WO2015017966A1

WO2015017966A1 - Bit information processing method, device and system

Info

Publication number: WO2015017966A1
Application number: PCT/CN2013/080841
Authority: WO
Inventors: 孙方林
Original assignee: 华为技术有限公司
Priority date: 2013-08-05
Filing date: 2013-08-05
Publication date: 2015-02-12
Also published as: CN104541486B; CN104541486A

Abstract

Embodiments of the present invention disclose a bit information processing method, device and system for reducing the transmitted data volume and avoiding waste of subcarrier capacity resources during bit table interaction. In the embodiments of the present invention, the method comprises the steps of respectively determining the number of bits borne by each subcarrier cluster in a used spectrum; grouping subcarrier clusters in the used spectrum according to the subcarrier cluster index of each subcarrier cluster and the determined number of the bits borne by each subcarrier cluster to obtain a plurality of subcarrier groups, wherein the subcarrier cluster indexes of the subcarrier clusters in each subcarrier group are continuous and the subcarrier clusters bear the same number of bits; and sending bit information borne by each subcarrier group to opposite-end network equipment, thus completing interaction of bit tables. By adopting the present invention, the device and the system, the data transmission volume can be reduced, and resource waste can be avoided.

Description

The present invention relates to the field of communications technologies, and in particular, to a bit information processing method, apparatus, and system. Background technique

In a multi-carrier communication system such as OFDM (Orthogonal Frequency Division Multiplexing), in order to simplify the implementation of the system, the same modulation mode is used on each subchannel or carrier, but if there are individual poor subchannels or The carrier will cause the system error performance to deteriorate. Therefore, how to properly allocate the information bearing capacity of each subchannel or carrier according to the channel conditions of each subchannel or carrier becomes a key issue.

In the OFDM system, an adaptive technique is applied, and each subcarrier is allocated a different number of information bits in each OFDM symbol period according to the instantaneous characteristics of the channel, and a corresponding modulation and demodulation mode is adopted to reasonably allocate information of each subchannel or carrier. The carrying capacity, where the subcarrier is a waveform for modulating a normal signal and having a certain frequency. Specifically, in the OFDM system, the receiving end network device calculates a signal to noise ratio of the received signal according to the received signal, and calculates a number of bits that can be carried by each subchannel or subcarrier according to the calculated signal to noise ratio, and calculates all subcarriers. The number of bearable bits is notified to the transmitting end network device in the form of a bit table, and the transmitting end network device can select to perform a bit table sent by the receiving end network device or the transmitting end network device modifies the table and interacts with the receiving end network device. Finally, the transmitting and receiving parties perform modulation and demodulation according to the bit table of the interaction, so there is a process of bit table interaction in the OFDM system applying the adaptive technique.

In the prior art, the bit information processing method for performing bit table interaction mainly has the following processing methods:

The first type of processing: the receiving end network device and the transmitting end network device perform bit table interaction according to the original format of each subcarrier in the bit table, that is, the number of bits carried by each subcarrier in the bit table needs to be transmitted. With this type of transmission, the amount of data transmitted when the bit table is interactive is large.

The second way of handling:

According to the number of subcarriers in the bit table, all the subcarriers are grouped according to the fixed number of subcarriers, and each subcarrier in the group carries the same number of bits according to the principle of low, and the receiving network device and the transmitting network device pass The number of bits carried in each subcarrier group is transmitted, and the bit table is exchanged. For example, when the carrier group is divided into groups of four subcarriers, the number of bits actually carried by each subcarrier in one subcarrier group is 2 bits and 2 bits, respectively. 3bit and 4bit, then the number of bits carried by each subcarrier in the group is 2bit according to the low principle. When performing bit table interaction, only the transmission can indicate that the group includes 4 subcarriers, and each subcarrier carries 2 bits of information. The interaction mode can reduce the amount of data transmitted when the bit table is exchanged to some extent. However, the number of bits that can be actually carried by each subcarrier in the subcarrier group may be different. According to the above interaction mode, the lowest bit needs to be taken. The number is the number of bits carried by each subcarrier in the subcarrier group, so that the subcarriers that can carry a larger number of bits need to follow the principle of low, resulting in waste of subcarrier capability resources.

Therefore, how to reduce the amount of data transmitted when the bit table is exchanged and to avoid the waste of sub-carrier capability resources has become one of the urgent problems to be solved. Summary of the invention

The embodiment of the invention provides a bit information processing method, device and system, which can reduce the amount of data transmitted and avoid waste of subcarrier capability resources when performing bit table interaction.

In a first aspect, a bit information processing method is provided, including:

Determining, respectively, the number of bits carried by each subcarrier cluster in the spectrum, wherein the subcarrier cluster includes at least one subcarrier;

And subcarrier clusters in the used spectrum are grouped according to the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster, to obtain a plurality of subcarrier groups, wherein each subcarrier group in each subcarrier group The subcarrier cluster index is continuous and the number of bits carried is the same;

For each subcarrier group, the bit information carried by the subcarrier group is sent to the peer network device, where the bit information carried by each subcarrier group is used to determine the subcarrier clusters included in the current subcarrier group. The information of the number and the information of the same number of bits carried by the subcarrier clusters in the group, the peer network device is a network device that performs bit information interaction with the network device that currently performs bit information processing.

In combination with the first aspect, in the first possible implementation, before grouping the subcarrier clusters in the used spectrum, the method further includes:

The subcarrier clusters having different bearer bits in the set frequency range included in the used spectrum are preprocessed to obtain a subcarrier cluster having the same number of bearers.

With reference to the first aspect, or in combination with the first possible implementation manner of the first aspect, in the second possible implementation manner, after grouping the subcarrier clusters in the used spectrum, the method further includes:

Among the obtained subcarrier groups, if there are two subcarrier component groups including subcarrier clusters carrying the same number of bits, there are several consecutive subcarrier cluster indexes of the subcarrier clusters included in the two subcarrier groups. For the unused subcarriers, the two subcarrier groups and the plurality of unused and frequency consecutive subcarriers are re-divided into one subcarrier group as the finally obtained subcarrier group.

With reference to the first aspect, in a third possible implementation manner, determining the number of bits carried by each subcarrier cluster separately includes:

Determining, according to the signal-to-noise ratio SR of the received signal, the number of bits that each subcarrier cluster can carry; or determining each subcarrier according to information sent by at least two network devices using the number of bearable bits per cluster of subcarriers in the same frequency range The number of bits carried by the cluster, wherein the determined number of bits that each subcarrier cluster can carry is the number of bits that the at least two network devices can support to transmit and receive.

In a second aspect, a bit information processing apparatus is provided, including: a determining unit, a grouping unit, and a sending unit, wherein:

a determining unit, configured to separately determine a number of bits carried by each subcarrier cluster in the frequency borrowing, where the subcarrier cluster includes at least one subcarrier, and send the determined number of bits carried by each subcarrier cluster to the packet Unit

a grouping unit, configured to receive a number of bits carried by each subcarrier cluster sent by the determining unit, and according to a subcarrier cluster index according to each subcarrier cluster and a determined number of bits carried by each subcarrier cluster, Subcarrier clusters are grouped to obtain several subcarrier groups, and the packets are grouped Each subcarrier group obtained is sent to the sending unit, where a subcarrier cluster index of each subcarrier cluster in each subcarrier group is consecutive and the number of bits carried is the same;

a sending unit, configured to receive each sub-carrier group obtained by the grouping of the grouping unit, and send the bit information carried by the grouping unit to the peer network device, where the bit information carried by each sub-carrier group is used for Determining information about the number of subcarrier clusters included in the current subcarrier group, and information of the same number of bits carried by the subcarrier clusters in the group, where the peer network device performs bit information interaction with the network device currently performing bit information processing. Internet equipment.

With reference to the second aspect, in a first possible implementation, the grouping unit is further configured to: in a set spectrum range included in the used frequency borrowing before grouping the subcarrier clusters in the used spectrum The subcarrier clusters with different number of bearers are preprocessed to obtain subcarrier clusters with the same number of bearers.

With reference to the second aspect, or in combination with the first possible implementation of the second aspect, in a second possible implementation, the grouping unit is further configured to:

After grouping the subcarrier clusters in the spectrum, in the obtained thousands of subcarrier groups, if two subcarrier groups containing subcarrier clusters carrying the same number of bits exist between the two subcarrier groups The subcarrier cluster of the included subcarrier cluster indexes a plurality of consecutive unused and frequency contiguous subcarriers, and then the two subcarrier groups and the plurality of unused and frequency consecutive subcarriers are re-divided into one sub-carrier. Carrier group, as the resulting subcarrier group.

With reference to the second aspect, in a third possible implementation, the determining unit is configured to: determine, according to a signal to noise ratio SR of the received signal, a number of bits that each subcarrier cluster can carry; or according to at least two network devices The number of bits that can be carried by each of the subcarrier clusters is determined by using the information of the number of bits that can be carried by each of the subcarrier clusters in the same frequency range, wherein the determined number of bits that each subcarrier cluster can carry is the at least two networks. The device can support the number of bits sent and received.

In a third aspect, a bit information processing system is provided, including a first network device and a second network device, where

The first network device is the above bit information processing device;

Transmitting, by the first network device, bit information carried by the first network device to each subcarrier group The second network device, where the bit information is information used to indicate the number of subcarrier clusters included in the current subcarrier group and the same number of bits carried by the subcarrier clusters in the group.

The second network device receives bit information that is sent by the first network device for each subcarrier group, and determines, according to the received bit information, the number of subcarrier clusters included in each subcarrier group, and the intra-group sub- The same number of bits carried by the carrier cluster.

The bit information processing method provided by the first aspect of the present invention, the bit information processing apparatus provided by the second aspect, and the bit information processing system provided by the third aspect, according to the subcarrier cluster index of each subcarrier cluster including at least one subcarrier and each The number of bits actually carried by the subcarrier clusters is divided into a group of subcarrier clusters with consecutive subcarrier cluster indexes and the same actual number of bearers. The number of bits carried by each subcarrier cluster in the group is the same but is actually carried. The number does not cause waste of the subcarrier resources. For each subcarrier group obtained by the packet, the information for determining the number of subcarrier clusters included in the subcarrier group and the same number of bits carried by the subcarrier clusters in the group are used by interaction ( That is, the number of subcarriers and the same number of bits are transmitted to complete the interaction of the bit table, and the amount of information transmission when the bit table is interactive can also be reduced. DRAWINGS

1 is a schematic diagram of an S R curve during coaxial transmission in an OFDM system;

2 is a schematic diagram of an SNR curve during transmission of a twisted pair in an OFDM system;

3 is a schematic flowchart of a bit information processing method according to an embodiment of the present invention;

4 is a schematic diagram of a subcarrier bearer distribution;

FIG. 5 is a schematic diagram of the bit bearer situation in FIG. 4 divided according to the principle of consecutively carrying the same bit;

6 is a schematic diagram of subcarrier grouping blurring processing;

FIG. 7 is another schematic diagram of the bit bearer situation in FIG. 4 divided according to the principle of continuous and carrying the same bit;

8A-8B are schematic diagrams of subcarrier grouping when the frequency segment is not used in the frequency spectrum;

9 is a schematic diagram of an information interaction format in a bit information transmission process; 10 is a schematic structural diagram of a bit information processing apparatus according to an embodiment of the present invention; FIG. 11 is a schematic structural diagram of a network controller according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a bit information processing system according to an embodiment of the present invention. detailed description

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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

The bit-bearing distribution of sub-carriers in OFDM systems generally exhibits regular frequency-selective attenuation characteristics, as shown in Figure 1 and Figure 2, respectively, for signal-to-noise during coaxial line and twisted-pair transmission bitstream in OFDM systems. Schematic diagram of the distribution curve of SR, as shown in Fig. 1 and Fig. 2, the linear characteristic of frequency selective attenuation is obvious, whether it is coaxial channel response or channel response in twisted pair, SNR (Signal Noise Ratio) Only ldB SNR jitter, from the distribution curve diagram of SR in Figure 2, SN only differs by 5dB in the frequency range of 200~400Mhz, so the inner band of the frequency band is calculated according to Shannon's theorem formula =log ₂ (l + SW3⁄4) The number of bits carried by the carrier is only a difference of 2 bits at most.

The number of bits carried by the adjacent subcarriers in the bit-bearing distribution according to the frequency-selective attenuation characteristic is relatively close, and the difference is not very large. In this embodiment of the present invention, the sub-carrier with the same carrier frequency and the actual number of bits is actually applied. Dividing into a carrier group, by performing the information for determining the number of carriers in each subcarrier group and the same number of bits carried by the subcarriers in the carrier group, the bit table is exchanged, and the amount of data transmitted when the bit table is exchanged can be reduced, and Can reduce the waste of carrier resources.

Embodiment 1

A first embodiment of the present invention provides a bit information processing method, as shown in FIG. 3, including:

S101: Determine the number of bits carried by each subcarrier cluster in the spectrum respectively.

Specifically, in the OFDM system, information is provided for the receiving network device and the transmitting network device. During the interaction, in the process of assigning different information bits to each subcarrier in the frequency used in common, bit allocation may be performed in units of each subcarrier, and several subcarriers may be allocated as a minimum allocation unit, each minimum The subcarriers in the allocation unit carry the same number of bits, and each of the smallest allocation units has the same number of subcarriers. Therefore, in the embodiment of the present invention, the bit allocation is performed in units of subcarrier clusters, where the subcarrier cluster includes at least one subcarrier. Carrier, and each subcarrier cluster has the same number of subcarriers.

Further, when determining the number of bits that can be carried by each subcarrier cluster in the spectrum, the receiving network device or the transmitting network device in the embodiment of the present invention can determine the number of bits that each subcarrier can bear according to Shannon's theorem. When more than one subcarrier is included in the carrier cluster, the number of bits respectively carried by each subcarrier included in each subcarrier cluster may be determined, and the number of bits respectively carried by each subcarrier included in each subcarrier cluster is determined as Corresponding to the number of bits carried by the subcarrier cluster.

In the embodiment of the present invention, the receiving end network device or the transmitting end network device, the bit carrier distribution of the determined subcarrier cluster exhibits a regular frequency selective fading characteristic, for example, the subcarrier cluster bit bearer distribution shown in FIG. Subcarrier cluster index 1~29, carrying 8 bits; subcarrier cluster index 30-32, carrying 7 bits; subcarrier cluster index 33-36, carrying 8 bits; subcarrier cluster index 37-39, carrying 7 bits; subcarrier Cluster index 40~41, carrying 8 bits; subcarrier cluster index 42~64, carrying 7 bits, wherein each subcarrier cluster index in the bit allocation process has its corresponding carrier frequency, for example, the subcarrier cluster contains one When the subcarriers are used, the subcarrier cluster index corresponds to one frequency, and when the subcarrier cluster includes more than one subcarrier, the subcarrier cluster index corresponds to one frequency segment.

S102: According to the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster, grouping the subcarrier clusters in the used frequency borrowing to obtain a plurality of subcarrier groups.

Specifically, in the embodiment of the present invention, according to the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster, when subcarrier clusters in the used spectrum are grouped, the subcarrier cluster index is continuous and actual. The subcarrier clusters with the same number of bearers are divided into a group, and the number of subcarrier clusters is a dynamic non-fixed subcarrier group. The subcarrier clusters in each subcarrier group carry the same number of bits and the subcarrier cluster index is continuous, for example. The bit bearer situation in FIG. 4 is in accordance with an embodiment of the present invention. The grouping method provided, the final grouping result is: subcarrier cluster index 1~29 is subcarrier group N, carrying 8 bits; subcarrier cluster index 30~32 is subcarrier group N+l, carrying 7 bits; subcarrier Cluster index 33~36 is subcarrier group N+2, carrying 8 bits; subcarrier cluster index 37~39 is subcarrier group N+/3, carrying 7 bits; subcarrier cluster index 40~41 is subcarrier group N+4 , carrying 8 bits; subcarrier cluster index 42~64 is subcarrier group N+5, carrying Ί bits, as shown in FIG. 5.

S103: The bit information carried by each subcarrier group obtained by the grouping in the S102 is sent to the peer network device, where the bit information carried by each subcarrier group is information indicating the number of subcarrier clusters included in the subcarrier group, and The information of the same number of bits carried by the subcarrier clusters in the group, and the peer network device is a network device that performs bit information interaction with the network device that currently performs bit information processing.

Specifically, in the embodiment of the present invention, when the bit information is exchanged between the network devices, the number of bits carried by each subcarrier group obtained by the packet may be sent to the peer network device, that is, the indicator carried in each subcarrier group is used for indication. The information of the number of subcarrier clusters included in the subcarrier group and the information of the same number of bits carried by the subcarrier clusters in the group are sent to the peer network device, and the bit information carried by each subcarrier cluster does not need to be exchanged, thereby reducing transmission. The amount of data.

According to the bit information processing method provided by the embodiment of the present invention, the subcarrier clusters with consecutive subcarrier cluster indexes and the same actual number of bearer bits are grouped into one group according to the subcarrier cluster index of each subcarrier cluster and the number of bits actually carried. The number of bits carried by each subcarrier cluster in the group is the same but is the number of bits actually carried, which does not waste the subcarrier cluster resources. For each subcarrier group obtained by the packet, the bit information carried by each subcarrier group is exchanged. That is, information for determining the number of subcarrier clusters included in the subcarrier group and information of the same number of bits carried by the subcarrier clusters in the group, to complete the interaction of the bit information in the bit table, and also to reduce the interaction bit table The amount of information transmitted.

Embodiment 2

The second embodiment of the present invention will specifically describe the bit information interaction process involved in the first embodiment in combination with practical applications.

In S101, it is determined that each subcarrier cluster can carry the number of bits, and can be calculated according to an actual network environment. For example, in a point-to-point network transmission, the bit that each subcarrier cluster can bear can be determined according to the signal to noise ratio SR of the received signal. Number, for example, by the receiving network device or the sender network According to the signal-to-noise ratio SR of the received signal, the device determines the number of bits each subcarrier cluster can carry in the spectrum according to Shannon's theorem. In the case of point-to-multipoint network transmission, the network device currently performing bit information processing may determine each subcarrier cluster according to information that the number of bearable bits of each subcarrier cluster in the same spectrum range transmitted by at least two network devices is used. The number of bits that can be carried, wherein the determined number of bits that each subcarrier cluster can carry is the number of bits that at least two network devices can support to send and receive. For example, at least two receiving end devices transmit related information of the number of bearable bits, such as The signal-to-noise ratio S or the bit table, etc., and then the transmitting device calculates the number of bits that at least two receiving devices can carry according to the low principle according to the information about the number of bearable bits transmitted by the at least two receiving devices.

Further, as can be seen from FIG. 1 and FIG. 2, due to multipath effects and the like, the SNR may have jitter around ldB, so that the number of bits carried by the individual subcarrier clusters may be different in the range of the set frequency i included in the used spectrum. The number of bits carried in the majority of the subcarrier clusters is as shown in a and b in FIG. 6, so that the number of bits carried by the individual subcarrier clusters can be preprocessed to be compared with most of the subcarriers in the embodiment of the present invention. The number of bits carried by the cluster is the same, so that the individual subcarrier cluster and most of the subcarrier clusters can be divided into one group, and the subcarrier cluster group is fuzzified, as shown in FIG. 6, the partial subcarrier cluster can be divided. In the N+1 group, the b-part sub-carrier cluster is divided into N+1 groups, thereby reducing the number of sub-carrier cluster packets and further reducing the data transmission amount.

As a preferred embodiment of the first embodiment of the present invention, after determining the number of bits that each subcarrier cluster can carry in the system using the S101, the subcarrier cluster index of each subcarrier cluster is determined and determined in S102. The number of bits carried by each subcarrier cluster is preprocessed in a set frequency range included in the used spectrum before the subcarrier clusters in the spectrum are used, and the subcarrier clusters having different number of bearers are preprocessed. The subcarrier clusters in the frequency range are set to carry the same number of bits, and the subcarrier clusters with the same number of bearers are obtained, for example, the bit bearer situation in FIG. 4, and the subcarrier cluster indexes carrying the 8 bits can be indexed 33~36 and 4041. The individual subcarrier clusters are divided into subcarrier groups N+1 carrying 7 bits, and the following packet cases are obtained: subcarrier cluster indexes 1 to 29 are subcarrier groups N, carrying 8 bits; subcarrier cluster index 30 64 is subcarriers Group N+l, carrying 7 bits, as shown in Figure 7.

Further, there are often unused spectrum segments in an OFDM system, and the present invention is implemented. In an example, the subcarriers in the unused spectrum segment may be divided into subcarrier groups. Of course, the subcarriers in the unused frequency segment may not be divided into subcarrier groups.

In the embodiment of the present invention, after determining that all subcarrier clusters can carry the number of bits and obtain a plurality of subcarrier groups, in the obtained subcarrier groups, if two subcarrier groups containing subcarrier clusters carrying the same number of bits are included If there are several unused and frequency-contiguous subcarriers that are consecutive to the subcarrier cluster index of the subcarrier clusters included in the two subcarrier groups, then the two subcarrier groups and the plurality of unused subcarriers are The frequency-continuous subcarriers are re-divided into one sub-carrier group as the finally obtained sub-carrier group, so as to reduce the number of sub-carrier cluster divisions and reduce the data transmission amount. As shown in FIG. 8A, the sub-carrier cluster indexes 1 to 36 are Subcarrier group N, carrying 8 bits; subcarrier cluster index 37~64 is subcarrier group N+1, carrying 7 bits; wherein subcarrier group N includes subcarrier cluster index 23-33 of unused frequency segment

When an unused frequency band is included in the entire frequency transmission, when subcarriers in the spectrum segment are not divided into subcarrier groups, as shown in FIG. 8B, subcarrier cluster indexes 1 to 22 are subcarrier groups N, and 8 bits are carried; The carrier cluster index 34~36 is a subcarrier group N+1, which carries 8 bits; the subcarrier cluster index 37~64 is a subcarrier group N+2, which carries 7 bits.

In S103, when the bit information carried by each subcarrier group obtained by the packet is sent to the peer network device, the information for indicating the number of subcarrier clusters included in the subcarrier group and the intra-group sub-group are obtained for each sub-carrier group. The bit information of the same number of bits carried by the carrier cluster may preferably be transmitted in the information format of "the number of bits per subcarrier cluster + the number of subcarriers included in the subcarrier group".

The information used to indicate the number of subcarrier clusters included in the subcarrier group in the embodiment of the present invention may be a subcarrier cluster index of the initial subcarrier cluster, a subcarrier cluster index of the terminated subcarrier cluster, or an intra-group subcarrier. Cluster number value;

Specifically, as shown in FIG. 9, the Bi value and the Bi value 2 respectively represent the same number of bits carried by the subcarrier group in the Nth subcarrier group and the N+1th subcarrier group, the number of subcarrier clusters, and the termination. The subcarrier cluster index of the subcarrier cluster and the subcarrier cluster index of the starting subcarrier cluster are respectively used to indicate the number of subcarrier clusters in the corresponding subcarrier group. In the embodiment of the present invention, when determining the number of subcarrier clusters included in the subcarrier group as the subcarrier cluster index of the starting subcarrier cluster, the sending is used to indicate the subcarrier clusters included in the subcarrier group. The information of the number is obtained by sending the subcarrier cluster index of the initial subcarrier cluster included in the subcarrier group to the peer network device, and the peer network device is included in the subcarrier group adjacent to the subcarrier group. The subcarrier cluster index of the initial subcarrier cluster is used to determine the number of subcarrier clusters included in the subcarrier group.

When it is used to determine the number of subcarrier clusters included in the subcarrier group as the subcarrier cluster index of the terminating subcarrier cluster, transmitting information for determining the number of subcarrier clusters included in the subcarrier group, by transmitting the The subcarrier cluster index of the terminating subcarrier cluster included in the subcarrier group is indexed to the peer network device, and the peer network device determines the subcarrier group by using the subcarrier cluster index of the terminating subcarrier cluster included in the adjacent subcarrier group. The number of subcarrier clusters included.

It should be further noted that, when the unused spectrum segment is included in the entire spectrum in the embodiment of the present invention, and the subcarriers in the unused frequency carrier are divided into subcarrier groups, when the bit information in the bit table is exchanged, The unused network information may be negotiated or exchanged in advance by other network messages by the receiving network device and the transmitting network device to more accurately determine the number of subcarrier clusters included in the bit table.

In the bit information interaction mode provided by the embodiment of the present invention, according to the bit bearer condition of the subcarrier cluster, the subcarrier clusters with consecutive subcarrier cluster indexes and the same number of bearer bits are grouped into one group, and the subcarrier clusters in each subcarrier group are divided into a group. The number is not fixed, but each subcarrier cluster carries the same number of bits and is the number of bits actually carried by the subcarrier cluster. According to the obtained grouping result, the bit information in the bit table is exchanged, the data transmission amount can be reduced, and resources can be avoided. waste.

Embodiment 3

Based on the bit information processing method of the foregoing embodiment, the third embodiment of the present invention provides a bit information processing apparatus. As shown in FIG. 10, the bit information processing apparatus includes: a determining unit 10, a grouping unit 11, and a transmitting unit 12, among them:

The determining unit 10 is configured to determine, respectively, the number of bits carried by each subcarrier cluster in the spectrum, where the subcarrier cluster comprises at least one subcarrier, and the determined number of bits carried by each subcarrier cluster is sent to the grouping unit 11;

The grouping unit 11 is configured to receive the number of bits carried by each subcarrier cluster sent by the determining unit 10, And grouping the subcarrier clusters in the used spectrum according to the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster, obtaining a plurality of subcarrier groups, and sending each subcarrier group obtained by the packet Sending to the sending unit 12, where the subcarrier cluster index of each subcarrier cluster in each subcarrier group is consecutive and the number of bits carried is the same;

The sending unit 12 is configured to receive each subcarrier group obtained by the grouping of the grouping unit 11, and send the bit information carried by the packet to the peer network device for each subcarrier group, where the bit information carried by each subcarrier group is used for The information indicating the number of subcarrier clusters included in the current subcarrier group and the information of the same number of bits carried by the subcarrier clusters in the group, and the peer network device is a network device that performs bit information interaction with the network device currently performing bit information processing. .

The grouping unit 11 is further configured to: preprocess the subcarrier clusters with different number of bearer bits in the set frequency transmission range included in the frequency spectrum before the grouping of the subcarrier clusters in the used frequency spectrum, to obtain the bearer bits. The same number of subcarrier clusters.

Specifically, the sending unit 12 is configured to send a subcarrier cluster index of the starting subcarrier cluster included in the current subcarrier group, and pass the subcarrier cluster of the subcarrier group adjacent to the current subcarrier group. a carrier cluster index to determine the number of subcarrier clusters included in the current subcarrier group; or

Transmitting a subcarrier cluster index of the terminating subcarrier cluster included in the current subcarrier group, and determining, by using a subcarrier cluster index of the terminating subcarrier cluster included in the subcarrier group adjacent to the current subcarrier group, The number of subcarrier clusters.

The grouping unit 11 is further configured to: after grouping the subcarrier clusters in the spectrum, in the obtained plurality of subcarrier groups, if two of the subcarrier groups that carry the subcarrier clusters carrying the same number of bits are between If there are thousands of unused and frequency-contiguous subcarriers consecutive to the subcarrier cluster index of the subcarrier clusters included in the two subcarrier groups, then the two subcarrier groups and the plurality of unused and frequency are The consecutive subcarriers are re-divided into one subcarrier group as the finally obtained subcarrier group.

Specifically, the determining unit 10 is configured to determine, according to a signal to noise ratio S R of the received signal, a number of bits that each subcarrier cluster can carry; or

According to the use of at least two network devices, each subcarrier cluster in the same spectrum range can be used. The information of the number of bits is used to determine the number of bits carried by each subcarrier cluster. The determined number of bits that each subcarrier cluster can carry is the number of bits that at least two network devices can support.

According to the bit information processing apparatus provided by the embodiment of the present invention, the subcarrier clusters with consecutive subcarrier cluster indexes and the same actual number of bearers are divided into a group according to the subcarrier cluster index of each subcarrier cluster and the number of bits actually carried. The number of bits carried by each subcarrier cluster in the group is the same but is the number of bits actually carried, which does not waste the subcarrier cluster resources. For each subcarrier group obtained by the packet, the bits carried by each subcarrier group are exchanged. Information, that is, information for determining the number of subcarrier clusters included in the subcarrier group and information of the same number of bits carried by the subcarrier clusters in the group, to complete bit information interaction in the bit table, and to reduce the interaction bit table The amount of information transferred.

The above-mentioned bit information processing apparatus provided by the embodiment of the present invention may be an independent component, or may be integrated in a network device. For example, the bit information processing apparatus provided by the embodiment of the present invention may be the receiving of the OFDM system in the existing communication network. The end network device or the sender network device may also be a new component integrated in the receiving network device or the transmitting network device.

It should be noted that the function implementation and the interaction manner of each module/unit of the bit information processing apparatus in the embodiment of the present invention may be further referred to the description of the related method embodiments.

Embodiment 4

Based on the bit information processing method and the bit information processing apparatus provided by the embodiment of the present invention, the fourth embodiment of the present invention provides a network controller. As shown in FIG. 11, the network controller includes a processor 20 and an I/O interface 21. , among them:

The processor 20 is configured to respectively determine a number of bits carried by each subcarrier cluster in the used spectrum, where the subcarrier cluster includes at least one subcarrier, and is carried according to the subcarrier cluster index of each subcarrier cluster and the determined subcarrier cluster. The number of bits is used to group the subcarrier clusters in the spectrum to obtain thousands of subcarrier groups, and for each subcarrier group, the number of bits carried by the subcarriers is output to the I/O interface 21, where the bit information indicates the current subcarrier. Information of the number of subcarrier clusters included in the carrier group, and information of the same number of bits carried by the subcarrier clusters in the group;

The I/O interface 21 is configured to send the bit information carried by the peer network device to the peer network device for each subcarrier group, where the peer network device is compared with the network device currently performing bit information processing. A network device that interacts with information.

The network controller provided by the embodiment of the present invention divides the subcarrier clusters with consecutive subcarrier cluster indexes and the same actual bearer number into a group according to the subcarrier cluster index of each subcarrier cluster and the number of bits actually carried. The number of bits carried by each subcarrier cluster is the same but is the number of bits actually carried, which does not waste the subcarrier cluster resources. For each subcarrier group obtained by the packet, the bit information carried by each subcarrier group is exchanged. That is, the information for determining the number of subcarrier clusters included in the subcarrier group and the information of the same number of bits carried by the subcarrier clusters in the group are used to complete the interaction of the bit information in the bit table, and the interaction of the bit table can also be reduced. The amount of information transmitted.

Embodiment 5

Based on the bit information processing method and apparatus according to the foregoing embodiment, the fifth embodiment of the present invention provides a bit information processing system. As shown in FIG. 12, the bit information processing system includes a first network device 30 and a second network device 31. , among them,

The first network device 30 is the bit information processing device involved in the third embodiment of the present invention. The first network device 30 has the same structure and function as the bit information processing device in the third embodiment. The specific structure and function are not described herein again.

The first network device 30 sends the bit information carried by the first network device to the second network device, where the bit information is information and a group for indicating the number of subcarrier clusters included in the current subcarrier group. Information of the same number of bits carried by the inner subcarrier cluster.

The second network device 31 receives the bit information that is sent by the first network device 30 for each subcarrier group, and determines the number of subcarrier clusters included in each subcarrier group and the subcarrier clusters in the group according to the received bit information. The same number of bits carried.

According to the bit information processing system provided by the embodiment of the present invention, the first network device divides the subcarrier clusters with consecutive subcarrier cluster indexes and the same actual number of bearers according to the subcarrier cluster index of each subcarrier cluster and the number of bits actually carried. For a group, the number of bits carried by each subcarrier cluster in the group is the same, but it is the number of bits actually carried, which does not waste the subcarrier cluster resources. For each subcarrier group obtained by the packet, each subcarrier group is exchanged. The bit information of the bearer, that is, information for determining the number of subcarrier clusters included in the subcarrier group and the same number of bits carried by the subcarrier clusters in the group The information is used to complete the interaction of the bit information in the bit table, and the amount of information transmission when the bit table is interactive can also be reduced.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Rights request

1. A bit information processing method, characterized by including:

Respectively determine the number of bits carried by each subcarrier cluster in the spectrum, where the subcarrier cluster includes at least one subcarrier;

According to the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster, the subcarrier clusters within the used spectrum are grouped to obtain several subcarrier groups, in which the number of subcarrier clusters in each subcarrier group is The subcarrier cluster indexes are consecutive and carry the same number of bits;

For each subcarrier group, the bit information carried by it is sent to the peer network device, where the bit information carried by each subcarrier group is information used to indicate the number of subcarrier clusters included in the current subcarrier group and the subcarrier clusters within the group. The carrier cluster carries the same number of bits of information, and the peer network device is a network device that interacts with the network device currently processing bit information.

2. The method according to claim 1, characterized in that, before grouping the subcarrier clusters within the used spectrum, it further includes:

Perform preprocessing on subcarrier clusters with different numbers of bits carried within the set spectrum range included in the used spectrum to obtain subcarrier clusters with the same number of bits carried.

3. The method according to claim 1 or 2, characterized in that, after grouping the subcarrier clusters within the used spectrum, it further includes:

Among the several subcarrier groups obtained, if between two subcarrier group groups that contain subcarrier clusters carrying the same number of bits, there is a subcarrier cluster index that is continuous with the subcarrier clusters included in the two subcarrier groups. If there are thousands of unused subcarriers with continuous frequencies, then the two subcarrier groups and the several unused subcarriers with continuous frequencies are re-divided into one subcarrier group as the final subcarrier group.

4. The method according to claim 1, characterized in that separately determining the number of bits carried by each subcarrier cluster specifically includes:

Determine the number of bits that each subcarrier cluster can carry based on the signal-to-noise ratio SR of the received signal; or based on the number of bits that each subcarrier cluster can carry within the same spectrum range sent by at least two network devices. The information about the number of bits carried is to determine the number of bits carried by each subcarrier cluster, where the determined number of bits that each subcarrier cluster can carry is the number of bits that both the at least two network devices can support sending and receiving.

5. A bit information processing device, characterized in that it includes: a determining unit, a grouping unit and a sending unit, wherein:

Determining unit, configured to determine the number of bits carried by each subcarrier cluster within the frequency band, wherein the subcarrier cluster contains at least one subcarrier, and send the determined number of bits carried by each subcarrier cluster to the group unit;

A grouping unit, configured to receive the number of bits carried by each subcarrier cluster sent by the determining unit, and determine the number of bits carried by each subcarrier cluster based on the subcarrier cluster index of each subcarrier cluster and the determined number of bits carried by each subcarrier cluster. The subcarrier clusters are grouped to obtain several subcarrier groups, and each grouped subcarrier group is sent to the sending unit, where the subcarrier cluster index of each subcarrier cluster in each subcarrier group is continuous and carries the same number of bits ;

A sending unit, configured to receive each subcarrier group grouped by the grouping unit, and for each subcarrier group, send the bit information carried by it to the opposite end network device, where the bit information carried by each subcarrier group indicates the current Information about the number of subcarrier clusters included in the subcarrier group, and information about the same number of bits carried by the subcarrier clusters in the group, and the peer network device is a network device that interacts with bit information with the network device currently processing bit information. .

6. The bit information processing device according to claim 5, characterized in that the grouping unit is also used for:

Before grouping the subcarrier clusters in the used spectrum, subcarrier clusters with different numbers of bits carried within the set spectrum range included in the used spectrum are preprocessed to obtain subcarrier clusters with the same number of bits carried.

7. The bit information processing device according to claim 5 or 6, characterized in that the grouping unit is also used for:

After grouping the subcarrier clusters within the used spectrum, in the obtained thousands of subcarrier groups, if there are two subcarrier group groups containing subcarrier clusters carrying the same number of bits, and in the two subcarrier groups The subcarrier clusters contained have several consecutive subcarrier cluster indexes that are unused and have consecutive frequencies. continuous subcarriers, then the two subcarrier groups and the several unused subcarriers with continuous frequencies are re-divided into one subcarrier group as the final subcarrier group.

8. The bit information processing device according to claim 5, characterized in that the determining unit is used to:

Determine the number of bits that each subcarrier cluster can carry according to the signal-to-noise ratio S R of the received signal; or determine the number of bits that each subcarrier cluster can carry based on the information sent by at least two network devices using the same spectrum range. The number of bits carried by the cluster, where the determined number of bits that each subcarrier cluster can carry is the number of bits that both the at least two network devices can support sending and receiving.

9. A bit information processing system, characterized by including a first network device and a second network device, wherein,

The first network device is the bit information processing device according to any one of claims 5 to 8; the first network device, for each subcarrier group, sends the bit information carried by it to the second network device , wherein the bit information is information used to indicate the number of subcarrier clusters included in the current subcarrier group and information about the same number of bits carried by the subcarrier clusters in the group.

The second network device receives the bit information carried by each subcarrier group sent by the first network device, and determines the number of subcarrier clusters contained in each subcarrier group and the number of subcarrier clusters in the group based on the received bit information. The same number of bits carried by a carrier cluster.