WO2013166962A1

WO2013166962A1 - Method for generating continuous resource allocation signaling and device thereof

Info

Publication number: WO2013166962A1
Application number: PCT/CN2013/075305
Authority: WO
Inventors: 曾可
Original assignee: 华为技术有限公司
Priority date: 2012-05-08
Filing date: 2013-05-08
Publication date: 2013-11-14
Also published as: CN103391177B; CN103391177A

Abstract

Disclosed is a method for generating continuous resource allocation signaling. The method comprises: a sending end determining a numerical value of a parameter N_RB according to the number of total resources in a system, and determining a numerical value of a parameter L_CRBs and a numerical value of a parameter RB_start according to the number and the position of the total resources occupied by continuous resources allocated to a target user equipment; and the sending end calculating RIV1 and RIV2, comparing a value of RIV1 with a value of RIV2, determining the smaller value as a value of a resource allocation signaling numerical value RIV, and sending the value to the user equipment. The solution may achieve technical effects of ensuring that an actual overhead of the resource allocation signaling is within a preset range and enabling the continuous resource allocation signaling numerical value to be more compact and reasonable.

Description

Method for generating continuous resource allocation signaling and device thereof

The present invention relates to the field of radio spectrum resource allocation, and more particularly to a method and apparatus for a network node to acquire an idle radio frequency. Background technique

In the current technology, there are mainly two ways of allocating physical channel resources. One is the way of centralized allocation (loca l izat ion), and the other is the way of discrete allocation (di s tr ibut ion ). The centralized allocation method is to divide the entire channel into several resource blocks, and each resource block is composed of white consecutive subcarriers. The method of discrete allocation is to allocate the data of each user equipment over the entire time frequency plane.

Orthogonal Frequency Division Multiple Access (OFDM) based technology is one of the major candidates for future wireless communication technologies. The scheme allocates a number of different subcarriers for different user equipments, which are allowed to overlap in the frequency domain but are always kept orthogonal to each other. One of the main disadvantages of 0FDMA is that it has a large peak-to-average ratio, which leads to a significant reduction in power amplifier efficiency. In order to overcome this shortcoming, and at the same time inherit the advantages of 0FDMA, the 3GPP Long Term Evolution (LTE) uplink uses a single carrier technology-DFT_s-OFDMA technology, that is, the user data first passes the DFT precoder. The output value after the DFT transform is the centralized allocation ( loca l izat ion ) on the subcarrier of (^03⁄4^. DFT _s -OFDMA technology is more sensitive to frequency deviation than the OFDMA technique, but it is more than the OF A technology. It has a lower peak-to-average ratio and has a better effect against multipath delay.

For a certain system bandwidth, H does not share N resource blocks, each resource block contains 12 subcarriers, and the resource allocation information includes two parameters: the starting resource block logical sequence number and the number of consecutively allocated resource blocks, respectively, using letters 0 and P to represent these two parameters. The corresponding control signaling needs to be able to represent all possible (0, P) combinations.

Conventional methods in the prior art (such as CN101405983A) use two binary numbers to represent 0 respectively. N (N + l) and P, the required signaling overhead is ceil (log ₂ NXN), but in reality there are only ² possibilities for the combination of ( 0, P ). In order to reduce the overhead of control signaling, one is based on A tree-shaped resource allocation method is proposed, and the corresponding signaling overhead is

N (N + 1)

Ceil (log2 ² ). Moreover, the method gives a corresponding formula for generating resource allocation signaling, as shown in FIG. 1, which is as follows: The transmitting end compares L _CRBs -l with "N _RB /21 if L _CRBs -l is greater than LN _RB /2", the value RIV of the resource allocation signaling is calculated, the RIV is N _RB (N _{RB -} L _CRBs + l) + (N _RB -l-RB _start ), otherwise, the RIV is

N _RB (L _CRBs -l) + RB _start; where:

N _RB is the total number of resource blocks in the system, L _CRBs is the number P of consecutive resource blocks allocated to the user equipment, and RB _start is the sequence number 0 of the starting resource block in the contiguous resource block allocated to the user equipment, and RIV indicates resource allocation. The binary value of the signaling. However, when N _RB is 5, L _CRBs is 4, and 1 _3⁄4 ^ is 1, since (4-1) = "5/21, the value of the resource allocation signaling calculated by this formula is 16 and needs to be It is represented by a 5-bit binary number. In fact, the representation of the signaling is only possible in 15 and can be fully represented by a 4-bit binary number.

The comparison file (CN101132267A) discloses a generation and resolution of continuous resource allocation signaling.

N (N + 1)

Therefore, the actual cost of resource allocation signaling is ceil (log2 ² ) and the continuous resource allocation signaling value is more compact and more reasonable. As shown in FIG. 2, the scheme is specifically changed by rounding up the judgment conditions L _CRBS -1 and (N _RB / ² ) ("N _RB /21" to L _CRB sl and (N _RB / ² ) The rounding down (LN _RB /2") is compared. The other method steps are exactly the same as those in the conventional method. However, the method in the comparison document CN 1011 32267 A is not the only one that can achieve the technical effect.

N (N + 1)

It is also possible to achieve the technical effect of ensuring that the actual overhead of resource allocation signaling is ceil (log2 ² ) and making the continuous resource allocation signaling values more compact and more reasonable. Summary of the invention

Embodiments of the present invention provide a method and apparatus for generating continuous resource allocation signaling that is completely different from the prior art, but can achieve the same effect. The solution provided by the embodiment of the present invention is as follows:

A method for generating continuous resource allocation signaling, the method comprising:

The transmitting end determines the value of the parameter N _RB according to the total number of resources in the system, and determines the values of the parameters 1_^ and RB according to the number and location of the total resources occupied by the continuous resources allocated to the target user equipment;

The N _RB represents the total number of resource blocks in the system, the L _CRBS represents the number of consecutive resource blocks allocated to the user equipment, and the RB _st w represents the sequence number of the starting resource block in the contiguous resource block allocated to the user equipment, RIV The value indicating the resource allocation signaling of the user equipment; the transmitting end calculates RIV1 and RIV2, where RIV1=N _RB (L _CRBs -1 ) + RB _START ,

RI V2=N _RB (NRB-LCRBS+1 ) + (NRB-1 -RB _START ); The sender compares the magnitudes of the RIV1 and RIV2 values, and determines the smaller of them as the value of the resource allocation signaling value RIV; The value RIV of the determined resource allocation signaling is sent to the user equipment as resource allocation signaling. A device for generating continuous resource allocation signaling, the device comprising:

The parameter determining unit is configured to determine a value of the parameter N _RB according to the total number of resources in the system, and determine a parameter according to the quantity and location of the total resource occupied by the continuous resource allocated to the target user equipment! Number of _^ and RB _st w Value

N _RB represents the total number of resource blocks in the system, L _CRBs represents the number of consecutive resource blocks allocated to the user equipment, and RB _st w represents the sequence number of the starting resource block in the contiguous resource block allocated to the user equipment, RIV a value indicating resource allocation signaling of the user equipment;

A calculation unit for calculating RIV1 and RIV2, where RIV1=N _RB (L _CRBs -1 ) +RB _start

RI V2=N _RB (NRB-LCRBS+1 ) + (NRB-1 -RB _START );

a comparison determining unit, configured to compare a size of the RIV1 and the RIV2 value; and determine a smaller value as a value of the resource allocation signaling value RIV; and a sending unit, configured to send the determined value of the resource allocation signaling to the user equipment RI V.

The embodiment of the invention provides a method and a device for generating continuous resource allocation signaling that are completely different from the prior art. With the solution, the actual cost of ensuring resource allocation signaling can also be ceil N (N + 1). )

(log2 2 ) and the technical effect of making the continuous resource allocation signaling values more compact and more reasonable. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below.

1 is a method for generating continuous resource allocation signaling in the prior art;

2 is a method for generating another continuous resource allocation signaling in the prior art;

3 is a method for generating continuous resource allocation signaling according to an embodiment of the present invention;

4 is a device for generating continuous resource allocation signaling according to an embodiment of the present invention;

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, one of ordinary skill in the art does not create All other embodiments obtained under the premise of sexual labor are within the scope of protection of the present invention. Suppose a communication system has a total of N _RB resource blocks, and the resource allocation information includes two parameters: the number of consecutive resource blocks allocated to the user equipment and the logical sequence numbers of the starting resource blocks in the consecutive resource blocks, respectively using the letter L _CRBs And RB _start to represent these two parameters, then the process of generating the value RIV of the resource allocation signaling of the present invention is as follows: The base station determines two values of L _CRBs and ! _3⁄4 ^, and determines the N _RB value according to the condition of the cell bandwidth, preferably, NR _B mainly takes one of 6 values of 6 15 25 50, 75 and 100. Calculate RIV1 and RIV2, where RIV1=N _RB (L -1 ) +RB _START and

RI V2=N _RB (NRB-LCRBS+1 ) + (NRB-1 -RB _START ); Compare the magnitudes of RIV1 and RIV2 values, and according to the comparison result, take the smaller value as the value of the final RIV; RIV=Min ( RIV1 , RIV2 ). Where: N _RB is the total number of resource blocks in the system, L _CRBS is the number of consecutive resource blocks allocated to the user equipment, and RB _START is the sequence number of the starting resource block in the contiguous resource block allocated to the user equipment. The binary resource allocation signaling value RIV is sent to the terminal as resource allocation signaling. By the above method, in the background art example (when N _RB is 5, 1_^ is 4, RB _start is 1), the problem of requiring a 5-bit binary number has been overcome, and the obtained RIV value is more compact. And reasonable.

Hereinafter, a detailed description will be made with reference to FIG. 3. FIG. 3 depicts a method of generating continuous resource allocation signaling according to an embodiment of the present invention. The specific process is as follows:

Step 301: The sender determines the value of the parameter N _RB according to the total number of resources in the system, and determines the parameter and the values of the L _CRBs and the RB _start according to the quantity and location of the total resource occupied by the continuous resource allocated to the target user equipment.

Step 302, calculating RIV1 and RIV2, where RIV1=N _RB (L -1 ) +RB _START , RI V2=N _RB (NRB-LCRBS+1 ) + (NRB-1 -RB _START ); Step 303, comparing the magnitudes of the RIV1 and RIV2 values in step 302;

Step 304: Determine a smaller value as the value of the resource allocation signaling RIV and send it to the user equipment.

The device for performing the foregoing method for generating a continuous resource allocation signaling is shown in FIG. 4, and is located at a transmitting end, and includes a parameter determining unit, a calculating unit, a comparison determining unit, and a sending unit, where:

The parameter determining unit is configured to determine a value of the parameter NRB according to the total number of resources in the system, and determine a value of the parameter L _eRB oRB _st according to the quantity and location of the total resource occupied by the continuous resource allocated to the target user equipment;

The calculating unit is configured to calculate RIV1 and RIV2, where RIV1=N _RB (L _CRBs -1)+RB _start ;

RI V2=N _RB (N _R B-LCRBS+1 ) + (NRB-1 -RB _START ); the comparison determining unit is configured to compare the magnitudes of the RIV1 and RIV2 values; and determine the smaller one as the resource allocation The value of the signaling RIV;

The sending unit is configured to send, by the user equipment, the value RIV of the determined resource allocation signaling. The present invention mainly has the following effects:

Compared with the comparison document CN101132267A, the embodiment of the present invention provides another completely different technical solution, which can achieve the same effect as the comparison file CN101132267A, that is, to ensure resource allocation.

N (N + 1)

The actual overhead of signaling is ceil (log2 ² ) and the continuous resource allocation signaling values are more compact and more reasonable. For the target user equipment, it receives the RIV value, that is, the corresponding method and formula described in the prior art (such as CN101405983A or CN101132267A), and the corresponding 1_^ and

RB _START to get the correct resource block. It will not be detailed here. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should The scope of protection of the claims is subject to the claims.

Claims

Rights request

1. A method for generating continuous resource allocation signaling, characterized in that the method includes: The transmitting end determines the value of the parameter N _RB based on the total number of resources in the system and occupies the total number of resources based on the continuous resources allocated to the target user equipment. and the values of position determination parameters 1_^ and RB _st w;

Among them, N _RB represents the total number of resource blocks in the system, _RBs represents the number of consecutive resource blocks allocated to the user equipment, RB _START represents the sequence number of the starting resource block in the continuous resource blocks allocated to the user equipment, and RIV represents the user The value of the device's resource allocation signaling; the sending end calculates RIV1 and RIV2, where RIVl=N _RB (L _CRBS -1) +RB _start ,

RI V2=N _RB (RB-LCRBS+1) + (NRB-1 -RB _START ); The sending end compares the values of RIV1 and RIV2, and determines the smaller value as the value of the resource allocation signaling value RIV; The sending end The determined value RIV of resource allocation signaling is sent to the user equipment as resource allocation signaling.

2. A method for generating continuous resource allocation signaling according to claim 1, wherein the N _RB is any one of six values: 6, 15, 25, 50, 75 and 100.

3. A device for generating continuous resource allocation signaling, characterized in that the device includes: a parameter determination unit, configured to determine the value of the parameter N _RB based on the total number of resources in the system and the continuous resource occupancy allocated to the target user equipment. The number and location of the total resources determine the values of the parameters L _ERBS and RB _st w;

Among them, N _RB represents the total number of resource blocks in the system, _RBs represents the number of consecutive resource blocks allocated to the user equipment, RB _START represents the sequence number of the starting resource block in the continuous resource blocks allocated to the user equipment, and RIV represents the user The value of the device’s resource allocation signaling;

Calculation unit, used to calculate RIV1 and RIV2, where RIVl=N _RB (L _CRBS -1) +RB _start

RI V2=N _RB (N _R B-LCRBS+1 ) + (NRB-1 -RB _START ); A comparison and determination unit, used to compare the values of RIV1 and RIV2; and determine the smaller value as the value of the resource allocation signaling value RIV;

A sending unit, configured to send the value RIV of the determined resource allocation signaling to the user equipment.

4. A device for generating continuous resource allocation signaling according to claim 3, characterized in that the N _RB is any one of six values: 6, 15, 25, 50, 75 and 100.