WO2010060372A1

WO2010060372A1 - Implementation method and terminal for td_scdma_hsupa

Info

Publication number: WO2010060372A1
Application number: PCT/CN2009/075106
Authority: WO
Inventors: 陈丽萍
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-11-25
Filing date: 2009-11-24
Publication date: 2010-06-03
Also published as: CN101742673A

Abstract

An implementation method and terminal for TD_SCDMA_HSUPA are provided, said implementation method including : downlink processing in which decoding in the downlink E-AGCH can be implemented by a downlink channel decoding sub-system; and in which decoding in the E-HICH can be implemented by a digital signal processing module; and/or uplink processing in which the coding process in the HSUPA uplink E-DCH/E-RUCCH can be implemented by a HSUPA uplink transmission sub-system. The processing manner for both the TD-SCDMA_HSUPA uplink signal and the downlink channel decoding can be defined based on the functional architecture used for implementing TD-SCDMA_HSDPA, while TD-SCDMA_HSUPA functions can be implemented through a minor modification, without affecting the functions related to TD-SCDMA_HSDPA that have already been verified.

Description

TD-SCDMA - HSUPA implementation method and terminal

The present invention relates to the field of Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) communication, and in particular to a high-speed uplink packet access based on TD-SCDMA (TD-SCDMA_High Speed Uplink Packet Access) , TD-SCDMA - HSUPA or TD - HSUPA) implementation method and terminal. Background technique

The TD-SCDMA communication system is a third generation mobile communication system.

At present, for the TD-SCDMA communication system, most manufacturers have built a digital baseband (DBB) processing architecture with high speed downlink packet access (HSDPA). As a follow-up technology evolution, high-speed uplink packet access HSUPA will be a potential point for the current TD-SCDMA system.

Therefore, although the current implementation of the TD-SCDMA-HSDPA technology solution is no longer a difficult point, however, an effective implementation solution has not been proposed for TD-SCDMA-HSUPA. Summary of the invention

The present invention has been made in view of the problem of the prior art lacking the implementation scheme of TD-SCDMA-HSUPA. The main purpose of the present invention is to provide a TD-SCDMA-HSUPA based on the existing TD-SCDMA-HSDPA technical solution. Implementation method and terminal.

According to an aspect of the present invention, a method for implementing high-speed uplink packet access, that is, TD-SCDMA-HSUPA, based on synchronous time division code division multiple access is provided, which can be used for high speed downlink packets based on synchronous time division code division multiple access. TD HSUPA is implemented based on the physical architecture of the access TD-HSDPA. The implementation method of TD-SCDMA-HSUPA according to the present invention includes:

Downlink processing: The absolute access allowed channel of the downlink enhanced dedicated channel E-DCH is decoded by the downlink channel decoding subsystem, that is, the E-AGCH is decoded, and the hybrid automatic repeat request indication channel of the E-DCH is implemented by the digital signal processing module. That is, the decoding of E-HICH; and/or

Uplink processing: The HSUPA uplink transmission subsystem implements the coding process of the E-RUCCH, which is the random access channel of the HSUPA uplink E-DCH/E-DCH.

The downlink processing may further include: the digital signal processing module reporting the decoding result of the E-HICH to the upper layer.

The uplink processing may further include: implementing coding processing and transmission of the HSUPA service through the HSUPA uplink transmission subsystem.

Optionally, the uplink processing may further include: performing coding processing and transmission of a common service by using a common uplink sending subsystem.

According to another aspect of the present invention, there is provided a terminal operable to implement TD-SCDMA-HSUPA based on a physical architecture of TD-HSDPA.

The terminal according to the embodiment includes: a downlink channel decoding subsystem, configured to implement decoding of an absolute enhanced access channel of the downlink enhanced dedicated channel, that is, E-DCH, that is, E-AGCH; and a digital signal processing module, configured to implement downlink E -DCH hybrid automatic repeat request indication channel, ie, E-HICH decoding; HSUPA uplink transmission subsystem, for implementing uplink E-DCH and E-DCH random access channel, that is, E-RUCCH coding processing.

The terminal may further include: a normal uplink sending subsystem, configured to implement coding processing and transmission of a common service.

Preferably, the terminal may further comprise: a joint detection subsystem, configured to perform chip-level descrambling and despreading processing on the baseband signal, and provide the jointly detected signal to the downlink channel decoding subsystem.

With the aid of the invention, the functional architecture based on the implementation of TD-SCDMA-HSDPA is further defined TD-SCDMA—HSUPA's uplink service processing mode and downlink channel decoding processing method realize the TD-SCDMA-HSUPA function with only minor modifications, which fills the gap in the related technology and does not affect the verified TD-SCDMA - HSDPA related functions. DRAWINGS

1 is a block diagram of a terminal implementing TD-SCDMA-HSUPA in accordance with an embodiment of the apparatus of the present invention;

2 is a schematic diagram of a downlink processing process performed by a terminal implementing TD-SCDMA-HSUPA according to an embodiment of the apparatus of the present invention;

FIG. 3 is a schematic diagram of a process for performing uplink processing performed by a terminal implementing TD-SCDMA-HSUPA according to an embodiment of the apparatus of the present invention. detailed description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Considering the lack of the TD-SCDMA-HSUPA technical solution in the prior art, the present invention further defines the uplink service processing mode of TD-SCDMA-HSUPA and the processing method of downlink channel decoding based on the TD-SCDMA-HSDPA system architecture. Thus, the TD-SCDMA-HSUPA function is effectively realized, and the gap in the related technology is filled.

In this embodiment, a terminal is provided, which is capable of implementing TD-SCDMA-HSUPA on the basis of existing HSDPA.

Fig. 1 schematically shows the structure of a terminal according to this embodiment.

As shown in FIG. 1, the terminal according to this embodiment includes: TD-SCDMA-HSUPA uplink transmission subsystem (HSUPA Uplink Transmit, HUTR), that is, TD-HUTR 10; TD-SCDMA downlink channel decoding (Downlink Channel Decoding) , DCC) subsystem, ie TD-DCC 20; Digital Signal Processing (DSP) module 30; TD-SCDMA General Service Uplink Transmit (GUTR), ie TD-GUTR 40; Joint Detection (JD) subsystem, namely TD_RX 50.

The DSP module 30 can be used to control uplink and downlink data processing tasks and set related parameters, so the DSP module 30 is connected to other modules.

Further, the DSP module 30 is connected to a Double Port Random Access Memory (DPRAM), that is, communication between the DSP module 30 and the ARM (Advanced RISC Machine) processor 70 is realized by sharing the DPRAM 60. The ARM processor 70 is used to implement an access layer (AS) and a non-access stratum (NAS) protocol. The ARM processor is a Reduced Instruction Set Computer (RISC) processor.

In addition, the TD-HUTR 10 can be connected to the shared DPRAM 60 for implementing processing and transmission of HSUPA upstream data. The shared DPRAM 60 is a shared storage space between the ARM processor 70 and the DSP module 30, and can be used for storing high-level storage. a transport block delivered by the network side;

The TD DCC20 can be used to implement decoding of an E-DCH Absolute Grant Channel (E-AGCH) for an enhanced dedicated channel;

The TD GUTR40 is connected to the shared DPRAM 60, and can be used to store transport blocks sent by the upper layer and used for uplink processing of common services;

The TD-RX 50 is connected to the TD-DCC 20 for joint detection of the baseband signals, and provides the jointly detected signals to the TD-DCC 20 for channel decoding.

Specifically, the TD-HUTR 10 implements an E-DCH Random Access Uplink Control Channel (E-RUCCH) for the TD-SCDMA-HSUPA Enhanced Dedicated Channel/E-DCH (Enhanced Dedicated Channel)/Enhanced Dedicated Channel. The processing provides support for uplink data processing of TD-SCDMA-HSUPA services.

For a specific decoding step when the TD-DCC 20 performs channel decoding of the E-AGCH (E-DCH Absolute Grant Channel), refer to 3GPP protocol 25.222. The decoding process of the E-AGCH has eight steps, and the decoding process is basically the same as the decoding process of the ordinary service. Pass on The decoding of the E-AGCH can obtain the scheduling information carried on the E-AGCH, where 2 bits are HICH indications, which are used to indicate which E-HICH the Hybrid Automatic Repeat reQuest (HARQ) response indication indicates. Up-transfer (typically, there can be 4 E-HICHs for each user).

The specific decoding step when the DSP module 30 performs the E-HCH (E-DCH HARQ Acknowledgement Indicator Channel) decoding can be referred to the 3GPP protocol 25.222. The process of decoding the E-HICH includes two steps, and the E-HICH is decoded. You can get the correct response message (ACK) or error response message (NACK), and then report it to the upper layer.

Fig. 2 is a diagram showing a process of performing downlink processing by a terminal implementing TD-HSUPA according to the present embodiment.

As shown in Figure 2, in the downlink processing of TD-HSUPA, the hardware accelerator is used to perform AGCH reception and processing, including: receive filtering, joint detection, and TD-DCC decoding of AGCH. Then, HICH channel reception and processing are performed according to the HICH indication: receive filtering, joint detection, and output 88 bit HICH data for HICH decoding.

The DSP module can obtain the HICH channel parameters according to the HICH indication, and the processing of the DSP module involves decoding the HICH and reporting to the upper layer.

On the other hand, the uplink processing of TD-HSUPA needs to consider the E-DCH and E-RUCCH and E-DCH Access Uplink Control Channel (E-UCCH) channels on the basis of the original TD-HSDPA architecture. Coding support.

The encoding of the E-UCCH may use the encoding method specified by the 3GPP protocol 25.222, including two steps, and the specific encoding process is the same as the encoding process of the common service; the encoding of the E-RUCCH may use the encoding specified by the 3GPP protocol 25.222. The method includes 6 steps, and the encoding process is the same as the encoding process of the Packet Random Access Channel (PRACH); the encoding of the E-DCH can use the encoding method specified by the 3GPP protocol 25.222, specifically including 8 steps, from Add Cyclic Redundancy Check (CRC) to the channel The code is the same as the normal service, and then the second interleaving is different from the rate matching and modulation methods, and the HARQ and constellation rearrangement modules are added.

Fig. 3 is a diagram showing a process of performing uplink processing by a terminal implementing TD-HSUPA according to the present embodiment.

As shown in Figure 3, the uplink processing of TD-HSUPA is divided into two ways:

(1) The TD_GUCDMA subsystem based on TD-SCDMA processes the uplink data of the normal service, that is, the uplink channel coding (UPC) of the shared information indication channel (HS-SICH) of the PRACH/DCH and the high speed downlink shared channel (Uplink Channel Coding, UCC) ( TD UCC) and launch processing;

(2) The TD-SCDMA-based TD HUTR subsystem processes the uplink data of the TD-SCDMA HSUPA service, that is, performs uplink channel coding on the E-RUCCH/E-UCCH/E-DCH channel (TD-SCDMA HSUPA Uplink Channel Coding, TD) — HUCC ) and launch processing.

The uplink processing modules TD HUTR and TD_GUTR are both connected to the DPRAM, wherein the TD-HUTR subsystem includes TD HUCC and TD-HTX, that is, after the HSUPA data is uplink coded by the TD HUCC and then shaped and filtered by the TD-HTX time slot. The TD GUTR includes TD-UCC and TD-TX, that is, the normal service data is transmitted in the normal transmission time slot via the normal transmission channel (TX) after the TD-UCC uplink coding.

In order to realize the construction of the uplink processing branch of TD-HUTR, the following processing methods can be used: First, inherit the TD-GUTR internal module, then add HARQ and constellation rearrangement two module designs, and then achieve the function by modifying the RAM design and module interface. support.

Through the above terminals, the TD-SCDMA-HSUPA function can be effectively realized without affecting the verified TD-SCDMA-HSDPA function, and the gap in the related technology can be filled.

In this embodiment, a method for implementing TD-SCDMA-HSUPA is provided, which can be used to implement TD-based on a high-speed downlink packet access based on synchronous time division code division multiple access (TD-SCDMA HSDPA). SCDMA HSUPA. The downlink processing and/or the uplink processing in the implementation method of the TD-SCDMA-HSUPA according to the present embodiment may be implemented as follows:

Downlink processing: decoding the absolute access allowed channel (E-AGCH) of the enhanced dedicated channel by using the downlink channel decoding subsystem, and decoding the E-HICH by digital signal processing (DSP) and reporting the decoding result;

Uplink processing: TD-SCDMA-HSUPA uplink transmission subsystem implements TD-SCDMA-HSUPA enhanced dedicated channel/enhanced dedicated channel random access channel (E-DCH/E-RUCCH) encoding processing, and uplink-encoded coded information.

In addition, in order to implement uplink processing of common services other than the HSUPA uplink service, in the uplink processing, for the normal service, the uplink processing of the normal service and the uplink transmission can be implemented by the common uplink transmission subsystem.

Preferably, based on the terminal shown in FIG. 1, the process of performing downlink decoding processing according to the implementation method of the TD-SCDMA-HSUPA according to the embodiment can be seen in FIG. 2, and the process of performing uplink coding and transmission processing can be seen in FIG. 2 and the processing steps in FIG. 3 have been described above and will not be repeated here.

In summary, the present invention is based on the system architecture of the TD-SCDMA-HSDPA function, further defines the uplink service processing mode of the TD-SCDMA-HSUPA and the processing method of the downlink channel decoding, inheriting the existing verification module, only by comparing The small modification realizes the TD-SCDMA-HSUPA function, which fills the gap in the related technology; and does not affect the currently verified TD-SCDMA-HSDPA related functions, fully meets the market demand, and improves the mobile phone currently being developed. The competitive advantage of baseband chips.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A method for implementing high-speed uplink packet access TD-SCDMA HSUPA based on synchronous time division code division multiple access, which is used for implementing TD based on the physical architecture of high speed downlink packet access TD HSDPA based on synchronous time division code division multiple access - HSUPA, characterized in that the method comprises:

Downlink processing: The absolute access of the downlink enhanced dedicated channel E-DCH is enabled by the downlink channel decoding subsystem to decode the channel E-AGCH, and the hybrid automatic repeat request indication channel E of the E-DCH is implemented by the digital signal processing module. - decoding of HICH; and / or

Uplink processing: The encoding process of the E-RUCCH of the HSUPA uplink E-DCH/E-DCH random access channel is implemented by the HSUPA uplink transmission subsystem.

The method according to claim 1, wherein the downlink processing further comprises: the digital signal processing module reporting a decoding result of the E-HICH to a higher layer.

The method according to claim 1, wherein the uplink processing further comprises: performing coding processing and transmission of the HSUPA service by using the HSUPA uplink sending subsystem.

The method according to claim 1 or 3, wherein the uplink processing further comprises: performing coding processing and transmission of a common service by using a normal uplink transmission subsystem.

A terminal for implementing high-speed uplink packet access based on synchronous time division code division multiple access (TD-SCDMA)-HSUPA based on a physical architecture of high-speed downlink packet access TD HSDPA based on synchronous time division code division multiple access, The terminal is characterized in that: the terminal comprises:

a downlink channel decoding subsystem, configured to implement a downlink enhanced dedicated channel, that is, an E-DCH absolute access permitting channel, that is, an E-AGCH decoding;

a digital signal processing module, configured to implement a hybrid automatic repeat request indication channel of the downlink E-DCH, that is, decoding of the E-HICH;

The HSUPA uplink transmission subsystem is configured to implement coding processing of the random access channel E-RUCCH of the uplink E-DCH and the E-DCH.

The terminal according to claim 5, wherein the terminal further comprises: a normal uplink sending subsystem, configured to implement encoding processing and transmission of a common service.

The terminal according to claim 5, wherein the terminal further comprises: a joint detection subsystem, configured to perform chip-level descrambling and despreading processing on the baseband signal, and provide the jointly detected signal to The downlink channel decoding subsystem.