CN101155383B - Indication method of resource allocation information and transmission method and device of indication information - Google Patents

Abstract

The present invention discloses a method for indicating resource allocation information of scheduling signaling in a communication system, and a method and device for transmitting resource allocation indication information, including: determining the position of the first physical resource unit allocated to user equipment; The user equipment determines the bit sequence according to the allocation of the physical resource units after the first physical resource unit; sends the bit sequence to the user equipment; and the user equipment determines the physical resource unit allocated to itself according to the bit sequence. According to the characteristics of the existing resource allocation instruction information, the present invention reduces unnecessary redundant information, thereby reducing signaling overhead.

Description

Indication method of resource allocation information and transmission method and device of indication information

technical field

The invention relates to communication physical layer technology, in particular to an indication method of resource allocation information, and a transmission method and device for resource allocation indication information.

Background technique

Scheduling signaling in High Speed Downlink Packet Access (HSDPA, High Speed Downlink Packet Access) technology. In the existing HSDPA technology, multiple user data are multiplexed on physical resources with a certain definite range, and different time transmission units can multiplex different users. In order to enable users to accurately receive the data sent by the base station, the base station needs to notify the user in advance of certain signaling related to data reception. These signalings are called scheduling signaling, and the scheduling signaling includes:

Resource allocation indication information, 7 bits;

User Equipment IDentity (UE ID, User Equipment IDentity), 16 bits.

Among them, the resource allocation indication information refers to the location and size information of the physical resources occupied by the data issued by the base station. The purpose of notifying these information is to enable the user to receive the data at the corresponding physical resource location; the UE ID is the system ID code that uniquely identifies a certain UE.

When the scheduling signaling is sent by the base station, the user first identifies the UE ID information, and confirms whether there is his own information in the scheduling signaling. If so, the corresponding time transmission unit is determined according to the information bit group, and the base station sends it to The location and size information of the physical resources occupied by its own data, so as to ensure that the data can be received correctly and restore the original information.

At present, there is a method of using a bitmap for resource allocation indication. Figure 1 is a schematic diagram of the resource allocation indication information of the bitmap. As shown in the figure, the resource allocation indication information of each UE uses a bitmap (bitmap): Suppose The system has N physical resource units (RU, Resource Unit) available for allocation (set the starting point as physical resource unit 1, and follow-up descriptions shall be based on this), and each physical resource unit corresponds to 1 bit. If a physical resource unit If it is allocated to the UE, the corresponding bit is set to 1; if it is not allocated to the UE, the bit is set to 0 (or vice versa, and the following only uses this setting as an example). The resource allocation indication information is placed on the first physical resource unit allocated to the UE. Boxes with different labels represent physical resource units allocated to different UEs, and the lower part is the bitmap of the corresponding resource allocation indication information of the UE. Different arrows indicate where the bitmap is placed.

Starting from the first physical resource unit, each UE detects and matches the physical resource units one by one, and judges whether there is its own related resource allocation indication information. Once the matching is successful, it assumes that this is the first physical resource unit allocated to itself, and the detection and matching process ends. The resource allocation indication information is decoded, and the subsequent allocation of physical resource units is obtained through the information in the bitmap.

As shown in UE 2 in Figure 1, the physical resource unit 2 of the system is judged to be the first physical resource unit allocated to itself through UE ID matching, and then by decoding the resource allocation indication information bitmap, according to the setting of each bit, it can be obtained Outgoing system physical resource units 2, 3, 5, and 7 are physical resource units allocated to itself.

In the prior art, the resource allocation indication information of each UE is placed on the first physical resource unit allocated to the UE, assuming that the first physical resource unit allocated to the UE is the physical resource unit n in the system, then The first n bits in the bitmap information must be 0...01, as shown in the arrow and the bits before the arrow in Figure 1. In the actual scheduling signaling transmission, once the user matches its own resource allocation indication information on a certain physical resource unit (n), then the first n bits are fixed sequence as known information, and are transmitted in the scheduling signaling Known information is obviously a waste, that is, the scheduling signaling in the prior art has unnecessary overhead.

Rate matching means that the original bit sequence output by the channel encoder has a fixed coding rate, which may be different from the coding rate required in the actual physical channel. Therefore, some bits in the original bit sequence need to be repeated or chiseled out. Rate matching means that the original bit sequence is repeated (Repeating) or punctured (Puncturing) so that the channel mapping can reach the bit rate required by the transmission format. "Hole hole" is to chisel out bits at certain positions according to a certain algorithm; "repeat" is to insert repeated bits at certain positions according to a certain algorithm.

That is, a certain channel-coded bit sequence is transformed into a target length or redundancy sequence through regular repetition or punching. If the input sequence is a 1/3 coded sequence, it is transformed into a 1/2 coded sequence by puncturing; similarly, the input is 100 coded bits, which are transformed into 80 bits by puncturing.

Contents of the invention

The present invention provides a method and device for transmitting resource allocation indication information in a communication system, which is used to solve the problem of unnecessary overhead of scheduling signaling in the communication system in the prior art.

In the present invention, by summarizing the rules of resource allocation indication information, a method for indicating resource allocation using less information is provided, and further provides a transmission method for the resource allocation indication information indicated by this method and devices.

The present invention also provides a method for transmitting resource allocation indication information in a communication system, and the technical solution includes the following steps:

determining the location of the first physical resource unit allocated to the user equipment;

For the user equipment, determine a bit sequence according to the allocation of physical resource units subsequent to the first physical resource unit;

sending the bit sequence to the user equipment;

The user equipment determines the physical resource units allocated to itself according to the bit sequence.

Preferably, the sending the bit sequence to the user equipment includes the following steps:

The bit sequence is changed into a standard bit sequence length through rate matching and then sent to the user equipment.

Preferably, the sending the bit sequence to the user equipment includes the following steps:

Copy the bit sequence to the same length as the standard bit sequence;

Sending the copied bit sequence to the user equipment.

Preferably, the copying is performed sequentially according to the bit order of the bit sequence until it is equal to the length of the standard bit sequence.

Preferably, the bit sequence is a bitmap.

The present invention also provides a transmission device using a resource allocation instruction information method, including user equipment, and further including:

A first determining module, configured to determine the position of the first physical resource unit allocated to the user equipment;

The second determining module is configured to, for the user equipment, determine a bit sequence according to the allocation of physical resource units subsequent to the first physical resource unit;

a transmission module, configured to send the bit sequence to the user equipment;

The user equipment determines the physical resource units allocated to itself according to the bit sequence.

Preferably, the transmission module includes a rate matching unit and a sending unit, wherein:

A rate matching unit is used to change the bit sequence into a standard bit sequence length through rate matching;

A sending unit, configured to send the matched bit sequence to the user equipment.

Preferably, the transmission module includes a repeated setting unit and a sending unit, wherein:

A repeated setting unit is used to sequentially copy the bit sequence according to the bit sequence of the bit sequence to the same length as the standard bit sequence;

A sending unit, configured to send the copied bit sequence to the user equipment.

Preferably, said bit sequence is a bitmap.

The beneficial effects of the present invention are as follows:

In the present invention, according to the characteristics of the existing resource allocation indication information, unnecessary redundant information is reduced, thereby reducing signaling overhead.

Description of drawings

FIG. 1 is a schematic diagram of resource allocation indication information of the bitmap described in the background art;

FIG. 2 is a schematic diagram of resource allocation indication information of the bitmap described in the embodiment;

FIG. 3 is a schematic diagram of a transmission process of resource allocation indication information in the embodiment;

FIG. 4 is a schematic diagram of resource allocation indication information of the copied bitmap in the embodiment;

FIG. 5 is a schematic structural diagram of a transmission device using the resource allocation indication information method described in the embodiment.

Detailed ways

The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

For ease of understanding, a bitmap is used for description in the specific implementation, that is, a bit sequence diagram corresponding to the allocation of physical resource units. In the prior art, the resource allocation indication information of each UE is placed on the first physical resource unit allocated to the UE, assuming that the first physical resource unit allocated to the UE is the physical resource unit n of the system, then The first n bits in the bitmap information must be 00...01. During the actual scheduling signaling transmission, once the user matches its own resource allocation indication information on a certain physical resource unit (n), then the first n bits The bit sequence corresponding to each physical resource unit is a fixed sequence, which is known information. Therefore, the present invention does not transmit known information during the actual transmission of resource allocation indication information, but only transmits the corresponding bitmap setting after the first physical resource unit allocated from each UE. That is, if the number of physical resource units available for allocation in the system is N, and the first physical resource unit allocated to a certain UE is system physical resource unit n, the information to be transmitted starts from bit n+1 (N-n) bits of information.

The inventive concept will be further described below in conjunction with the accompanying drawings. FIG. 2 is a schematic diagram of resource allocation indication information of a bitmap in the present invention. As shown in the figure, the first physical resource unit allocated to UE 1 is physical resource unit 1, The first physical resource unit allocated to UE 2 is physical resource unit 2, and the first physical resource unit allocated to UE 3 is physical resource unit 6. In conjunction with Fig. 1, for the convenience of description, the bit sequence transmitted in the prior art is defined as the first bit sequence, and the bit sequence transmitted in the present invention is the second bit sequence, then the first bit sequence is respectively: UE 1: 1001000000, UE 2: 0110101000, UE 3: 0000010111; as can be seen from Figure 2, the second bit sequence in the present invention, that is, the bit sequence after the first physical resource unit is: UE 1: 001000000; UE 2: 10101000; UE3: 0111. Obviously, the present invention solves the technical problem of reducing unnecessary overhead in scheduling signaling by reducing the transmission of known information.

According to the above technical concept, the present invention provides a method for indicating resource allocation information in a communication system. During implementation, first determine the position of the first physical resource unit allocated to the user equipment;

For the user equipment, a bit sequence is determined according to the determined allocation of physical resource units after the first physical resource unit.

The resource allocation information can be indicated by using the bit sequence. It can be seen that the indication method of the present invention is simpler than the prior art, and the number of bits used for indicating information is saved.

According to the technical concept above, the present invention also provides a method for transmitting resource allocation instruction information in a communication system. Fig. 3 is a schematic diagram of the transmission process of resource allocation instruction information in the present invention, as shown in the figure, including the following steps:

Step 301. Determine the location of the first physical resource unit allocated to the user equipment;

Step 302. For the user equipment, determine a second bit sequence according to the allocation of physical resource units after the first physical resource unit determined in step 301;

Step 303, sending the second bit sequence to the user equipment;

Step 304, the user equipment determines the physical resource unit allocated to itself according to the second bit sequence.

The specific implementation process is described below.

Since the position of the bit sequence placed according to the bitmap is different, the length will fluctuate to a certain extent. Although the length is variable, it can be calculated and will not cause mis-decoding by the receiving UE. Therefore, during implementation, no processing is required, and the length of the bit sequence placed according to the bitmap is allowed to fluctuate. Each UE matches physical resource units one by one whether it has its own physical resource allocation indication information. Only when matching system physical resource unit n, the length of the bitmap is according to ( N-n) calculation.

In a preferred implementation, flexible rate matching can be used to ensure that the bit sequences are all of equal length.

During implementation, since the length of the scheduling signaling needs to be consistent, flexible rate matching can be adopted to ensure that no matter which physical resource unit the bit sequence is placed on, it will be channel coded and rate matched with other information in the scheduling signaling. Signaling is of equal length.

In view of this, step 303 can be realized as follows:

After the second bit sequence is included in the scheduling signaling resource allocation indication information, the scheduling signaling is sent to the user equipment after being rate-matched to be equal in length to the standard scheduling signaling.

In preferred implementation, step 303 can also be implemented in the following manner:

copying the second bit sequence to the same length as the first bit sequence;

Send the copied second bit sequence to the user equipment.

The duplication may be sequentially duplicated according to the bit sequence of the second bit sequence until the length is equal to that of the first bit sequence.

In the implementation, the last (N-n) bits are simply repeated to the first n positions until they are full. When N-n>=n, repeat n bits of N-n, and which n bits can be agreed upon by both parties; when N-n<n, repeat the last N-n bits multiple times until they are full. Figure 4 is a schematic diagram of the resource allocation indication information of the copied bitmap. As shown in the figure, the sequence copied according to the second bit sequence is: UE 1: 0001000000; UE 2: 1010101000; UE 3: 0111010111.

According to the above inventive concept, the present invention also provides a transmission device using a resource allocation indication information method, and the specific implementation of the device will be described below with reference to the accompanying drawings.

FIG. 5 is a schematic structural diagram of a device for transmitting resource allocation indication information. As shown in the figure, the device includes a user equipment, a first determining module 501 , a second determining module 502 , and a transmitting module 503 .

The first determining module determines the position of the first physical resource unit allocated to the user equipment;

The second determination module determines the bit sequence for the user equipment according to the allocation of physical resource units subsequent to the first physical resource unit.

The transmission module sends the bit sequence to the user equipment;

The user equipment determines the physical resource unit allocated to itself according to the bit sequence.

In a preferred implementation, the transmission module may include a rate matching unit and a sending unit. After the rate matching unit rates-matches the bit sequence into a standard bit sequence length, the sending unit sends the matched bit sequence to the user equipment. It is used to ensure that various protocols are satisfied during implementation, so that the length of the bit sequence remains consistent.

In another preferred implementation, the transmission module may include a repeated setting unit and a sending unit. The repeated setting unit copies the bit sequence to the same length as the standard bit sequence according to the order of the bits in the bit sequence; the sending unit sends the repeated setting to the user equipment. The sequence of bits after the bit cell is set.

It can be seen from the above implementation that the present invention reduces unnecessary redundant information according to the characteristics of the existing resource allocation indication information, thereby effectively reducing signaling overhead.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (9)

1. the transmission method of resource allocation indication information in the communication system is characterized in that, comprises the steps:

Determine to distribute to the position of first physical resource unit of subscriber equipment;

To described subscriber equipment, determine bit sequence according to the distribution condition of the physical resource unit after described first physical resource unit;

Send described bit sequence to described subscriber equipment;

Described subscriber equipment determines to distribute to the physical resource unit of oneself according to described bit sequence.

2. the method for claim 1 is characterized in that, describedly sends described bit sequence to subscriber equipment, comprises the steps:

Described bit sequence through-rate coupling is become standard bits sequence length rear line equipment to be sent.

3. the method for claim 1 is characterized in that, describedly sends described bit sequence to subscriber equipment, comprises the steps:

Be copied to the standard bits sequence bit sequence isometric;

Bit sequence after subscriber equipment sends described duplicating.

4. method as claimed in claim 3 is characterized in that, described duplicating is that bit-order by bit sequence is copied to the standard bits sequence isometric successively.

5. as the described method of one of claim 1 to 4, it is characterized in that described bit sequence is a bit map.

6. one kind is used the resource allocation indication information transmitting device of method according to claim 1, comprises subscriber equipment, it is characterized in that, also comprises:

First determination module, be used to determine distribute to the position of first physical resource unit of subscriber equipment;

Second determination module, be used for, determine bit sequence according to the distribution condition of the physical resource unit after described first physical resource unit to described subscriber equipment;

Transport module, be used for sending described bit sequence to described subscriber equipment;

Described subscriber equipment determines to distribute to the physical resource unit of oneself according to described bit sequence.

7. transmitting device as claimed in claim 6 is characterized in that described transport module comprises rate-matched unit, transmitting element, wherein:

The rate-matched unit is used for bit sequence through-rate coupling is become the standard bits sequence length;

Transmitting element is used for the bit sequence after subscriber equipment sends described coupling.

8. transmitting device as claimed in claim 6 is characterized in that, described transport module comprises repetition set unit, transmitting element, wherein:

Repeat the set unit, be used for successively being copied to standard bits sequence isometric by the bit-order of bit sequence bit sequence;

Transmitting element is used for the bit sequence after subscriber equipment sends described duplicating.

9. as the described transmitting device of one of claim 6 to 8, it is characterized in that described bit sequence is a bit map.

Images