CN101272615A - Transmission method and device for resource position field in resource allocation signaling - Google Patents
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Abstract
The invention relates to a method for transmitting resource location field in resource assignment signaling and a device thereof. The method comprises the following steps: a base station determines the smallest size of the resource location field in the resource assignment signaling according to system bandwidth and width of guard band; the base station adds the information of the resource location to the resource assignment signaling according to the determined smallest size; the base station sends the resource assignment signaling in a downlink channel; the terminal gets the starting location and/or end location of authorization resource in an uplink channel and/or the downlink channel according to the resource assignment signaling. The device consists of a size determining module, an adding module for information of resource location and a signaling sending and receiving module. The method and the device of the invention can determine the size of the resource location field in the resource assignment signaling according to the situation of the system bandwidth so as to effectively improve the use efficiency of L1/L2 control channel.
Description
Technical field
The present invention relates to the communications field, relate in particular to resource position field transmission method and device in the resource allocation signal.
Background technology
3GPP LTE (third generation affiliate's Long Term Evolution) system mainly is made up of terminal, base station and core net, as shown in Figure 1.Wherein, the connection of logic or physics can be arranged as required between the base station, the network of being made up of the base station is called RAN (Radio Access Network wireless access network), is responsible for the Access Layer affairs, such as the management of Radio Resource; The Radio Resource of up-downgoing is responsible for scheduling by the mode of shared channel by the base station.The base station is connected with core net, and each base station can be connected with one or more than one core net node (CN), and core net is responsible for the Non-Access Stratum affairs, such as charging, location management etc.Terminal be meant can with the equipment of network communication, such as mobile phone or notebook computer etc., each terminal usually only is connected to a base station in the network on up direction.
In existing 3GPP LTE system,, adopt the mode of base station scheduling to control the uplink and downlink transmission of different terminals, to improve channel utilization for the uplink and downlink shared channel.In 3GPP LTE system, as a Physical Resource Block (PRB), in a subframe, PRB is the least unit of uplink and downlink scheduling with 12 subcarriers.The transmission on shared channel of dispatching uplink and downlink data is come according to the service quality (QoS) of different business in the base station, and the authorization message of in the several OFDM of the beginning of descending sub frame (Orthogonal Frequency DivisionMultiplexing, OFDM) symbol, indicating uplink and downlink to dispatch with the L1/L2 control channel.Usually, authorization message comprises resource location, resource size and modulation coding mode (MCS) etc.Terminal (UE) judges whether the needs transceive data and how to carry out modulation and encoding and decoding according to the L1/L2 control channel.The indication of uplink and downlink scheduling authorization may be incorporated in the same L1/L2 control channel to be transmitted, and also may separately transmit.Fig. 2 illustrates the exemplary block diagram of a subframe in the 3GPP LTE system.
At present, 3GPP does not also provide the form of scheduling resource assignment signalling, and uplink and downlink scheduling authorization indication certainly all must comprise resource position field, with the original position of authorization by direction resource.Because each bit in the L1/L2 control channel of carrying scheduling resource assignment signalling is all very valuable, therefore, should reduce the scheduling resource assignment signalling as much as possible.
Summary of the invention
The purpose of this invention is to provide resource position field transmission method and device in a kind of resource allocation signal of the utilization ratio that can effectively improve the L1/L2 control channel.
For achieving the above object, the resource position field transmission method in the resource allocation signal of the present invention may further comprise the steps: step S302, and the minimum dimension of the resource position field in the resource allocation signal is determined in the base station according to system bandwidth and protection frequency bandwidth; Step S304, add resource location information in the resource allocation signal to according to determined minimum dimension the base station; Step S306, the base station sends resource allocation signal at down channel, and terminal is obtained the original position and/or the end position of authorization resources in up channel and/or down channel according to resource allocation signal.
Wherein, step S302 comprises: step S3022, obtain the quantity of a Physical Resource Block in the subframe according to system bandwidth and protection frequency bandwidth; And step S3024, obtain the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
Wherein, determine the quantity of a Physical Resource Block in the subframe according to following formula:
Wherein, N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards.
Determine the minimum dimension of resource position field needs in the resource allocation signal according to following formula:
R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards;
Expression rounds up.Described resource location is PRB starting position and/or end position and/or end position.
For solving the problems of the technologies described above, the present invention provides the transmitting device of the resource position field in a kind of resource allocation signal simultaneously, described device comprises: the size determination module is used for determining the minimum dimension of the resource position field of resource allocation signal according to system bandwidth and protection frequency bandwidth; Resource location information is added module, is used for adding resource location information to resource allocation signal according to determined minimum dimension; Signaling sends and receiver module, be used for the base station according to scheduling result in down channel transfer resource assignment signalling, and terminal is obtained the original position of authorization resources in up channel and/or down channel according to resource allocation signal.
Wherein, the size determination module comprises: Resource Block quantity determination module is used for obtaining the quantity of the Physical Resource Block of a subframe according to system bandwidth and protection frequency bandwidth; And resource location domain sizes determination module, obtain the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
Wherein, Resource Block quantity determination module is determined the quantity of a Physical Resource Block in the subframe according to following formula:
Wherein, N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards.
Wherein, resource location domain sizes determination module is determined the minimum dimension of resource position field needs in the resource allocation signal according to following formula:
Wherein, R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards;
Expression rounds up.Described resource location is PRB starting position and/or end position.
Above-mentioned resource position field transmission method and device are used for the LTE system.
The present invention proposes resource position field transmission method and device in a kind of resource allocation signal, determine the size of resource position field in the scheduling resource assignment signalling, thereby improve the utilization ratio of L1/L2 control channel effectively according to the system bandwidth situation.
Description of drawings
Fig. 1 is the structure chart of 3GPP LTE system;
Fig. 2 is the exemplary block diagram of a subframe in the 3GPP LTE system;
Fig. 3 is the flow chart of the resource position field transmission method in the resource allocation signal according to an embodiment of the invention;
Fig. 4 is the structure chart of the resource position field transmitting device in the resource allocation signal according to an embodiment of the invention;
Fig. 5 is the chart of scheduling resource assignment signalling form according to an embodiment of the invention.
Embodiment
Below in conjunction with corresponding accompanying drawing and specific embodiment resource position field transmission method and device in the resource allocation signal of the present invention are described in detail.
As shown in Figure 3, the resource position field transmission method in the resource allocation signal of the present invention may further comprise the steps: S302, portable terminal determine the minimum dimension of the resource position field in the resource allocation signal according to system bandwidth and protection frequency bandwidth; Step S304, add resource location information in the resource allocation signal to according to determined minimum dimension the base station; Step S306, terminal is obtained the original position of authorization resources in up channel and down channel according to resource allocation signal.
Wherein, step S302 comprises: step S3022, obtain the quantity of a Physical Resource Block in the subframe according to system bandwidth and protection frequency bandwidth; And step S3024, obtain the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
Wherein, determine the quantity of a Physical Resource Block in the subframe according to following formula:
Wherein, N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards.
Determine the minimum dimension of resource position field needs in the resource allocation signal according to following formula:
R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards;
Expression rounds up.Described resource location is PRB starting position and/or end position.
Fig. 4 is the structure chart of the resource position field transmitting device in the resource allocation signal of the present invention, as shown in Figure 4, resource position field transmitting device in the resource allocation signal of the present invention comprises: size determination module 402 is used for determining the minimum dimension of the resource position field of resource allocation signal according to system bandwidth and protection frequency bandwidth; Resource location information is added module 404, is used for adding resource location information to resource allocation signal according to determined minimum dimension; Signaling sends and receiver module 406, be used for the base station according to scheduling result in down channel transfer resource assignment signalling, and terminal is obtained the original position and/or the end position of authorization resources in up channel and/or down channel according to resource allocation signal.
Wherein, the size determining unit comprises 402: Resource Block quantity determination module 4022 is used for obtaining the quantity of the Physical Resource Block of a subframe according to system bandwidth and protection frequency bandwidth; And resource location domain sizes determination module 4024, obtain the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
Wherein, Resource Block quantity determination module is determined the quantity of a Physical Resource Block in the subframe according to following formula:
Wherein, N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards.
Wherein, resource location domain sizes determination module is determined the minimum dimension of resource position field needs in the resource allocation signal according to following formula:
Wherein, R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards;
Expression rounds up.Described resource location is PRB starting position and/or end position.
Further describe technical scheme of the present invention below.
Resource allocation signal must be indicated whole subframe, and the indication of position wherein is that unit indicates by PRB, so the resource location domain sizes in the resource allocation signal directly depends on the PRB quantity that can be used for transfer of data in the 3GPP LTE system in the single subframe.Yet because 3GPP LTE system can support multiple systems bandwidth such as 1.25MHz, 2.5MHz, 5MHz, 10MHz and 20MHz, therefore the PRB quantity that comprises in subframe is not fixed.Therefore, the resource location domain sizes in the 3GPPLTE system resource allocation signaling can not be fixed, and need determine according to 3GPP LTE system bandwidth and protection frequency bandwidth.Be to determine resource position field size calculation process in the resource allocation signal below according to described three aspects.
At first, can calculate the PRB quantity in the subframe according to system bandwidth, formula is as follows:
Wherein, N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards.
Because the scheduling resource assignment signalling in each subframe needs to indicate the authorization conditions of a subframe at least.Therefore, the resource position field in the scheduling resource assignment signalling should be represented 0～NPRB at least.According to the ability of binary representation, can use following formula to determine the size of resource position field in the scheduling resource assignment signalling:
R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBBe the PRB quantity in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a PRB;
Expression rounds downwards;
Expression rounds up.Described resource location is PRB starting position and/or end position.
For bandwidth is the 3GPP LTE system of 1.25MHz, supposes after the 3GPP that the protection bandwidth of regulation 1.25MHzLTE system is 150kHz (about each 5 subcarrier), and then the PRB quantity that has in a subframe of this system is
Further, can calculate resource position field in the scheduling resource assignment signalling size should for
If system dynamics scheduling FTP (file transfer protocol (FTP), File TransferProtocol) business, and supposition descending scheduling indication signaling adopts form shown in Figure 5, promptly except that territory, PRB starting position and PRB end position territory, also comprise MCS (Modulation and Coding Scheme, the Modulation Coding Scheme) territory of 2bit, the distribution duration (Assignment duration) of 2bit and the CRC territory of 16bit.Because there are 6 PRB in the 1.25MHz system in a subframe, therefore in this form, need to use 3bits to represent starting position and the end position of Resources allocation in subframe.
Those skilled in the art will readily understand additional advantages and modifications of the present invention.Therefore, above-mentioned at embodiment be described as the concrete Application Example of the present invention, the present invention aspect widely is not limited to the specific detail and the exemplary embodiments that illustrate and describe herein.Therefore, can under the condition that does not break away from by claim and the spirit or scope of the present invention that equivalent limited thereof, make various modifications.
Claims (10)
1. authorize the resource position field transmission method in the indication signaling for one kind, it is characterized in that: may further comprise the steps:
Step S302, the minimum dimension of the resource position field in the resource allocation signal is determined in the base station according to system bandwidth and protection frequency bandwidth;
Step S304, add resource location information in the resource allocation signal to according to determined minimum dimension the base station;
Step S306, the base station sends resource allocation signal at down channel, and terminal is obtained the original position and/or the end position of authorization resources in up channel and/or down channel according to resource allocation signal.
2. the resource position field transmission method in the mandate indication signaling as claimed in claim 1, it is characterized in that: step S302 comprises:
Step S3022 obtains the quantity of a Physical Resource Block in the subframe according to system bandwidth and protection frequency bandwidth;
Step S3024 obtains the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
3. the resource position field transmission method in the mandate indication signaling as claimed in claim 2 is characterized in that: the quantity of determining the Physical Resource Block in the described subframe according to following formula:
Wherein, N
PRBIt is a physical resource number of blocks in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a Physical Resource Block;
Expression rounds downwards.
4. the resource position field transmission method in the mandate indication signaling as claimed in claim 3 is characterized in that: the minimum dimension of determining resource position field needs in the resource allocation signal according to following formula:
R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBIt is a physical resource number of blocks in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a Physical Resource Block;
Expression rounds downwards;
Expression rounds up.
5. the resource position field transmission method in the mandate indication signaling as claimed in claim 4 is characterized in that: described resource location is Physical Resource Block starting position and/or end position.
6. authorize the resource position field transmitting device in the indication signaling for one kind, it is characterized in that: described device comprises: size determination module (402) is used for determining the minimum dimension of the resource position field of resource allocation signal according to system bandwidth and protection frequency bandwidth; Resource location information is added module (404), is used for adding resource location information to resource allocation signal according to determined minimum dimension; Signaling sends and receiver module (406), be used for the base station according to scheduling result in down channel transfer resource assignment signalling, and terminal is obtained the original position and/or the end position of authorization resources in up channel and/or down channel according to resource allocation signal.
7. the resource position field transmitting device in the mandate indication signaling as claimed in claim 6, it is characterized in that: described size determination module (402) comprising: Resource Block quantity determination module (4022) is used for obtaining the quantity of the Physical Resource Block of a subframe according to system bandwidth and protection frequency bandwidth; And resource location domain sizes determination module (4024), obtain the minimum dimension of resource position field needs in the resource allocation signal according to the quantity of the Physical Resource Block that obtains.
8. the resource position field transmitting device in the mandate indication signaling as claimed in claim 7 is characterized in that: described Resource Block quantity determination module (4022) is determined the quantity of a Physical Resource Block in the subframe according to following formula:
Wherein, N
PRBIt is a physical resource number of blocks in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a Physical Resource Block;
Expression rounds downwards.
9. the resource position field transmitting device in the mandate indication signaling as claimed in claim 8 is characterized in that: wherein, resource location domain sizes determination module (4024) is determined the minimum dimension of resource position field needs in the resource allocation signal according to following formula:
Wherein, R
Field-sizeBe the minimum dimension that resource position field in the scheduling resource assignment signalling needs, unit is bit; N
PRBIt is a physical resource number of blocks in the subframe; B
SystemAnd B
GuardBe respectively system bandwidth and system protection bandwidth, unit is kHz; B
PRBIt is the frequency bandwidth of a Physical Resource Block;
Expression rounds downwards;
Expression rounds up.
10. the resource position field transmitting device in the mandate indication signaling as claimed in claim 9 is characterized in that: described resource location is Physical Resource Block starting position and/or end position.
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