WO2011054176A1

WO2011054176A1 - Method, device and system for uplink control channel resources configuration

Info

Publication number: WO2011054176A1
Application number: PCT/CN2010/001729
Authority: WO
Inventors: 林亚男; 刘婷婷; 潘学明; 沈祖康
Original assignee: 电信科学技术研究院
Priority date: 2009-11-03
Filing date: 2010-10-29
Publication date: 2011-05-12
Also published as: CN102014505A; CN102014505B

Abstract

A method, a device and a system for uplink control channel resources configuration are provided. The method comprises that: a base station determines that whether there are the uplink control channel resources corresponding to a Physical Downlink Control Channel (PDCCH) of a downlink carrier to be fed back in an uplink carrier for ACK/NACK feedback, and sets the identifier of available resources in the PDCCH according to the determination result; a user equipment detects the PDCCH in the downlink carrier, and employs the corresponding resources for ACK/NACK feedback according to the identifier of available resources in the PDCCH. With the provided method, device and system, the waste of resources caused by uplink feedback channel spending in the system could be reduced.

Description

The present invention claims to be submitted to the Chinese Patent Office on November 3, 2009, and the application number is 200910237068.0. The invention is entitled "A Method, Device and System for Configuring an Uplink Control Channel Resource" Priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to a wireless communication technology, and in particular, to a method, a device, and a system for configuring an uplink control channel resource.

The long-term evolution system uses HARQ (Hybrid Automatic Repeat Request) to improve the reliability of data transmission. When the downlink HARQ function is enabled, the user terminal decodes the received downlink data packet. The ACK is fed back to the base station. If the decoding fails, the NACK is fed back to the base station, and the base station is required to retransmit the data packet. After the downlink persistent scheduling service ends, the base station sends an SPS (Semi-persistent Scheduling) resource release indication to the user terminal. Notifying the user terminal to release all the resources allocated to the service, and the user terminal will correctly feed back the ACK after receiving the indication.

For the long-term evolution multi-carrier system, in order to support a wider system bandwidth than the LTE system, such as 100 MHz, the specific implementation includes: A, directly allocate the spectrum of 100M bandwidth (as shown in Figure 1); B, will be assigned to the present Some systems have been aggregated and used to provide large bandwidth for long-term evolution multi-carrier system. At this time, the uplink and downlink carriers in the system can be asymmetrically configured, that is, the user may occupy Ν(Ν>=1) The wave is downlinked, and Μ(Μ>=1) carriers are transmitted upstream (as shown in Figure 2).

The basic transmission scheme of the LTE system (Rel-8), which has been basically completed by the standardization work, is as follows: The frequency division duplex FDD system and the time division duplex TDD are shown in Figures 3 and 4, respectively. For each working carrier, downlink signaling, downlink data, uplink signaling, and uplink data, and transmission relationships between each other are defined. The two ends of the frequency band occupied by the uplink control signaling are transmitted by using a frequency hopping method, that is, within one subframe. In the two time slots, the uplink control signaling will occupy different frequency bands. Because the number of control channels that need to be carried in the uplink subframe cannot be dynamically learned, the system reserves certain resources in the uplink subframe for uplink. Control channel transmission.

For non-persistently scheduled ACK/NACK feedback transmission, the user terminal that performs feedback will calculate the resource (ie channel) number ("^) used for AC/NACK feedback according to its number ("^), ie each PDCCH Both correspond to an available uplink control channel resource.

In the long-term evolution multi-carrier system, when using the carrier wave aggregation, if the corresponding feedback resources are reserved for each downlink carrier in each uplink wave, there will be serious resource waste in the uplink carrier wave, and even there will be no The available uplink resources are used for data transmission, which will seriously affect the transmission efficiency of the system. Summary of the invention

An embodiment of the present invention provides a method, a device, and a system for configuring an uplink control channel resource, which are used to solve the problem that in a long-term evolution multi-carrier system, when a carrier wave is used, if each uplink wave is a downlink carrier Reserve corresponding feedback resources, which will lead to serious waste of resources in the uplink.

A method for configuring an uplink control channel resource includes:

Determining, by the base station, the uplink control channel resource corresponding to the physical downlink control channel PDCCH, on the uplink carrier that performs the AC/NACK feedback on the user terminal;

If it is determined that the uplink control channel resource does not exist, the base station sends an identifier of the available resource to the user terminal in the PDCCH; the identifier of the available resource is used to indicate that the user terminal uses the corresponding resource to perform AC / NACK feedback.

A method for configuring an uplink control channel resource includes:

The base station allocates an uplink control channel resource set, where the resource set includes a channel resource number corresponding to the channel resource available for the ACK/NACK feedback by the user terminal, and sends the uplink control channel resource set information to the user terminal by using signaling;

The base station determines whether the user terminal is present on the uplink carrier that performs ACK/NACK feedback. An uplink control channel resource corresponding to the physical downlink control channel PDCCH on the downlink carrier is to be fed back, and an identifier is set in the PDCCH according to the determination result, where the identifier is used to indicate whether the user terminal uses the channel resource in the uplink control channel resource set. Perform ACK/NACK feedback, and use the channel resource number,

A method for configuring an uplink control channel resource includes:

The user terminal reads configuration signaling sent by the base station, and acquires uplink control channel resource set information that is available for the ACK/NACK feedback provided by the user terminal set in the base station;

The user terminal detects the PDCCH of the downlink carrier to be fed back, determines whether to use the channel resource in the uplink control channel resource set to perform ACK/NACK feedback, and uses the uplink control channel according to the identifier set in the PDCCH. The corresponding channel resource used when the channel resource in the resource set performs ACK/NACK feedback.

A base station device includes:

And an allocating module, configured to allocate an uplink control channel resource set to the user terminal in advance, and send the uplink control channel resource set information to the user terminal by using a signaling, where the uplink control channel resource set includes at least one or one group of ACK/ NACK: the channel resource number available for feedback;

a determining module, configured to determine, on the uplink carrier that performs the ACK/NACK feedback, the source, and set an identifier in the PDCCH, where the identifier is used to indicate whether the user terminal uses the channel resource in the uplink control channel resource set Performing ACK/NACK feedback, and corresponding channel resource number or resource group number used when performing ACK/NACK feedback using channel resources in the uplink control channel resource set.

A user terminal, comprising:

a reading module, configured to read configuration signaling sent by the base station, and obtain uplink control channel resource set information that is available for ACK/NACK feedback provided by the user terminal set in the base station;

a channel resource determining module, configured to detect a PDCCH of a downlink carrier to be fed back, and determine, according to the identifier set in the PDCCH, whether to use channel resources in the uplink control channel resource set ACK/NACK feedback, and a corresponding channel resource number or resource group number used when ACK/NACK feedback is performed using channel resources in the uplink control channel resource set.

- A system for configuring uplink control channel resources includes:

a base station, configured to determine, on an uplink carrier that performs ACK/NACK feedback, whether the uplink control channel resource corresponding to the physical downlink control channel PDCCH is present, and when determining that there is no uplink control channel resource, The setting may be sent to the user terminal by using an identifier of the resource;

The user terminal is configured to detect a PDCCH of the downlink carrier, and use the corresponding resource to perform ACK/NACK feedback according to the identifier of the available resource in the PDCCH.

As the method is a combination of a dynamic indication and a semi-static indication, for the long-term evolution carrier aggregation system, the example of the invention can reduce the resource reservation and configuration of the uplink feedback channel overhead in the system, and can not only improve the long-term evolution multi-carrier wave Upgrade system performance and compatibility with LTE Release 8 systems. DRAWINGS

1 and 2 are schematic diagrams of bandwidth allocation of a long-term evolution multi-carrier system in the prior art;

3 and FIG. 4 are schematic diagrams of the LTE system (Rd-8) intermediate frequency division duplex FDD system and the time division duplex TDD carrier wave in the prior art;

FIG. 5 is a flowchart of a method for configuring an uplink control channel resource according to an embodiment of the present invention; FIG. 6 is a schematic diagram of a carrier application for signal transmission in a specific application environment;

FIG. 7 is a flowchart of a method for processing a base station end according to an embodiment of the present invention;

FIG. 8 is a flowchart of a terminal side processing procedure of a method according to an embodiment of the present invention;

FIG. 9 is a structural diagram of a base station device according to an embodiment of the present invention;

FIG. 10 is a structural diagram of a user terminal device according to an embodiment of the present invention; FIG.

FIG. 11 is a structural diagram of a system for configuring an uplink control channel resource according to an embodiment of the present invention. detailed description The embodiment of the present invention provides a method, a device, and a system for configuring an uplink control channel resource. The method includes: determining, by the base station, whether the user terminal is in the uplink of the ACK/NACK feedback, and whether there is a feedback corresponding to the physical downlink control channel PDCCH. If the uplink channel resource is determined to be absent, the base station sets the identifier of the available resource in the PDCCH and sends the identifier to the user terminal. The user terminal uses the corresponding resource to perform ACK/NACK feedback according to the identifier of the available resource.

In an embodiment, the base station allocates an uplink control channel resource set, where the resource set includes a plurality of channel resource numbers that are available for ACK NACK feedback, and the base station determines whether the user terminal is on the uplink wave for performing ACK/NACK feedback. And feeding back an uplink control channel resource of the physical downlink control channel PDCCH on the downlink carrier, and setting an identifier, a line ACK/NACK feedback, and a usage of a channel resource element in the set according to the determination result; the user terminal reads the base station Sending the configuration signaling, knowing the set of uplink control channel resources, detecting the PDCCH of the downlink carrier to be fed back, determining whether to use the channel resource in the uplink control channel resource set according to the set identifier, and the channel resource element in the set Usage.

As shown in FIG. 5, this embodiment provides a method for configuring uplink control channel resources based on the consideration of compatible LTE systems.

For the LTE-A carrier aggregation system, it is required to feed back ACK/NACK information corresponding to the PDSCH on multiple downlink carriers and/or ACK/NACK information indicating multiple PDCCHs released by the SPS resources on an uplink carrier PUCCH. The user terminal needs multiple uplink control channel resources to perform ACK/NACK feedback.

Step 501: The upper layer uniformly allocates, to the user equipment, an uplink control channel resource set, where the resource set includes a channel resource number that is available for multiple ACK/NACK feedback.

The uplink control channel resource set has N>-1 elements, corresponding to the channel resource numbers available for N ACK/NACK feedback, the channel resource elements in the set can be shared by multiple user terminals, and the base station uses the same scheduling restriction. User terminals of a channel resource are time-divisionally fed back to avoid channel resource collision problems.

The resource property in the uplink control channel resource set is semi-persistently scheduled, and the base station is Configuring high-level signaling to allocate resources in the uplink control channel resource set.

Step 502: The base station determines, on the uplink carrier that performs the ACK/NACK feedback, whether there is an uplink control channel resource of the physical downlink control channel PDCCH to be fed back to the downlink carrier, and sets an identifier in the PDCCH according to the determination result. Determining whether the user terminal uses the channel resources in the uplink control channel resource set for ACK/NACK feedback, and the use of channel resource elements in the set;

The uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier wave is to be fed back on the uplink carrier that performs the ACK NACK feedback, that is, the uplink carrier wave for the ACK/NACK feedback is reserved. The uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier uses the resource as the feedback channel used for ACK/NACK feedback. In this case, it is not necessary to use any one of the uplink control channel resource sets allocated by the upper layer; The PDCCH informs the user terminal that the channel resource elements in the set allocated by the higher layer are not used.

The PDCCH signaling method can be carried on all PDCCHs.

DCI (downlink control information) is newly set to " ^{lGg2 (N+1} ) l-bit signaling, and "^{lc" g2 (N+1} ) l-bit signaling can also be used with Rel-8 existing The other signaling in the DCI format is jointly encoded, and even the signaling in the existing DCI format is used to represent the N+1 states.

However, if there is no uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier to be fed back, the uplink control channel corresponding to the CCE of the PDCCH on the downlink carrier to be fed back is not reserved. For the resource, one element in the set of uplink control channel resources allocated by the upper layer needs to be used as the feedback channel used for ACK/NACK feedback. The base station uses the PDCCH to inform the user terminal of the resource element number specifically used by the set in the set. The method for signaling the PDCCH signaling may be to newly set " ^{1ί3⁄42(Ν+1} )" 1 bit for the DCI format of all PDCCHs. Signaling, it is also possible to jointly encode "^ ^{2 (Ν +1} ) 1 bit signaling with other signaling in Rel-8 existing DCI format, and even reuse the signaling in the existing DCI format to represent this N +1 status.

Step 503: The user terminal reads the configuration signaling sent by the base station, learns the uplink control channel resource set, detects the PDCCH of the downlink wave to be sent, and determines whether to use the identifier according to the set identifier. Channel resources in the uplink control channel resource set, and channel resource numbers used for ACK/NACK feedback,

In another embodiment, N elements are included in the uplink control channel resource set, and corresponding to the N groups of available channel resource numbers for performing AC/NACK feedback by the user terminal, where N>=1, the physical Setting the identifier of the available resource in the downlink control channel PDCCH includes: setting “ ^gG2 bit signaling” for the downlink control information DCI format carried on the PDCCH for downlink scheduling, where the N+1 states corresponding to the signaling are The N states indicate a channel resource group for the ACK/NACK feedback available to the user terminal in the uplink control channel resource set, where each resource group includes multiple available channel resource numbers; another state is used to indicate the The user terminal does not use the channel resource group in the uplink control channel resource set for ACK/NACK feedback.

As shown in FIG. 6, the user terminal feeds back ACK/NACK information corresponding to the PDSCH on the downlink carriers 1, 2, 3, 4 and/or ACK/NAC information indicating the PDCCH released by the SPS resources on the uplink carrier 1. The base station allocates N>=1 uplink control channel resources or resource groups to the user terminal in a semi-static manner through RRC signaling. In this embodiment, N=7, indicating that there are 7 channel resources in the channel resource set allocated by the upper layer. Element or resource group. If " ^{lQg2 (N+1} ), bit signaling is newly set for the DCI format carried on all PDCCHs, then N=7, then 3 bits of signaling need to be newly set on the DCI format of all PDCCHs,

In the upstream carrier 1, the uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier 1 and the downlink carrier 2 is reserved, that is, the uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier is to be fed back. Therefore, the ACK/NACK feedback of the PDSCH on the downlink carrier 1 and the downlink carrier 2 is transmitted on the uplink control channel resources corresponding to the CCEs of the PDCCH on the two downlink carriers. The base station needs to use the PDCCH on the downlink carrier 1 and the downlink carrier 2 to inform the user terminal that the resources in the uplink control channel resource set allocated by the upper layer are not used as the feedback channel. For example, if all for

The DCI format on the PDCCH is newly set with " ^{lGg2 (N+1} ) l-bit signaling. When N=7, the identifier "000" can be used to inform the user terminal that the ACK/NACK feedback of the PDSCH on the downlink carrier is not The resources in the high-level allocated resource set are used as feedback channels for bearing feedback information. However, in the upstream carrier wave 1, the uplink control channel resources of the downlink carrier wave 3 and the downlink carrier wave 4 are not reserved, that is, there is no uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier wave to be fed back. Therefore, for the AC/NACK anti-debt transmission of the downlink carrier wave 3 and the downlink carrier wave 4, it is necessary to use the resource number or the resource group number in the uplink control channel resource set configured by the upper layer, and for the downlink carrier wave 3, the base station uses the downlink carrier wave 3 The PDCCH is used to inform the user terminal which element of the set is used in the ACK/NACK information of the PDSCH that the ^{carrier bears.} If the DCI format of all PDCCHs is newly set, " ^{lGg2 (N+1} )" is set. L-bit signaling, when N=7, the identifier "001" can be used to inform the user terminal that the ACK/NACK feedback of the PDSCH on the downlink carrier uses the first channel resource or resource group in the resource set allocated by the upper layer. Feedback channel for bearing feedback information.

As shown in FIG. 7, in the method provided by the embodiment of the present invention, the base station process is: Step 701. The uplink terminal control channel resource set is fixed to the user terminal by using the high layer RRC signaling, where N>=1 in the set. Element, corresponding to the channel resources or resource groups available for N ACK/NACK feedback. The elements in the set can be shared by multiple user terminals, and the base station limits the time-division feedback of the user terminals using the same channel resource by scheduling, thereby avoiding the channel resource collision problem.

The resource property in the uplink control channel resource set is semi-persistently scheduled, and the base station configures resources in the uplink control channel resource set by using high layer signaling.

Step 702: The base station determines, on the uplink carrier that performs ACK/NACK feedback, whether there is an uplink control channel resource to be fed back to the physical downlink control channel PDCCH on the downlink carrier, and determines that the flag is set in the PDCCH. The identifier is used to indicate whether the user terminal uses the channel resources in the uplink control channel resource set for ACK/NACK feedback, and the use of channel resource elements in the set.

Case 1: On the uplink carrier that performs ACK/NACK feedback, there is an uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier to be fed back, that is, the downlink to be fed back is reserved on the uplink carrier for performing ACK/NAC feedback. The uplink control channel resource corresponding to the CCE of the PDCCH on the carrier wave. The resource in the combination is used as a feedback channel. The method for signaling the PDCCH signaling may be to newly set " ^{tog2 N+1} ""1 bit signaling for the DCI format carried on all PDCCHs, or "bg ² (N+l) l-bit signaling is jointly encoded with other signaling in the existing DCI format of R _e i-8, and even the signaling in the existing DCI format is used to represent the N+1 states. If the ^lGgi(N+1 )"1-bit signaling is newly set for all DCI formats on the PDCCH, the " ^{1ί3⁄42(Ν+1} )1 bit can be set to all zeros, indicating that the upper layer allocation is not used. The elements in the collection of resources,

Case 2: On the uplink carrier that performs ACK/NACK feedback, there is no uplink control channel resource corresponding to the CCE of the PDCCH on the downlink carrier to be fed back, that is, there is no uplink control corresponding to the CCE of the PDCCH on the downlink carrier to be fed back. Channel resource. At this time, the base station selects one element in the set of uplink control channel resources allocated to the user as the feedback channel used for ACK NACK feedback, and indicates the resource element number to the user terminal by using signaling of the PDCCH. The method of notification may be to newly set " ^{lQg2 (N+} W-bit signaling) for all DCI formats on the PDCCH, or to " ^lG g ^{2 (N+1} ) l-bit signaling with Rel- 8 Other signaling joint coding in the existing DCI format, even reusing the signaling in the existing DCI format to represent the N+1 states. If the DCI format for all PDCCHs is newly set to " ^{tog2 (N +1} ) l-bit signaling, the base station uses the "l°g ² (+l) l bits to indicate the selected channel resource element number (number starting from 1) or the resource group number, for example, N=7 Use the identifier "001" to inform the user of the end The plant on the downlink wave

The ACK/NACK feedback of the PDSCH uses the first channel resource or the first resource group in the resource set allocated by the upper layer as a feedback channel for bearing feedback information.

As shown in FIG. 8, in the method provided by the embodiment of the present invention, the user terminal processes: Step 801: Read high-level configuration signaling, and obtain an uplink control channel resource set available for ACK/NACK feedback set in the base station;

Step 802: Detect a PDCCH to be fed back the downlink carrier, and determine whether to use an element in the uplink control channel resource set; for example: if the DCI format is newly set for all PDCCHs

" ^{lQg2 (N+1} ) l-bit signaling, when the user terminal detects that the identifier is "000" (that is, the all-zero bit state is detected), it means that it is not necessary to use the elements in the resource set allocated by the upper layer as the feedback channel. And if other bit states are detected, it means that the elements in the resource set allocated by the upper layer need to be used as Feedback channel. The user terminal determines the following two cases according to the detected PDCCH: Case 1: The elements in the uplink control channel resource set are not used. At this time, according to the indication of the CCE pre-agreed by the PDCCH on the downlink carrier to be fed back, the channel resource number or the resource group number used for the ACK/NACK feedback is captured;

Case 2: The elements in the uplink control channel resource set are used, and then the corresponding channel resource number or resource group number used for the ACK/NACK feedback is obtained according to the identifier set in the PDCCH (the number is in the range of the uplink control channel resource set) Inside);

Step 803: Receive PDSCH, and obtain ACK/NACK feedback information after decoding.

Step 804: Send the obtained ACK/NACK feedback information on the channel resource determined in step 802.

As shown in FIG. 9, the implementation of the present invention further provides a base station device, including:

The allocation module 901 is configured to allocate an uplink control channel resource set, where the resource set includes at least one or a group of channel resource numbers available for ACK/NACK feedback;

The allocation module 901 is further configured to configure, by using the high layer signaling, the resource in the uplink control channel resource set to be sent to the user terminal, and the resource property in the uplink control channel resource set is a semi-sustained resource.

The determining module 902 is configured to determine, on the uplink carrier that performs the ACK/NACK feedback, the source, and set an identifier in the PDCCH, where the identifier is used to indicate whether the user terminal uses the channel resource in the uplink control channel resource set. ACK/NACK feedback, and the use of channel resource elements in the channel resource set, that is, the corresponding channel resource number or resource group number used when performing ACK/NACK feedback using channel resources in the uplink control channel resource set.

In a specific embodiment, the determining module 902 determines that the uplink control channel resource corresponding to the PDCCH on the downlink carrier wave is to be fed back on the uplink carrier that performs the ACK/NACK feedback, and the user terminal is not set in the PDCCH. Corresponding identification of ACK/NACK feedback using channel resources in the uplink control channel resource set;

The determining module 02 does not exist if it is determined that the uplink wave of the ACK/NACK feedback is performed. The uplink control channel resource corresponding to the PDCCH on the downlink carrier is fed back, and an identifier of the usable resource with the identifier number or the resource group number is set in the PDCCH, and the identifier of the available resource indicates the source number or the resource group number.

If the allocation module 901 allocates N elements in the uplink control channel resource set, corresponding

N>=1;

The determining module 902 is further configured to set "1. ^ (Ν +1)] bit signaling for the DCI format carried on all PDCCHs, and the signaling _{Ν +1} states, there are two status indicators The uplink control source group number is used; the other state is used to indicate that the channel resources in the uplink control channel resource set that are not used by the user terminal perform ACK/NACK feedback.

In a specific embodiment, the determining module 902 can be used to jointly encode the " ¹ ° bit signaling with other signaling in the DCI format to implement an identifier for setting a usable resource in the physical downlink control channel PDCCH; or

Reusing the signaling in the DCI format to represent the N+1 states, and implementing an identifier for setting a usable resource in the physical downlink control channel PDCCH;

The N+1 states, where the N states indicate that one of the uplink control channel resource sets is used to indicate that the user terminal does not use channel resources in the uplink control channel resource set for ACK/NACK feedback.

As shown in FIG. 10, an embodiment of the present invention further provides a user terminal, including:

The reading module 1001 is configured to read the configuration signaling sent by the base station, and obtain the uplink control channel resource set information that is available for the ACK/NACK feedback provided by the user terminal set in the base station;

The channel resource determining module 1002 is configured to detect a PDCCH of the downlink packet to be reversed, according to the PDCCH

The identifier set in the PDCCH determines whether to use channel resources in the uplink control channel resource set Perform ACK/NACK feedback, and the channel resource number or resource group number used for ACK/NACK feedback.

In a specific embodiment, the channel resource determining module 1002, if it is determined that the uplink control channel resource corresponding to the PDCCH on the downlink carrier wave is to be fed back on the uplink carrier that performs the ACK/NACK feedback, according to the PDCCH in the PDCCH. The identifier of the resource may be used to determine that the corresponding channel resource in the uplink control channel resource set is used for ACK/NACK feedback, where the channel resource number or resource group number used in the resource set is used; The uplink control channel resource corresponding to the PDCCH on the carrier wave is used, and the to-be-feedback channel is used.

As shown in FIG. 11, the embodiment of the present invention further provides a system for configuring an uplink control ramp resource, including:

The base station 1101 is configured to determine, on the uplink carrier that performs the ACK/NACK feedback, whether the uplink control channel resource corresponding to the anti-debt physical downlink control channel PDCCH exists, and when it is determined that the uplink control channel resource does not exist, Setting an identifier of the available resource in the PDCCH to send to the user terminal;

The user terminal 1102 is configured to detect a PDCCH of the downlink carrier, and use the corresponding resource to perform ACK/NACK anti-hungry according to the identifier of the available resource in the PDCCH.

In a specific example, the base station 1101 allocates an uplink control channel resource set, where the resource set includes multiple channel resource numbers that are available for ACK/NACK feedback, and determines whether there is feedback to be sent on the uplink carrier that performs ACK/NACK feedback. The downlink control channel resource of the physical downlink control channel PDCCH is downlinked, and the identifier is set in the PDCCH according to the determination result; the user terminal 1102 is configured to read the configuration signaling sent by the base station 1101, and learn the uplink control channel resource set. Detecting, according to the identifier, determining whether to use channel resources in the uplink control channel resource set, and performing channel resources in using the uplink control channel resource set according to the identifier Channel resource element of the channel resource used for AC/NACK feedback.

In a specific embodiment, if the base station 1101 determines that the uplink control channel resource of the PDCCH on the downlink carrier is to be fed back on the uplink carrier that performs the AC/NACK feedback, the PDCCH is set to indicate that the user terminal does not use the uplink control. The channel resource in the channel resource set performs the corresponding identifier of the ACK/NACK feedback; the user terminal 1102 uses the downlink carrier to be fed back. In a specific embodiment, the base station 1101 determines the uplink carrier that performs ACK/NACK feedback. If there is no uplink control channel resource of the PDCCH to be fed back on the downlink carrier, the available resource that uses the channel resource number or the resource group number in the uplink control channel resource set when the user terminal performs ACK/NACK feedback is set in the PDCCH. The user terminal 1102 detects the PDCCH of the downlink carrier to be fed back, determines the ACK NACK feedback using the channel resource in the uplink control channel resource set according to the identifier of the available resource, and uses the available resource. Uplink control corresponding to the channel resource number or resource group number indicated by the identifier Channel resources are used as feedback channels for ACK/NACK feedback.

The method is a combination of dynamic indication and semi-static indication. In a preferred embodiment, the high layer semi-statically allocates a set of uplink control channel resources to the user terminal. When the ACK/NACK feedback is performed, when the user terminal needs multiple uplink control channel resources, if there is an ACK/NACK feedback uplink carrier, there is an uplink control channel resource corresponding to the CCE of the PDCCH to be fed back the downlink carrier. The element in the uplink control channel resource set allocated by the upper layer is not required to be used; if there is no uplink control channel resource corresponding to the CCE of the PDCCH on the downlink of the anti-debt downlink, the uplink control channel resource set allocated by using the layer is needed. One element of the feedback channel used as ACK/NACK feedback,

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 flows and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the general a processor of a computer, special purpose computer, embedded processor or other programmable data processing device to generate a machine that enables calculation The instructions executed by the processor of the machine or other programmable data processing device generate means for implementing the functions specified in one or more blocks of the flow or in a block or blocks of the flowchart.

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

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

Although the preferred embodiment of the present invention has been described, it will be apparent to those skilled in the art that, The preferred embodiments and all changes and modifications that fall within the scope of the invention.

It is apparent that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. As such, these modifications and variations of the present invention are within the scope of the appended claims and their equivalents. The invention is also intended to cover such modifications and variations.

Claims

Rights request

A method for configuring an uplink control channel resource, comprising:

Determining, by the base station, whether the user terminal feeds the uplink control channel resource corresponding to the physical downlink control channel PDCCH on the uplink wave of the ACK/NACK anti-debt;

If it is determined that the uplink control channel resource does not exist, the base station sends an identifier of the available resource to the user terminal in the PDCCH; the identifier of the available resource is used to indicate that the user terminal uses the corresponding source. Perform AC / NACK feedback,

1. The method of claim 1, wherein the identifier of the available resource is used for a source; the method further comprising:

3. The method according to claim 2, wherein the base station shares channel resources in the uplink control channel resource set for a plurality of user terminals, and limits each user terminal that uses the same channel resource by scheduling. Time-sharing feedback.

The method according to claim 2 or 3, wherein if the uplink control channel resource set includes N elements, N or N sets of available channel resources corresponding to the user terminal performing ACK/NACK feedback For the number, where N>=1, the identifier for setting the available resources in the physical downlink control channel PDCCH includes:

Set the downlink control information DCI format for the downlink scheduling PDCCH to "1 (3⁄4 ² (Ν + υ 1 bit signaling), among the _{Ν +1} states corresponding to the signaling, there are one state indicating The other source is used to indicate that the user terminal does not use the channel resources in the uplink control channel resource set for ACK/NACK feedback; or

Setting "log ₂ (N+1) l-bit signaling for the downlink control information DCI format carried on the PDCCH for downlink scheduling, among the _N+1 states corresponding to the signaling, there are N states indicating the upper A source group, each resource group includes a plurality of available channel resource numbers; and another state is used to indicate that the user terminal does not use the channel resource group in the uplink control channel resource set for ACK/NACK feedback.

5. The method according to claim 2 or 3, wherein if the set of uplink control channel resources includes N elements, N or N sets of available channels corresponding to the user terminal performing ACK/NACK feedback The resource number, where N>-1, the identifier of the available resource in the physical downlink control channel PDCCH includes:

Coding with "1. (Ν+1) 1-bit signaling and other signaling in the _Da format to implement an identifier for setting a usable resource in the physical downlink control channel PDCCH; or

Reusing the signaling in the DCI format to represent N+1 states, wherein, among the N+1 states, there are N states indicating that the user terminal performs ACK/NACK in the uplink control channel resource set. The available channel resource number or resource group number; another state is used to indicate the feed.

The method according to claim 2 or 3, wherein the channel resource property in the uplink control channel resource set is semi-statically configured, and the base station configures the uplink control channel resource set by using high layer signaling. Ramp resources in the

A method for configuring an uplink control channel resource, comprising:

The base station allocates an uplink control channel resource set, where the resource set includes a channel resource that the user terminal performs ACK/NACK feedback, and sends the uplink control channel resource set information to the user terminal by using signaling;

The base station determines whether the user terminal feedback the uplink control channel resource corresponding to the physical downlink control channel PDCCH on the uplink carrier that performs ACK/NACK feedback, and sets an identifier in the PDCCH according to the determination result, where the identifier is used for marking Whether the user terminal uses the channel resources in the uplink control channel resource set to perform ACK/NACK feedback, and uses the uplink control signal

8. The method according to claim 7, comprising: If the base station determines that the uplink control channel resource corresponding to the PDCCH is not present on the uplink carrier that performs ACK/NACK feedback, set the identifier in the PDCCH to the channel resource number included in the uplink control channel resource set or a resource group number, used to indicate the user terminal

The method according to claim 7 or 8, wherein if the uplink control channel resource set includes N elements, N or N sets of available channels corresponding to the user terminal performing ACK/ACK feedback The resource number, where N>=1, the identifier of the available resource in the physical downlink control channel PDCCH includes:

Setting the signaling of the ^lGg2 bit in the DCI format of the PDCCH for the downlink scheduling, in the N+1 states corresponding to the command, there are N states indicating that the uplink control channel resource set is used in the set. The channel resource number available for the ACK/NACK feedback by the user terminal; the channel resource corresponding to the other status number performs ACK NACK feedback;

Or, set "tog _z (N+W-bit signaling) for the downlink control information DCI format carried on the PDCCH for downlink scheduling, and N states of the _N+1 states corresponding to the signaling indicate In the upper source group, each resource group includes multiple available channel resource numbers; and another state is used to indicate that the user terminal does not use the channel resource group in the uplink control channel resource set for ACK/NACK feedback.

The method according to claim 7 or 8, wherein if the N elements in the uplink control channel resource set are included, N or N groups corresponding to the user terminal performing ACK/NACK feedback are available. The channel resource number, where N>=1, the identifier of the available resource in the physical downlink control channel PDCCH includes:

^Coding the " ^{lGg2 (N+1} ) l-bit signaling with other signaling in the DCI format to implement the identifier of the available resource in the physical downlink control channel PDCCH; or

Reusing the signaling in the DCI format to represent N+1 states, where the N+1 states have N The status indicates a channel resource number or a resource group number for the ACK/NACK feedback available to the user terminal in the uplink control channel resource set; and another status is used to indicate the user terminal

The method according to claim 7 or 8, wherein the channel resource shield in the set of uplink control channel resources is semi-statically configured, and the base station configures the uplink control channel by using layer-by-layer signaling Channel resources in the resource set,

A method for configuring an uplink control channel resource, comprising:

The user terminal detects a PDCCH to be fed back to the downlink carrier, determines whether to use the channel resource in the uplink control channel resource set to perform ACK/NACK feedback, and uses the uplink control channel resource set according to the identifier set in the PDCCH. The corresponding channel resource used when the channel resource in the ACK/NACK feedback is performed,

13. The method of claim 12, comprising:

The user terminal detects the PDCCH of the downlink carrier to be fed back, and if there is no uplink control channel resource corresponding to the PDCCH on the downlink carrier to be fed back on the uplink ACK/NACK feedback, the available resource according to the PDCCH And determining, by using the channel resource in the uplink control channel resource set, the ACK/NACK feedback, where the identifier of the available resource indicates the user number or the resource group number,

A base station device, comprising:

And an allocation module, configured to allocate an uplink control channel resource set to the user terminal in advance, and send the uplink control channel resource set information to the user terminal by using signaling, where the uplink control channel resource set includes at least one or one group of ACK/ NACK feedback available channel resource number;

a determining module, configured to determine, on an uplink carrier that performs ACK/NACK feedback, whether there is an uplink control channel resource corresponding to the PDCCH corresponding to the physical downlink control channel, and set an identifier in the PDCCH according to the determination result, where the identifier is used by the identifier Indicating whether the user terminal uses the above The channel resources in the row control channel resource set perform ACK/NACK feedback, and the upper resource number or resource group number is used.

The base station according to claim 14, wherein the determining module is further configured to: if it is determined that the uplink carrier of the ACK/NACK feedback is performed, there is no uplink control channel corresponding to the PDCCH on the downlink carrier to be fed back And the resource identifier is set in the PDCCH as the channel resource number or the resource group number in the uplink control channel resource set, and is used to indicate that the user terminal uses the channel resource corresponding to the channel resource number or the resource group number to perform ACK/ NACK feedback.

The base station according to claim 14 or 15, wherein if the allocation module allocates N elements in the uplink control channel resource set, corresponding to N user terminals for ACK/NACK asymmetry is available. Channel resource number or resource group number, where N>=1;

The determining module is further configured to set “1. (Ν+1) 1-bit signaling for the DCI format carried on the PDCCH for downlink scheduling, where there are one _Ν+ ι states corresponding to the command The status indicates the source number or the resource group number; and the other status is used to indicate that the channel resources in the uplink control channel resource set not used by the user terminal perform ACK/NACK feedback.

The base station according to claim 14 or 15, wherein if the allocation module allocates N elements in the set of uplink control channel resources, ACK/NACK feedback is available for corresponding N user terminals. Channel resource number or resource group number, where N>=1;

The determining module is further configured to jointly encode the ^leg2 bit signaling with other signaling in the DCI format to implement an identifier for setting a usable resource in the physical downlink control channel PDCCH; or reuse the signaling representation in the DCI format. +1 state, among the N+1 states, there are N-shaped channel resource numbers or resource group numbers; another state is used to indicate that the user terminal does not use channel resources in the uplink control channel resource set for ACK /NACK feedback.

18. A user terminal, comprising:

a reading module, configured to read a configuration command issued by the base station, and obtain the user end in the base station Performing uplink control channel resource set information available for ACK/NACK feedback;

a channel resource determining module, configured to detect a PDCCH of a downlink carrier to be fed back, according to the PDCCH

ACK/NACK feedback, and a corresponding channel resource number or resource group number used when ACK/NACK feedback is performed using channel resources in the uplink control channel resource set.

19. The user terminal of claim 18, comprising:

The channel resource determining module is further configured to: if it is determined that the uplink control channel resource corresponding to the PDCCH on the downlink carrier wave is to be fed back on the uplink carrier that performs ACK/NACK feedback, according to the available resources in the PDCCH Identifying, using the channel resource in the uplink control channel resource set to perform ACK/NACK feedback, where the identifier of the available resource indicates that the user terminal enters

20. A system for configuring an uplink control channel resource, comprising:

a base station, configured to determine, on an uplink carrier that performs ACK/NACK performance, whether the uplink control channel resource corresponding to the physical downlink control channel PDCCH is present, and when determining that the uplink control channel resource does not exist, Setting, in the PDCCH, an identifier of the available resource to be sent to the user terminal;

2. The system of claim 20, comprising:

The base station is further configured to allocate an uplink control channel resource set to the user terminal in advance, and send the uplink control channel resource set information to the user terminal by using signaling;

When it is determined that the uplink control channel resource corresponding to the PDCCH on the downlink carrier is not to be fed back, the PDCCH is set to indicate that the user terminal performs ACK/NACK feedback on the PDCCH.

The ID of the group-numberable resource that can be used;

The user terminal is further configured to detect a PDCCH of the downlink carrier to be fed back, according to the available resource. Identification, indeed

The system of claim 21, wherein the base station is further configured to: on an uplink carrier that is determined to perform ACK/NACK feedback, there is an uplink control channel resource corresponding to the PDCCH on the downlink carrier to be fed back And setting, in the PDCCH, the required identifier that is set in the PDCCH that is not used by the user terminal to detect the downlink downlink wave to be sent out by the user terminal, according to the control channel number or the resource group number occupied by the PDCCH. The channel resources used for ACK NACK feedback are calculated.