CN101674605A

CN101674605A - Method, system and device of high speed downlink packet access dispatching

Info

Publication number: CN101674605A
Application number: CN200810222201A
Authority: CN
Inventors: 许芳丽; 李晓卡
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Xiaomi Inc
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2010-03-17
Anticipated expiration: 2028-09-11
Also published as: CN101674605B

Abstract

The invention provides a method, a system and a device of high speed downlink packet access dispatching. The method comprises the following steps: a user device forms data to be transmitted into a media access control service data unit MAC-es/is SDU through an MAC-es/is entity, adds the corresponding transmission sequence number TSN to form an MAC protocol data unit MAC-es/is PDU; and according tothe uplink traffic, random accessing channel RACH and enhanced channel E-DCH are alternately selected for transmitting data. The invention can avoid the problem that the happening of unnecessary retransmission of the uplink data can cause the waste of the system resource when a user is in the enhanced CELL_FACH state.

Description

Method, system and equipment for high-speed downlink packet access scheduling

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method, a system, and a device for high speed downlink packet access scheduling.

Background

In a mobile communication system, a User Equipment (UE) has two basic operation modes: idle mode and connected mode. The UE stays in idle mode at the start of power up. After the UE completes Radio Resource Control (RRC) connection establishment, the UE transitions from an idle mode to a connected mode. In the RRC connected mode, there are four states of the UE, which reflect the level of UE connection and which transport channel the UE can use. When the RRC connection is released, the UE transitions from the connected mode to the idle mode.

In the RRC connected mode, the states of the UE are divided into four types: CELL _ DCH state, CELL _ FACH state, CELL _ PCH state, URA _ PCH state. These states define the physical channel classes used by the UE, measurement and mobility management tasks, and actions when a state transition occurs.

In the CELL _ FACH state, uplink data of a user is transmitted through a Random Access Channel (RACH). When a user is ready to transmit data on the RACH, a complete random access procedure needs to be completed. The method mainly comprises the following steps:

the UE sends an uplink synchronous code SyncUL to a base station;

2. after receiving SyncUL, the base station sends related information to a user through a Fast Physical Access Channel (FPACH);

3. after receiving the FPACH, the user sends uplink user data to the network using a Physical Random Access Channel (PRACH) at a corresponding time point according to a timing relationship.

In the R7 version of the 3GPP system, an Uplink enhanced technology (HSUPA) is introduced in a Time Division multiplexing (TDD) system. HSUPA introduces five new physical channels: enhanced Dedicated Channel (E-DCH), Dedicated physical data control Channel (E-DPDCH), E-DCH Dedicated physical control Channel (E-DPCCH), E-DCH absolute grant Channel (E-AGCH), E-DCH relative grant Channel (E-RGCH), E-DCH Hybrid Automatic repeat request (HARQ), acknowledgement indicator Channel (E-HICH) and two new MAC entities: MAC-e and MAC-es, and move the packet scheduling function from the Radio Network Controller (RNC) to the base transceiver station, realize the fast packet scheduling based on base transceiver station, and through key technologies such as HARQ, 2ms wireless short frame and multicode transmission, etc., make the data throughput rate of the up-link reach 5.76Mbit/s at most, have greatly improved the carrying capacity of the data traffic of the up-link.

When a user performs HSUPA service, that is, when the user is in a CELL _ DCH state, if the network does not allocate uplink resources to the user and the uplink data amount of the user changes from zero to non-zero, the user will initiate a scheduling request to the network and perform uplink data transmission after the network allocates resources. The related steps are as follows:

1. a user sends an enhanced uplink synchronization code SyncUL to a base station;

2. the base station feeds back FPACH;

3. a user uses a corresponding uplink enhanced random access channel (E-RUCCH) at a corresponding moment according to the timing relation to send scheduling request information to a base station;

4. the base station carries out uplink resource allocation according to the scheduling request information of the user and informs the user of available uplink physical channel E-PUCH resources through a downlink E-AGCH channel;

5. the user sends the uplink data to the base station on the distributed uplink physical channel E-PUCH resources according to the timing relation;

6. after receiving the uplink data of the user, the base station feeds back the receiving condition of the downlink data to the user by using an E-HICH channel according to the receiving condition and the timing relation;

7. if the base station fails to receive the user data, the user can carry out retransmission; otherwise new data may be sent.

In the R8 version of the 3GPP architecture, TDD HSPA enhancement techniques were introduced. In the HSPA enhanced system, when a user is in a CELL _ FACH state, a RACH channel may be used, and an E-DCH channel may also be used for uplink data transmission.

In the enhanced CELL _ FACH technology, when a user transmits uplink data, the user selects a channel type used for transmitting the uplink data according to the amount of uplink traffic.

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems: when uplink data of the same service of a user is transmitted through RACH and E-DCH channels in a staggered manner, a certain disorder phenomenon may be caused when the RNC side receives the service data. The disorder phenomenon can cause unnecessary retransmission of uplink data, cause unnecessary waste of uplink physical resources, affect user service rate and cell throughput, and cause great waste of system resources.

Disclosure of Invention

In view of this, the present invention provides a method, a system and a device for high speed downlink packet access scheduling, so as to avoid the waste of system resources caused by unnecessary retransmission of uplink data when a user is in an enhanced CELL _ FACH state.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

a method for high speed downlink packet access scheduling comprises the following steps:

the user equipment forms a media access control service data unit (MAC-es/is SDU) by data to be sent through an MAC-es/is entity, and adds a corresponding Transmission Sequence Number (TSN) to form an MAC protocol data unit (MAC-es/is PDU);

and alternately selecting a random access channel RACH and an enhanced dedicated channel E-DCH according to the uplink traffic to transmit data.

Preferably, the alternately selecting a random access channel RACH and an enhanced dedicated channel E-DCH according to the uplink traffic volume to transmit data includes:

when a random access channel RACH is selected to send data, packaging MAC-es/is PDU into MAC PDU on the RACH, and sending the MAC PDU to a network side through a physical random access channel PRACH corresponding to the RACH;

when the enhanced dedicated channel E-DCH is selected to send data, the MAC-es/is PDU is formed into MAC-E/i PDU which is sent to the network side through the enhanced uplink physical channel E-PUCH corresponding to the E-DCH.

The MAC PDU corresponding to the MAC-es entity includes: the system comprises a target channel type field TCTF, a type of UE identification, a logic channel number/type and a MAC-es PDU, wherein the MAC-es PDU comprises a transmission sequence number TSN and a MAC-es/is SDU;

the MAC PDU corresponding to the MAC-is entity includes: a target channel type field TCTF, a type of UE identification, a logical channel number/type, a length identification L, MAC-isPDU of a MAC-Is PDU, wherein the MAC-Is PDU comprises a transmission sequence number TSN, segmentation state information SS and a MAC-es/isSDU.

Preferably, the method further comprises the following steps:

the base station receives MAC PDU from PRACH, and the MAC PDU is formed into RACH frame protocol RACHFP data frame and is sent to a radio network controller RNC;

after receiving the RACH FP data frame, the RNC analyzes the MAC-es/isPDU and the corresponding TSN information by the MAC-c entity and delivers the information to the MAC-es/is entity;

the MAC-es/is entity sequences the received MAC-es/is PDUs uniformly and delivers the sequenced data to a higher layer MAC-d entity.

Preferably, the method further comprises the following steps:

the base station receives the MAC-E/i PDU from the E-PUCH, and the MAC-E entity analyzes the MAC-es/is PDU and the corresponding TSN information in the MAC-E/i PDU to form an E-DCH FP data frame and sends the E-DCH FP data frame to the RNC;

after receiving the E-DCH FP data frame, the RNC submits the MAC-es/is PDU and the corresponding TSN information in the E-DCH FP data frame to an MAC-es/is entity;

Preferably, the method further comprises the following steps:

and uniformly distributing the TSN used when the RACH sends data and the TSN used when the E-DCH sends data.

A user equipment, comprising: a media access control layer module and a transmission layer module;

the media access control layer module is used for forming MAC-es/is SDU from data to be sent and adding corresponding transmission sequence number TSN to form MAC protocol data unit MAC-es/is PDU;

and the transmission layer module is used for alternately selecting RACH and E-DCH to send data according to the uplink traffic.

Preferably, the media access control layer module is a MAC-es entity or a MAC-is entity.

Preferably, the transport layer module includes:

the MAC-c entity corresponding to the RACH is used for packaging the MAC-es/is PDU into MAC PDU on the RACH and sending the MAC PDU to the network side through a physical random access channel PRACH corresponding to the RACH;

and the MAC-E entity or the MAC-i entity corresponding to the E-DCH is used for forming the MAC-es/is PDU into the MAC-E/i PDU which is sent to the network side through the enhanced uplink physical channel E-PUCH corresponding to the E-DCH.

Preferably, the method further comprises the following steps:

and the allocation module is used for uniformly allocating the TSN used when the RACH sends data and the TSN used when the E-DCH sends data.

A radio network controller comprising: a transmission layer module and a media access control layer module;

the transmission layer module is used for receiving RACH protocol frames and E-DCH protocol frames from a base station;

and the media access control layer module is used for uniformly sequencing the MAC-es/is PDU in the RACH protocol frame and the E-DCH protocol frame.

Preferably, the transport layer module includes: a MAC-c entity corresponding to RACH, a MAC-es entity corresponding to E-DCH or a MAC-is entity;

the MAC-c entity corresponding to the RACH is used for receiving an RACH protocol frame from a base station, analyzing MAC-es/is PDU and corresponding TSN information in the RACH protocol frame, and submitting the MAC-es/is PDU and the corresponding TSN information to the MAC-es entity or the MAC-is entity;

and the MAC-es entity or the MAC-is entity corresponding to the E-DCH is used for receiving the E-DCH protocol frame from the base station and analyzing the MAC-es/is PDU in the E-DCH protocol frame.

A system for high speed downlink packet access scheduling, comprising: user equipment, a base station and a radio network controller;

the user equipment is used for forming a media access control service data unit (MAC-es/is SDU) by data to be sent through an MAC-es/is entity, adding a corresponding Transmission Sequence Number (TSN) to form an MAC protocol data unit (MAC-es/is PDU), and alternately selecting a Random Access Channel (RACH) and an enhanced dedicated channel (E-DCH) to send the data according to uplink traffic;

the base station is used for receiving data sent by the user equipment through RACH and E-DCH, and forming a protocol frame by the data and sending the protocol frame to the wireless network controller;

and the wireless network controller is used for receiving the protocol frame and uniformly sequencing the MAC-es/is PDU in the protocol frame of the RACH and the protocol frame of the E-DCH.

It can be seen from the above technical solutions that, by using the method, system and device of the present invention, when a user transmits uplink data in the enhanced CELL _ FACH state, the RACH channel data and E-DCH data are uniformly sorted, thereby making up for the deficiency that in the prior art, when two transport channels are used for transmission in an interlaced manner, disorder may occur, which may cause unnecessary retransmission of RLC layer data in the network and waste of CELL uplink shared resources. By adopting the idea and the scheme of the invention, the defect that the uplink resources are wasted due to unnecessary retransmission of the uplink data in the enhanced CELL _ FACH state can be effectively avoided.

Drawings

Fig. 1 is a schematic diagram of a mapping relationship between user-side MAC entities in the prior art;

fig. 2 is a diagram illustrating a mapping relationship between MAC entities on the RNC side in the prior art;

fig. 3 is a flowchart of a method for high speed downlink packet access scheduling according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a mapping relationship between corresponding user-side MAC entities in the embodiment of the present invention:

FIG. 5 is a diagram illustrating a MAC PDU format corresponding to MAC-es in an embodiment of the present invention;

FIG. 6 is a diagram illustrating a MAC PDU format corresponding to MAC-is in an embodiment of the present invention;

fig. 7 is a diagram illustrating a mapping relationship between corresponding RNC-side MAC entities in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a system for high speed downlink packet access scheduling according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, the method of the present invention will be described in detail below with reference to the accompanying drawings and specific examples.

It should be noted that, for convenience of description, hereinafter, MAC-es or MAC-is referred to as MAC-es/is, and MAC-e or MAC-i is referred to as MAC-e/i; the MAC-es entity or the MAC-is entity is expressed as a MAC-es/MAC-is entity, and the MAC-e entity or the MAC-i entity is expressed as a MAC-e/MAC-i entity.

In the HSPA enhanced system, when a user is in a CELL _ FACH state, a RACH channel may be used, and an E-DCH channel may also be used for uplink data transmission. And the user selects the channel type used by the uplink data transmission according to the uplink traffic volume.

First, a brief description will be given of an existing procedure for transmitting uplink data through a RACH channel and an E-DCH channel.

Fig. 1 is a schematic diagram of a mapping relationship between user side MAC entities in the prior art, and fig. 2 is a schematic diagram of a mapping relationship between Radio Network Controller (RNC) side MAC entities in the prior art. Wherein, the functions of each entity are as follows:

the MAC-d entity is used for processing data of a DCH channel;

the MAC-es entity is used for processing the data of the E-DCH channel;

the MAC-is entity is used for processing E-DCH channel data under the L2 enhanced technology;

a MAC-c entity, configured to process Paging Channel (PCH), Forward Access Channel (FACH), and RACH Channel data;

and the MAC-E entity and the MAC-i entity are used for processing the data of the E-DCH channel.

When the UE selects the channel type used for uplink data transmission as RACH, the transmission processing procedure is as follows:

the UE forms MAC-c PDU by data to be sent through an MAC-c entity and sends the MAC-c PDU to a base station;

2. after receiving MAC-c PDU from PRACH corresponding to RACH, the base station forms RACH Frame Protocol (FP) data Frame and sends the data Frame to RNC;

3, after receiving the RACH FP data frame, the RNC sends the MAC-c PDU therein to the MAC-c entity, and if the MAC-c PDU is Common Control Channel (CCCH) data, the RNC sends the MAC PDU to a Radio Resource Controller (RRC); if the data is the Dedicated Control Channel (DCCH) data or the Dedicated Traffic Channel (DTCH) data, the data is submitted to the MAC-d entity for processing.

When the channel type used by the UE for selecting the uplink data transmission is E-DCH, the transmission processing process is as follows:

the UE forms MAC-es/is PDU by the data to be sent through the MAC-es/is entity, gives the information of the corresponding Transmission Sequence Number (TSN) and the like, and then submits the information to the MAC-e/i entity; the MAC-E/i entity forms MAC es/is PDU, TSN and other information into MAC-E/iPDU, and sends the MAC-E/iPDU to the base station through an air interface enhanced uplink physical channel (E-PUCH);

2. the base station receives data from an air interface, the MAC-e entity analyzes the received MAC-e/i PDU, analyzes the information of the MAC-es/is PDU, TSN and the like in the received MAC-e/i PDU, and forms an EDCH FP data frame of an Iub port (an interface between UE and the base station) and sends the EDCH FP data frame to the RNC;

and 3, after receiving the EDCH FP data frame, the RNC submits the information of the MAC-is/es PDU, the TSN and the like in the EDCH FP data frame to an MAC-is/es entity, the MAC-is/es entity sorts the MAC-is/es PDU according to the TSN, the sorted PDU is analyzed, the MAC-d PDU in the MAC-d PDU is analyzed, and the MAC-d PDU is submitted to the MAC-d entity for processing.

It can be seen that the following differences exist between the E-DCH channel and the RACH channel:

the E-DCH channel has the HARQ retransmission function on an air interface; the RACH channel has no such processing;

2, the RNC side carries out reordering processing on the E-DCH data; the RACH channel has no such processing;

the Transmission Time Intervals (TTI) of RACH and E-DCH are different (TTI of RACH is generally 10ms, TTI of E-DCH is 5 ms).

Therefore, in the prior art, unnecessary retransmission of uplink data is caused, unnecessary waste of uplink physical resources is caused, and user service rate and cell throughput are affected.

For example, the UE transmits data of the same service, and assuming that the service uses an acknowledged mode Radio Link Control (RLC) transmission, it selects to transmit the data through the E-DCH channel first, and then selects to transmit the data through the RACH channel. UE selects E-DCH channel to send data, and the corresponding RLC PDU serial number SN of RLC layer is 0-6; UE selects RACH channel to send data, and the sequence number SN of the corresponding RLC layer RLC PDU is 7.

The network controller side receives the data from RACH channel (because the data of E-DCH channel is retransmitted), the RLC layer of the network controller side considers that the RLC PDU data packet with the sequence number SN of 0-6 is discarded, and informs UE to retransmit the data in a state report mode; and in the following sub-frame, the network controller receives the data from the E-DCH channel and correctly receives the RLC PDU data with the sequence number SN of 0-6.

And the UE re-applies for uplink E-PUCH physical resources and retransmits RLC PDU data with a serial number SN of 0-6 in the status report received by the network side.

The network controller discards the data upon receipt.

Obviously, the above process would cause a great waste of network resources.

Therefore, the method and the device for high-speed downlink packet access scheduling in the embodiments of the present invention perform a unified sequencing process on uplink data from a user in an enhanced CELL _ FACH state, no matter the uplink data is from an RACH channel or an E-DCH channel, at a network side, that is, a sequencing function position of a MAC-es/MAC-is entity at an RNC side is placed on a MAC-c (located at the RNC side for processing RACH channel data) and a MAC-E (located at a base station side for processing E-DCH channel data), so that the data of the RACH channel data and the E-DCH channel can be uniformly sequenced by using a sequencing function of the MAC-es entity.

As shown in fig. 3, it is a flowchart of a method for high speed downlink packet access scheduling according to an embodiment of the present invention, and the method mainly includes the following steps:

step 301, the UE forms MAC-es/is SDU by the data to be transmitted through the MAC-es/is entity, and adds the corresponding TSN to form MAC-es/is PDU;

step 302, selecting a channel type used for sending uplink data; if the RACH channel is selected to transmit data, step 311 is performed; if the E-DCH channel is selected to transmit the data, step 321 is executed;

311, packaging the MAC-es/is PDU into MAC PDU on RACH, and sending the MAC PDU to the network side through the physical channel PRACH corresponding to RACH;

step 312, the base station receives the MAC PDU from the PRACH, composes an RACH FP data frame from the MAC PDU, and sends the RACH FP data frame to the RNC;

step 313, after receiving the RACH FP data frame, the RNC parses the MAC-es/is PDU and the corresponding TSN information thereof by the MAC-c entity, and submits the MAC-es/is PDU and the corresponding TSN information to the MAC-es/is entity; then step 303 is performed;

step 321, the MAC-es/is PDU is composed into MAC-E/i PDU, which is sent to the network side through the enhanced uplink physical channel E-PUCH corresponding to E-DCH.

322, the base station receives MAC-E/i PDU from E-PUCH, and MAC-E entity analyzes MAC-es/is PDU and corresponding TSN information in MAC-E/i PDU to form E-DCH FP data frame and send to RNC;

step 323, after receiving the E-DCH FP data frame, the RNC submits the MAC-es/is PDU and the corresponding TSN information in the E-DCH FP data frame to the MAC-es/is entity; then step 303 is performed;

step 303, the MAC-es/is entity sorts the received MAC-es/is PDUs uniformly and delivers the sorted data to the higher MAC-d entity.

As shown in fig. 4, it is a schematic diagram of a mapping relationship between corresponding user-side MAC entities in the embodiment of the present invention:

compared with the prior art, the MAC-es/is entity function is unchanged at the UE side, and is responsible for forming MAC-es/isPDU and adding TSN function in the MAC-es/is head.

1. If the data is selected to be transmitted through the RACH channel, the MAC-es/is entity selects the proper MAC-es/is PDU size according to the format on the RACH channel and adds the TSN. Segment Status (SS) information and length identification L are also needed to be added to the MAC-is PDU; then, the MAC-es/is entity submits the MAC-es/is PDU to the MAC-c entity, and the MAC-c entity encapsulates the MAC-es/is PDU (or MAC-es/is PDU + length identification L) into the MAC PDU on the RACH channel and sends the MAC PDU to the network side.

It should be noted that, in order to enable the network side to recognize the MAC PDU, in the embodiment of the present invention, the MAC SDU structure on the existing RACH channel may be extended, the TSN is introduced therein, and the SS information and the length identifier L are also introduced as the MAC PDU corresponding to the MAC-is PDU.

As shown in fig. 5, it is a MAC PDU format corresponding to MAC-es in the embodiment of the present invention, where:

TCTF, which is a target channel type field and represents the loaded MAC-es/is PDU content;

a UE-id type, which represents the type of a UE identity, specifically an E-RNTI (enhanced radio network temporary identity) type;

the UE-ID represents the identity of the UE, and is specifically E-RNTI;

C/T, which indicates the logical channel number/type.

The MAC-es PDU format comprises a TSN and a MAC-es SDU.

As shown in fig. 6, it is a MAC PDU format corresponding to MAC-is in the embodiment of the present invention, in which:

in comparison with the MAC PDU format corresponding to MAC-es, the length indicator L of the MAC-is PDU is also included in the MAC PDU format.

The MAC-is PDU format includes TSN, SS and MAC-is SDU.

The above-mentioned TSN represents a transmission sequence number, SS represents segment status information, MAC-es SDU is a MAC-es service data unit, and MAC-is SDU is a MAC-is service data unit.

In the embodiment of the present invention, in order to distinguish from the conventional RACH format, the TCTF field in the MAC header may be used for distinguishing. The reserved field of TCTF in the current protocol can be used for RACH format differentiation, for example, MAC PDU which is new format can be identified by binary 0101.

The definition of TCTF is given in table 1 below:

TCTF	indication of
TCTF	indication of	0000	CCCH
0100	DCCH or DTCH is carried on RACH	0000	CCCH
0100	DCCH or DTCH is carried on RACH	0101	Using a new RACH frame format
0110-0111	Retention	0101	Using a new RACH frame format
0110-0111	Retention	10	SHCCH
11	Using the new E-DCH format described above	10	SHCCH

TABLE 1

In this case, the UE-ID carried on the RACH is the E-RNTI. The definition of UE-id type can be added using a reserved field in existing protocols, e.g. using 10 or 11 in table 2 below, identifying the E-RNTI type.

UE-id type field	UE-id type
UE-id type field	UE-id type	00	U-RNTI
01	C-RNTI	00	U-RNTI
01	C-RNTI	10	Retention
11	Retention	10	Retention

TABLE 2

2. If the E-DCH channel is selected to send the data, the data is sent to the network side by adopting the existing mode. The specific process is as follows:

the UE forms MAC-es/is PDU by the data to be sent through the MAC-es/is entity, gives corresponding information such as TSN, and then delivers the information to the MAC-e/i entity; and the MAC-E/i entity forms MAC es/is PDU, TSN and other information into MAC-E/i PDU which is sent to the base station through an air interface enhanced uplink physical channel (E-PUCH).

It should be noted that, when the UE performs uplink data transmission, the TSN used for E-DCH transmission and the TSN added in the RACH need to be allocated together. For example, first 2 packets of data are transmitted through MAC-i, then TSN is 0, 1, then 1 packet of data is transmitted through MAC-c, where TSN is 2, and then 2 packets of data are transmitted through MAC-i, and TSN is 3, 4.

Therefore, in the embodiment of the present invention, the TSN is introduced into the MAC PDU of the RACH channel on the UE side, so that the data transmitted through the RACH channel also includes the TSN. When the data of the same service is transmitted by using the E-DCH channel and the RACH channel in a crossed manner, the receiving end can reorder the data from the two channels together according to the TSN.

At the base station side, the processing of the RACH channel and the processing of the E-DCH channel are respectively the same as those in the prior art, specifically as follows:

processing an RACH channel, wherein a base station receives data on the PRACH channel from an air interface and sends the data to an RNC (radio network controller) through a corresponding bearer of the RACH at an Iub interface;

for the processing of the E-DCH channel, the air interface adopts the processing of a plurality of processes such as HARQ stop and the like, and can adopt a plurality of times of retransmission to carry and send the successfully received data to the MAC-es/is entity of the RNC through the Iub interface.

Fig. 7 is a schematic diagram of a mapping relationship between corresponding RNC-side MAC entities in the embodiment of the present invention:

in the prior art, for the processing of an RACH channel, an MAC-c entity of an RNC receives RACH data, analyzes an MAC-d PDU therein, and sends the analyzed MAC-d PDU to a corresponding MAC-d entity for processing; for the processing of the E-DCH channel, after the MAC-es/is entity of the RNC receives E-DCH data from the base station, reordering is carried out according to TSN sequence number information in the data, and the content of MAC-d PDU in the ordered data packet is sent to the corresponding MAC-d entity for processing.

In the embodiment of the invention, on the RNC side, the MAC-c entity receives the MAC PDU from the RACH channel, and the MAC-es/is entity directly receives the data from the E-DCH channel. The specific processes are respectively as follows:

the MAC-c entity receives the MAC PDU from the RACH channel, and judges whether the MAC PDU is in a new format or not according to TCTF in the MAC PDU:

if the new format is added, removing the TCTF field, and if the MAC-es entity is carried by the high layer, analyzing according to the format shown in FIG. 5; if the MAC-is entity is carried by the high layer, analyzing according to the format shown in the diagram action 6, searching the corresponding logical channel number according to the C/T information, and sending the analyzed MAC-es/isPDU to the MAC-es/is entity together with information such as data length, user information and the like;

if the format is not the new format, processing according to the prior art.

The MAC-es/is entity processes E-DCH data from the base station and RACH data content from the MAC-c entity uniformly, namely, performs uniform sequencing according to TSN therein.

Therefore, the method for high-speed downlink packet access scheduling in the embodiment of the invention can uniformly sequence the RACH channel data and the E-DCH channel data when the user transmits the uplink data in the enhanced CELLFACH state, and can effectively avoid the defect that the uplink data is wasted due to unnecessary retransmission in the prior art when the two transmission channels are used in a staggered manner for transmission.

The steps of a method described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

Fig. 8 is a schematic structural diagram of a system for high speed downlink packet access scheduling according to an embodiment of the present invention;

the system comprises user equipment 81, base stations 82 and an RNC 83. Wherein,

the user equipment 81 is used for forming MAC-es/isSDU by the data to be sent through the MAC-es/is entity, adding corresponding TSN to form MAC protocol data unit MAC-es/is PDU, and alternately selecting RACH channel and E-DCH channel to send data according to the uplink traffic;

the base station 82 is configured to receive data sent by the user equipment 81 through the RACH and the E-DCH, and send a protocol frame formed by the data to the RNC 83;

and the RNC83 is used for receiving the protocol frame and uniformly sequencing the MAC-es/is PDU in the protocol frame of the RACH and the protocol frame of the E-DCH.

Wherein the user equipment comprises: a media access control layer module and a transmission layer module. The media access control layer module is used for forming MAC-es/is SDU from data to be sent and adding corresponding transmission sequence number TSN to form MAC protocol data unit MAC-es/is PDU; and the transmission layer module is used for alternately selecting RACH and E-DCH to send data according to the uplink traffic. Wherein:

the media access control layer module is a MAC-es entity or a MAC-is entity.

The transport layer module includes:

The process of data processing and transmission between the entities can be understood by referring to the schematic diagram of the mapping relationship between the user-side MAC entities shown in fig. 4 and the foregoing description of the method embodiment of the present invention. And will not be described in detail herein.

It should be noted that, in the user equipment, an allocation module may be further provided, and is configured to allocate the TSN used when the RACH sends data and the TSN used when the E-DCH sends data in a unified manner. That is, the TSN required when composing the MAC protocol data unit MAC-es/isPDU is provided to the MAC-es entity or the MAC-is entity.

The radio network controller includes: a transmission layer module and a media access control layer module. The transmission layer module is used for receiving RACH protocol frames and E-DCH protocol frames from a base station; and the media access control layer module is used for uniformly sequencing the MAC-es/is PDU in the RACH protocol frame and the E-DCH protocol frame.

The transport layer module includes: a MAC-c entity corresponding to RACH, a MAC-es entity corresponding to E-DCH or a MAC-is entity. Wherein:

The process of data processing and transmission between the above entities can be understood by referring to the schematic diagram of the mapping relationship between the RNC-side MAC entities shown in fig. 7 and the description of the foregoing embodiment of the method of the present invention. And will not be described in detail herein.

When the system and the equipment for high-speed downlink packet access scheduling in the embodiment of the invention are used for transmitting uplink data by a user in the enhanced CELLFACH state, the RACH channel data and the E-DCH channel data are uniformly sequenced, and when two transmission channels are used in a staggered manner for transmission, the defect that the uplink data is wasted due to unnecessary retransmission in the prior art can be effectively avoided.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for high speed downlink packet access scheduling is characterized by comprising the following steps:

2. The method of claim 1, wherein the alternately selecting a Random Access Channel (RACH) and an enhanced dedicated channel (E-DCH) according to the uplink traffic to transmit data comprises:

3. The method of claim 2,

4. The method of claim 2, further comprising:

5. The method of claim 2, further comprising:

6. The method of claim 2, further comprising:

7. A user device, comprising: a media access control layer module and a transmission layer module;

8. The UE of claim 7, wherein the MAC layer module is a MAC-es entity or a MAC-is entity.

9. The UE of claim 7, wherein the transport layer module comprises:

10. The user equipment according to any one of claims 7 to 9, further comprising:

11. A radio network controller, comprising: a transmission layer module and a media access control layer module;

12. The rnc of claim 11 wherein the transport layer module comprises: a MAC-c entity corresponding to RACH, a MAC-es entity corresponding to E-DCH or a MAC-is entity;

13. A system for high speed downlink packet access scheduling, comprising: user equipment, a base station and a radio network controller;

14. The system according to claim 13, wherein the user equipment is a terminal according to any of claims 7 to 10.

15. The system according to claim 13, wherein the radio network controller is a radio network controller as claimed in claim 11 or 12.