WO2013139271A1 - Control signaling transmission and reception method, enb and user equipment - Google Patents

Abstract

Provided are a control signaling transmission and reception method, eNB and user equipment (UE), the method comprising: allocating an E-PHICH resource, the E-PHICH resource being allocated in at least a part of resources occupied by the search space of an enhanced physical downlink control channel (E-PDCCH); determining the occupied part in the E-PHICH resource by the E-PHICH corresponding to the UE; mapping the E-PHICH information corresponding to the UE into the corresponding occupied part in the E-PHICH resource, and transmitting the E-PHICH information to the UE. An embodiment of the present invention optimizes the transmission solution of the E-PHICH.

Description

 Control signaling transmission and reception method, base station and user equipment

 This application claims the priority of the Chinese Patent Application filed on March 20, 2012 by the Chinese Patent Office, Application No. CN 201210074786.2, entitled "Transmission and Reception of Control Signaling, Base Station and User Equipment", the entire contents of which are hereby incorporated by reference. This is incorporated herein by reference. TECHNICAL FIELD The present invention relates to mobile communication technologies, and in particular, to a method for transmitting and receiving control signaling, a base station, and a user equipment. BACKGROUND OF THE INVENTION Long Term Evolution (LTE) or further enhancement of the Long Term Evolution (Long Term)

In the Evolution Advanced (LTE-A) system, after the evolved NodeB (eNB) receives the uplink data packet sent by the user equipment (User Equipment, UE), it needs to retransmit the request indication channel through the physical hybrid field (Physical HARQ Indicator Channel). , PHICH) sends an Acknowledgement (ACK) or Non-Acknowledgement (NACK) message to the UE. In the prior art, the PHICH is configured in a Physical Downlink Control Channel (PDCCH) region, the PDCCH region occupies the first n symbols of one subframe, n is a natural number from 1 to 4, and the PHICH is in the frequency domain mapping range. Try to break up the entire system bandwidth to get the frequency diversity gain.

 However, with the introduction of the new carrier type, the control region may not be configured in the new carrier scenario. The principle of configuring the control region according to the existing PHICH will make the PHICH unable to be configured. In order to solve this problem, it is necessary to optimize the PHICH or introduce a new design. Summary of the invention

 The embodiments of the present invention provide a method for transmitting and receiving control signaling, a base station, and a user equipment, to optimize PHICH processing.

 The embodiment of the invention provides a method for sending control signaling, including:

 Configuring an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, where the E-PHICH resource is configured to be at least part of resources occupied by a search space of an enhanced physical downlink control channel E-PDCCH;

Determining, in the E-PHICH resource, the occupied part of the E-PHICH corresponding to the UE, mapping the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, And sent to the UE.

 An embodiment of the present invention provides a method for receiving control signaling, including:

 Obtaining an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, where the E-PHICH resource is configured to be at least part of resources occupied by a search space of the enhanced physical downlink control channel E-PDCCH;

 Determining, by the user equipment, the E-PHICH corresponding to the E-PHICH resource, the corresponding part of the E-PHICH resource, and receiving the information of the E-PHICH corresponding to the UE. An embodiment of the present invention provides a base station, including:

 a processing module, configured to configure an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the user equipment UE in the E-PHICH resource, where the E-PHICH resource is configured in The at least part of the resources occupied by the search space of the physical downlink control channel E-PDCCH is enhanced; the sending module is configured to map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and Sent to the UE.

 An embodiment of the present invention provides a user equipment UE, including:

 a processing module, configured to acquire an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource, where the E-PHICH resource is configured in an enhanced physics At least part of the resources occupied by the search space of the downlink control channel E-PDCCH;

 And a receiving module, configured to receive information about the E-PHICH corresponding to the UE in a corresponding occupied part of the E-PHICH resource.

 According to the foregoing technical solution, in the embodiment of the present invention, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the configuration of the E-PHICH resource in the control area may be avoided in the prior art. Configuration issues to achieve PHICH optimization. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic flowchart diagram of an embodiment of a method for transmitting control signaling according to the present invention;

 2 is a schematic flowchart of another embodiment of a method for transmitting control signaling according to the present invention;

 3 is a schematic diagram of an embodiment of E-PHICH resource configuration in the present invention;

 4 is a schematic diagram of another embodiment of E-PHICH resource configuration in the present invention;

 FIG. 5 is a schematic diagram of another embodiment of an E-PHICH resource configuration according to the present invention; FIG.

 6 is a schematic flowchart of another embodiment of a method for transmitting control signaling according to the present invention;

FIG. 7 is a schematic diagram of another embodiment of an E-PHICH resource configuration according to the present invention; FIG. 8 is a schematic flowchart of another embodiment of a method for transmitting control signaling according to the present invention;

 FIG. 9 is a schematic flowchart diagram of another embodiment of a method for transmitting control signaling according to the present invention

 FIG. 10 is a schematic flowchart diagram of an embodiment of a method for receiving control signaling according to the present invention;

 FIG. 11 is a schematic flowchart diagram of another embodiment of a method for receiving control signaling according to the present invention;

 12 is a schematic structural diagram of an embodiment of a base station according to the present invention;

 FIG. 13 is a schematic structural diagram of an embodiment of a user equipment according to the present invention.

1 is a schematic flowchart of an embodiment of a method for transmitting control signaling according to the present invention, which includes:

 Step 11: The eNB configures an enhanced PHICH (E-PHICH) resource, where the E-PWCH resource is configured in at least part of resources occupied by a search space of an enhanced physical downlink control channel (E-PDCCH);

 At least one E-PHICH group information may be mapped on the E-PHICH resource, and each E-PHICH group includes at least one E-PHICH, or information of at least one E-PHICH may be mapped on the E-PHICH resource; In the embodiment of the present invention, the existing PHICH is optimized, and the optimized PHICH is called E-PHICH, and the physical effects of the E-PHICH and the PHICH are the same, for example, both are used for transmitting ACK/NACK information, etc.; E-PHICH and PHICH will adopt different resources and mapping methods. The E-PHICH may be transmitted in units of groups. For example, each PHICH group in the prior art includes 8 PHICHs. Similarly, each E-PHICH group in this embodiment may also include 8 E-PHICHs.

 Each E-PHICH group may include one UE's E-PHICH, or an E-PHICH including multiple UEs, and each UE may correspond to one or more E-PHICHs.

 Optionally, the E-PHICH may also be sent in units of channels, and at least one E-PHICH may be mapped on the E-PHICH resource. The E-PHICH group will be taken as an example in the embodiment of the present invention.

 The search space of the E-PDCCH is divided in a manner including a common search space of the E-PDCCH and a specific search space of the UE. The common search space of the E-PDCCH is visible to all UEs to simultaneously transmit E-PHICHs of multiple UEs; and the E-PHICH transmitted by the common search space of the E-PDCCH may not adopt UE-specific precoding, ie, Channel-based transmission is used, and non-channel-based transmission is used, such as transmit diversity and random beamforming.

In addition, the search space of the E-PDCCH can also be divided in another manner, including a centralized E-PDCCH. Search space and search space of distributed E-PDCCH; optionally, whether it is a centralized E-PDCCH search space or a distributed E-PDCCH search space, it can be further divided into E-PDCCH common search space and The specific search space of the UE.

 Furthermore, the search space of the E-PDCCH may also include a search space of at least one aggregation level E-PDCCH.

 Therefore, in the embodiment of the present invention, if not specifically stated, the search space of the E-PDCCH is generally referred to, including a common search space of the E-PDCCH and a specific search space of the UE, or a search space including a centralized E-PDCCH. And a search space of the distributed E-PDCCH, or a search space including E-PDCCHs of different aggregation levels. The common search space of the E-PDCCH is specifically referred to as an E-PDCCH search space juxtaposed with a specific search space of the UE.

 Optionally, for the general search space of the E-PDCCH:

 The E-PHICH resource may be configured in a time-frequency resource of at least one resource block (RB) or RB pair occupied by the search space of the E-PDCCH; or

 The E-PHICH resource may be configured in a time-frequency resource where at least one of the at least one RB or RB pair occupied by the search space of the E-PDCCH is located; or

 The E-PHICH resource may be configured in a RB or an RB pair where the search space of the E-PDCCH is located, and is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH. Subsequent to the embodiment shown in FIG.

 Optionally, for the common search space of the E-PDCCH, it may be:

 The E-PHICH resource may be configured in a time-frequency resource where the common search space of the E-PDCCH is located; or, if the symbol occupied by the common search space of the E-PDCCH starts from the n+1th symbol, the E-PHICH resource is configured. In the time-frequency resource corresponding to the first n symbols of the resource block RB or the RB pair occupied by the common search space of the E-PDCCH (refer to the following embodiment shown in FIG. 6 for details).

Step 12: The eNB determines an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource. The eNB may determine, according to the specific information of the UE, the E-PHICH group where the UE is located and the corresponding corresponding in the E-PHICH group. E-PHICH; when configuring E-PHICH resources, it indicates the resources occupied by each channel in each E-PHICH group. Therefore, after determining the E-PHCIH group where the UE is located and its corresponding E-PHICH Then, the occupied part of the E-PHCIH corresponding to the UE in the E-PHICH resource can be determined. Optionally, if the E-PHICH group is not divided, the eNB may determine the E-PHICH corresponding to the UE according to the specific information of the UE, and determine, according to resources occupied by each E-PHICH, the UE corresponding to the resource configuration. E-PHICH at Occupied part of the E-PHICH resource. The above-described specific information of the UE specific information may authorize the UL_ _gra nt uplink scheduling uplink data scheduling information of the UE and / or scheduling uplink data, for example, a shift demodulation reference signal and the like. For example, the E-PHICH resource may be an E-PHICH resource of all UEs in the cell, and e B may first determine all E-PHICH groups or E-PHICH channels included in the E-PHICH resource, and then according to some Specific information of the UE, such as uplink data scheduling information and/or specific information in an uplink scheduling grant UL_grant for scheduling uplink data (eg, shifting of a demodulation reference signal, etc.) to determine the UE in all E-PHICH groups The group in which the E-PHICH is located, or the E-PHICH channel used by the UE is determined in all E-PHICH channels. Alternatively, the foregoing E-PHICH resource is an E-PHICH resource configured by the eNB to a certain UE. For example, if the eNB is configured to the UE by using RRC signaling, the eNB may determine the current E-PHICH resource of the UE. E-PHICH channel used by the UE. For example, the eNB allocates eight E-PHICH channels to the E-PHICH resource of the UE through RRC signaling, and the eight E-PHICH channels may belong to one E-PHICH group or multiple E-PHICH groups or are independent. The channel is not divided into groups. During each uplink scheduling, the eNB dynamically selects an E-PHICH channel as the E-PHICH channel used by the current UE in the eight E-PHICH channels, and the dynamic selection signaling may be carried in the uplink. scheduling data in UL_ _gra nt.

 Step 13: The eNB maps the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and sends the information to the UE.

 Optionally, when mapping the information of the E-PHICH, different mapping manners may be used for different E-PHICH information, and the specific mapping content may be referred to the following embodiment.

 In this embodiment, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the problem that the E-PHICH resource may be configured in the control area may not be configured in the prior art may be avoided; The E-PDCCH is usually located in the data area, and the E-PHICH is configured on the resource where the E-PDCCH is located, thereby avoiding multi-user multi-input multi-output (MIMO) and coordinated multi-point transmission (Coordinated). The introduction of technologies such as Multiple Points Transmission (CoMP) (especially CoMP scenarios sharing the same cell identity) leads to an increase in PHICH resource collision, that is, a problem of insufficient PHICH capacity.

 2 is a schematic flowchart of another embodiment of a method for transmitting control signaling according to the present invention, including:

 Step 21: Configure an E-PHICH resource, where the E-PHICH resource is located in at least one resource block (RB) or RB pair, or is located in a time-frequency resource where at least one symbol of at least one RB or RB pair is located.

Referring to FIG. 3, FIG. 3 shows three RB pairs, which occupy 7 symbols in an RB time domain, that is, a half subframe, also called a time slot, occupying 12 subcarriers in the frequency domain; 14 symbols, one child Two slots of a frame occupying 12 subcarriers in the frequency domain.

 The padding part in FIG. 3 represents an E-PHICH group. It can be seen that, in this embodiment, the E-PHICH resource is configured on multiple RBs, and then the E-PHICH group is distributed on multiple RBs after being configured. That is, the E-PHICH resource is located on multiple RBs, so that the frequency diversity gain can be obtained.

 Optionally, the E-PHICH resource may be configured in a second time slot of the RB or RB pair.

 Step 22: Determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource.

 Step 23: Map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and send the information to the UE.

 For details on steps 22~23, see steps 11~12.

 Wherein, when the E-PHICH resource is configured in the second time slot, the cell-specific reference signal (CRS) including the occupied resource in the second time slot, and the demodulation reference signal (Demodulation Reference) Signal, DMRS) and Channel State Information Reference Signal (CSI-RS). The CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS. In order to properly occupy resources, Different E-PHICH groups use different mapping methods.

 For example, referring to Figure 4, the resources already occupied by CRS, DMRS, and CSI-RS can be as shown in Figure 4.

E-PHICH needs to use resources other than those already occupied. For more reasonable application resources, as shown in Figure 4, the mapping method used by the first E-PHICH group and the second E-PHICH group is different. Specifically, one occupies 4 consecutive Resource Elements (REs), and the other occupies 2 consecutive symbols and 2 consecutive subcarriers.

 For another example, as shown in FIG. 5, the E-PHICH group on the symbol where the CRS is located is different from the E-PHICH group on the symbol where the DMRS is located.

 It can be understood that FIG. 4 and FIG. 5 are only examples. Each E-PHICH group can also adopt other mapping modes. Different mapping modes can be used to ensure that the remaining resources can be effectively occupied by different E-PHICH groups. The specific E-PHICH group may adopt different mapping manners. For example, the E-PHICH group on the symbol where the zero-power CSI-RS is located may adopt the mapping manner of the second E-PHICH group in FIG. 4, An E-PHICH group may also be mapped in the adjacent left-side resources of the non-zero-power CSI-RS on the right side of 5.

 In this embodiment, the frequency diversity gain can be obtained by configuring the E-PHICH resource on multiple RB pairs or RBs. This embodiment uses different mapping modes for the E-PHICH group, which can reasonably utilize time-frequency resources and improve resource utilization. .

FIG. 6 is a schematic flowchart of another embodiment of a method for sending control signaling according to the present invention, including: Step 61: Configure an E-PHICH resource, where the E-PHICH resource is located in an area where the preceding symbol of the RB or RB pair occupied by the common search space of the E-PDCCH is located;

 The previous embodiment is to configure the E-PHICH resource in the common search space. However, since different UEs have different channel conditions, the UE with good channel conditions can configure its E-PHICH resources in the public. Inside the symbol in front of the search space.

 That is, if the symbol occupied by the common search space of the E-PDCCH starts from the n+1th symbol, the shell lj configures the E-PHICH resource when the first n symbols of the RB or RB pair where the common search space is located corresponds. Within the frequency resource.

 For example, referring to FIG. 7, the first search space is a dedicated search space of a UE (first UE) with poor channel conditions, and the second search space is a dedicated search space of a UE (second UE) with better channel conditions. Since the common search space needs to take into account the needs of UEs with poor channel conditions, the common search space should be the same as the start symbol of the first search space. Assuming that the starting symbol of the first search space is the fourth symbol, then the starting symbol of the common search space is also the fourth symbol. The starting symbol of the second search space is the first symbol, and the common search space starts from the fourth symbol. For the second search space, the first three symbols are idle. To avoid waste of resources, The E-PHICH of the second UE is transmitted on resources corresponding to the first three symbols of the RB or RB pair in which the common search space is located.

Step 62 _: Determine the occupied portion of the E-PHICH corresponding to the UE in the E-PHICH resource. Step 63: Map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource. And sent to the UE.

 For details of steps 62 to 63, refer to step 12 13 .

 In this embodiment, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the problem that the E-PHICH resource may be configured in the control area may not be configured in the prior art may be avoided; The E-PDCCH is usually located in the data area, and then the E-PHICH is configured on the resource where the E-PDCCH is located, which can avoid the introduction of technologies such as multi-user MIMO and CoMP (especially CoMP scenarios sharing the same cell identity). The resource collision is increased, that is, the PHICH capacity is insufficient; in addition, since the symbol in front of the common search space of the E-PDCCH is usually idle, the present embodiment utilizes the resource in which the idle symbol is located, by utilizing the idle resource. Can avoid waste of resources.

 FIG. 8 is a schematic flowchart of another embodiment of a method for sending control signaling according to the present invention, including:

 Step 81: Configure the E-PHICH resource.

Step 82 _: Determine the occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource. For details of the step 81 82, refer to the related description in the foregoing embodiments. For example, E-PHICH resources The E-PHICH resource may be configured on at least one RB or RB pair, or at least one symbol of at least one RB or RB pair is located in the at least one resource of the E-PDCCH search space. On the time-frequency resources. Even the specific content of the steps 81-82 can be implemented by using the prior art. For example, the E-PHICH resource is configured on the time-frequency resource where the control area is located. The specific content of the occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource is determined in step 12.

 Step 83: The E-PHICH information corresponding to the UE and/or the DMRS used to demodulate the E-PHICH are scrambled by using a specific identifier, and the scrambled or unscrambled E-PHICH information is used. Mapping to a corresponding occupied portion of the E-PHICH resource, and transmitting the scrambled E-PHICH information and/or DMRS to the UE.

 The specific identifier is a preset identifier for randomizing interference, and the specific identifier may be specifically

UE identity (UE_ID), cell identity (cell_ID), transmission point identity, and the like.

 Step 84: The eNB sends the specific identifier to the UE, so that the UE performs descrambling by using the specific identifier. For example, the specific identifier may be sent to the UE through broadcast signaling, Radio Resource Control (RRC) dedicated signaling, or the like.

 Different from the above embodiment, this embodiment performs scrambling with a specific identifier, which can be pre-configured. For example, in a specific heterogeneous network, a macro cell includes multiple micro cells, and these cells share the same cell identity. If the E-PHICH of each cell is scrambled with the same cell identifier, and the E-PHICH resources of each cell overlap, a strong inter-cell or E-PHICH interference between the transmission points is brought. Therefore, E-PHICH interference can be randomized by arranging a cell-specific identity for each cell (or called a transmitting point) to scramble the E-PHICH.

 In this embodiment, by configuring a specific identifier for the UE, the E-PHICH interference can be randomized to reduce inter-cell interference, and the introduction of technologies such as multi-user MIMO and CoMP (especially CoMP scenarios sharing the same cell identifier) can also avoid PHICH resources. The problem of increased collisions, on the other hand, increases the PHICH capacity.

 FIG. 9 is a schematic flowchart of another embodiment of a method for sending control signaling according to the present invention, including:

 Step 91: Configure an E-PHICH resource, where the E-PHICH resource is located in an RB or an RB pair where the search space of the E-PDCCH is located, and is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH; The search space of the E-PDCCH includes a search space of at least one aggregation level E-PDCCH.

The search space of the E-PDCCH includes a common search space or a specific search space of the UE. The search space of the E-PDCCH includes a search space of a centralized E-PDCCH or a search space of a distributed E-PDCCH. The centralized E-PDCCH is an E-PDCCH that occupies consecutive Enhanced Control Channel Element (E-CCE). For example, if an RB pair contains four E-CCEs, the aggregation level is 4. The E-PDCCH can occupy 4 E-CCEs of the RB pair; the distributed E-PDCCH means that one E-PDCCH occupies a non-contiguous E-CCE, and the E-CCE can be distributed to multiple RBs or RB pairs. For example, a distributed E-PDCCH with an aggregation level of 4 may occupy one E-CCE on each of the four consecutive RB pairs; in particular, for example, one E-CCE E-PDCCH may also be in two non-contiguous Each RB pair occupies half of the E-CCE.

 The following describes an example of a search space of a distributed E-PDCCH with an aggregation level of 2, which is similar to the case of a common search space and a centralized E-PDCCH search space, and/or other aggregation level E-PDCCH.

 For a distributed E-PDCCH with an aggregation level of 2, it is assumed that there are 6 candidate E-PDCCHs, and each candidate

The E-PDCCH occupies one E-CCE on each of the two RB pairs, and the two RB pairs are preferably non-contiguous to obtain a frequency diversity gain. An example of one mapping is that the candidate E-PDCCH 1 occupies the E-CCE 1 of the RB pair i and the E-CCE 1 of the RB pair j; the candidate E-PDCCH 2 occupies the E-CCE 2 of the RB pair i and the E- of the RB pair j CCE 2; candidate E-PDCCH 3 occupies E-CCE 3 of RB pair i and E-CCE 3 of RB pair j; candidate E-PDCCH 4 occupies E-CCE 4 of RB pair i and E-CCE 4 of RB pair j The candidate E-PDCCH 5 occupies the E-CCE 1 of the RB pair i+1 and the E-CCE 1 of the j+1 of the j+1; the candidate E-PDCCH 6 occupies the E-CCE 2 and the RB pair j of the RB pair i+1 +1 E-CCE 2; where i and j are assumed to be discontinuous in the frequency domain, and there are 4 E-CCEs on each RB pair. Based on the mapping manner of candidate E-PDCCHs in the above search space, E-CCE 3 and E-CCE 4 on RB pair i+1, and E-CCE 3 and E-CCE 4 on RB pair j+1 are both If the candidate E-PDCCH is not mapped, if the multiple UEs share the resources of the distributed mapping, the multiple UEs will not map the candidate E-PDCCH on the idle E-CCE, so in order to improve resource utilization. Rate, E-PHICH resources can be configured on the above idle E-CCE, S卩RB pair E-CCE 3 and E-CCE 4 on i+1, and E-CCE 3 on RB pair j+1 Wokou E-CCE 4. Other mapping methods are not limited.

 Step 92: Determine the occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource; Step 93: Map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, And sent to the UE.

 For details of steps 92 to 93 of this embodiment, refer to steps 12 to 13.

In this embodiment, the E-PHICH resource is configured in at least part of the resources occupied by the search space of the E-PDCCH, which may avoid the problem that the E-PHICH resource may not be configured in the control area in the prior art; Since the E-PDCCH is usually located in the data area, the E-PHICH is configured at the E-PDCCH. On the other hand, the introduction of technologies such as multi-user MIMO and CoMP (especially the CoMP scenario sharing the same cell identity) can lead to an increase in PHICH resource collision, that is, the PHICH capacity is insufficient; the E-PHICH resource is configured in E- The resource block RB or RB pair in which the search space of the PDCCH is located is not on some resources occupied by the candidate E-PDCCH in the search space, and the resource utilization rate can be improved.

 In addition, the present invention may also provide an embodiment of a method for transmitting control signaling, including:

 First, e B configures E-PHICH resources;

 For example, the E-PHICH resource may be configured on at least part of the resource where the search space of the E-PDCCH is located; or the E-PHICH resource may be configured on at least one RB or RB pair, or configured in at least one RB or RB pair. The at least one symbol is located on the time-frequency resource; or the E-PHICH resource is configured on the time-frequency resource where the control region is located. The eNB determines the occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource. For details of the step, refer to step 12.

 The eNB maps the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource in different mapping manners, and sends the information to the UE.

 Different mapping methods can include:

 Manner 1: When the information of the E-PHICH corresponding to the UE includes at least two types, the information of the different E-PHICHs is mapped to the corresponding occupied part of the E-PHICH resources by using different mapping modes. The method may include: mapping information of the E-PHICH mapped to the time-frequency resource where the first symbol is located, and mapping information of the E-PHICH mapped to the time-frequency resource where the second symbol is located, where the information is different. The first symbol and the second symbol are symbols in which any two different items in the following items are located: CRS, DMRS, CSI-RS o or, mode 2: when the information of the E-PHICH is mapped to the first symbol The time-frequency resource is mapped to the corresponding occupied portion of the E-PHICH resource by using a first mapping manner, and the second mapping is used when the information of the E-PHICH is mapped to the time-frequency resource where the second symbol is located. The mode is mapped to the corresponding occupied part of the E-PHICH resource, where the first mapping mode is different from the second mapping mode, where the first symbol and the second symbol are any two different items in the following items: Symbols: CRS, DMRS, CSI-RS o

 Optionally, the eNB may further further information about the E-PHICH and/or when adopting different mapping modes.

The DMRS is scrambled and transmitted to the UE. For the specific manner of scrambling, reference may be made to the embodiment shown in FIG.

 FIG. 10 is a schematic flowchart of a method for receiving control signaling according to an embodiment of the present invention, including:

 Step 101: The UE acquires an E-PHICH resource.

For example, the UE may obtain the foregoing E-PHICH resource by using the broadcast signaling sent by the eNB, or the RRC dedicated signaling, or may also be obtained by using an implicit manner, for example, the E-PHICH is in a certain E-PDCCH search space. A location that can be fixed or changed with the search space described above.

 Obtaining an E-PHICH resource may be configured in at least part of resources occupied by the search space of the E-PDCCH, for example,

 Acquiring an E-PHICH resource in a time-frequency resource of at least one resource block RB or RB pair occupied by the search space of the E-PDCCH; or

 Obtaining an E-PHICH resource in a time-frequency resource in which at least part of the at least one RB or RB pair occupied by the search space of the E-PDCCH is located; or

 Acquiring an E-PHICH resource in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 The E-PHICH resource is acquired in a time-frequency resource corresponding to the first n symbols of the RB or the RB pair occupied by the common search space of the E-PDCCH, and the symbol occupied by the common search space of the E-PDCCH is from the n+1th Start with a symbol; or,

 The E-PHICH resource is obtained from a part of resources of the RB or RB pair in which the search space of the E-PDCCH is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH.

 Alternatively, the E-PHICH resource may be configured in a time-frequency resource of at least one RB or RB pair; or configured in a time-frequency resource in which at least one of the at least one RB or RB pair is located. The RB or RB pair is not limited to the RB or RB pair in which the search space of the E-PDCCH is located.

 The location of the E-PHICH resource can be specifically referred to the above embodiments.

 Step 102: The UE determines an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource. The UE may determine, according to the specific information of the UE, the specific correspondence between the E-PHICH group in which the UE is located and the E-PHICH group. E-PHICH; when configuring E-PHICH resources, it indicates the resources occupied by each channel in each E-PHICH group. Therefore, after determining the E-PHCIH group where the UE is located and its corresponding E-PHICH Then, the occupied part of the E-PHCIH corresponding to the UE in the E-PHICH resource can be determined. Optionally, if the E-PHICH group is not divided, the e B may determine the E-PHICH corresponding to the UE according to the specific information of the UE, and determine the UE corresponding according to the resources occupied by each E-PHICH according to the resource configuration. The E-PHICH is part of the E-PHICH resource. The specific information of the UE may be uplink scheduling information of the UE and

/ Uplink scheduling or uplink scheduling information of specific authorization data UL_ _gra nt in, for example, a shift demodulation reference signal and the like. For example, the E-PHICH resource may be an E-PHICH resource of all UEs in the cell, and the UE may first determine all E-PHICH groups or E-PHICH channels included in the E-PHICH resource, and then according to the UE. Specific information, such as uplink data scheduling information and/or specific information in an uplink scheduling grant UL_grant that schedules uplink data (eg, shifting of a demodulation reference signal, etc.) to determine the UE in all E-PHICH groups The group in which the E-PHICH is located, or the E-PHICH channel used by the UE is determined in all E-PHICH channels. Or, the E-PHICH resource itself is an E-PHICH resource that is configured by the eB to the UE. For example, the UE obtains the radio resource control RRC signaling sent by the eNB, and the UE may be in the E-PHICH resource of the UE. The E-PHICH channel currently used by the UE is determined. For example, the eNB allocates eight E-PHICH channels to the E-PHICH resource of the UE through RRC signaling, and the eight E-PHICH channels may belong to one E-PHICH group or multiple E-PHICH groups, each time. In the uplink scheduling, the eNB dynamically selects an E-PHICH channel as the E-PHICH channel used by the current UE in the eight E-PHICH channels, and the dynamic selection signaling may be carried in the UL_grant for uplink data scheduling, and the UE The currently used E-PHICH channel can be obtained by signaling in the UL_grant, such as information such as shifting of the demodulation reference signal.

 Step 103: The UE receives the information of the E-PHICH corresponding to the UE in the corresponding occupied part of the E-PHICH resource.

 In this embodiment, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the problem that the E-PHICH resource may be configured in the control area may not be configured in the prior art may be avoided; The E-PDCCH is usually located in the data area, and then the E-PHICH is configured on the resource where the E-PDCCH is located, which can avoid the introduction of technologies such as multi-user MIMO and CoMP (especially CoMP scenarios sharing the same cell identity). The resource collision is increased, that is, the PHICH capacity is insufficient.

 FIG. 11 is a schematic flowchart of another embodiment of a method for receiving control signaling according to the present invention, including:

 Step 111: The UE acquires an E-PHICH resource.

 The E-PHICH resource may be configured on at least part of the resource where the search space of the E-PDCCH is located; or the E-PHICH resource may be configured in at least one RB or RB pair, or at least one symbol of at least one RB or RB pair On the resource; or, the E-PHICH resource can be configured on the resource where the control area is located.

 Step 112: The UE determines the occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource. For details, refer to step 102.

 Step 113: The UE receives the information of the E-PHICH in the corresponding occupied part of the E-PHICH resource. Step 114: The UE receives the specific identifier sent by the eNB.

 The specific identifier is a preset identifier for randomizing interference, and the specific identifier may be specifically a UE identifier (UE_ID), a cell identifier (cell_ID), a sending point identifier, and the like.

Step 115: The UE adopts the specific identifier, the information about the received E-PHICH, and/or is used to demodulate the The DMRS of the E-PHICH is descrambled.

 For the specific content of the UE side, reference may also be made to the related description in the foregoing embodiment.

 In this embodiment, by configuring a specific identifier for the UE, the E-PHICH interference can be randomized to reduce inter-cell interference, and the introduction of technologies such as multi-user MIMO and CoMP (especially CoMP scenarios sharing the same cell identifier) can also avoid PHICH resources. The problem of increased collisions, on the other hand, increases the PHICH capacity.

 FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention, including a processing module 121 and a sending module 122. The processing module 121 is configured to configure an E-PHICH resource, and determine an E-PHICH corresponding to the UE in the E-PHICH resource. The E-PHICH resource is configured in at least part of the resources occupied by the search space of the E-PDCCH; the sending module 122 is configured to map the information of the E-PHICH corresponding to the UE to the E-PHICH resource. Corresponding occupied part, and sent to the UE.

 Optionally, the processing module is specifically configured to:

 Configuring an E-PHICH resource in a time-frequency resource of at least one resource block RB or RB pair occupied by the search space of the E-PDCCH; or

 Configuring an E-PHICH resource in a time-frequency resource in which at least one of the RBs or RB pairs occupied by the search space of the E-PDCCH is located; or

 The E-PHICH resource is configured in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 If the symbol occupied by the common search space of the E-PDCCH starts from the n+1th symbol, the E-PHICH resource is configured to correspond to the first n symbols of the RB or RB pair occupied by the common search space of the E-PDCCH. Within the time-frequency resources; or,

 The E-PHICH resource is configured in the RB or RB pair in which the search space of the E-PDCCH is located, and is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH.

 Optionally, the information about the E-PHICH corresponding to the UE includes at least two types, and the sending module includes: a mapping unit, configured to map different E-PHICH information into different manners, and map the information to the E - the corresponding occupied portion of the PHICH resource;

 And a sending unit, configured to send, to the UE, information of an E-PHICH that is mapped to a corresponding occupied part of the E-PHICH resources.

 Optionally, the mapping unit is specifically configured to:

The information of the E-PHICH mapped to the time-frequency resource where the first symbol is located is different from the information of the E-PHICH mapped to the time-frequency resource where the second symbol is located, where the first symbol is used. And second character The symbol is the symbol of any two different items in the following items: CRS, DMRS, CSI-RSo. The sending module is specifically configured to: use the specific identifier to the information and/or demodulation of the E-PHICH corresponding to the UE. The E-PHICH demodulation reference signal DMRS is scrambled and then sent to the UE, and the specific identifier is sent to the UE, so that the UE uses the specific identifier to receive the E-PHICH information. And/or demodulating the DMRS of the E-PHICH for de-interference, the specific identifier being a preset identifier for randomizing interference.

 Or, optionally, the processing module is configured to configure an E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource, where the E-PHICH resource is located in at least one RB or RB pair, Or the information is located in a time-frequency resource where at least one of the at least one RB or the RB pair is located; the sending module is configured to map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and Sent to the UE. Alternatively, the processing module is configured to: configure an E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource; and send, by the sending module, the E-PHICH corresponding to the UE Information and/or DMRS used to demodulate the E-PHICH is scrambled with a specific identity, and information of the scrambled or unscrambled E-PHICH is mapped to a corresponding occupied portion of the E-PHICH resource And transmitting the scrambled E-PHICH information and/or DMRS to the UE. Alternatively, the processing module is configured to: configure an E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource; and send, by the sending module, the E-PHICH corresponding to the UE The information is mapped to the corresponding occupied part of the E-PHICH resource by using different mapping manners, and is sent to the UE.

 In this embodiment, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the problem that the E-PHICH resource is configured in the control area may not be configured in the prior art may be avoided.

 FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention, including a processing module 131 and a receiving module 132. The processing module 131 is configured to acquire an E-PHICH resource, and determine that an E-PHICH corresponding to the UE is in the E-PHICH resource. The occupant part, the E-PHICH resource is configured in at least part of the resources occupied by the search space of the E-PDCCH; the receiving module 132 is configured to receive the E corresponding to the UE in the corresponding occupied part of the E-PHICH resource -PHICH information.

 Optionally, the receiving module is specifically configured to:

 Receiving a specific identifier sent by the e B, and using the specific identifier, performing descrambling processing on the received E-PHICH information and/or the DMRS used to demodulate the E-PHICH, where the specific identifier is preset The identifier used to randomize the interference.

Optionally, the processing module is specifically configured to: Acquiring an E-PHICH resource in a time-frequency resource of at least one RB or RB pair occupied by the search space of the E-PDCCH; or

 Obtaining an E-PHICH resource in a time-frequency resource in which at least one of the RBs or RB pairs occupied by the search space of the E-PDCCH is located; or

 Acquiring an E-PHICH resource in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 The E-PHICH resource is acquired in a time-frequency resource corresponding to the first n symbols of the RB or the RB pair occupied by the common search space of the E-PDCCH, and the symbol occupied by the common search space of the E-PDCCH is from the n+1th Start with a symbol; or,

 There are no candidates in the search space in the RB or RB pair where the E-PDCCH search space is located.

Among the resources occupied by the E-PDCCH, the E-PHICH resource is obtained.

 In this embodiment, by configuring the E-PHICH resource in at least part of the resources occupied by the search space of the E-PDCCH, the problem that the E-PHICH resource is configured in the control area may not be configured in the prior art may be avoided.

 It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be performed by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

 It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Rights request

A method for transmitting control signaling, comprising:

 Configuring an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, where the E-PHICH resource is configured to be at least part of resources occupied by a search space of an enhanced physical downlink control channel E-PDCCH;

 Determining, in the E-PHICH resource, the occupied part of the E-PHICH corresponding to the UE, mapping the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and sending the information to the Said UE.

 The method according to claim 1, wherein the configuring the E-PHICH resource comprises: configuring the E-PHICH resource in at least one resource block RB occupied by the search space of the E-PDCCH or Within the time-frequency resource of the RB pair; or,

 Configuring an E-PHICH resource in a time-frequency resource in which at least one of the RB or RB pairs occupied by the search space of the E-PDCCH is located; or

 The E-PHICH resource is configured in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 If the symbol occupied by the common search space of the E-PDCCH starts from the n+1th symbol, the E-PHICH resource is configured to correspond to the first n symbols of the RB or RB pair occupied by the common search space of the E-PDCCH. Within the time-frequency resources; or,

 The E-PHICH resource is configured in the RB or RB pair in which the search space of the E-PDCCH is located, and is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH.

 The method according to claim 1 or 2, wherein the information of the E-PHICH corresponding to the UE includes at least two types, and the information of the E-PHICH corresponding to the UE is mapped to the E-PHICH. The corresponding occupied part of the resource, including:

 The information of different E-PHICHs is mapped to the corresponding occupied part of the E-PHICH resources by using different mapping modes.

 The method according to claim 3, wherein the different E-PHICH information is used in different mapping manners, including:

The information of the E-PHICH mapped to the time-frequency resource where the first symbol is located is different from the information of the E-PHICH mapped to the time-frequency resource where the second symbol is located, where the first symbol is used. And the second symbol is a symbol in which any two different items in the following are located: a cell-specific reference signal CRS, a demodulation reference signal DMRS, and a channel state information reference signal CSI-RS.

The method according to claim 1 or 2, wherein the mapping the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource comprises:

 And mapping, when the information of the E-PHICH is mapped to the time-frequency resource where the first symbol is located, to the corresponding occupied part of the E-PHICH resource by using a first mapping manner, and when mapping the information of the E-PHICH And mapping to the corresponding occupied part of the E-PHICH resource by using a second mapping manner, where the first mapping manner is different from the second mapping manner, where the first symbol is And the second symbol is the symbol of any two different items in the following items: CRS, DMRS, CSI-RSo

 6. The method of claim 1 wherein:

 The sending to the UE includes: performing, by using a specific identifier, information about an E-PHICH corresponding to the UE and/or demodulating the demodulation reference signal DMRS of the E-PHICH, and then sending the information to the UE, where The specific identifier is a preset identifier for randomizing interference;

 The method further includes: transmitting the specific identifier to the UE, so that the UE uses the specific identifier to descramble the received E-PHICH information and/or demodulate the E-PHICH DMRS.

 A method for receiving control signaling, comprising:

 Obtaining an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, where the E-PHICH resource is configured to be at least part of resources occupied by a search space of the enhanced physical downlink control channel E-PDCCH;

 Determining, by the user equipment, the E-PHICH corresponding to the E-PHICH resource, the corresponding part of the E-PHICH resource, and receiving the information of the E-PHICH corresponding to the UE.

8. The method according to claim 7, further comprising:

 Receiving a specific identifier sent by the evolved base station e B, where the specific identifier is a preset identifier for randomizing interference;

 The acquiring the information of the E-PHICH corresponding to the UE includes:

 Using the specific identifier, the received E-PHICH information and/or the demodulation reference signal DMRS used to demodulate the E-PHICH are descrambled.

 The method according to claim 7 or 8, wherein the acquiring the E-PHICH resource comprises: when at least one resource block RB or RB pair occupied by the search space of the E-PDCCH Within the frequency resource, obtain the E-PHICH resource; or,

 Obtaining an E-PHICH resource in a time-frequency resource in which at least part of the at least one RB or RB pair occupied by the search space of the E-PDCCH is located; or

Acquiring E-PHICH resources in a common search space of the enhanced physical downlink control channel E-PDCCH, The search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 The E-PHICH resource is acquired in a time-frequency resource corresponding to the first n symbols of the RB or the RB pair occupied by the common search space of the E-PDCCH, and the symbol occupied by the common search space of the E-PDCCH is from the n+1th Start with a symbol; or,

 The E-PHICH resource is obtained from a part of resources of the RB or RB pair in which the search space of the E-PDCCH is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH.

 10. A base station, comprising:

 a processing module, configured to configure an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the user equipment UE in the E-PHICH resource, where the E-PHICH resource is configured in The at least part of the resources occupied by the search space of the physical downlink control channel E-PDCCH is enhanced; the sending module is configured to map the information of the E-PHICH corresponding to the UE to the corresponding occupied part of the E-PHICH resource, and Sent to the UE.

 The base station according to claim 10, wherein the processing module is specifically configured to: configure an E-PHICH resource to at least one resource block RB or RB pair occupied by the search space of the E-PDCCH Within the time-frequency resources; or,

 Configuring an E-PHICH resource in a time-frequency resource in which at least one of the RBs or RB pairs occupied by the search space of the E-PDCCH is located; or

 The E-PHICH resource is configured in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 If the symbol occupied by the common search space of the E-PDCCH starts from the n+1th symbol, the E-PHICH resource is configured to correspond to the first n symbols of the RB or RB pair occupied by the common search space of the E-PDCCH. Within the time-frequency resources; or,

 The E-PHICH resource is configured in the RB or RB pair in which the search space of the E-PDCCH is located, and is not occupied by the candidate E-PDCCH in the search space of the E-PDCCH.

 The base station according to claim 10 or 11, wherein the information of the E-PHICH corresponding to the UE includes at least two types, and the sending module includes:

 a mapping unit, configured to map different E-PHICH information into different corresponding mapping manners in the E-PHICH resource by using different mapping manners;

And a sending unit, configured to send, to the UE, information about an E-PHICH that is mapped to a corresponding occupied part of the E-PHICH resources.

The base station according to claim 12, wherein the mapping unit is specifically configured to: map the information of the E-PHICH mapped to the time-frequency resource where the first symbol is located, and map the information to the second symbol The information of the E-PHICH on the time-frequency resource adopts different mapping modes, where the first symbol and the second symbol are symbols in which any two different items in the following are located: cell-specific reference signal CRS, demodulation reference Signal DMRS, channel state information reference signal CSI-RS.

 The base station according to claim 10 or 11, wherein the sending module is specifically configured to: adopt a first mapping manner when the information of the E-PHICH is mapped to a time-frequency resource where the first symbol is located Mapping to the corresponding occupied portion of the E-PHICH resource, and mapping to the E-PHICH resource by using a second mapping manner when the information of the E-PHICH is mapped to the time-frequency resource where the second symbol is located The first mapping mode and the second mapping mode are different, and the first symbol and the second symbol are symbols of any two different items in the following items: CRS, DMRS, CSI-RSo

 The base station according to claim 10, wherein the sending module is specifically configured to: demodulate the E-PHICH corresponding to the UE by using a specific identifier and/or demodulate the E-PHICH The reference signal DMRS is scrambled and then sent to the UE, and the specific identifier is sent to the UE, so that the UE uses the specific identifier to receive information about the E-PHICH and/or demodulate the The DMRS of the E-PHICH is descrambled, and the specific identifier is a preset identifier for randomizing interference.

 A user equipment (UE), comprising:

 a processing module, configured to acquire an enhanced physical hybrid field retransmission request indication channel E-PHICH resource, and determine an occupied part of the E-PHICH corresponding to the UE in the E-PHICH resource, where the E-PHICH resource is configured in an enhanced physics At least part of the resources occupied by the search space of the downlink control channel E-PDCCH;

 And a receiving module, configured to receive information about the E-PHICH corresponding to the UE in a corresponding occupied part of the E-PHICH resource.

 The device according to claim 16, wherein the receiving module is specifically configured to: receive a specific identifier sent by the e B, and use the specific identifier to receive information about the E-PHICH and/or The DMRS used to demodulate the E-PHICH performs descrambling processing, and the specific identifier is a preset identifier for randomizing interference.

 The device according to claim 16 or 17, wherein the processing module is specifically configured to: in a time-frequency resource of at least one RB or RB pair occupied by the search space of the E-PDCCH, Obtain E-PHICH resources; or,

Where at least one of the RB or RB pairs occupied by the search space of the E-PDCCH is located Obtain E-PHICH resources in time-frequency resources; or,

 Acquiring an E-PHICH resource in a common search space of the E-PDCCH, where the search space of the E-PDCCH includes a common search space of the E-PDCCH; or

 The E-PHICH resource is acquired in a time-frequency resource corresponding to the first n symbols of the RB or the RB pair occupied by the common search space of the E-PDCCH, and the symbol occupied by the common search space of the E-PDCCH is from the n+1th Start with a symbol; or,

 The E-PHICH resource is obtained from a part of resources of the RB or RB pair in which the search space of the E-PDCCH is not occupied by the candidate E-PDCCH in the search space.