CN105764143B - User terminal and its data transmission method for uplink and device under UM mode - Google Patents
User terminal and its data transmission method for uplink and device under UM mode Download PDFInfo
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Abstract
User terminal and its data transmission method for uplink and device under UM mode, which comprises send request in response to the data packet received, establish radio bearer for the data packet, the value of the corresponding sdu_size of the data packet is obtained from transmit queue；Determine the optimal value of the corresponding pdu_size of the data packet, the optimal value of pdu_size are as follows: in the optional set of pdu_size, meet pdu_size >=(sd u_size+li_size+pdu_hl_size) and make the value of pdu_size- (sdu_size+li_size+pdu_hl_size) the smallest pdu_size；The optimal value of the pdu_size is set by the value of pdu_size in the radio bearer.The present invention can adjust in time the value of pdu_size in radio bearer, reduce invalid data, be conducive to the efficient transmission of upstream data when sdu_size changes.
Description
Technical field
The present invention relates to wireless communication technology fields, send out more particularly to the data under a kind of user terminal and its UM mode
Delivery method and device.
Relational language is explained
UE --- User Equipment --- user terminal, abbreviation terminal；
RLC --- Radio Link Control --- wireless spread-spectrum technology；
MAC --- Media Access Control --- media access control layer；
PDU --- Protocol Data Unit --- protocol Data Unit；
SDU --- Service Data Unit --- service data unit；
HSUPA --- High Speed Uplink Packet Access --- High Speed Uplink Packet access；
GPRS --- General Packet Radio Service --- general packet radio service；
WCDMA --- Wideband Code Division Multiple Access --- wideband code division multiple access；
TD-SCDMA——Time Division-Synchronous Code Division Multiple Ac
Cess --- TD SDMA；
LTE --- Long Term Evolution --- long term evolution；
GCF --- Global Certification Forum --- global forum；
GCF test --- (mobile phone) uniformity test.
Background technique
RLC is the wireless chain control layer agreement in the wireless communication systems such as GPRS/WCDMA/TD-SCDMA/LTE.With
For WCDMA system, in a wcdma system, rlc layer is located on MAC layer, belongs to a part of L2, is user and control number
Business is segmented and retransmitted according to providing.
Each RLC entity is configured by RRC (Radio Resource Control, wireless heterogeneous networks), according to service class
The difference of type can be divided into Three models: TM mode (transparent mode), UM mode (Unacknowledged Mode) and AM mode (confirmation mould
Formula).Wherein, UM mode can be used for the business such as Cell Broadcast CB, IP phone.Under UM mode, sending entity adds on high-rise PDU
Add necessary control protocol expense, be then transmitted but do not guarantee that and be transmitted to peer-entities, and without using retransmission protocol；
Receiving entity is submitted after being labeled as mistake to received wrong data, or is directly abandoned and reported to high level.
When carrying out data transmission under UM mode, it is thus necessary to determine that pdu_size on radio bearer (Radio Bearer, RB)
The value of (protocol data unit length) needs the memory headroom applied with this to calculate when data are sent.For pdu_size selection
One suitable value advantageously reduces invalid data (padding), and then the efficiency of data transmission can be improved.
Relevant data surface related protocol 25.331 is checked in 3GPP agreement, in data surface treatment HSUPA data, net
Network is only allocated to RLC entity one data acquisition system about pdu_size according to the actual situation, and (referred to as pdu_size can selected works
Close), terminal can one value of selection from this collection carry out the pdu_size in configured radio bearer.But in relevant agreement simultaneously
It does not find on how to remove the data acquisition system configured using this, this has resulted in many uncertainties, different users
Formula can generate different effects, will also affect certainly to the efficiency of transmission of upstream data.
The optimal value of pdu_size can change with the value of sdu_size, and the value of sdu_size then can with to
It sends the size of data packet and changes.Therefore, when the size of data packet to be sent changes, in order to guarantee upstream data
It efficiently sends, needs to adjust the value (otherwise will generate invalid data) of pdu_size in radio bearer in time.In WCDMA system
Under, the optimal value of pdu_size frequently changes in certain scenes.These scenes include but is not limited to: under UM mode
HSUPA data are sent and its correlation GCF test (case14.7.6).
For example, the HSUPA data transmission under UM mode is mainly used for the stronger scene of some real-times (such as Streaming Media),
During this, the size of data packet can occur to change in real time.The size variation of data packet can to send out above logic channel
The sdu_size sent changes therewith, in the case, if the value of pdu_size in radio bearer cannot be adjusted in time, will lead to
Invalid data increases, and is unfavorable for the efficient transmission of upstream data.
In the prior art, the data transmission method for uplink under UM mode usually only can not accommodate sdu_size pdu_size is too small
The value of pdu_size is adjusted in the case where (leading to not be packaged), and then and is paid no attention in the case of pdu_size is excessive
Meeting is so possible to cause the memory headroom of application excessive, generates more invalid data, influences the transmission effect of upstream data
Rate.The defect (size real-time change of data packet) under the stronger scene of some real-times is particularly evident.
Summary of the invention
Technical problem solved by the present invention is how to adjust radio bearer in real time when carrying out data transmission under UM mode
The value of middle pdu_size, to guarantee the efficient transmission of upstream data.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides the data transmission method for uplink under a kind of UM mode, comprising:
Request is sent in response to the data packet received, establishes radio bearer, the radio bearer of foundation for the data packet
In include pdu_size value, wherein the pdu_size be protocol data unit length；
Request is sent in response to the data packet received, the corresponding sdu_size of the data packet is obtained from transmit queue
Value, wherein the sdu_size be service data unit length；
Determine the optimal value of the corresponding pdu_size of the data packet, the optimal value of pdu_size are as follows: in pdu_
In the optional set of size, meet pdu_size >=(sdu_size+li_size+pdu_hl_size) and make pdu_size-
(sdu_size+li_size+pdu_hl_size) value of the smallest pdu_size, wherein li_size indicates that length indicator is long
Degree, pdu_hl_size Presentation protocol data unit head length；
The optimal value of the pdu_size is set by the value of pdu_size in the radio bearer.
Optionally, the value by pdu_size in the radio bearer be set as the optimal value of the pdu_size it
Afterwards, further includes:
Based on the optimal value configuration logic channel buffering of the pdu_size；
The data packet is sent to physical layer.
Optionally, described buffered based on the optimal value configuration logic channel of the pdu_size includes: based on the pdu_
The optimal value of size determines the memory headroom for needing to apply when the data packet is sent.
Optionally, the corresponding optimal value of pdu_size of the determination data packet includes:
Its correspondence pdu_size- is calculated separately for the value of each optional pdu_size in the optional set of pdu_size
(sdu_size+li_size+pdu_hl_size) value；
Meet pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, with the smallest pdu_
The value of pdu_size corresponding to size- (sdu_size+li_size+pdu_hl_size) takes as the pdu_size is optimal
Value.
Optionally, the optional set of the pdu_size is provided by network side.
Optionally, the value of pdu_hl_size is 1.
Optionally, the data transmission method for uplink is determining for each data packet or partial data packet and corresponding using its
The optimal value of pdu_size.
Optionally, the data transmission method for uplink is under WCDMA system.
Optionally, the data transmission method for uplink carries out data hair using the transmission mode of High Speed Uplink Packet access
It send.
In order to solve the above-mentioned technical problem, the embodiment of the present invention also provides the data sending device under a kind of UM mode, packet
Include: radio bearer establishes unit, sdu_size value unit, optimal value determination unit and configuration change unit；Wherein:
Radio bearer establishes unit, for sending request in response to the data packet received, establishes nothing for the data packet
Line carries, and includes the value of pdu_size in the radio bearer of foundation, wherein the pdu_size is protocol data unit length；
Sdu_size value unit obtains institute for sending request in response to the data packet received from transmit queue
State the value of the corresponding sdu_size of data packet, wherein the sdu_size is service data unit length；
Optimal value determination unit, for determining the data after the sdu_size value unit executes operation
Wrap the corresponding optimal value of pdu_size, the optimal value of pdu_size are as follows: in the optional set of pdu_size, meet pdu_
Size >=(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+pdu_hl_
Size) the value of the smallest pdu_size, wherein li_size indicates length indicator length, pdu_hl_size presentation protocol number
According to unit header length；
Configuration change unit is used for after the optimal value determination unit executes operation, will be in the radio bearer
The value of pdu_size is set as the optimal value of the pdu_size.
Optionally, the data sending device further include: buffering configuration unit and transmission unit；Wherein:
Configuration unit is buffered, for it is optimal to be based on the pdu_size after the configuration change unit executes operation
Value configures logic channel buffering；
Transmission unit, for after the buffering configuration unit executes operation, the data packet to be sent to physical layer.
Optionally, described buffered based on the optimal value configuration logic channel of the pdu_size includes: based on the pdu_
The optimal value of size determines the memory headroom for needing to apply when the data packet is sent.
Optionally, the corresponding optimal value of pdu_size of the determination data packet includes:
Its correspondence pdu_size- is calculated separately for the value of each optional pdu_size in the optional set of pdu_size
(sdu_size+li_size+pdu_hl_size) value；
Meet pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, with the smallest pdu_
The value of pdu_size corresponding to size- (sdu_size+li_size+pdu_hl_size) takes as the pdu_size is optimal
Value.
Optionally, the optional set of the pdu_size is provided by network side.
Optionally, the value of pdu_hl_size is 1.
Optionally, the data sending device is determining for each data packet or partial data packet and corresponding using its
The optimal value of pdu_size.
Optionally, the data sending device is under WCDMA system.
Optionally, the data sending device carries out data hair using the transmission mode of High Speed Uplink Packet access
It send.
In order to solve the above-mentioned technical problem, the embodiment of the present invention also provides a kind of user terminal, and the user terminal is supported
WCDMA system, the user terminal are supported to carry out data transmission under UM mode, further include the data transmission under above-mentioned UM mode
Device.
Optionally, the user terminal is mobile phone.
Compared with prior art, technical solution of the present invention has the advantages that
Request is sent in response to the data packet received, the corresponding sdu_size of the data packet is obtained from transmit queue
Value, and the optimal value of the corresponding pdu_size of the data packet is determined with this, is carried out based on the optimal value of the pdu_size
The transmission of the data packet, so as to adjust the value of pdu_size in radio bearer in time when sdu_size changes,
Reduce invalid data, is conducive to the efficient transmission of upstream data.
Further, the optimal value of the pdu_size are as follows: in the optional set of pdu_size, meet pdu_size >=
(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+pdu_hl_size) most
The value of small pdu_size clearly gives the algorithmic formula of the optimal value of determining pdu_size.
Further, the optimal value of pdu_size is determined using difference comparsion method, so as to what is provided from network side
Fast selecting obtains the optimal value of pdu_size in the optional set of pdu_size, and the algorithm can be realized by software program.
Further, determining for each data packet or partial data packet and corresponding pdu_size is optimal takes using its
Value (such as real-time of reference scene etc.) can use pdu_size appropriate to adjust frequency according to actual needs, so as to
To take into account data transmission efficiency and computing cost.
Further, the characteristics of being fixed as 1 byte for protocol data unit head minister's degree under current UM mode, directly
Pdu_hl_size=1 is substituted into algorithmic formula, to simplify operation.
Detailed description of the invention
Fig. 1 is the data transmission method for uplink flow chart in the embodiment of the present invention under UM mode；
Fig. 2 is the data sending device structural block diagram in the embodiment of the present invention under UM mode.
Specific embodiment
According to the analysis of background technology part it is found that when carrying out data transmission under UM mode, it is thus necessary to determine that radio bearer
The value of middle pdu_size needs the memory headroom applied with this to calculate when data are sent.
The optimal value of pdu_size can change with the value of sdu_size, and the value of sdu_size then can with to
It sends the size of data packet and changes, therefore, when the size of data packet to be sent changes, in order to guarantee upstream data
It efficiently sends, needs to adjust the value of pdu_size in radio bearer in time.
In the prior art, the data transmission method for uplink under UM mode usually only can not accommodate sdu_size pdu_size is too small
The value of pdu_size is adjusted in the case where (leading to not be packaged), and then and is paid no attention in the case of pdu_size is excessive
Meeting is so possible to cause the memory headroom of application excessive, generates more invalid data, influences the transmission effect of upstream data
Rate.The defect (size real-time change of data packet) under the stronger scene of some real-times is particularly evident.
The present invention sends request in response to the data packet received, and it is corresponding that the data packet is obtained from transmit queue
The value of sdu_size, and the optimal value of the corresponding pdu_size of the data packet is determined with this, it is optimal based on the pdu_size
Value carries out the transmission of the data packet, so as to adjust pdu_ in radio bearer in time when sdu_size changes
The value of size, reduces invalid data, is conducive to the efficient transmission of upstream data.
To more fully understand those skilled in the art and realizing the present invention, referring to the drawings, pass through specific embodiment
It is described in detail.
Embodiment one
As described below, the embodiment of the present invention provides the data transmission method for uplink under a kind of UM mode.
Data transmission method for uplink flow chart under UM mode shown in referring to Fig.1 carries out specifically below by way of specific steps
It is bright:
Firstly, method provided by the present embodiment is commonly available to WCDMA system, that is, it is commonly available to support WCDMA system
The user terminal of system.
It is sent secondly, method provided by the present embodiment is suitable for the data under UM mode, that is, is suitable for supporting in UM mould
The user terminal of data transmission is carried out under formula.
In a specific embodiment, the data transmission method for uplink uses the transmission side of High Speed Uplink Packet access
Formula carries out data transmission, and the data transmission method for uplink is suitable for supporting to carry out with the transmission mode of High Speed Uplink Packet access
The user terminal that data are sent.
It is understood that the present invention is not limited to carry out data using the transmission mode of High Speed Uplink Packet access
It sends.In other embodiments, other data transfer modes are readily applicable to.
In a specific implementation, the data transmission method for uplink can be used in GCF test case14.7.6.
S101 sends request in response to the data packet received, establishes radio bearer for the data packet.
Radio bearer is the linking format collection between terminal and network side (such as UTRAN network), is related to UU mouthfuls L1, L2 layers
Format issues, the relevant configuration including physical channel, transmission channel, logic channel etc..
Terminal needs first to establish radio bearer before sending business data packet to network side.
It include the value of pdu_size in the present embodiment, in the radio bearer of foundation, wherein the pdu_size is agreement number
According to element length.
S102 sends request in response to the data packet received, it is corresponding that the data packet is obtained from transmit queue
The value of sdu_size.
Wherein, the sdu_size is service data unit length.
Service data unit is added to transmit queue (tx queue) after being assembled into protocol Data Unit.?
That is in transmit queue being the data packet for having been assembled to protocol Data Unit.Described in the present embodiment therefrom obtains
The value of the corresponding sdu_size of data packet.
The value of the corresponding sdu_size of the data packet can be usually obtained after establishing radio bearer.It is to be understood that
, the execution of step S102 is not rely on step S101, therefore, step S102 theoretically can also before S101 or
It is to be performed simultaneously.
The value of the obtained corresponding sdu_size of the data packet can be used to determine in the next steps the data packet
The corresponding optimal value of pdu_size.
S103 determines the optimal value of the corresponding pdu_size of the data packet.
The specific algorithm formula for determining the optimal value of pdu_size is provided in the present embodiment.Specifically, the pdu_size
Optimal value are as follows: in the optional set of pdu_size, meet pdu_size >=(sdu_size+li_size+pdu_hl_size)
And make the value of pdu_size- (sdu_size+li_size+pdu_hl_size) the smallest pdu_size.
In specific implementation, the optional set of the pdu_size can be provided by network side.
As previously mentioned, based on data surface related protocol 25.331 in 3GPP agreement it is found that in data surface treatment HSUPA data
When, network side would generally be allocated to one optional set of pdu_size of RLC entity according to the actual situation.
That is, not arbitrary value can be used as pdu_size, it is typically only capable to the pdu_size provided from network side
Some value is selected to be used as pdu_size in optional set.
In the present embodiment, the optimal value of pdu_size are as follows: in the optional set of pdu_size, meet pdu_size >
=(sdu_size+li_size+1) and the value for making pdu_size- (sdu_size+li_size+1) the smallest pdu_size.
Wherein, li_size indicates length indicator length (Length Indicator_size).Length indicator is used for
Indicate the occupied length of service data unit (Length Indicator is used in protocol Data Unit
Indicate the last octet of each RLC SDU ending within the PDU), specifically refer to 3GPP
Related content in agreement 25.322, does not repeat herein.
In order to meet the requirement normally sent, the value of pdu_size cannot be too small.Specifically, pdu_size at least needs energy
It enough accommodates sdu_size and necessary format information, necessary format information generally includes: length indicator length and agreement
Data cell head length degree.That is pdu_size >=(sdu_size+li_size+pdu_hl_size), wherein pdu_hl_size
Presentation protocol data unit head length (head length).
Since protocol data unit head minister's degree is fixed as 1 byte under current UM mode, above-mentioned formula can letter
Turn to pdu_size >=(sdu_size+li_size+1).
Meet above-mentioned pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, in order to reduce
The value of invalid data, pdu_size also should not be too large.Specifically, pdu_size and (sdu_size+li_size+pdu_ should be made
Hl_size) close to.That is pdu_size- (sdu_size+li_size+pdu_hl_size) is minimum.
Similarly, due under current UM mode protocol data unit head minister's degree be fixed as 1 byte, above-mentioned formula
It can simplify as pdu_size- (sdu_size+li_size+1) minimum.
By above to the description of technical solution it can be seen that in the present embodiment, for protocol data under current UM mode
Unit header length is fixed as the characteristics of 1 byte, directly substitutes into pdu_hl_size=1 in algorithmic formula, to simplify fortune
It calculates.
It is understood that described pdu_size, sdu_size, li_size and pdu_hl_ involved in above-mentioned formula
Size corresponds to same data packet.
It in specific implementation, can be using difference comparsion method (from naming, being specifically described as standard with following), specifically, needle
It is calculated separately to the value of each optional pdu_size in the optional set of pdu_size and corresponds to pdu_size- (sdu_size+
Li_size+pdu_hl_size value), meet pdu_size >=(sdu_size+li_size+pdu_hl_size) before
Put, using the value of pdu_size corresponding to the smallest pdu_size- (sdu_size+li_size+pdu_hl_size) as
The optimal value of pdu_size.
By above to the description of technical solution it can be seen that determining pdu_ using difference comparsion method in the present embodiment
The optimal value of size, so as to which to obtain pdu_size optimal for fast selecting from the pdu_size optional set that network side provides
Value, and the algorithm can be realized by software program.
It is understood that the execution of step S103 is not rely on step S101, and subsequent step S104 then needs
It establishes on the basis of step S101 has been carried out.
The value of pdu_size in the radio bearer is set the optimal value of the pdu_size by S104.
(step S101) would generally be using some value in the optional set of pdu_size as pdu_ when establishing for radio bearer
The default value of size.
In the present embodiment, after step S103 determines the optimal value of pdu_size, by pdu_ in the radio bearer
The value of size is set as the optimal value of the pdu_size.It can specifically be realized by changing the configuration of radio bearer.
By above to the description of technical solution it can be seen that being sent in the present embodiment in response to the data packet received
Request, obtains the value of the corresponding sdu_size of the data packet, and determine that the data packet is corresponding with this from transmit queue
The optimal value of pdu_size carries out the transmission of the data packet, based on the optimal value of the pdu_size so as in sdu_
When size changes, the value of pdu_size in radio bearer is adjusted in time, reduces invalid data, is conducive to upstream data
Efficiently send.
Further, the optimal value of the pdu_size are as follows: in the optional set of pdu_size, meet pdu_size >=
(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+pdu_hl_size) most
The value of small pdu_size clearly gives the algorithmic formula of the optimal value of determining pdu_size.
S105, based on the optimal value configuration logic channel buffering of the pdu_size.
After the value of pdu_size in the radio bearer to be arranged to (change) and is the optimal value of the pdu_size, lead to
Rearranging logic channel buffer (Logical Channel buffer) often is needed, so as to the value of new pdu_size
Carry out data transmission.
The data packet is sent to physical layer by S106.
The data packet (being assembled in protocol Data Unit) is sent to physical layer, and then subsequent hair can be carried out
It send.
It should be noted that being sent to after physical layer present invention is primarily concerned with the processing of data surface for data packet
Processing, can refer to related content in the prior art, this will not be repeated here.
Data transmission method for uplink provided by the present embodiment can be determining for each data packet and corresponding using its
The optimal value of pdu_size to be reduced as far as invalid data, but correspondingly also brings along certain computing cost, is applicable in
In the stronger scene of some real-times (the size real-time change of data packet).
It is understood that the data transmission method for uplink can also be determining only for partial data packet and corresponding using its
The optimal value of pdu_size.Specifically, it can be every several data packets (such as every 10 data packets) or every certain
Time interval (such as every 5ms) change a pdu_size value, to avoid excessive computing cost.
By above to the description of technical solution it can be seen that in the present embodiment, for each data packet or part number
Its corresponding optimal value of pdu_size is determined and used according to packet, it can (such as the real-time of reference scene according to actual needs
Deng) using pdu_size appropriate adjustment frequency, so as to take into account data transmission efficiency and computing cost.
Embodiment two
As described below, the embodiment of the present invention provides the data sending device under a kind of UM mode.
Referring to the data sending device structural block diagram under UM mode shown in Fig. 2:
Data sending device under the UM mode includes: that radio bearer establishes unit 201, sdu_size value unit
202, optimal value determination unit 203 and configuration change unit 204；Wherein the major function of each unit is as follows:
Radio bearer establishes unit 201, for sending request in response to the data packet received, establishes for the data packet
Radio bearer includes the value of pdu_size in the radio bearer of foundation, wherein the pdu_size is that protocol Data Unit is long
Degree；
Sdu_size value unit 202, for sending request in response to the data packet received, from transmit queue 207
Obtain the value of the corresponding sdu_size of the data packet, wherein the sdu_size is service data unit length；
Optimal value determination unit 203, for determining institute after the sdu_size value unit 202 executes operation
State the optimal value of the corresponding pdu_size of data packet, the optimal value of pdu_size are as follows: full in the optional set of pdu_size
Sufficient pdu_size >=(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+
Pdu_hl_size) the value of the smallest pdu_size, wherein li_size indicates length indicator length, and pdu_hl_size is indicated
Protocol data unit head minister's degree；
Configuration change unit 204 is used for after the optimal value determination unit 203 executes operation, will be described wireless
The value of pdu_size is set as the optimal value of the pdu_size in carrying.
By above to the description of technical solution it can be seen that being sent in the present embodiment in response to the data packet received
Request, obtains the value of the corresponding sdu_size of the data packet, and determine that the data packet is corresponding with this from transmit queue
The optimal value of pdu_size carries out the transmission of the data packet, based on the optimal value of the pdu_size so as in sdu_
When size changes, the value of pdu_size in radio bearer is adjusted in time, reduces invalid data, is conducive to upstream data
Efficiently send.
Further, the optimal value of the pdu_size are as follows: in the optional set of pdu_size, meet pdu_size >=
(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+pdu_hl_size) most
The value of small pdu_size clearly gives the algorithmic formula of the optimal value of determining pdu_size.
The data sending device can also include: buffering configuration unit 205 and transmission unit 206；Wherein:
Configuration unit 205 is buffered, for being based on the pdu_ after the configuration change unit 204 executes operation
The optimal value configuration logic channel buffering of size；
Transmission unit 206, for after the buffering configuration unit 205 executes operation, the data packet to be sent to
Physical layer 208.
In specific implementation, described buffered based on the optimal value configuration logic channel of the pdu_size may include: base
The memory headroom for needing to apply when the optimal value of the pdu_size determines that the data packet is sent.
In specific implementation, the corresponding optimal value of pdu_size of the determination data packet may include:
Its correspondence pdu_size- is calculated separately for the value of each optional pdu_size in the optional set of pdu_size
(sdu_size+li_size+pdu_hl_size) value；
Meet pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, with the smallest pdu_
The value of pdu_size corresponding to size- (sdu_size+li_size+pdu_hl_size) takes as the pdu_size is optimal
Value.
By above to the description of technical solution it can be seen that determining pdu_ using difference comparsion method in the present embodiment
The optimal value of size, so as to which to obtain pdu_size optimal for fast selecting from the pdu_size optional set that network side provides
Value, and the algorithm can be realized by software program.
In specific implementation, the optional set of the pdu_size can be provided by network side.
In specific implementation, the value of pdu_hl_size is 1.
By above to the description of technical solution it can be seen that in the present embodiment, for protocol data under current UM mode
Unit header length is fixed as the characteristics of 1 byte, directly substitutes into pdu_hl_size=1 in algorithmic formula, to simplify fortune
It calculates.
In specific implementation, the data sending device is determining for each data packet or partial data packet and uses it
The corresponding optimal value of pdu_size.
By above to the description of technical solution it can be seen that in the present embodiment, for each data packet or part number
Its corresponding optimal value of pdu_size is determined and used according to packet, it can (such as the real-time of reference scene according to actual needs
Deng) using pdu_size appropriate adjustment frequency, so as to take into account data transmission efficiency and computing cost.
In specific implementation, the data sending device can be used under WCDMA system.
In specific implementation, the data sending device can using High Speed Uplink Packet access transmission mode into
Row data are sent.
Embodiment three
As described below, the embodiment of the present invention provides a kind of user terminal.
The user terminal supports WCDMA system, and supports to carry out data transmission under UM mode.
The difference is that, which further includes the UM mould as provided in the embodiment of the present invention with the prior art
Data sending device under formula.Thus the user terminal, which is able to respond, sends request in the data packet received, from transmit queue
The middle value for obtaining the corresponding sdu_size of the data packet, and determine that the corresponding pdu_size of the data packet is optimal with this and take
Value, the transmission of the data packet is carried out based on the optimal value of the pdu_size, so as to when sdu_size changes,
The value for adjusting pdu_size in radio bearer in time, reduces invalid data, is conducive to the efficient transmission of upstream data.
In specific implementation, the user terminal can be mobile phone.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (20)
1. the data transmission method for uplink under a kind of UM mode characterized by comprising
Request is sent in response to the data packet received, radio bearer is established for the data packet, is wrapped in the radio bearer of foundation
Include the value of pdu_size, wherein the pdu_size is protocol data unit length；
Request is sent in response to the data packet received, obtains the corresponding sdu_size's of the data packet from transmit queue
Value, wherein the sdu_size is service data unit length；
Determine the optimal value of the corresponding pdu_size of the data packet, the optimal value of pdu_size are as follows: pdu_size can
During selected works close, meet pdu_size >=(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_
Size+li_size+pdu_hl_size) the value of the smallest pdu_size, wherein li_size indicates length indicator length,
Pdu_hl_size Presentation protocol data unit head length；
The optimal value of the pdu_size is set by the value of pdu_size in the radio bearer.
2. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that described by the radio bearer
The value of middle pdu_size is set as after the optimal value of the pdu_size, further includes:
Based on the optimal value configuration logic channel buffering of the pdu_size；
The data packet is sent to physical layer.
3. the data transmission method for uplink under UM mode as claimed in claim 2, which is characterized in that described to be based on the pdu_size
Optimal value configuration logic channel buffering includes: to need Shen when determining that the data packet is sent based on the optimal value of the pdu_size
Memory headroom please.
4. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the determination data packet pair
The optimal value of the pdu_size answered includes:
Its correspondence pdu_size- is calculated separately for the value of each optional pdu_size in the optional set of pdu_size
(sdu_size+li_size+pdu_hl_size) value；
Meet pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, with the smallest pdu_size-
(sdu_size+li_size+pdu_hl_size) value of the pdu_size corresponding to is as the optimal value of the pdu_size.
5. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the optional set of pdu_size
It is provided by network side.
6. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the value of pdu_hl_size is 1.
7. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the data transmission method for uplink is directed to
Each data packet or the determination of partial data packet simultaneously use its corresponding optimal value of pdu_size.
8. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the data transmission method for uplink is used for
Under WCDMA system.
9. the data transmission method for uplink under UM mode as described in claim 1, which is characterized in that the data transmission method for uplink uses
The transmission mode of High Speed Uplink Packet access carries out data transmission.
10. the data sending device under a kind of UM mode characterized by comprising radio bearer establishes unit, sdu_size takes
Value cell, optimal value determination unit and configuration change unit；Wherein:
Radio bearer establishes unit, for sending request in response to the data packet received, wirelessly holds for data packet foundation
It carries, includes the value of pdu_size in the radio bearer of foundation, wherein the pdu_size is protocol data unit length；
Sdu_size value unit obtains the number for sending request in response to the data packet received from transmit queue
According to the value for wrapping corresponding sdu_size, wherein the sdu_size is service data unit length；
Optimal value determination unit, for determining the data packet pair after the sdu_size value unit executes operation
The optimal value of the pdu_size answered, the optimal value of pdu_size are as follows: in the optional set of pdu_size, meet pdu_size
>=(sdu_size+li_size+pdu_hl_size) and make pdu_size- (sdu_size+li_size+pdu_hl_
Size) the value of the smallest pdu_size, wherein li_size indicates length indicator length, pdu_hl_size presentation protocol number
According to unit header length；
Configuration change unit is used for after the optimal value determination unit executes operation, by pdu_ in the radio bearer
The value of size is set as the optimal value of the pdu_size.
11. the data sending device under UM mode as claimed in claim 10, which is characterized in that further include: buffering configuration is single
Member and transmission unit；Wherein:
Configuration unit is buffered, for being based on the optimal value of the pdu_size after the configuration change unit executes operation
Configure logic channel buffering；
Transmission unit, for after the buffering configuration unit executes operation, the data packet to be sent to physical layer.
12. the data sending device under UM mode as claimed in claim 11, which is characterized in that described to be based on the pdu_
The optimal value configuration logic channel buffering of size includes: to need when determining that the data packet is sent based on the optimal value of the pdu_size
The memory headroom to be applied.
13. the data sending device under UM mode as claimed in claim 10, which is characterized in that the determination data packet
The corresponding optimal value of pdu_size includes:
Its correspondence pdu_size- is calculated separately for the value of each optional pdu_size in the optional set of pdu_size
(sdu_size+li_size+pdu_hl_size) value；
Meet pdu_size >=(sdu_size+li_size+pdu_hl_size) under the premise of, with the smallest pdu_size-
(sdu_size+li_size+pdu_hl_size) value of the pdu_size corresponding to is as the optimal value of the pdu_size.
14. the data sending device under UM mode as claimed in claim 10, which is characterized in that the pdu_size can selected works
Conjunction is provided by network side.
15. the data sending device under UM mode as claimed in claim 10, which is characterized in that the value of pdu_hl_size is
1。
16. the data sending device under UM mode as claimed in claim 10, which is characterized in that the data sending device needle
To each data packet or the determination of partial data packet and use its corresponding optimal value of pdu_size.
17. the data sending device under UM mode as claimed in claim 10, which is characterized in that the data sending device is used
Under WCDMA system.
18. the data sending device under UM mode as claimed in claim 10, which is characterized in that the data sending device is adopted
Data transmission is carried out with the transmission mode of High Speed Uplink Packet access.
19. a kind of user terminal, the user terminal supports WCDMA system, and the user terminal support carries out under UM mode
Data are sent, which is characterized in that further include the data transmission dress under the UM mode as described in any one of claim 10 to 18
It sets.
20. user terminal as claimed in claim 19, which is characterized in that the user terminal is mobile phone.
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| CN101379733A (en) * | 2006-02-07 | 2009-03-04 | Lg电子株式会社 | Method for operating enhanced RLC entity and RNC entity for WCDMA and system thereof |
| CN101867972A (en) * | 2010-06-29 | 2010-10-20 | 中国科学院计算技术研究所 | Data transmission method in unacknowledged mode of wireless link control layer |
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| CN101379733A (en) * | 2006-02-07 | 2009-03-04 | Lg电子株式会社 | Method for operating enhanced RLC entity and RNC entity for WCDMA and system thereof |
| CN101867972A (en) * | 2010-06-29 | 2010-10-20 | 中国科学院计算技术研究所 | Data transmission method in unacknowledged mode of wireless link control layer |
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