WO2013107113A1

WO2013107113A1 - Method and device for distributing resource block groups in long term evolution system

Info

Publication number: WO2013107113A1
Application number: PCT/CN2012/073946
Authority: WO
Inventors: 黄志强; 谢忠时
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-01-18
Filing date: 2012-04-12
Publication date: 2013-07-25
Also published as: CN102448175B; JP2014530527A; JP5764263B2; CN102448175A

Abstract

Disclosed is a method for distributing resource block groups (RBG) in a long term evolution (LTE) system. The method comprises the steps of: according to the received CQI information and own-recorded RBG use conditions, distributing RBGs in a time slot 1 and/or time slot 2 for a terminal sending channel quality indicator (CQI) information, and writing the RBG distribution result into downlink control information (DCI) with a new DCI form. A device for distributing RBGs in the LTE system is also disclosed. With the present invention, RBGs are respectively distributed for two time slots of a general sub-frame according to the signal conditions of the two time slots in the general sub-frame. Thereby, the anti-fading property of the LTE system is improved, and furthermore, the performance of the whole system is enhanced.

Description

Method and device for allocating resource block groups in long-term evolution system

The present invention relates to a resource allocation technology in a wireless communication or long term evolution (LTE) system, and more particularly to a method and apparatus for allocating a resource block group (RBG) in an LTE system. Background technique

The LTE project in the 3GPP (The 3rd Generation Partnership Project) in the field of wireless communication is the evolution of 3G, improving and enhancing the 3G air access technology, using orthogonal frequency division multiplexing (OFDM, Orthogonal Frequency). Division Multiplexing) / Frequency Division Multiple Access (FDMA) is the core technology.

In the LTE technology, the scheduling unit is one subframe, that is, 1 ms. The subframe has two structures: a normal subframe and a special subframe, where the normal subframe includes two slots, each slot is 0.5 ms, according to each slot and Time slot two; the special subframe includes three special time slots. When performing uplink/downlink traffic transmission in each normal subframe, the RBG is allocated as a basic physical resource unit; wherein, the RBG is composed of multiple physical resource blocks (PRBs), and the width of one PRB is in the frequency domain. It is 180kHz.

The method for the LTE system to allocate the RBG to any one of the terminals managed by the eNodeB is: the eNodeB sends a channel quality indicator (CQI) information to the terminal, according to the resource allocation algorithm specified by the protocol. The RBG allocation of slot 1 and slot 2 is performed in pairs; the eNodeB passes the RBG allocation result through downlink control information (DCI, The Downlink Control Information informs the terminal that the terminal performs uplink and downlink service data reception and transmission according to the DCI at the specified RBG location. The eNodeB notifies the terminal of the RBG allocation result by using the DCI to: the eNodeB selects the corresponding DCI format according to the transmission mode of the terminal, and writes the RBG allocation result of the terminal in the resource block assignment (RBA, Resource Block Assignment) in the DCI. In the field, the DCI is sent to the terminal through a Physical Downlink Control Channel (PDCCH). The corresponding DCI format is selected according to the transmission mode of the terminal, and the eNodeB associates the transmission mode with the DCI format according to the protocol. For example, the DCI format corresponding to the transmission mode 2 is DCI la.

However, in the foregoing method for allocating RBGs, the RBG allocation of slot 1 and slot 2 is performed in pairs, so the eNodeB cannot separately flexibly according to the signal quality conditions of the two slots in each normal subframe in the CQI information. The time slots are allocated RBGs. Thus, when the signal quality is good when the specified RBG is used in one time slot and the signal quality is poor when the specified RGB resources are used in another time slot, the signal fading occurs. It will affect the quality of the received signal in the time slot with poor signal quality, which will affect the system performance.

It can be seen that in the existing LTE system, the eNodeB allocates an RBG to any one of the terminals managed by the eNodeB, and the RBG can be flexibly allocated for the two time slots according to different signal quality conditions of the two time slots in the normal subframe, resulting in LTE. The system does not improve the anti-fading properties, which in turn affects the performance of the entire system. Summary of the invention

In view of the above, an object of the present invention is to provide a method and an apparatus for allocating RBGs in an LTE system, which respectively allocate RBGs for two time slots of a normal subframe according to signal conditions of two time slots in a normal subframe. The fading resistance of the LTE system improves the performance of the entire system.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a method for allocating an RBG in an LTE system, the method comprising: sending a CQI according to the received CQI information and the RBG usage recorded by itself The terminal of the information allocates the RBG in slot 1 and/or slot 2, and the RBG allocation result is written in the DCI using the new DCI format.

In the foregoing solution, before the RBG usage according to the received CQI information and the self-recording, the method further includes: setting a new DCI format, specifically: adding a time slot indication (TSI, before the RBA field in the DCI format) Time Slot Indicator field, other fields in the DCI format are set according to the existing protocol;

The TSI field is used to indicate a time slot corresponding to the allocated RBG.

In the above solution, the assigning the RBG in the slot 1 and/or the slot 2 to the terminal that sends the CQI information according to the received CQI information and the RBG usage status recorded by itself includes: sending according to the CQI information. If the terminal signal quality of the CQI information is good, check whether the corresponding RBG in slot one is idle. If it is idle, determine whether the number of idle RBGs with good signal quality in slot one meets the CQI information. The terminal needs to allocate the RBG of the slot 1 to the terminal if it is satisfied;

If the number of RBGs corresponding to the frequency band in which the signal quality of the terminal is good is not idle, or the number of RBGs corresponding to the frequency of the signal quality in the first time slot does not satisfy the requirement of the terminal, the transmission is recorded according to the CQI information. If the terminal signal quality of the CQI information is good, check whether the corresponding RBG in slot 2 is idle. If it is idle, determine whether the number of idle RBGs with good signal quality in slot 2 meets the CQI information. The demand of the terminal, if satisfied, allocates the RBG of the second slot to the terminal;

If the number of RBGs corresponding to the frequency band in which the terminal signal quality is good in slot 2 is not idle, or the number of RBGs corresponding to the frequency band in the second slot does not satisfy the requirement of the terminal, the time slot 1 and RBG of time slot two.

In the above solution, the using the DCI format to write the RBG allocation result in the DCI includes: writing the RBG allocation result in the RBA field of the new DCI format, and filling in the allocated time slot of the RBG in the TSI field. In the foregoing solution, the RBG allocation result is written in the RBA field of the new DCI format, and the allocated time slot of the RBG is filled in the TSI field, including:

When the allocated time slot is time slot 1, the TSI field is set to 0x01, and the RBG allocation result is written in the RBA field; when the allocated time slot is time slot 2, the TSI field is set to 0x02, and the RBG is written in the RBA field. Assignment result; When slot 1 and slot 2 are allocated in pairs, the TSI field is set to 0x00, and the allocation result of the RBG of slot 1 and slot 2 is written in the RBA field.

In the foregoing solution, after the RBG allocation result is written in the DCI by using the new DCI format, the method further includes: the eNodeB sends the DCI to the terminal that sends the CQI information by using the physical downlink control channel PDCCH, where the terminal is preset according to the preset The program demodulating the new DCI format demodulates the DCI.

The present invention also provides an apparatus for allocating an RBG in an LTE system, where the apparatus includes: an eNodeB transceiver module and an eNodeB resource allocation module;

The eNodeB transceiver module is configured to send the received CQI information to the eNodeB resource allocation module.

The eNodeB resource allocation module is configured to allocate, according to the CQI information sent by the eNodeB transceiver module and the RBG usage recorded by the eNodeB, the RBG in the slot 1 and/or the slot 2 for the terminal that sends the CQI information, and use the new DCI format. The RBG allocation results are written in the DCI.

In the foregoing solution, the eNodeB resource allocation module is specifically configured to save the set new DCI format, specifically: adding a TSI field before the RBA field in the DCI format, and setting other fields in the DCI format according to an existing protocol; The TSI field is used to indicate a time slot corresponding to the allocated RBG.

In the above solution, the eNodeB resource allocation module is specifically configured to check whether the corresponding RBG in the slot 1 is idle according to the frequency band of the terminal signal quality of the CQI information recorded in the CQI information, and if it is idle, the judgment is performed. Idle RBG with good signal quality The number of the terminals that meet the requirements of the terminal that sent the CQI information, and if so, the RBG of the slot one is allocated to the terminal;

In the above solution, the eNodeB resource allocation module is specifically configured to write the RBG allocation result in the RBA field of the new DCI format, and fill in the allocation slot of the RBG in the TSI field.

In the above solution, the eNodeB resource allocation module is specifically configured to: when the allocated time slot is time slot 1, the TSI field is set to 0x01, and the RBG allocation result is written in the RBA field; when the allocated time slot is time slot 2 The TSI field is set to 0x02, and the allocation result of the RBG is written in the RBA field. When the time slot 1 and the time slot 2 are allocated in pairs, the TSI field is set to 0x00, and the time zone 1 and the time slot 2 pair are written in the RBA field. The result of the allocation of RBG.

In the above solution, the device further includes: a terminal DCI demodulation module, configured to receive the DCI sent by the eNodeB transceiver module, and demodulate the DCI according to a preset demodulation new DCI format procedure; correspondingly, the eNodeB transceiver module And receiving the DCI sent by the eNodeB resource allocation module, and sending the DCI to the terminal DCI demodulation module by using the PDCCH;

The eNodeB resource allocation module is further configured to send the DCI including the RBG allocation result to the eNodeB transceiver module. In the above solution, the eNodeB transceiver module and the eNodeB resource allocation module are located at the eNodeB; and the terminal DCI demodulation module is located at the terminal.

The method and device for allocating RBGs in the LTE system provided by the present invention determine the signal status of two time slots in a normal subframe of a terminal that sends CQI information according to the received CQI information and the RBG usage status recorded by itself. For the terminal that sends the CQI information, the RBG in slot 1 or slot 2, or the RBG in slot pair 1 and slot 2 are respectively allocated. In addition, the present invention improves the DCI format to obtain a new DCI format. The DCI can transmit the RBG allocation result in the first slot and/or the second slot. Thus, by using the present invention, the anti-fading performance of the LTE system can be improved by separately assigning the RBGs in different time slots, thereby improving the performance of the entire system. . DRAWINGS

1 is a flowchart of a method for allocating an RBG in an LTE system according to the present invention;

2 is a schematic flowchart of Embodiment 1 of a method for allocating RBGs in an LTE system according to the present invention; FIG. 3 is a schematic flowchart of Embodiment 2 of a method for allocating RBGs in an LTE system according to the present invention; schematic diagram. detailed description

The basic idea of the present invention is: assigning RBGs in slot 1 and/or slot 2 to terminals that send CQI information according to received CQI information and RBG usage records recorded by itself, and assigning RBG results using a new DCI format. Written in DCI.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

A method for allocating RBGs in an LTE system is as shown in FIG. 1 and includes the following steps: Step 101: Set a new DCI format.

Here, the new DCI format is: before the RBA field in the DCI format is specified in the protocol, the TSI field is added, and other fields in the DCI format are set according to an existing protocol; wherein the TSI field indicates that the terminal is allocated an RBG. Time slot, length is two bytes, defined 0x00 means slot 1 and slot 2 are allocated, 0x01 means allocation only in slot 1, 0x02 means allocation only in slot 2.

Step 102: Allocate the RBG in the slot 1 and/or slot 2 for the terminal that sends the CQI information according to the received CQI information and the RBG usage recorded by itself.

Here, the CQI information is information about the signal quality of the downlink channel of the base station where the terminal is listening, and the generation manner and the transmission format are all prior art, and are not mentioned here; the CQI information may be the terminal according to a preset period. The CQI information is sent to the eNodeB periodically. After receiving the CQI information sent by the eNodeB, the terminal may send the CQI information to the eNodeB.

Step 103: Write the RBG allocation result in the DCI using the new DCI format.

Here, the preparation is: writing the RBG allocation result in the RBA field of the new DCI format, and filling in the allocated time slot of the RBG in the TSI field, specifically: when the allocated time slot is the time slot one, the TSI field is set. 0x01, the allocation result of the RBG is written in the RBA field; when the allocated time slot is slot 2, the TSI field is set to 0x02, and the allocation result of the RBG is written in the RBA field; when the time slot 1 and the time slot 2 are paired The TSI field is set to 0x00, and the allocation result of the RBG is set as the slot 1 and the slot 2 in the RBA field. The allocation result of the RBG in the RBA field is prepared according to the prior art. The assigned RBG is marked as occupying and marking the identity of the terminal to which it is assigned in the resource bitmap specified in the prior art.

In the foregoing step 102, the assigning the RBG in the slot 1 and/or the slot 2 to the terminal that sends the CQI information according to the received CQI information and the RBG usage status recorded by itself includes the following steps:

Step a: According to the frequency band of the terminal signal quality of the CQI information sent in the CQI information, check whether the corresponding RBG in the slot 1 is idle. If it is idle, perform step b; otherwise, execute step c. Here, the signal quality of the terminal may be: according to the preset signal quality threshold, when the signal strength of any one of the frequency bands uploaded in the CQI information is higher than the signal quality threshold, that is, the frequency band with good signal quality; The signal quality threshold is preset according to actual conditions.

Whether the RBG resource is idle is determined according to whether the RBG resource recorded by the eNodeB has an occupied tag.

Step b: determining whether the number of idle RBGs with good signal quality in slot 1 meets the requirements of the terminal that sent the CQI information, and if so, assigning the RBG of slot 1 to the terminal, performing step 103; If yes, go to step c.

Here, the requirement of the terminal that sends the CQI information is: The eNodeB checks the number of RBGs that the terminal needs to record by the terminal according to the terminal identifier in the CQI information, and determines the signal in the slot 1 managed by the current eNodeB. Whether the number of RBGs corresponding to the good quality band satisfies the requirements of the terminal; wherein the number of RBGs used by the recorded terminal is the information of the terminal that the eNodeB needs to record, which is specified in the prior art, Make a statement.

Step c: According to the frequency band of the terminal signal quality of the CQI information sent in the CQI information, check whether the corresponding RBG in the slot 2 is idle. If it is idle, perform step d; otherwise, execute step e.

Step d: determining whether the number of idle RBGs with good signal quality in slot 2 meets the requirements of the terminal that sent the CQI information, and if yes, assign the RBG of slot 2 to the terminal, and perform step 103; If yes, go to step e.

Step e: To allocate the RBGs of the slot 1 and the slot 2 in pairs, perform step 103.

Here, the RBGs that allocate the time slot 1 and the time slot 2 in pairs are allocated according to the existing protocol, and are not described herein.

In addition, before the foregoing step 101, the terminal managed by the eNodeB needs to be improved, so that the terminal can demodulate the new DCI format provided by the present invention, and the method for improving the terminal may be: The method of pre-demodulating the demodulation program of the new DCI format, writing and presetting the program for demodulating the new DCI format are all prior art, and will not be described here; and, the eNodeB also needs to be improved according to the terminal managed by itself. In order to be able to demodulate the new DCI format provided by the present invention, determine the manner in which the new DCI format is set. If most of the terminals currently managed by the eNodeB can be modified to demodulate the terminal of the new DCI format, the new DCI format is set in the first mode. Otherwise, the new DCI format is set in the second mode; wherein the majority may be higher than the preset ratio, for example: may be higher than 98%, that is, more than 98% of the terminals managed by the eNodeB can be improved. To demodulate the terminal of the new DCI format;

The first DCI format is set to: the existing DCI format specified in the protocol is all modified to a corresponding new DCI format, and the new DCI format is still associated with the transmission mode corresponding to the original DCI format; Setting the transmission mode corresponding to the new DCI format is set according to the prior art. For example, in the prior art, the transmission mode corresponding to the DCI la format is the transmission mode 2. In this embodiment, the transmission mode corresponding to the new DCI la format is still set to Transmission mode 2, the method of setting the transmission mode corresponding to other new DCI formats, and so on, will not be described here; the second method is to set a new DCI format to: define a new DCI format, and enable demodulation of the new DCI format. The new DCI format is used between the terminal and the eNodeB, and the transmission mode of the terminal is defined as a new transmission mode, and the eNodeB associates the new DCI format with the new transmission mode. The definition of a new DCI format may be: modifying the existing DCI la format, adding a TSI field in front of the RSA field of the DCI la format, and defining the modified DCI la format as a DCI 7 format; The method of defining a new transmission mode is prior art, for example, a new transmission mode can be defined as the transmission mode 12.

Further, when the new DCI format is set in the first mode in step 101, before the foregoing step 102, the eNodeB needs to obtain the transmission mode of the terminal that can manage the new DCI format according to the prior art, and determine that the eNodeB can demodulate. The new DCI format corresponding to the terminal of the new DCI format, when performing step 103, the RBG allocation is performed by using the determined new DCI format. The result is written and sent to the corresponding terminal in the DCI;

When the new DCI format is set in the second mode in step 101, the eNodeB obtains the transmission mode of all the terminals managed by the eNodeB according to the prior art, and determines whether the terminal of the sent CQI information is capable of demodulating the new DCI format. If yes, perform step 102; if not, perform subsequent operations of assigning RBGs according to the prior art, and no further details are provided herein.

After the foregoing step 103 is completed, the eNodeB sends the DCI to the terminal by using the PDCCH, and the terminal demodulates the DCI according to the preset demodulation new DCI format program, and then performs subsequent operations according to the prior art according to the RBG allocation result in the DCI.

In the first embodiment, it is assumed that the terminal managed by the eNodeB is completely improved to be able to demodulate the terminal of the new DCI format, and the eNodeB adopts the mode 1 to set the new DCI format, the terminal that sends the CQI information is the terminal one, and the transmission mode of the terminal one is 2, The method for allocating RBGs in the LTE system of the present invention is as shown in FIG. 2, and includes the following steps:

Step 201: The eNodeB adopts the mode 1 to set a new DCI format.

Step 202: The eNodeB determines, according to the transmission mode of the terminal 1 managed by the eNodeB, that the new DCI format corresponding to the terminal is a new DCI la format.

Here, the transmission mode of the terminal is a parameter of the terminal that is managed by the eNodeB, and the method for the eNodeB to acquire the transmission mode of the terminal is a prior art, and details are not described herein.

Step 203: The eNodeB receives the CQI information sent by the terminal managed by itself.

Step 204: The eNodeB allocates the RBG in the slot 1 and/or the slot 2 to the terminal 1 according to the received CQI information and the RBG usage recorded by the eNodeB.

Step 205: The eNodeB writes the RBG allocation result in the DCI to the terminal 1 by using the new DCI la format.

In the second embodiment, it is assumed that most of the terminals currently managed by the eNodeB cannot be modified to demodulate the terminal in the new DCI format, and the eNodeB adopts the second mode to set the new DCI format to DCI 7, DCI 7 The corresponding transmission mode is 12, the terminal that sends the CQI information is the terminal 2 capable of demodulating the DCI 7 format, and the transmission mode of the terminal 2 is 12. The method for allocating the RBG in the LTE system of the present invention is as shown in FIG. 3, including The following steps:

Step 301: The eNodeB adopts the second mode to set the new DCI format to the DCI 7 format, and defines the corresponding transmission mode as the transmission mode 12.

Step 302: The eNodeB determines, according to the transmission mode of the terminal 2 managed by the eNodeB, that the new DCI format corresponding to the terminal two is in the DCI 7 format.

Step 303: The eNodeB determines whether the received CQI information is from the terminal 2, and if yes, performs step 304; otherwise, performs subsequent processing using the prior art, and repeats step 303.

Step 304: The eNodeB allocates the RBG in the slot 1 and/or the slot 2 to the terminal 2 according to the received CQI information and the RBG usage recorded by the eNodeB.

Step 305: The eNodeB writes the RBG allocation result in the DCI and sends it to the terminal 2 in the DCI 7 format.

As shown in FIG. 4, the apparatus for allocating an RBG in an LTE system provided by the present invention includes: an eNodeB resource allocation module 41 and an eNodeB transceiver module 42;

The eNodeB transceiver module 42 is configured to send the received CQI information to the eNodeB resource allocation module 41;

The eNodeB resource allocation module 41 is configured to allocate, according to the CQI information sent by the eNodeB transceiver module 42 and the RBG usage recorded by the eNodeB, the RBG in the slot 1 and/or the slot 2 for the terminal that sends the CQI information, and use the new DCI. The format writes the RBG assignment results in the DCI.

The eNodeB resource allocation module 41 is further configured to save a new DCI format.

The eNodeB resource allocation module 41 is specifically configured to write an RBG allocation result in an RBA field of a new DCI format, and fill in an allocated time slot of the RBG in the TSI field, The TSI field is set to 0x01 when the allocated time slot is slot 1, and the RBG allocation result is written in the RBA field; when the allocated time slot is slot 2, the TSI field is set to 0x02, in the RBA field. The allocation result of the RBG is written. When the slot 1 and the slot 2 are allocated in pairs, the TSI field is set to 0x00, and the allocation result of the RBG of the slot 1 and the slot 2 is written in the RBA field.

The eNodeB resource allocation module 41 is configured to check whether the corresponding RBG in the slot 1 is idle according to the frequency band of the terminal signal quality of the CQI information recorded in the CQI information, and if the RBG is idle, determine the slot 1 Whether the number of idle RBGs with good signal quality satisfies the requirements of the terminal that sends the CQI information, and if so, allocates the RBG of the slot 1 to the terminal;

The eNodeB resource allocation module 41 is further configured to determine, according to the situation that the terminal managed by the self is improved to be able to demodulate the new DCI format provided by the present invention, the manner in which the new DCI format is set, if most of the terminals currently managed by the eNodeB can If the terminal is modified to demodulate the new DCI format, the new DCI format is set in the first mode; otherwise, the new DCI format is set in the second mode; wherein, most of the values may be higher than the preset ratio, for example: More than 98% of terminals in 98% of eNodeB managed terminals can be improved to demodulate new DCI Formatted terminal.

The first DCI format is set to: the existing DCI format specified in the protocol is all modified to a corresponding new DCI format, and the new DCI format is still associated with the transmission mode corresponding to the original DCI format; Setting the transmission mode corresponding to the new DCI format is set according to the prior art. For example, in the prior art, the transmission mode corresponding to the DCI la format is the transmission mode 2. In this embodiment, the transmission mode corresponding to the new DCI la format is still set to Transmission mode 2, the method of setting the transmission mode corresponding to other new DCI formats, and so on, will not be described here;

The second DCI format is set to: add a new DCI format, enable a new DCI format between the terminal that demodulates the new DCI format and the eNodeB, and define a transmission mode of the terminal as a new transmission mode. The eNodeB associates the new DCI format with the new transmission mode. The definition of a new DCI format may be: modifying the existing DCI la format, adding a TSI field in front of the RSA field of the DCI la format, and defining the modified DCI la format as a DCI 7 format; The method of defining a new transmission mode is prior art, for example, a new transmission mode can be defined as the transmission mode 12.

The eNodeB resource allocation module 41 is further configured to: when adopting the mode 1 to set a new DCI format, acquire a transmission mode of a terminal that can manage the new DCI format by itself, and determine a new corresponding to the terminal capable of demodulating the new DCI format. DCI format.

The eNodeB resource allocation module 41 is further configured to: when the new DCI format is set by using the second mode, the eNodeB obtains the transmission mode of all the terminals managed by the eNodeB according to the prior art, and determines whether the terminal of the sent CQI information is demodulable. The terminal in the DCI format, if yes, allocates the RBG in the slot 1 and/or slot 2 for the terminal that sends the CQI information according to the received CQI information and the RBG usage recorded by itself; if not, according to There are techniques for performing subsequent operations of assigning RBGs, and no further description is made here.

The device further includes: a terminal DCI demodulation module 43 for saving preset demodulation new The DCI format demodulation program, the method of writing and presetting the program for demodulating the new DCI format are all prior art, and will not be described here.

The eNodeB resource allocation module 41 is further configured to send the DCI to the eNodeB transceiver module 42. Correspondingly, the eNodeB transceiver module 42 is further configured to receive the DCI sent by the eNodeB resource allocation module 41, and send the DCI to the PDCCH by using the PDCCH. The terminal DCI demodulation module 43 is further configured to receive the DCI sent by the eNodeB transceiver module 42, demodulate the DCI according to a preset demodulation new DCI format program, and then according to the RBG in the DCI. The distribution result is followed by the prior art.

The eNodeB transceiver module 42 and the eNodeB resource allocation module 41 are located at the eNodeB; the terminal DCI demodulation module 43 is located at the terminal.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for allocating a resource block group RBG in a long term evolution LTE system, characterized in that: the method comprises:

According to the received channel quality indication CQI information and the RBG usage status recorded by itself, the terminal that sends the CQI information is allocated the RBG in the slot 1 and/or the slot 2, and the RBG allocation result is written by using the new downlink control information DCI format. In the DCI.

The method according to claim 1, wherein before the RBG usage according to the received CQI information and the self-recording, the method further comprises: setting a new DCI format, specifically: in the DCI format Before the resource block allocates the RBA field, the time slot indication TSI field is added, and other fields in the DCI format are set according to the provisions of the existing protocol;

The method according to claim 1, wherein the terminal allocates time slot 1 and/or time slot 2 for the terminal that sends the CQI information according to the received CQI information and the RBG usage status recorded by itself. RBG, including:

According to the frequency band of the terminal signal quality of the CQI information sent in the CQI information, check whether the corresponding RBG in the slot 1 is idle, and if idle, determine the number of idle RBGs with good signal quality in the slot one, Satisfying the requirement of the terminal that sent the CQI information, if yes, assigning the terminal the RBG of the slot one;

If the RBG corresponding to the frequency band with good terminal signal quality in slot 2 is not idle, or If the number of RBGs corresponding to the frequency band with good signal quality in slot 2 does not satisfy the requirements of the terminal, the RBGs of slot 1 and slot 2 are allocated in pairs.

The method according to claim 1, wherein the using the DCI format to write the RBG allocation result in the DCI comprises: writing the RBG allocation result in an RBA field of a new DCI format, and in the TSI field Fill in the allocated time slots of the RBG.

The method according to claim 4, wherein the RBG allocation result is written in an RBA field of a new DCI format, and the RBG allocation time slot is filled in the TSI field, including:

The method according to claim 1 or 4, wherein after the RBG allocation result is written in the DCI using the new DCI format, the method further includes: the eNodeB sends the DCI to the sending by using the physical downlink control channel PDCCH. The terminal that comes to the CQI information, the terminal demodulates the DCI according to a preset program for demodulating the new DCI format.

An apparatus for allocating an RBG in an LTE system, the apparatus comprising: an eNodeB transceiver module and an eNodeB resource allocation module;

8. Apparatus according to claim 7 wherein: The eNodeB resource allocation module is specifically configured to save the set new DCI format, specifically: adding a TSI field before the RBA field in the DCI format, and setting other fields in the DCI format according to an existing protocol; The TSI field is used to indicate the assigned slot of the RBG^.

9. Apparatus according to claim 7 wherein:

The eNodeB resource allocation module is configured to: according to the frequency band of the terminal signal quality of the CQI information sent in the CQI information, check whether the corresponding RBG in the slot 1 is idle, and if idle, determine the signal in the slot one. Whether the number of idle RBGs of good quality meets the requirements of the terminal that sent the CQI information, and if so, allocates the RBG of the slot 1 to the terminal;

10. Apparatus according to claim 7 wherein:

The eNodeB resource allocation module is specifically configured to write an RBG allocation result in an RBA field of a new DCI format, and fill in an allocated slot of the RBG in the TSI field.

11. Apparatus according to claim 10 wherein:

The eNodeB resource allocation module is specifically configured to: when the allocated time slot is time slot 1, the TSI field is set to 0x01, and the RBG allocation result is written in the RBA field; When the time slot is slot 2, the TSI field is set to 0x02, and the allocation result of the RBG is written in the RBA field. When the time slot 1 and the time slot 2 are allocated in pairs, the TSI field is set to 0x00, and is written as a time slot in the RBA field. The result of the allocation of RBGs paired with time slots.

The device according to claim 11, wherein the device further comprises: a terminal DCI demodulation module, configured to receive the DCI sent by the eNodeB transceiver module, and demodulate according to a preset demodulation new DCI format program. DCI;

Correspondingly, the eNodeB transceiver module is further configured to receive a DCI sent by the eNodeB resource allocation module, and send the DCI to the terminal DCI demodulation module by using the PDCCH;

The eNodeB resource allocation module is further configured to send the DCI that includes the RBG allocation result to the eNodeB transceiver module.

13. Apparatus according to claim 12 wherein:

The eNodeB transceiver module and the eNodeB resource allocation module are located at the eNodeB; the terminal DCI demodulation module is located at the terminal.