WO2011038672A1

WO2011038672A1 - Method and device for scheduling terminal to feed back channel information

Info

Publication number: WO2011038672A1
Application number: PCT/CN2010/077396
Authority: WO
Inventors: 潘学明; 沈祖康; 林亚男; 肖国军
Original assignee: 大唐移动通信设备有限公司
Priority date: 2009-09-29
Filing date: 2010-09-28
Publication date: 2011-04-07
Also published as: CN102014509B; CN102014509A

Abstract

A method and device for scheduling a terminal to feed back channel information enable feedback of information of non-periodic control channels when multiple users transmit Channel Quality Indicator (CQI) information. Said method is as follows: a base station sends to a terminal the set channel information feedback contents and feedback information format information; the base station sends to the terminal a scheduling instruction used for scheduling the terminal to feed back channel information, and when passing the scheduling instruction or before sending the scheduling instruction, the base station also sends to the terminal the uplink resource information, uplink demodulation pilot sequence cycle shift information and orthogonal sequence spread spectrum information which are used for instructing the terminal to feed back the channel information.

Description

Method and device for scheduling terminal feedback channel information. The present application claims to be submitted to the Chinese Patent Office on September 29, 2009, the application number is 200910235254.0, and the invention is entitled "a method and device for scheduling channel feedback channel information". Priority of the application, the entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for scheduling terminal feedback channel information. Background technique

In the 3rd Generation Partnership Project (3GPP) R8 version (Release-8) Long-Term Evolution (LTE), the terminal (UE) needs to feed back channel quality information through the uplink channel ( Channel Quality Indicator, CQI). The base station (eNB) can perform downlink dynamic scheduling by using the CQI fed back by the UE. The CQI can be transmitted on the Physical Uplink Control Channel (PUCCH) and can be transmitted on the Physical Uplink Shared Channel (PUSCH). In 3GPP LTE, a resource resource block (PRB) consists of 12 resource elements (REs). Each RE is 15KHz.

Figure 1 illustrates the manner in which CQI is fed back on the PUCCH. Each subframe (lms) consists of a series of Orthogonal Frequency Division Multiplexing (OFDM) symbols. Taking the length of the normal cyclic prefix (CP) (normal CP) as an example, one subframe is composed of two slots, and each slot contains 7 OFDM symbols. On each PUCCH OFDM symbol, a multi-user CQI transmission using Code Division Multiplexing (CDM) is adopted. On a PRB, up to 12 UEs can simultaneously transmit their respective CQIs. There are two OFDM symbols in each slot for transmitting a Reference Signal (RS), and five OFDM symbols are used for transmitting CQI data. For each UE, on one OFDM data symbol, it can be phase shifted by four phases. 10 077396 Quadrature Phase Shift Keying (QPSK) transmits two-bit channel coded CQI data. Therefore, in 3GPP LTE, each UE can transmit 20 CQI encoded data through PUCCH in one subframe. The information bits of the CQI on the PUCCH are at most 11 bits.

According to these design principles, the applicant has proposed a number of new physical channel structures for transmitting multi-user channel shield indication information in the Chinese patent application file No. 200910091275.X, including: At least two user terminals use the same The time-frequency resource transmits respective channel quality indication information, where the time-frequency resource includes at least one frequency domain unit in the frequency domain, and includes at least two data time domain unit sets in the time domain, and each data time domain unit set includes at least Two data time domain units, and channel quality indication information of each user terminal is transmitted on the at least one data time domain unit set by using time domain code division multiple access.

In the Chinese patent application file No. 200910091275.X, a channel structure for transmitting CQI information by means of code division multiple access is proposed. Based on these channel structure designs, one possibility is that Long-Term Evolution-Advance (LTE-A) or subsequent evolution systems support one or both of the feedback channel structures, providing different feedback capacity support ( Between the PUCCH 20bits and PUSCH 288bits provided by R8), the uplink transmission efficiency is improved.

The general channel information feedback is divided into two types: periodic feedback and aperiodic feedback. The non-periodic feedback method can schedule the UE to perform channel information feedback according to the real-time need, and the overhead is low, which is suitable for the burst service situation.

There is currently no aperiodic feedback scheme for this new CQI feedback structure. Summary of the invention

An embodiment of the present invention provides a method and a device for scheduling channel feedback channel information, which are used to solve a method for scheduling feedback channel information according to an embodiment of the present invention. The method includes: the base station will feedback content and feedback of the set channel information. The information format information is sent to the terminal; the base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and Before transmitting the scheduling command, the base station sends, to the terminal, uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used by the terminal to feed back channel information, or the base station passes The scheduling command is used to send uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used by the terminal to feed back channel information to the terminal.

A method for feeding back channel information according to an embodiment of the present invention includes:

The terminal receives the channel information feedback content and the feedback information format information sent by the base station;

The terminal obtains a scheduling command sent by the base station for scheduling the terminal to perform channel information feedback through blind detection, and

Before receiving the scheduling command, the terminal receives uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spreading information, which are used to indicate that the terminal feeds back channel information, or the terminal Obtaining uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information in the scheduling command;

And the terminal, according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information feedback channel information.

The apparatus for scheduling feedback channel information provided by the embodiment of the present invention includes:

The channel information feedback rule sending unit sends the set channel information feedback content and the feedback information format information to the terminal;

a control unit, configured to send, to the terminal, a scheduling command for scheduling the terminal to perform channel information feedback, and

Before transmitting the scheduling command, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information are sent to the terminal, or used by using a scheduling command. The uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information are sent to the terminal.

An apparatus for feeding back channel information according to an embodiment of the present invention includes:

a first receiving unit, configured to receive channel information feedback content and feedback information format sent by the base station 2010/077396

a second receiving unit, configured to obtain, by using a blind detection, a scheduling command sent by the base station to schedule the terminal to perform channel information feedback, and

Before receiving the scheduling command, receiving uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spreading information, which are used to indicate that the terminal feeds back channel information, or from the scheduling command Obtaining uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information;

a channel information feedback unit, configured to: according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information feedback channel information .

In the embodiment of the present invention, the base station sends the set channel information feedback content and the feedback information format information to the terminal in advance; the base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and sends the scheduling command. The uplink resource information used for instructing the terminal to feed back the channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are sent to the terminal, or the scheduling command is used to indicate the feedback of the terminal. The uplink resource information used for the channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are transmitted to the terminal.

Correspondingly, the terminal receives the channel information feedback content and the feedback information format information sent by the base station; the terminal obtains a scheduling command sent by the base station for scheduling the terminal to perform channel information feedback by using the blind detection, where the receiving or receiving the scheduling command is received Before receiving the scheduling command, receiving the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spreading information, which are used to indicate the feedback channel information of the terminal, and the terminal feedbacks the content according to the channel information. The feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information feedback channel information. When the CQI information is transmitted by multiple users, the method of the embodiment of the present invention implements feedback of the aperiodic control channel information. DRAWINGS FIG. 1 is a schematic diagram of a 3GPP Rel-8 LTE PUCCH CQI feedback in the prior art; FIG. 2 is a schematic flowchart of a method for scheduling feedback channel information according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a scheduling device for feeding back channel information according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of an apparatus for feeding back channel information according to an embodiment of the present invention. detailed description

As shown in FIG. 2, this embodiment provides a method for scheduling feedback channel information, including the following steps:

Step 201: The base station sends the set channel information feedback content and the feedback information format information to the terminal.

Step 202: The base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and

Before transmitting the scheduling command, the base station sends, to the terminal, uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used by the terminal to feed back channel information, or the base station passes the The scheduling command is used to send uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used by the terminal to feed back channel information to the terminal.

The base station may send a Downlink Control Indicator (DCI) to the terminal, and configured to schedule the terminal to perform channel information feedback, where the DCI information includes uplink resource information used for instructing the terminal to feed back channel information, and uplink. The pilot sequence cyclic shift information and the orthogonal sequence spread spectrum information are demodulated.

Before transmitting the scheduling command to the terminal, the base station may send, by using the high layer signaling, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used by the terminal to feed back the channel information to the terminal. The terminal.

The scheduling command is: a CQI request bit field in uplink scheduling signaling. The orthogonal sequence spreading related information includes: spreading sequence number information used by the user. When the system supports the at least two types of the spreading sequence, the method further includes: sending, by the base station, the set spreading sequence length information to the terminal by using user-specific RC signaling, when the scheduling command is sent or before the scheduling command is sent. .

When the system supports at least two types of spreading sequences, the orthogonal sequence spreading information further includes: spreading sequence length information.

When the system supports the at least two types of the spreading sequence, the method further includes: sending, by the base station, the set length of the spreading sequence to the terminal by using the scheduling command, where the scheduling command is DCI information . Alternatively, the system broadcasts the feedback channel structure type information and indirectly determines the type of the spreading sequence length according to the protocol.

If the standard design supports multiple sequence length types, and the M types are supported in the system at the same time, the feedback channel structure type information may be notified in the user-specific RRC signaling or DCI and the extension sequence length type may be indirectly determined according to the protocol agreement. , User-specific RRC signaling notifications can also be used.

When the system supports at least two types of spreading sequences, the method may further include: presetting the spreading sequence length information at the terminal.

If the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are sent to the terminal when the scheduling command is sent, the base station passes the scheduling. The command sends the indication information of the frequency hopping to the terminal, and the scheduling command is DCI information.

If the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back the channel information are sent to the terminal before the sending of the scheduling command, the method further includes: The indication information of the frequency hopping is sent to the terminal through user-specific RRC signaling.

The bit length of the DCI information is a set bit length, and the DCI information includes a DCI format indication field for distinguishing different DCI information of the same bit length.

The scheduling command is physical layer control signaling, and is used to indicate uplink resource information and uplink demodulation used by the terminal to feed back channel information through high layer signaling before transmitting physical layer control signaling. The pilot sequence cyclic shift information and the orthogonal sequence spread spectrum information are sent to the terminal, and the high layer signaling further includes: user group information. When the physical layer control signaling is DCI information, the information used to notify each member terminal in the joint scheduling group to perform channel information feedback corresponds to one bit transmission in the DCI information. The physical layer control signaling includes: information for notifying whether the channel information feedback of the terminal of the at least one joint scheduling group is triggered or not.

The user group information includes: a joint scheduling group identifier in which the terminal is located, a Radio Network Temporary Identification (RNTI) information allocated by the base station for the joint scheduling group, and relative location information of the terminal in the joint scheduling group. The relative location information of the terminal in the joint scheduling group includes: the spreading sequence number information of the terminal in the joint scheduling group.

Referring to FIG. 3, a method for feeding back channel information provided by this embodiment includes the following steps:

Step 301: The terminal receives the channel information feedback content and the feedback information format information sent by the base station.

Step 302: The terminal obtains a scheduling command sent by the base station to schedule the terminal to perform channel information feedback by using a blind detection, and

Before receiving the scheduling command, the terminal receives uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spreading information, which are used to indicate that the terminal feeds back channel information, or the terminal receives the scheduling command from the scheduling command. Obtaining uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information;

Step 303: The terminal feeds back the channel information according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information.

Upon receiving the scheduling command, the terminal may obtain the DCI information sent by the base station to schedule the terminal to perform channel information feedback by using the blind detection, where the DCI information includes an uplink resource used to indicate that the terminal feeds back the channel information. Information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information.

Before receiving the scheduling command, the terminal may receive, by using high layer signaling, a terminal for indicating the terminal. 6 The uplink resource information used for the feedback channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information. The scheduling command is: a CQI request bit field in uplink scheduling signaling. The orthogonal sequence spreading related information includes: spreading sequence number information used by the user.

When the system supports the length of the at least two types of the spreading sequence, before receiving the scheduling command or before sending the scheduling command, the method further includes: receiving, by the terminal, the base station by using a user-specific Radio Resource Control (RRC) signaling Spread spectrum sequence length information.

When the system supports the at least two types of the spreading sequence, when the scheduling command is received, the method further includes: receiving, by the terminal, the spreading sequence length information sent by the base station, where the scheduling command is DCI information.

When the system supports at least two types of spreading sequence lengths, the method further includes: the terminal pre-preserving the set spreading sequence length information for performing channel information feedback.

If the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are received when the scheduling command is received, the terminal receives the scheduling command by using the scheduling command. The indication information of the frequency hopping sent by the base station side, and the scheduling command is DCI information.

If the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used to indicate the feedback channel information of the terminal are received before receiving the scheduling command, the method further includes: The user-specific RRC signaling receives the indication information of the frequency hopping sent by the base station.

The scheduling command is physical layer control signaling, and before receiving the physical layer control signaling, the uplink resource information used by the base station to indicate the feedback channel information of the terminal, and the uplink demodulation pilot sequence loop are received by the high layer signaling. And the shifting information and the orthogonal sequence spread spectrum information, where the high layer signaling further includes: user group information. 6 The technical solution of the present invention will be described below by way of a detailed embodiment.

The new channel information feedback structure is used for periodic feedback configuration. The main idea is that the feedback content and feedback information format are pre-configured by high-level signaling. The specific feedback time and feedback resources can be scheduled by physical layer signaling. There are several possible designs. Program:

Solution 1: Single-user scheduling scheme

The first case: The non-period channel information feedback is scheduled by the newly designed DCI format. At this time, the DCI needs to include at least the following information fields.

(1) The uplink resource allocation information is used to indicate the uplink PRB resource number used by the user to feed back the channel information, and the type 2 resource allocation mode already defined in the R8 standard may be used to save the signaling overhead, and the specific required number of bits is according to the uplink. The system bandwidth varies, as shown in the following table:

Table 1

(2) Upstream demodulation pilot sequence cyclic shift value, the domain can occupy 3 bits;

(3) Orthogonal sequence spread spectrum related information.

If the standard design supports only one spreading sequence length (set to k), there is no need to inform the spreading sequence length information. The system uses " ^lQg ^" Ibits to inform the user of the spreading sequence number used.

If the standard design supports multiple types of spreading sequence lengths (M types), but only one type can be configured in the system at the same time, then which type of spreading sequence length type is used for notification by the system broadcast, or system broadcast The feedback channel structure type information is notified and the length of the spreading sequence is determined indirectly according to the manner agreed by the protocol. It is necessary to use the ^g2 bits in the DCI to inform the spreading sequence number information, where k is the number of available spreading sequences in the case of the longest spreading sequence length supported by the system, or k is the length of the spreading sequence currently supported by the system. The number of available spreading sequences.

If the standard design supports multiple types of spreading sequence lengths (M types), and the M types are supported in the system at the same time, it is preferable to use the "^{lc" g2 M} l bits to inform the UE of the spreading sequence length class. For the N2010/077396 type, the information can be notified by the user-specific RRC signaling, or can be notified by DCI, or the feedback channel structure type information can be notified in the user-specific RRC signaling or DCI and indirectly determined according to the protocol agreement. Frequency sequence length type; simultaneously use "^{lc" g2} bits in DCI to inform the spreading sequence number information, k is the number of available spreading sequences in the case of the longest spreading sequence length supported by the system, or k is currently supported by the system The number of available spreading sequences in the case of the length of the spreading sequence. Alternatively, the two types of information, such as the length of the spreading sequence and the number of the spreading sequence, may be jointly encoded and notified, and carried in the DCI: for example, there are M kinds of spreading sequences. For the length type, the number of available spreading sequences for each type is kl, k2, ..., kM, then use "^ ^{1 + +} ··'"^ ^Μ )Ίΐ^.

(4) The indication information of the frequency hopping or not, the domain occupies 1 bit, which is used to notify the current user whether the channel information feedback is frequency hopping.

Preferably, in order to reduce the number of PDCCH blind detections of the UE, the DCI format is made into the same bit length as the other DCI formats of the LTE-A, and may be terminated by a standard or the like. And, a DCI format indication field is reserved in the DCI for distinguishing different DCI formats of the same bit length.

The second case:

The lbit CQI request (CQI request) information field in the existing uplink scheduling signaling is used to perform non-period feedback scheduling. The specific method is as follows:

(1) The base station informs the terminal of the following information in advance through high layer signaling:

Uplink resource allocation information for feedback (user-specific RRC signaling);

Orthogonal spread spectrum sequence related information, the specific information organization format refers to the description of the orthogonal sequence spread spectrum related information in the first case, the difference is that all indication information here is sent through high layer signaling (user-specific RRC signaling) ;

The indication information of the frequency hopping or not is sent by the user-specific RRC signaling or the system broadcast; the base station informs the terminal to perform channel information feedback according to the pre-configured manner of the high-layer signaling by using the CQI request bit field in the uplink scheduling signaling.

Option 2: Multi-user joint scheduling scheme. In order to further reduce the control signaling overhead of the physical layer, the user may be pre-grouped and coordinated by a group of users. One possible implementation method is as follows:

(1) The base station informs the terminal in advance through the user-specific high-level signaling: the uplink resource allocation information for feedback, and the information about the orthogonal spreading sequence. The specific information organization format is described in the first case, and the difference is described. All indication information here is that the indication information of the frequency hopping or not and the user group information are sent through the high layer signaling. The user group information includes: in which joint scheduling group the user is divided, the RNTI information allocated by the base station for the joint scheduling group, and the relative position of the scheduling information of the user in the joint scheduling group, that is, the UE described in the joint scheduling Numbering information within the group.

(2) The base station schedules user channel information feedback through physical layer control signaling.

Taking a group of N users as an example, as shown in the following table, whether the base station needs to perform channel information feedback for each user using the lbit identifier (for example, 1 indicates that feedback is needed, 0 indicates no feedback is required), and N bits form a DCI to be sent to User; There can be multiple joint scheduling groups in the system.

For the first case in the first scenario, the method implemented on the terminal side includes the following steps: Step 1: The UE learns the channel information feedback content and the feedback information format in advance;

Step 2: The UE obtains the DCI information of the scheduling channel information feedback by blind detection. In the blind detection process, the explicit format distinguishing information field in the DCI may be used to distinguish different DCI formats, and the uplink resource allocation information and the uplink demodulation pilot are obtained therefrom. Sequence cyclic shift value information, orthogonal sequence spread spectrum related information, frequency hopping or not related information;

For the acquisition of the information related to the orthogonal spreading sequence, there are three ways:

a) if the standard specifies that only one type of spreading sequence length is supported, the UE obtains orthogonal spreading sequence number information from the DCI;

b) If the standard design supports multiple types of spreading sequence lengths (M types), but only in the system 10 077396 configures a type, then the UE learns the length of the spreading sequence from the system broadcast, or the system broadcasts the feedback channel structure type information and indirectly determines the length of the spreading sequence according to the protocol, and obtains from the DCI. Spread spectrum sequence number information;

c) If the standard design supports multiple sequence length types, these types are also supported in the system. Then, the UE learns the length of the spreading sequence by using the exclusive RC signaling or the DCI, or notifies the feedback channel structure type information in the RRC signaling or the DCI dedicated to the user, and indirectly determines the length of the spreading sequence according to the manner agreed by the protocol, and Knowing the spreading sequence number information through DCI;

Step 3: The UE sends the channel information in a fixed format according to the foregoing signaling configuration in a predefined subframe position (standardly, the same as LTE R8).

UE behavior based on the second case in scenario one:

Step 1: The UE knows the channel information feedback content and the feedback information format in advance;

Step 2: The UE obtains the following information in advance through high layer signaling:

A) uplink resource allocation information for feedback (obtained by user-specific RRC signaling);

B) information about orthogonal spreading sequences (obtained by user-specific RRC signaling);

C) indication information of frequency hopping or not (obtained by user-specific RRC signaling or system broadcast); Step 3: The UE obtains uplink scheduling signaling through blind detection, and obtains channel information feedback through the CQI request information field therein. ;

Step 4: The UE sends the channel information in a fixed format according to the foregoing signaling configuration in a predefined subframe position (standardly, the same as LTE R8).

UE behavior based on scenario 2:

Step 1: The UE knows the content format of the channel information feedback in advance;

A. uplink resource allocation information for feedback (obtained through user-specific RRC signaling);

B. Orthogonal spreading sequence related information (obtained by user-specific RRC signaling);

C. indication information of frequency hopping or not (obtained through user-specific RRC signaling);

D. User group information (obtained through user-specific RRC signaling). The user group information includes: a joint scheduling group number where the user is located, and an RNTI letter of the joint scheduling group where the user is located. 10 077396, the relative position of the user's scheduling information in the joint scheduling group;

Step 3: The UE obtains the DCI information corresponding to the joint scheduling group in which the UE is located, and searches for the corresponding scheduling information according to the relative position described above to obtain whether channel information feedback is needed.

As shown in FIG. 4, the apparatus for scheduling feedback channel information provided by the embodiment includes: a channel information feedback rule sending unit 41, configured to send the set channel information feedback content and feedback information format information to the terminal;

The control unit 42 is configured to send, to the terminal, a scheduling command for scheduling the terminal to perform channel information feedback, and

Sending the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back the channel information to the terminal, or by using the scheduling command, before sending the scheduling command. The uplink resource information, the uplink demodulation frequency sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information are sent to the terminal.

The control unit 42 is configured to:

Sending DCI information to the terminal, and scheduling the terminal to perform channel information feedback, where the DCI information includes uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal Sequence spread spectrum information.

The control unit 42 is configured to:

Before transmitting the scheduling command, uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information are sent to the terminal by using high layer signaling.

The scheduling command is: a CQI request bit field in uplink scheduling signaling. The orthogonal sequence spreading related information includes: spreading sequence number information used by the user.

The control unit 42 is further configured to:

When the system supports at least two types of spreading sequences, the set spreading sequence length information is sent to the terminal through user-specific RRC signaling before the scheduling command is sent. 6 The control unit 42 is further configured to:

When the system supports at least two types of spreading sequences, when the scheduling command is sent, the set spreading sequence length information is sent to the terminal by using the scheduling command, where the scheduling command is DCI information.

The control unit 42 is further configured to:

When the system supports at least two types of spreading sequences, the length of the spreading sequence is pre-set in the terminal.

.

The scheduling command is physical layer control signaling; the high layer signaling further includes: user group information.

The user group information includes: a joint scheduling group identifier of the terminal, a radio network temporary identifier RNTI information allocated by the base station for the joint scheduling group, and relative location information of the terminal in the joint scheduling group.

The control unit 42 is configured to:

When the physical layer control signaling is DCI information, information for notifying each member terminal in the joint scheduling group to perform channel information feedback corresponds to one bit transmission in the DCI information.

The physical layer control signaling includes: information for notifying whether the channel information feedback of the terminal of the at least one joint scheduling group is triggered or not.

Referring to FIG. 5, an apparatus for feeding back channel information according to this embodiment includes: a first receiving unit 51, configured to receive channel information feedback content and feedback information format information sent by a base station;

a second receiving unit 52, configured to obtain, by using a blind detection, a scheduling command sent by the base station for scheduling the terminal to perform channel information feedback, and

Before receiving the scheduling command, receiving uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information, or from the scheduling command Obtaining uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information;

The channel information feedback unit 53 is configured to: according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and orthogonal 77396 Sequence spread spectrum information, feedback channel information.

The second receiving unit 52 is configured to:

The DCI information sent by the base station for scheduling the terminal to perform channel information feedback is obtained by using the blind detection, where the DCI information includes uplink resource information used for instructing the terminal to feed back channel information, and uplink demodulation pilot sequence cyclic shift information. And orthogonal sequence spread spectrum information.

The second receiving unit 52 is configured to:

Before receiving the scheduling command, the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spreading information are received through the high layer signaling.

The second receiving unit 52 is further configured to:

When the system supports at least two types of spreading sequence lengths, the spreading sequence length information sent by the base station is received by the user-specific RRC signaling before receiving the scheduling command.

The second receiving unit 52 is further configured to:

When the system supports the at least two types of the spreading sequence, when receiving the scheduling command, the scheduling command receives the spreading sequence length information sent by the base station, where the scheduling command is DCI information.

The first receiving unit 51 is further configured to:

When the system supports at least two types of spreading sequence lengths, the set spreading sequence length information is saved in advance for channel information feedback.

The second receiving unit 52 is further configured to:

The scheduling command receives the indication information of the frequency hopping sent by the base station side.

The second receiving unit 52 is further configured to:

If the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are received before receiving the scheduling command, the user-specific RC signaling is adopted. Receiving indication information of frequency hopping sent by the base station.

The bit length of the DCI information is a set bit length, and the DCI information includes 6

The DCI format indication field is used to distinguish different DCI information of the same bit length.

The high layer signaling further includes: user group information.

In the embodiment of the present invention, the base station sends the set channel information feedback content and the feedback information format information to the terminal in advance; the base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and Before transmitting the scheduling command, the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are sent to the terminal. Correspondingly, the terminal receives the channel information feedback content and the feedback information format information sent by the base station; the terminal obtains the scheduling command sent by the base station for scheduling the terminal to perform channel information feedback by using the blind detection, and when receiving the scheduling command or receiving Before receiving the scheduling command, receiving uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spreading information; the terminal according to the channel information feedback content, The feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information feedback channel information. When the CQI information is transmitted by multiple users, the method of the embodiment of the present invention implements feedback of the aperiodic control channel information.

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. Instructions executable to be executed by a processor of a general purpose computer, a special purpose computer, a computer or other programmable data processing device may be used to implement a block or multiple in a flow or flow diagram and/or block diagram of a flowchart The device of the function specified in the box.

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. 2010/077396 causes a series of operational steps to be performed on a computer or other programmable device to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementation in a flow or a flow of flowcharts and / or block diagram The steps of a function specified in a box or multiple boxes.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A method for scheduling feedback channel information, characterized in that the method comprises the following steps:

The base station sends the set channel information feedback content and the feedback information format information to the terminal; the base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and

The method according to claim 1, wherein the base station sends a scheduling command for scheduling the terminal to perform channel information feedback to the terminal, and the base station uses the scheduling command to indicate that the terminal feeds back channel information. The uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are sent to the terminal, including:

The base station sends the downlink control indication DCI information to the terminal, and is configured to schedule the terminal to perform channel information feedback, where the DCI information includes uplink resource information used for instructing the terminal to feed back channel information, and cyclic demodulation of the uplink demodulation pilot sequence. Information and orthogonal sequence spread spectrum information.

The method according to claim 1, wherein the base station, after transmitting the scheduling command, uses uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and positive The cross-sequence spread spectrum information is sent to the terminal, including:

Before transmitting the scheduling command, the base station sends uplink resource information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information used for instructing the terminal to feed back channel information to the terminal by using high layer signaling.

The method according to claim 3, wherein the scheduling command is: a channel quality information CQI request bit field in uplink scheduling signaling.

The method according to claim 1, wherein the orthogonal sequence spread spectrum related information comprises: spreading sequence number information used by a user.

The method according to claim 1 or 5, wherein when the system supports at least two types of spreading sequences, before the sending of the scheduling command, the method further comprises:

The base station sends the set spreading sequence length information to the terminal through user-specific radio resource control RRC signaling.

The method according to claim 5, wherein when the system supports at least two types of spreading sequence lengths, the method further comprises:

The base station sends the set spreading sequence length information to the terminal by using the scheduling command, where the scheduling command is DCI information.

The method according to claim 1, wherein when the system supports at least two types of spreading sequences, the method further comprises: presetting the spreading sequence length information in the terminal.

The method according to claim 2, wherein the DCI information further includes: indication information of frequency hopping or not.

The method according to claim 1, wherein, if the 杲 base station sends the scheduling command, the uplink resource information used for instructing the terminal to feed back channel information, and the uplink demodulation pilot sequence cyclic shift information And the orthogonal sequence spread spectrum information is sent to the terminal, where the method further includes:

The base station sends the indication information of the frequency hopping to the terminal through the user-specific RRC signaling.

The method according to claim 2, wherein the bit length of the DCI information is a set bit length, and the DCI information includes a DCI format indication field, which is used to distinguish different DCIs of the same bit length. information.

The method according to claim 3, wherein the scheduling command is physical layer control signaling, and the high layer signaling further includes: user group information.

The method according to claim 12, wherein the user group information comprises: an identifier of a joint scheduling group in which the terminal is located, a radio network temporary identifier RNTI information allocated by the base station to the joint scheduling group, and the terminal is Relative location information within the joint scheduling group.

The method according to claim 12, wherein, when the physical layer control signaling is DCI information, the information used to notify each member terminal in the joint scheduling group to perform channel information feedback is separately in the DCI information. Corresponding to one bit transmission.

The method according to claim 12, wherein the physical layer control signaling includes: information for notifying whether the channel information feedback of the terminal of the at least one joint scheduling group is triggered or not.

A method for feeding back channel information, the method comprising the steps of: receiving, by a terminal, channel information feedback content and feedback information format information sent by a base station;

Before receiving the scheduling command, the terminal receives uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information, or the terminal from the scheduling Obtaining uplink resource information used for instructing the terminal to feed back channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information;

The terminal feeds back the channel information according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information.

The method according to claim 16, wherein the terminal obtains a scheduling command sent by the base station for scheduling the terminal to perform channel information feedback by using a blind detection, and the terminal obtains, from the scheduling command, the terminal for indicating the terminal. The uplink resource information used for the feedback channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information include:

The terminal obtains the DCI information sent by the base station for scheduling the terminal to perform channel information feedback by using the blind detection, where the DCI information includes uplink resource information used for instructing the terminal to feed back channel information, and cyclically shifting the uplink demodulation pilot sequence. Information and orthogonal sequence spread spectrum information.

The method according to claim 16, wherein the terminal receives, after receiving the scheduling command, uplink resource information used for instructing the terminal to feed back channel information, and uplink demodulation pilot sequence cyclic shift information and Orthogonal sequence spread spectrum information, including:

Before receiving the scheduling command, the terminal receives, by using the high layer signaling, a feedback for indicating the terminal. Uplink resource information used for channel information, uplink demodulation pilot sequence cyclic shift information, and orthogonal sequence spread spectrum information.

The method according to claim 18, wherein the scheduling command is: a CQI request bit field in uplink scheduling signaling.

The method according to claim 16, wherein the orthogonal sequence spread spectrum related information comprises: spreading sequence number information used by a user.

The method according to claim 16 or 20, wherein when the system supports at least two types of spreading sequences, before receiving the scheduling command, the method further comprises:

The terminal receives the spreading sequence length information sent by the base station by using user-specific RRC signaling.

The method according to claim 20, wherein when the system supports at least two types of spreading sequences, when receiving the scheduling command, the method further includes:

The terminal receives the spreading sequence length information sent by the base station by using the scheduling command, where the scheduling command is DCI information.

The method according to claim 20, wherein when the system supports at least two types of spreading sequences, the method further comprises: the terminal pre-storing the set spreading sequence length information for performing channel information feedback.

The method according to claim 17, wherein the terminal further receives the indication information of the frequency hopping sent by the base station by using the scheduling command.

The method according to claim 16, wherein, if the terminal receives the scheduling command, it receives uplink resource information used to indicate that the terminal feeds back channel information, and cyclically shifts the uplink demodulation pilot sequence. And the information and the orthogonal sequence spread spectrum information, the method further includes: the terminal receiving the indication information of the frequency hopping sent by the base station by using the user-specific RRC signaling.

The method according to claim 17, wherein the bit length of the DCI information is a set bit length, and the DCI information includes a DCI format indication field, which is used to distinguish different DCIs of the same bit length. information.

The method according to claim 18, wherein the scheduling command is physical layer control signaling, and the high layer signaling further includes: user group information.

A scheduling device for feeding back channel information, comprising: a channel information feedback rule sending unit, configured to send the set channel information feedback content and the feedback information format information to the terminal;

Sending the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used for instructing the terminal to feed back the channel information to the terminal, or by using the scheduling command, before sending the scheduling command. The uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are sent to the terminal.

The device according to claim 28, wherein the control unit is configured to: send downlink control indication DCI information to the terminal, and send the terminal to perform channel information feedback, where the DCI information is included The uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information used by the terminal to feed back channel information are indicated.

The device according to claim 28, wherein the control unit is configured to: after the sending the scheduling command, use uplink signaling to indicate uplink resource information and uplink solution used by the terminal to feed back channel information. The pilot sequence cyclic shift information and the orthogonal sequence spread spectrum information are transmitted to the terminal.

The apparatus according to claim 30, wherein the scheduling command is: a CQI request bit field in uplink scheduling signaling.

The apparatus according to claim 28, wherein the orthogonal sequence spread spectrum related information comprises: spreading sequence number information used by a user.

33. Apparatus according to claim 28 or claim 32 wherein said control unit is further used to:

When the system supports at least two types of spreading sequence lengths, the set spreading sequence length information is sent to the terminal through user-specific radio resource control RRC signaling before the scheduling command is sent.

The device according to claim 32, wherein the control unit is further configured to: When the system supports at least two types of spreading sequences, when the scheduling command is sent, the set spreading sequence length information is sent to the terminal by using the scheduling command, where the scheduling command is DCI information.

35. The apparatus according to claim 32, wherein the control unit is further configured to:

When the system supports at least two types of spreading sequences, the spreading sequence length information is preset in the terminal.

The apparatus according to claim 30, wherein the scheduling command is physical layer control signaling, and the high layer signaling further includes: user group information.

The apparatus according to claim 36, wherein the user group information comprises: a joint scheduling group identifier in which the terminal is located, a radio network temporary identifier RNTI information allocated by the base station to the joint scheduling group, and the terminal in the joint Relative location information within the scheduling group.

The device according to claim 36, wherein the control unit is configured to: when the physical layer control signaling is DCI information, be used to notify each member terminal in the joint scheduling group to perform channel information. The feedback information corresponds to one bit transmission in the DCI information.

The device according to claim 36, wherein the physical layer control signaling includes: information for notifying whether the channel information feedback of the terminal of the at least one joint scheduling group is triggered or not.

40. A device for feeding back channel information, comprising:

a first receiving unit, configured to receive channel information feedback content and feedback information format information sent by the base station;

a channel information feedback unit, configured to: according to the channel information feedback content, the feedback information format information, the uplink resource information, the uplink demodulation pilot sequence cyclic shift information, and an orthogonal sequence Column spread spectrum information, feedback channel information.

41. The apparatus according to claim 40, wherein the second receiving unit is configured to:

42. The apparatus according to claim 40, wherein the second receiving unit is configured to:

43. The apparatus according to claim 42, wherein the scheduling command is: a CQI request bit field in uplink scheduling signaling.

44. The apparatus according to claim 40, wherein the orthogonal sequence spread spectrum related information comprises: spread spectrum sequence number information used by a user.

45. The apparatus according to claim 40 or 44, wherein the second receiving unit is further configured to:

When the system supports at least two types of spreading sequences, the spreading sequence length information sent by the base station is received by the user-specific radio resource control RRC signaling before receiving the scheduling command.

46. The apparatus according to claim 44, wherein the second receiving unit is further used to:

47. The apparatus according to claim 44, wherein the first receiving unit is further used to:

48. The apparatus according to claim 41, wherein the second receiving unit is further used to:

49. The apparatus according to claim 40, wherein the second receiving unit is further used to:

If the uplink resource information used for instructing the terminal to feed back channel information, the uplink demodulation pilot sequence cyclic shift information, and the orthogonal sequence spread spectrum information are received before receiving the scheduling command, the user-specific RRC signaling is adopted. Receiving indication information of frequency hopping sent by the base station.

The device according to claim 41, wherein the bit length of the DCI information is a set bit length, and the DCI information includes a DCI format indication field, which is used to distinguish different DCIs of the same bit length. information.

The apparatus according to claim 42, wherein the high layer signaling further comprises: user group information.