, it indicates that the HARQ process to which the data belongs has successfully completed the data reception, and enters step 650; otherwise, it indicates that the data is being transmitted An error occurs during the process and needs to be retransmitted, so return to step 610.

In step 650, the base station node further judges whether the data successfully received in the current TTI contains SI. If SI is included, go to step 660; otherwise, end this process.

In step 660, the base station node determines whether the arrival time of the first transmission of the data containing the SI is later than the stored last received time of the SI. Specifically, the base station node defines a global variable for all HARQ processes to record the latest SI receiving time, and initializes the global variable. For example, define a "Restored_SI_Arrival_Time" variable to record the latest SI reception time, and initialize the variable to zero first. For the above case, when the data successfully received by the base station node within the current TTI contains SI, it is judged whether the "New_Data_Arrival_Time" variable of the HARQ process to which the data belongs is greater than the latest SI reception time saved in the "Restored_SI_Arrival_Time" variable. If the "New_Data_Arrival_Time" variable is greater than the "Restored_SI_Arrival_Time" variable, that is, the arrival time of the initial transmission of the data is later than the latest SI reception time, it indicates that the SI in the data is the latest SI, and go to step 670; otherwise, go to step 680.

In step 670, since the base station node has learned that the SI in the data is the latest SI, it schedules resources according to the SI and updates the receiving time of the last SI. Specifically, the base station node sends the SI in the data to To the E-DCH packet scheduling unit, the packet scheduling unit performs resource scheduling according to the SI, and updates the last stored SI receiving time to the arrival time of the first data transmission. For the above case, the base station node will " The "Restored_SI_Arrival_Time" variable is updated to the "New_Data_Arrival_Time" variable of the HARQ process described in the data, that is, "Restored_SI_Arrival_Time" = "New_Data_Arrival_Time".

In step 680, since the arrival time of the initial transmission of the data is earlier than the latest SI reception time, it is indicated that the SI in the data is not the latest SI. In order not to overwrite the latest SI with the old SI, the base station node ignores the SI in the data.

In this embodiment, the base station node judges whether the received SI report is the latest SI report sent by the user terminal to ensure that the base station node can obtain the latest SI report from the user terminal in time, avoiding the The resulting new SI report may be covered by the old SI report, thereby ensuring the performance of E-DCH uplink packet scheduling.

The transmission method of the scheduling information in the E-DCH according to the third embodiment of the present invention is shown in FIG. 7 .

In step 710, the user terminal determines whether the SI is being transmitted to the base station node alone. If yes, go to step 720, otherwise, end this process.

In step 720, the user terminal determines whether there is a new SI to be sent to the base station node during the retransmission of the separately transmitted SI. Specifically, after the user terminal separately transmits SI to the base station node, if it receives the NACK non-confirmation response returned by the base station node, it needs to retransmit the separately transmitted SI to the base station node until it receives the ACK returned from the base station node Acknowledge the response. If at least one of the following situations occurs during this retransmission, the user terminal will have new SI to send to the base station node:

(1) The event specified in the SI trigger mechanism occurs in the user terminal;

(2) The user terminal has reached the timing period specified in the SI trigger mechanism;

(3) When the number of remaining bits of the MAC-e PDU transmitted within a certain TTI is greater than or equal to 18.

If during the retransmission of the SI alone transmission, the user terminal has new SI to be sent to the base station node, then enter step 730, otherwise, end this process.

In step 730, the user terminal immediately stops retransmitting the SI for this single transmission. Specifically, when the user terminal is retransmitting the SI alone, if there is a new SI to be sent to the base station node, the retransmission operation of the HARQ process for the SI alone is stopped immediately, including refreshing the HARQ process of the HARQ process. buffer, set the variables "CURRENT_TX_NB" and "CURRENT_RSN" in the HARQ process to zero etc.

Next, in step 740, the user terminal transmits the new SI on the latest TTI capable of transmitting the new SI.

In this embodiment, when the user terminal has new SI to send, the retransmission of the previously sent SI alone is stopped to ensure that the base station node can obtain the latest SI report from the user terminal in time, avoiding the The resulting new SI report may be covered by the old SI report, thereby ensuring the performance of E-DCH uplink packet scheduling.

The fourth embodiment of the present invention is shown in FIG. 8 . The key point of this embodiment is that when the user terminal transmits SI to the base station node alone, the HARQ retransmission process is not enabled, that is, for the case of separate transmission of SI, if the UE receives new data from Node B Instead of retransmitting old data, new SI information is directly regenerated and a new transmission is performed on the HARQ process.

Specifically, in step 810, the user terminal receives a NACK from the Node B, indicating that the current HARQ data transmission fails.

Thereafter, in step 820 , the user terminal judges whether the data that fails to be transmitted is an SI report transmitted separately, and if so, proceeds to step 830 , otherwise proceeds to step 840 .

In step 830, the user terminal regenerates a new SI report and starts a new transmission on the HARQ process. This ensures that the SI report for each transfer is up to date. Of course, the SI report may not be transmitted separately during retransmission. If there is a new MAC-e PDU to be transmitted at this time, the SI report can be attached to this MAC-e PDU for transmission.

In step 840, the HARQ retransmission process is routinely enabled because normal data failed to be transmitted.

Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the present invention. The spirit and scope of the invention.

Claims (6)

1. A transmission method of scheduling information in an enhanced dedicated channel, characterized in that, comprising the following steps: The base station node records the arrival time of the initial data transmission; If the data correctly received by the base station node contains scheduling information, then only when the arrival time of the data is later than the last stored receiving time of the scheduling information, the base station node will use the scheduling information in the data Scheduling is performed, and the receiving time of the scheduling information is updated to the arrival time of the data. 2. The transmission method of scheduling information in the enhanced dedicated channel according to claim 1, characterized in that, if the data received by the base station node correctly contains scheduling information, but the arrival time of the data is earlier than the If the received time of the latest scheduling information is stored, the base station node ignores the scheduling information in the data. 3. The method for transmitting scheduling information in the enhanced dedicated channel according to claim 1, wherein the base station node judges the retransmission sequence number in the corresponding transmission time interval according to the retransmission sequence number in the dedicated physical control channel of the enhanced dedicated channel Whether the data is being transferred for the first time. 4. The transmission method of scheduling information in the enhanced dedicated channel according to claim 1, wherein the base station node records the connection frame number and subframe number corresponding to the transmission time interval of the data The arrival time of the initial transmission of the data. 5. The method for transmitting scheduling information in the enhanced dedicated channel according to any one of claims 1 to 4, further comprising the following steps: The base station node initializes the scheduling information receiving time and the arrival time. 6. A base station node, characterized in that, the base station node comprises: A recording module, configured to record the arrival time of the initial data transmission; A storage module, configured to store the latest receiving time of scheduling information, the scheduling information is transmitted in the enhanced dedicated channel; A scheduling module, configured to schedule resources according to scheduling information; An updating module, configured to update the stored receiving time of the latest scheduling information to the arrival time of the first transmission of the data; The judging module is used to judge whether the data received by the base station node is the initial transmission, and if so, notify the recording module to record the arrival time of the initial transmission of the data, and when the data is received correctly, judge whether it contains Scheduling information, if yes, then further judge whether the arrival time of the data in the recording module is later than the latest receiving time of the scheduling information in the storage module, if yes, trigger the scheduling module according to the The scheduling information performs scheduling, and notifies the updating module to update the last stored receiving time of the scheduling information to the arrival time of the first transmission of the data.

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