CN101170725B

CN101170725B - Data receiving, transmitting method and device

Info

Publication number: CN101170725B
Application number: CN2006101507199A
Authority: CN
Inventors: 陈斌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-10-24
Filing date: 2006-10-24
Publication date: 2010-06-09
Anticipated expiration: 2026-10-24
Also published as: CN101170725A

Abstract

The invention discloses a data reception method for user equipment (UE) in a state of cell forward access channel (CELL_FACH), which comprises: the UE is set with reception mode and judgment condition of the UE; during the data reception process, the UE receives data based on the preset reception mode and judgment condition. The invention also discloses a data transmission method for UE in CELL_FACH state, a data reception device for UE in CELL_FACH state, and a data transmission device for UE in CELL_FACH state. The invention realizes the politic continuous transmission in non-continuous transmission state. Therefore, the invention can reduce the time of wireless channel reception of UE in CELL_FACH state, reduce the time delay of data transmission, and reduce the battery consumption. Additionally, the invention can accelerate the downlink data transmission speed in non-continuous transmission state and the retransmission speed of uplink RLC packet.

Description

Data receiving and transmitting method and data receiving and transmitting device

Technical Field

The invention relates to the technical field of data receiving and data sending in mobile communication, in particular to a data receiving method and a data receiving device of UE (user equipment) in a CELL forward access channel (CELL _ FACH) state, and a data sending method and a data sending device of a network side at the time.

Background

A third generation partnership project (3GPP) system is divided into three parts, namely, a User Equipment (UE), a universal mobile telecommunications system Terrestrial Radio access Network (UTRAN), and a Core Network (CN). The interface between the UE and the UTRAN is the Uu interface, which is mainly used to provide the function of the radio access user. The protocol stack of the Uu interface includes Radio Resource Control (RRC), Radio Link Control (RLC), Medium Access Control (MAC), and physical layer protocols. The RRC protocol provides a signaling plane connection of the Uu interface for transmitting control signaling between the UTRAN and the UE. When there is RRC signaling connection between the UE and the UTRAN, the UE is called in RRC connected mode, and at this time, the UE will be in one of 4 RRC states, where the 4 RRC states are UTRAN registration area _ paging channel (URA _ PCH), CELL _ paging channel (CELL _ PCH), CELL _ forward access channel (CELL _ FACH), and CELL _ dedicated channel (CELL _ DCH), respectively. These 4 states are switchable, and various switching situations are shown in fig. 1.

When the UE is in different RRC connected states, there are different processing manners, which are described in detail as follows:

when the UE is in CELL _ DCH state: the UE has a Dedicated Control Channel (DCCH) and a Dedicated Traffic Channel (DTCH), and communicates the state of the communication process by using a dedicated channel or a shared channel; the dedicated channel is a radio resource that can only be used by the UE.

When the UE is in CELL _ FACH state: the UE has a DCCH or a DTCH at the same time, can receive signaling or data on the FACH and send the signaling or data on a Random Access Channel (RACH), does not need to allocate a dedicated channel and transfers the state of a message on a common FACH/RACH channel; since the dedicated channel is not occupied, wireless resources can be saved, and meanwhile, the UE can also save electricity without continuously transmitting and receiving the dedicated channel.

When the UE is in CELL _ PCH state: the UE cannot use DCCH and DTCH, cannot receive and transmit data, and can only monitor the state of paging indication messages on a Paging Indication Channel (PICH) in the downlink direction; only CELL Update (CELL Update) messages can be sent to the Radio Network Controller (RNC); registering information with the RNC when the cell changes; since the PICH is non-continuously listening, the UE in this state is more power efficient than in the CELL _ FACH state.

When the UE is in URA _ PCH state: the UE cannot use DCCH and DTCH, cannot receive and transmit data, and only monitors the state of paging indication messages on a PICH channel in the downlink direction; only URA Update (URA Update) or Cell Update messages can be sent to the RNC; registering with the RNC when the UTRAN registration area is changed; since the UTRAN registration area is much wider than the CELL, the UE in this state is more power efficient than CELL _ PCH.

When the UE in the CELL _ PCH and URA _ PCH states needs to send or receive data, the state of the UE needs to be converted into CELL _ FACH or CELL _ DCH. Such state transition may be network initiated or UE initiated.

In 3GPP, transport channels are mapped to physical channels for transmission. Data of a Transport channel is mapped to a physical channel in units of 1 10ms frames in units of Transport Block Set (TBS) and one Transmission Time Interval (TTI). Wherein the TBS is aggregated from a plurality of Transport Blocks (TBS).

The transmission channels are numbered and counted by a Connection Frame Number (CFN), and are mainly used for transmission channel synchronization between the UE and the UTRAN, for example, the transmission channels are specified to be activated and used on a certain CFN or to apply new transmission parameters, and the CFN is in units of 10 ms. For the PCH channel, the number space of its CFN is 0 to 4095; and for other transport channels, the CFN has a number space of 0 to 255.

The physical channels are numbered and counted by a Cell System Frame Number (SFN), and each Frame is transmitted to the UE by the UTRAN on a broadcast channel. The numbering space of SFN is 0 to 4095.

The CFN does not transmit over the air interface. However, both the UE and the UTRAN can calculate the CFN from the SFN through the correspondence between the CFN and the SFN.

The downlink common transport Channel FACH is mapped to a secondary common Control Physical Channel (S-CCPCH). The TTI of FACH is typically 20ms or 40 ms. Then one transmission of the FACH data TBS requires two consecutive SFN physical channel frames to transmit to the UE. The FACH is shared by all UEs in the whole cell, and scheduling of data transmission between UEs is performed at the RNC. The RNC determines UE and data to be transmitted on FACH, sends TBS, UE Identification (ID) and CFN number to be transmitted to Node B, which processes TBS including Cyclic Redundancy Code (CRC) check, channel coding, interweaving, etc, and finally maps to several physical frames of S-CCPCH to modulate spread spectrum and transmit. The number of physical frames of the S-CCPCH is determined by the length of TTI, which is equal to the TTI divided by 10ms, for example, the TTI is equal to 20ms, and the number of physical frames is 2. After receiving the S-CCPCH frame, the UE firstly demodulates each physical frame of 10ms, then combines a plurality of physical frames in one TTI to perform de-interleaving, decoding and the like according to the TTI of the FACH, finally obtains the TBS, and determines whether each TB in the TBS is transmitted correctly through CRC.

Since FACH is a common channel, the UE needs to determine whether the received FACH data belongs to itself. FACH data for one TTI is transmitted in TBs consisting of a plurality of TBs, each TB being a MAC frame including a MAC header. In the RNC, logical channels are mapped on the FACH Channel, including a Dedicated Control Channel (DCCH) for transmitting signaling, a Dedicated Traffic Channel (DTCH) for transmitting data, and a Common Control Channel (CCCH) for transmitting Common Control signaling, and the MAC frame header has a field indicating which logical Channel this TB belongs to. If the dedicated control channel and the dedicated service channel are mapped to the FACH, the MAC frame header contains the UE identification, so that the UE can judge whether the TB belongs to the UE from the UE identification.

To save power, UEs that have not data interaction for a long time are typically transitioned to the CELL _ PCH or URA _ PCH state. In the existing 3GPP protocol, when the UE is in the CELL _ PCH or URA _ PCH state, if the uplink data is to be sent to the network or the network needs to send the downlink data to the UE, the RRC state needs to be first switched to the CELL _ FACH or CELL _ DCH state through the CELL Update procedure, that is, the UE needs to be activated first. The signaling flow is shown in fig. 2, and includes the following steps:

step 101, when the UE is in the CELL _ PCH state, the network needs to send data or signaling to the UE, and needs to page the UE first, then the RNC sends a type 1 paging message to the UE.

Step 102, after receiving the paging message, the UE needs to send a CELL Update message to the RNC, and migrate its own state to CELL _ FACH.

Another situation is that the UE is in the CELL _ PCH state and needs to send uplink data, and needs to send a CELL Update message, and first transitions its state to CELL _ FACH. In this case, since the UE is actively sending data or signaling, the paging procedure of step 101 does not need to be performed.

Step 103, the UE sends a cell update message on the CCCH mapped to the RACH, where the message carries a cell update reason, namely "send uplink data" or "page response".

Step 104, after receiving the message, the RNC needs to keep the state of the UE in CELL _ FACH or migrate to CELL _ DCH according to the reason for CELL update, so that the UE can send and receive data. Whether to remain in CELL _ FACH or to transition to CELL _ DCH state needs to be decided according to Radio Resource Management (RRM) algorithms. In some algorithms, under the condition, the state of the UE is firstly converted into CELL _ FACH, then the adjustment is carried out according to the data flow of the UE, and if the flow is large, the adjustment is carried out to CELL _ DCH; some algorithms are decided according to the current use conditions of the dedicated resources and the common resources.

And 105, after the RNC determines that the RRC state information and other configuration information are reserved in the CELL _ FACH or transferred to the CELL _ DCH, the RNC sends a CELL update confirmation message and sends the RRC state information and other configuration information to the UE.

And step 106, after receiving the cell update confirmation message, the UE configures the RRC state according to the RRC state indicated by the RNC, and simultaneously sends a mobile information confirmation message for responding. Here, in addition to the mobile information confirmation message, other messages are also possible, such as a radio channel reconfiguration message and the like.

Step 107, the cell update procedure is ended, and the UE may interact data and signaling with the network.

The time delay of the above process is calculated as follows. Paging messages need to be sent at the paging time of the UE, and the paging time interval is generally around 600ms, so that on average, each paging message needs to wait for 300ms, and if the paging message fails to be received, retransmission needs to wait for 600 ms. CELL Update, CELL Update confirm, mobile information confirm or other message confirm, and the interaction of these 3 messages takes about 300 ms. Thus, adding up the above time, the delay of the whole process needs at least 600 ms.

From the above, it can be seen that to save power, the UE is put into CELL _ PCH or URA _ PCH state. However, when data needs to be transmitted and received, the data can be transmitted and received only by performing state conversion through a cell updating process. The delay of this process is very long. If a user has few data to be transmitted from time to time, the state needs to be continuously switched, namely, the user switches to CELL _ FACH/CELL _ DCH to CELL _ PCH/URA _ PCH after the data is sent, so that the time delay of data sending is very large, and the service experience of the user is reduced. For example, in the intercom service, both parties are not speaking for a long time and are shifted to the CELL _ PCH state, but only when speaking is started, it is necessary to wait for a long time to hear the response. And a lot of cell update signaling are transmitted in the air interface, thereby simultaneously causing the waste of air interface wireless resources and reducing the performance of the system.

To solve the above problems of the prior art, in an implementation, the UE may be always placed in CELL _ FACH or CELL _ DCH. But if in CELL _ DCH, a dedicated channel will need to be configured to the UE, and the number of dedicated channels is limited. If a UE has no data transmission for a long time and is in CELL _ DCH, it will result in a great waste of resources and reduce the capacity of the system to access the UE. Meanwhile, the UE needs to continuously transmit and receive the dedicated channel, which results in large battery consumption and also reduces user service experience.

In order to solve the disadvantage of the above technical solution of radio resource waste, in terms of implementation, the UE with a small data traffic can be switched to the CELL _ FACH state. In this state, the UE has no dedicated channel, and all data and signaling are transmitted and received on the uplink FACH and the downlink RACH. When data is transmitted and received, the common channel is utilized, and when data is not transmitted and received, the common channel can be used by other UE, so that the waste of wireless resources is avoided. However, the UE needs to continuously receive the TBSs of all TTIs on the FACH channel and needs to analyze the MAC headers of all TBS on the TBS to determine whether the TB belongs to itself. If the data volume of the UE is very small, and the UE needs to continuously receive and analyze all data on the FACH, the battery consumption of the UE is also very large, and the battery is wasted.

Further, in order to solve the disadvantage of large battery consumption in the technical scheme, a method for the UE to perform discontinuous reception on the S-CCPCH under CELL _ FACH has recently been proposed, which is not referred to as the discontinuous reception state of CELL _ FACH. However, in this method, when the UTRAN has more data to transmit and the UE can only receive on some designated discontinuous frames, the transmission delay of the UTRAN is very large. Meanwhile, if the UE transmits Acknowledged Mode (AM) RLC data, the UTRAN receives an error, and needs to transmit a NACK message to request retransmission, it needs to wait for the arrival of a designated discontinuous frame, increasing the time delay of RLC data retransmission.

Disclosure of Invention

In view of this, the present invention provides a data receiving method for UE in CELL _ FACH state, so as to reduce the time delay of data transmission. Another object of the present invention is to provide a data receiving apparatus for a UE in a CELL _ FACH state. Still another objective of the present invention is to provide a data transmission method for a UE in CELL _ FACH state. Still another object of the present invention is to provide a data transmission apparatus on a network side for a UE in a CELL _ FACH state.

The invention provides a data receiving method of UE in CELL _ FACH state, the method sets the receiving mode and judging condition of the UE in the UE; the judgment conditions are as follows: if the previous frame is the received frame and the reception is erroneous, the current frame is the received frame; or, if the previous frame is the received frame and the current frame and the previous frame belong to the same transmission time interval TTI, the current frame is the received frame; or, if the previous frame is the received frame and the previous frame is received correctly and contains the data of the UE, the current frame is the received frame; or, if the UE sends data or signaling that requires network side response and does not receive the response, the current frame is the received frame;

and in the data receiving process, the UE receives data according to the receiving mode and the judgment condition.

The invention also provides a data transmission method of the network side equipment when the UE is in the CELL _ FACH state, and the method sets the receiving mode and the judgment condition of the UE in the network side equipment; and in the data sending process, the network side equipment sends data according to the receiving mode and the judgment condition of the UE.

The invention also provides a data receiving device of the UE in the CELL _ FACH state, which comprises:

a receiving judger for judging whether the current frame not belonging to the UE needs to be received according to the receiving mode and the judging condition and obtaining the judging result that the receiving is needed or not; the judgment conditions are as follows: if the previous frame is the received frame and the reception is erroneous, the current frame is the received frame; or, if the previous frame is the received frame and the current frame and the previous frame belong to the same transmission time interval TTI, the current frame is the received frame; or, if the previous frame is the received frame and the previous frame is received correctly and contains the data of the UE, the current frame is the received frame; or, if the UE sends data or signaling that requires network side response and does not receive the response, the current frame is the received frame;

and the data receiving processor is used for receiving and processing the current frame when the judgment result is that the current frame needs to be received.

The invention also provides a data transmission device of the network side of the UE in the CELL _ FACH state, which comprises:

a sending judger for judging whether the current frame not belonging to the UE needs to be sent to the UE according to the receiving mode and the judging condition of the UE and obtaining the judging result that the current frame needs to be sent or does not need to be sent;

and the data scheduling transmitter is used for scheduling wireless resources to transmit the current frame to the UE when the judgment result is that the wireless resources need to be transmitted to the UE.

It can be seen from the above solution that, since the present invention sets the receiving mode and the determining condition of the UE in advance, then determines whether the current frame not belonging to the UE in the receiving mode needs to be received according to the determining condition in the data receiving process, and when the current frame needs to be received, the UE receives and processes the current frame. That is, the present invention performs a strategic continuous transmission in a discontinuous transmission state. Therefore, the invention enables the UE in the CELL _ FACH state to reduce the time for receiving the wireless channel, reduce the time delay of data transmission and reduce the consumption of batteries. Meanwhile, the transmission speed of downlink data in a discontinuous reception state and the retransmission speed of uplink RLC messages can be increased. In addition, under certain conditions, for example, when the data traffic of the UE is sparse, the UE may be placed in the CELL _ FACH state in the discontinuous reception mode, so as to avoid moving the UE to the CELL _ PCH or the URA _ PCH, which may avoid the time delay and the consumption of radio resources caused by performing the state transition. Thus, the invention also improves the performance and capacity of the mobile communication system.

Drawings

FIG. 1 is a diagram illustrating an RRC connected state of a UE in the prior art;

FIG. 2 is a diagram illustrating an activation procedure of a UE in a CELL _ PCH or URA _ PCH state according to the prior art;

FIG. 3 is a diagram illustrating a reception state of a UE in a CELL _ FACH state;

FIG. 4 is a schematic diagram of a state-based data receiving device;

fig. 5 is a flow chart illustrating a data receiving method based on a transmission channel;

fig. 6 is a flowchart illustrating a data receiving method based on a physical channel;

FIG. 7 is a schematic diagram of a data receiving apparatus based on condition determination;

FIG. 8 is a diagram illustrating state-based transmission in an RNC;

FIG. 9 is a schematic diagram of a state-based data transmission device;

FIG. 10 is a flow chart illustrating a data transmission method based on conditional judgment;

fig. 11 is a schematic diagram of a data transmission apparatus in an RNC based on condition determination.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.

The technical key point of the embodiment of the invention is that when the UE is in a CELL _ FACH state, the data on a wireless channel is received and analyzed continuously in a discontinuous way according to a certain mode. In the following description, the term "data" refers to all information transmitted over a wireless channel, including traffic data, signaling of various protocol layers, status information, and the like. Meanwhile, the RNC transmits downlink data to the UE discontinuously and discontinuously on the wireless channel according to the same mode. The mode may be predefined by a protocol, or configured to the UE by the UTRAN according to the data traffic of the UE and other policies, or dynamically adjusted by the UE itself. The discontinuous reception mode may be set according to a CFN of a transport channel, or according to an SFN of a physical channel, or according to a TTI of the transport channel, or according to an Identity of the UE, such as an International Mobile Subscriber Identity (IMSI), a UTRAN-Radio Network Temporary Identity (U-RNTI), a Cell Radio Network Temporary Identity (C-RNTI), and the like. The wireless channel comprises a downlink transmission channel FACH, a Downlink Shared Channel (DSCH) or other downlink transmission channels applied to CELL _ FACH, and downlink physical channels comprising S-CCPCH, PDSCH or other downlink physical channels applied to CELL _ FACH.

The following describes a setting and determination method of the discontinuous reception mode. The setting of the discontinuous reception mode is to set a range of the UE performing the discontinuous reception mode in the CELL _ FACH, and may be to set a frame number of the UE that belongs to the discontinuous reception mode when the UE is in the discontinuous reception mode, or may set a frame number that the UE does not need to receive. The judging method is to judge whether the frame number on the wireless channel belongs to the setting range of the discontinuous receiving mode.

The method comprises the following steps: the CFN of the transport channel is used for setting and judging.

When the CFN is used for setting, there may be a plurality of setting methods. For example, a cycle period P, consecutive frame numbers N, and an offset S are set. Then the UE uses CFN to make a decision, and from CFN modulo P equals S, the consecutive N frames all belong to the setting range of the discontinuous reception mode. P, N, S is a positive integer, P and N cannot be greater than 255, and N < P, if N ═ P is received continuously.

Also for example, in a lattice manner. The number space of the CFN is 0-255. The discontinuous reception mode may be a specific received CFN number, for example, frames of x1, x2, x3,. and xn are set as the received frame, and the UE determines whether the current CFN belongs to the TTI to which the specified CFN belongs, which indicates that the current CFN belongs to the setting range of the discontinuous reception mode. Wherein x1, x2, x3,. and xn are integers.

There are many other methods besides the above examples, and the present invention is not limited to the specific methods described above.

The second method comprises the following steps: the SFN of the physical channel is utilized for setting and judging.

With this setting method, the specific setting and determination method is the same as that of the first method, except that SFN is used instead of CFN in the first method, and a periodic method, a dot matrix method, etc. can be used as well. However, since the number space of the SFN is 0 to 4095, the UE may have a larger and more flexible reception interval.

The third method comprises the following steps: the TTI of FACH is utilized for setting and judging.

Since the TTI of FACH is an integer multiple of 10ms, we define a positive integer M equal to TTI divided by 10 ms. If TTI equals 20ms, then M equals 2; TTI equals 40ms, M equals 4, and so on. It may be set that when a quotient of a frame number (which may be a CFN of a transport channel or an SFN of a physical channel) divided by M belongs to X and a remainder belongs to Y, the frame belongs to a set range of the discontinuous reception mode. Wherein, X and Y are preset, X is a set of positive integers { X1, X2.. xn }, and Y is also a set of positive integers { Y1, Y2.. yn }.

The method four comprises the following steps: the identity of the UE is utilized for setup and determination.

The UE in CELL _ FACH has a plurality of identities including IMSI, U-RNTI, C-RNTI and the like, and U-RNTI is taken as an example for description, but other identities can be used for realizing the embodiment of the invention. Setting a positive integer parameter set D of discontinuous reception in the UE as { D1, D2.. dn }, if the quotient of the U-RNTI divided by the frame number belongs to the parameter set D, indicating that the frame number belongs to the set range of the discontinuous reception mode.

There are other methods for setting and determining the discontinuous reception mode and the UE, which are not described herein, and embodiments of the present invention are not limited to the above methods.

The above-described method for setting and determining the discontinuous reception mode of the UE in CELL _ FACH will next describe how the setting range of the discontinuous reception mode is configured to the UE and UTRAN.

Specifically, the following method can be adopted: compiling a program into a fixed mode in the UE or the RNC at the network side according to a predetermined convention, and storing the fixed mode in a program memory of the UE or the RNC; UTRAN obtains the configuration by obtaining the command of the configuration management module; the UTRAN calculates in real time through an algorithm; configuring a non-reception mode to the UE by means of UTRAN notification; the UE or the network side equipment receives an external configuration command, such as input of a human-computer interface, IP network downloading and the like, and analyzes the configuration command to obtain the setting of a receiving mode; the manner of notification by the UE configures the non-reception mode to the UTRAN. By the method, the UE and the network side equipment acquire the setting of the receiving mode and apply the setting to the discontinuous receiving judgment.

An embodiment is provided below as an example of a setting in which the UTRAN performs algorithm calculation and notifies the UE of the discontinuous reception mode.

The UTRAN makes a decision through channel parameters such as the traffic of the UE, the load on the radio channel, etc., or makes a decision through external configuration input, decides the setting range of the discontinuous reception mode of the UE, and notifies the setting range of the discontinuous reception mode to the UE. The notification may be performed by means of RRC signaling, where the RRC signaling includes radio bearer configuration, radio bearer reconfiguration, transport channel reconfiguration, RRC connection establishment, or other messages, and may also be performed by using a special frame of the RLC or MAC layer. And the UE receives the configuration information of the discontinuous reception mode sent by the RNC, analyzes the setting range of the discontinuous reception mode and is used for judging the discontinuous reception. It should be noted that the configuration method of the embodiment of the present invention is not limited thereto.

The following describes a data receiving method of discontinuous reception in an embodiment of the present invention.

The key of the embodiment of the invention is that the UE under CELL _ FACH receives the data on the wireless channel discontinuously. In particular, there are many ways to implement the method. Two examples are provided in the embodiments of the present invention, one is a discontinuous data receiving method based on a state; the other is a discontinuous data receiving method based on condition judgment. Meanwhile, the embodiment of the invention also provides a data receiving device for realizing the two methods. Embodiments of the invention are not limited to these two methods and apparatuses.

The following describes a data receiving method based on discontinuous reception of a state.

In the present embodiment, a UE in CELL _ FACH state has a current state of a reception state and a non-reception state. When in the receiving state, the UE receives and processes data; when in the non-reception state, the UE stops receiving data.

As shown in fig. 3, when the UE is in the CELL _ FACH state, there are two states, one is a reception state and the other is a non-reception state. When in a receiving state, the UE receives data on a radio channel; while in the non-receiving state, the UE stops receiving data on the radio channel. The UE receives data, which may be physical channel frames at the physical layer, or transport channel data at the MAC layer, or other forms of reception; the UE stops receiving data, which may be the physical layer stopping receiving physical frames, or the MAC layer stopping receiving transport channel frames, or other forms of stopping receiving.

The transition between the receive state and the non-receive state is condition driven. For example, at the time of the reception state, if the transition condition B is satisfied, the transition is made to the non-reception state; in the non-reception state, if the transition condition a is satisfied, the state transitions to the reception state.

In addition, when the UE is initialized, the UE may be in a receiving state or a non-receiving state, which does not affect the implementation of the embodiment of the present invention.

The above-mentioned transition condition a for transitioning from the non-reception state to the reception state includes the following conditions:

1) the condition a is established if a reception frame number belonging to the set range of the discontinuous reception mode arrives, wherein the setting of the discontinuous reception mode is as described above.

2) If the UE sends a data requiring a response from the UTRAN and the response has not been received, then condition a holds;

3) otherwise condition a does not hold.

The above-mentioned transition condition B for transition from the reception state to the non-reception state includes the following conditions:

1) if the condition A is not satisfied, the currently received data is correctly received and analyzed, and the data does not belong to the UE, the condition B is satisfied;

2) otherwise condition B does not hold.

Fig. 4 shows a discontinuous data receiving apparatus for implementing the above-described state-based reception. Referring to fig. 4, the discontinuous data reception apparatus includes a reception determiner, a state memory storing a current state of the UE, and a data reception processor. The condition according to the state transition may further include a reception mode setter, a data transmitter, and the like.

The receiving mode setter inputs the discontinuous receiving mode into the receiving judger, and the receiving judger can be the discontinuous receiving mode obtained by information coding, RNC configuration information decoding and protocol program compiling through the human-computer interface, and then the receiving judger judges the state conversion by using the discontinuous receiving mode.

The data transmitter inputs information on whether to transmit data requiring response and whether to wait for data retransmission into the reception determiner, and the reception determiner uses it to make a state transition determination.

When the receiving judger judges the state conversion, the current state is required to be acquired from the state memory, namely the input of the current state is acquired from the state memory; after the state is switched, the updated state needs to be output to the state memory to replace the old state therein.

The data receiving processor inputs the information of whether the currently received data is correctly received and analyzed and whether the currently received data belongs to the UE into the receiving judger, and the receiving judger uses the information to judge the state transition.

The data receiving processor acquires the current state from the state memory, is used for judging whether to perform receiving operation or not, and performs data receiving operation if yes.

The discontinuous reception method based on the condition judgment is described below.

And the UE judges whether the current frame belongs to the frame which should be received, if so, the current frame is received, otherwise, the current frame is not received. The embodiment of the invention also provides a method for judging whether the current frame is the received frame. Specifically, the embodiment of the present invention provides two examples, one is discontinuous reception based on a transport channel, and the other is discontinuous reception based on a physical channel. The transport channel is described by way of example as a FACH, and the physical channel is described by way of example as an S-CCPCH channel. It is clear that the invention is not limited to these two channels.

Fig. 5 illustrates a discontinuous reception method based on a transmission channel. Referring to fig. 5, the transport channel-based discontinuous reception method of the UE in the CELL _ FACH state is as follows:

in step 201, the UE continuously receives physical channel frames.

In step 202, the UE determines whether the current frame belongs to the received frame, and the determination method will be described later. If the frame is not the frame that should be received, step 203 is executed, otherwise step 204 is executed.

In step 203, in case the frame is not the received frame, the frame is not received, i.e. discarded, and then step 201 is executed to continue receiving the physical channel frame.

If the frame is the received frame, the frame of the transmission channel is constructed and analyzed, and the subsequent processing is performed, step 204. Then, the process goes to step 201 to continue receiving physical channel frames.

In the above flow, the UE may only make a determination on the processing of the transport channel without constructing and analyzing frames of all transport channels, and the processing procedure is very simple.

Fig. 6 shows a discontinuous reception method based on a physical channel, and referring to fig. 6, the discontinuous reception method based on the physical channel is as follows:

in step 301, the UE determines whether the current frame belongs to the received frame, and the determination method will be described below. If the frame is not the frame that should be received, step 302 is executed, otherwise step 303 is executed.

Step 302, if not belonging to the received frame, the current frame number is updated, and step 301 is skipped to prepare for judging the next frame.

If the frame is the received frame, a physical channel frame is received, step 303.

Step 304, the frame of the transmission channel is constructed and analyzed, and the subsequent processing is carried out. Then, the process goes to step 301 to continue the judgment. The method can perform discontinuous reception on the physical channel, thereby reducing battery consumption of the UE.

The judgment method in the above-described step 202 and step 301 is described below. The method comprises the following steps:

1) if the current frame number belongs to the set range of the non-receiving mode, the current frame is the received frame;

2) if the previous frame of the current frame is the received frame and the frame is received with errors, such as physical frame errors, transport channel frame parsing errors, etc., the current frame is the received frame;

3) if the previous frame of the current frame is the received frame and the current frame and the previous frame belong to the same transmission channel TTI range, the current frame is the received frame;

4) if the previous frame of the current frame is the received frame, the current frame belongs to the first frame of the transmission channel TTI, and the TB block belonging to the UE exists in the TB block of the transmission channel in the last TTI of the TTI to which the current frame belongs, the current frame is the received frame;

5) if the UE sends a data to be responded, but has not yet obtained a response, the current frame is the received frame, and the response may be data, signaling, or protocol information, etc.;

6) otherwise the current frame is not the received frame.

Fig. 7 shows an apparatus corresponding to the above-described discontinuous reception method based on the condition judgment. Referring to fig. 7, the discontinuous reception apparatus based on the condition judgment includes a reception mode setter, a data transmitter, a reception judger, a data reception processor, and the like.

Wherein, the receiving mode setter is mainly used for inputting the discontinuous receiving mode into the receiving judger. The receiving mode setter can be a discontinuous receiving mode obtained by information coding obtained through a human-computer interface, RNC configuration information decoding and protocol program compiling.

The data transmitter is mainly used for inputting information whether to transmit data requiring response or not and whether to wait for data retransmission or not to the receiving judger.

The reception determiner is mainly configured to determine whether to perform reception according to the discontinuous reception determination algorithm and input the determination result to the physical frame receiver.

The data receiving processor processes the received physical frame if the input is the reception according to the input of the reception determiner; otherwise, no reception is performed. The data reception processor may further input information on whether the data belongs to the UE to the reception determiner.

Corresponding to the above-described discontinuous reception receiving method, a data transmission method on the network side when the UE is in discontinuous reception in the CEEL _ FACH state is described below. Since the 3G system is a system in which a network and a user apparatus communicate with each other. When the UE is in the CELL _ FACH state, discontinuous reception of downlink data is performed, and a network side device such as an RNC needs to perform discontinuous transmission of downlink data for the UE. The embodiment of the invention provides a method and a device for discontinuous downlink data transmission of an RNC (radio network controller).

The embodiment of the invention provides a state-based discontinuous reception technology sending method and a condition judgment-based sending method. Like the previous receiving method and receiving apparatus, the present invention is not limited thereto.

In the state-based discontinuous reception technique transmission method, for each UE in the CELL _ FACH state, the RNC maintains two states, a transmission state and a non-transmission state. When the state of a certain UE is in a transmission state, the data of the UE may be transmitted, or certainly, may not be transmitted; otherwise it may not be sent. Since all UEs in CELL _ FACH state share the same common radio resource in a CELL, the RNC also has a resource scheduling function to allocate and schedule common resources among multiple UEs.

Fig. 8 shows a state diagram of a state-based discontinuous reception transmission method. The transition between the transmit state and the non-transmit state is condition driven. For example, at the time of the transmission state, if the transition condition B is satisfied, transition is made to the non-transmission state; in the non-transmission state, if the transition condition a is satisfied, the transmission state is transitioned.

Wherein, the conversion condition A comprises the following conditions:

1) if the frame number belonging to the setting range of the discontinuous reception mode arrives, the condition A is satisfied;

2) if the data which is sent by the UE and needs to be responded is received and the response is not sent, the condition A is satisfied;

3) otherwise condition a does not hold.

In contrast, the switching condition B includes the following conditions:

1) if the condition A is not satisfied and the currently transmitted data is not data belonging to the UE, the condition B is satisfied;

2) otherwise condition B does not hold.

Fig. 9 shows a transmitting apparatus of the state-based discontinuous reception technique. Referring to fig. 9, the transmitting apparatus of the state-based discontinuous reception technique includes a reception mode setter, a data receiver, a state register, a transmission determiner, a data scheduling transmitter, and the like.

Wherein the reception mode setter is operable to input the discontinuous reception mode into the transmission determiner. The receiving mode setter may obtain the mode by configuring information obtained by the management module, decoding information sent by the UE, and obtaining a discontinuous receiving mode by compiling a protocol program. And the transmission decider makes a decision of state transition using it.

The data receiver is used for inputting the information of whether the data needing to be responded is received and the information of the data needing to be retransmitted into the sending judger, and the sending judger utilizes the information to judge the state transition.

The sending judger needs to acquire the current state from the state memory when judging the state transition, namely, the sending judger acquires the input of the current state from the state memory; after the state is switched, the updated state needs to be output to the state memory to replace the old state therein.

Since a plurality of UEs in the CELL _ FACH state share the same radio resources in the entire CELL, the RNC needs to perform resource scheduling to determine when to schedule data of the UEs. The data scheduling transmitter needs to determine the current status in the status memory when deciding whether to schedule resources to a certain UE. If the current state is a non-transmission state, the resource can not be scheduled to the UE; if the current state is a transmission state, resources may be scheduled to the UE.

Fig. 10 shows a transmission method of the discontinuous reception technique based on condition judgment. The method is mainly applied to the judgment in the sending judger to judge whether the data of the UE can be scheduled and sent. Referring to fig. 10, the determination flow of the method is as follows:

step 401, judging whether the current frame belongs to the setting range of the discontinuous reception mode, if so, outputting 'yes', and ending the process; otherwise, step 402 is performed.

Step 402, judging whether the previous frame belongs to the UE, and the current frame and the previous frame are in the same TTI or the previous frame has a receiving error, if yes, outputting 'yes', and ending the process; otherwise, step 403 is performed.

Step 403, judging whether data which needs to be responded and is sent by the UE is received, if so, outputting 'yes', and ending the process; otherwise, no is output, and the flow is ended.

"yes" in the above-mentioned procedure means that the current frame belongs to the UE, and the current frame needs to be sent to the UE; "no" indicates that the current frame does not belong to the UE, and the current frame does not need to be sent to the UE.

The data transmission apparatus of the discontinuous reception technique based on the condition judgment shown in fig. 11 may be configured one for each cell in the RNC. Referring to fig. 11, a transmitting apparatus of discontinuous reception technique in RNC includes: a receiving mode setter, a data receiver, a status register, a transmission condition determiner for discontinuous reception, a data scheduling transmitter, etc.

Wherein the reception mode setter is operable to input the discontinuous reception mode to the transmission condition determiner of discontinuous reception. The receiving mode setter may obtain a mode by means of information obtained by configuring the management system, decoding information transmitted by the UE, a discontinuous receiving mode obtained by compiling a protocol program, and the like.

The data receiver is used for inputting information whether the data needing to be answered is received into the sending condition judger of discontinuous reception.

The data scheduling transmitter is used for transmitting the information of the UE to which the data scheduled and transmitted last time belongs to the transmitting condition judger which receives discontinuously.

The discontinuous reception transmission condition judger judges whether it is possible or not according to the input and the above discontinuous reception transmission judgment algorithm, and inputs the judgment result to the data scheduling transmitter.

The data receiving device and the data transmitting device may be combined into a set of data transceiving system, but it should be noted that the data transceiving system according to the embodiment of the present invention is not limited to the data receiving device and the data transmitting device, and may also be composed of other data receiving devices and data transmitting devices, as long as the method according to the embodiment of the present invention can be implemented.

The present invention also proposes another embodiment to implement a method for receiving data on a FACH channel by a UE based on a configured reception mode, as follows:

first, a notification channel is set in the RNC and the UE, for example, the configuration information of the notification channel is compiled into a program and stored in the RNC and the UE, or the network side sends the configuration information of the notification channel to the UE through signaling. The information carried on the notification channel includes information such as UE ID, data channel location, etc.

In the data transmission process, the RNC transmits information such as the ID of the UE that needs to receive data, the data channel position, and the like on the notification channel.

In the data receiving process, the UE receives the notification channel and decodes the notification channel. And if the UE ID in the information carried by the notification channel is matched with the ID of the UE, receiving data on the corresponding data channel according to the position information of the data channel carried by the notification channel.

And if the UE ID in the information carried by the notification channel is not matched with the ID of the UE, not receiving the data channel.

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.

Claims

1. A data receiving method of user equipment UE in a CELL forward access channel CELL _ FACH state is characterized in that,

setting a receiving mode and a judgment condition of the UE in the UE; the judgment conditions are as follows:

if the previous frame is the received frame and the reception is erroneous, the current frame is the received frame; or,

if the previous frame is the received frame and the current frame and the previous frame belong to the same transmission time interval TTI, the current frame is the received frame; or,

if the previous frame is the received frame and the previous frame is correctly received and contains the data of the UE, the current frame is the received frame; or,

if the UE sends data or signaling needing network side response and does not receive the response, the current frame is the received frame;

2. The method of claim 1, wherein the UE determines whether data reception is currently required according to the reception mode and the determination condition, and sets the current state to the reception state if data reception is required; otherwise, setting the current state as a non-receiving state;

and the UE reads the current state and receives the current frame according to the receiving state.

3. The method of claim 1, wherein the setting the reception mode of the UE is setting frames belonging to the UE and/or frames not belonging to the UE in the UE;

the step of receiving data according to the receiving mode and the judgment condition comprises the following steps:

the UE receives the set frame belonging to the UE; and the number of the first and second groups,

and the UE judges whether the set frame which does not belong to the UE needs to be received or not according to the judgment condition, and if the frame needs to be received, the UE receives the frame.

4. The method of claim 1, wherein the setting the UE reception mode comprises the UE receiving a notification channel first, and receiving data on a corresponding data channel if the information on the notification channel includes information of the UE; and if the information on the notification channel does not contain the information of the UE, judging whether to receive the data according to the set judgment condition.

5. The method according to claim 3, wherein the step of setting the frame belonging to the UE and/or the frame not belonging to the UE comprises: and setting the frame number of the frame belonging to the UE and/or the frame number of the frame not belonging to the UE.

6. The method of claim 1, wherein the step of setting the reception mode in the UE comprises:

compiling the receiving mode into a program and storing the program in a memory of the UE; or,

the network side informs the UE of the receiving mode; or,

and the UE downloads the receiving mode on a network server and configures the receiving mode into the UE.

7. A data transmission method of a network side device of UE in CELL _ FACH state is characterized in that,

setting a receiving mode and a judgment condition of the UE in network side equipment;

and in the data sending process, the network side equipment sends data according to the receiving mode and the judgment condition of the UE.

8. The method according to claim 7, wherein the network side device determines whether data transmission is currently required according to the receiving mode and the determination condition of the UE, and sets the current state of the UE maintained in the network side device to be a transmission state if data transmission is required; otherwise, setting the current state of the maintained UE as a non-transmission state;

and the network side equipment reads the current state of the UE, determines whether the current frame is a frame which can be sent or not according to the sending state, and if the current frame is the frame which can be sent and further judges that data can be sent to the UE, the network side equipment sends the frame to the UE.

9. The method according to claim 7, wherein the setting of the reception mode of the UE is setting of frames belonging to the UE and/or frames not belonging to the UE in a network side device;

the step of sending data according to the receiving mode and the judgment condition of the UE comprises the following steps:

the network side equipment judges whether the current frame is the set frame belonging to the UE, if so, the current frame is a frame which can be sent;

the network side equipment judges whether the set frame which does not belong to the UE is a frame which can be sent or not according to a judgment condition, and if so, the frame is a frame which can be sent;

and if the current frame is a frame which can be sent and further the data can be sent to the UE is judged, the network side equipment sends the frame to the UE.

10. The method of claim 7, wherein the setting the UE reception mode comprises the network side device sending information of the UE and corresponding data channel location information on a notification channel.

11. The method according to claim 7, wherein the determination condition is:

if the previous frame is a frame which can be sent and contains the data of the UE, the current frame is a frame which can be sent; or,

if the previous frame is a frame which can be sent, and the current frame and the previous frame belong to the same TTI, the current frame is a frame which can be sent; or,

and if data or signaling which needs network side response from the UE is received and no response is sent, the current frame is a frame which can be sent.

12. The method of claim 7, wherein the network side device is a Radio Network Controller (RNC).

13. A data receiving apparatus for a UE in a CELL _ FACH state, the apparatus comprising:

a receiving judger for judging whether the current frame not belonging to the UE needs to be received according to the receiving mode and the judging condition and obtaining the judging result that the receiving is needed or not; the judgment conditions are as follows:

14. The data receiving apparatus of claim 13, further comprising a state memory for storing a current state of the UE as a receiving state or a non-receiving state;

the receiving judger is further used for updating the current state in the state memory to a receiving state when the judgment result is that the receiving is needed, and updating the current state in the state memory to a non-receiving state when the judgment result is that the receiving is not needed;

the data receiving processor is further used for reading the current state from the state memory and receiving and processing the current frame when the current state is the receiving state.

15. The data receiving device of claim 13, wherein the data receiving device further comprises:

a reception mode setter for inputting the set reception mode into the reception determiner for the reception determiner to determine; and/or the presence of a gas in the gas,

and the data transmitter is used for inputting the information whether to transmit the data needing to wait for the response and/or the data needing to wait for the retransmission into the receiving judger for the receiving judger to judge.

16. A data transmission apparatus on a network side of a UE in a CELL _ FACH state, the data transmission apparatus comprising:

17. The data transmission apparatus according to claim 16, further comprising a state memory for storing the current state of the UE as a transmission state or a non-transmission state;

the sending judger is further configured to update the current state of the UE maintained in the state memory to a sending state when the judgment result is that the UE needs to be sent, and update the current state of the UE maintained in the state memory to a non-sending state when the judgment result is that the UE does not need to be sent;

the data scheduling transmitter is further configured to read the current state of the UE in the state memory, and schedule a wireless resource to transmit a current frame to the UE when the current state of the UE is a transmission state.

18. The data transmission apparatus according to claim 16, wherein the data transmission apparatus further comprises:

and the data transmitter is used for inputting the information whether the data needing to be answered is received and/or whether the data needs to be retransmitted into the receiving judger for the receiving judger to judge.

19. The apparatus of claim 16 wherein the data transmitting means is located in the RNC.