WO2014036727A1 - Wireless communication method and device, and network node - Google Patents

Abstract

Embodiments of the present invention relate to a wireless communication method and device, and a network node. The wireless communication method comprises: receiving at least one candidate signal from one or more adjacent nodes, wherein the at least one candidate signal comprises at least one candidate signal group, and the candidate signal group corresponds to a physical-layer parameter configuration that comprises at least one of a subframe proportion configuration and a carrier frequency configuration; determining a physical-layer parameter configuration used in wireless communication based on the at least one candidate signaling group. The present invention can listen to specified signals and set the proper physical-layer parameter configuration before modifying the physical-layer parameter configuration in adaptive mode, preventing the interference with adjacent cells.

Description

 Method and device for wireless communication, network node

 The present invention relates to the field of communication technologies, and in particular, to a method and apparatus for wireless communication, and a network node. Background technique

 The Long Term Evolution (LTE) system is an evolving system. In the Time Division Duplex (TDD) LTE system, the network side notifies the user equipment of the subframe ratio through the system broadcast message. Usually, the sub-frame ratio change can be completed through the system message update process, and it takes at least 640 milliseconds (ms) to change. However, a change in the sub-frame ratio usually results in a business interruption for a period of time. In order to minimize the impact on service disruption, the subframe ratio in the actual system tends to change little, even after the network deployment is completed.

 Considering the burstiness of uplink and downlink services, when the number of users is small, the subframe matching ratio needs to be changed relatively quickly to better match the current traffic characteristics. In the prior art, each cell can dynamically change its subframe ratio according to the instantaneous service requirement of the user equipment it serves, wherein the subframe ratio can be changed once every hundreds of milliseconds or even as short as ten milliseconds.

 After each cell dynamically changes the subframe ratio according to the instantaneous service requirement of the user, the ratio of the subframes used by the neighboring cells may be different, and the interference of uplink and downlink data transmission between adjacent cells may be caused. In particular, when a cell changes the subframe ratio according to the instantaneous service requirement of the user equipment it serves, it may cause strong interference to the neighboring cells and affect the communication performance of the neighboring cells.

 In addition, since the dynamic change of the subframe ratio is mainly applied to small cells, these small cells are likely to be deployed in a high frequency band having a bandwidth of 4 inches, for example, a frequency band of 3.5 GHz to 4.2 GHz. Currently, an LTE TDD carrier can support a maximum bandwidth of 20 MHz, that is, multiple carriers can be selected in the 3.5 GHz to 4.2 GHz band. How to choose the appropriate physical layer parameter configuration consisting of subframe ratio and/or carrier frequency is a problem to be studied. Summary of the invention

The present invention proposes a method and apparatus for wireless communication, and a network node for solving the problem of how to determine physical layer parameter configuration to avoid interference. According to a first aspect of the present invention, a method of wireless communication, comprising: receiving at least one candidate signal from one or more neighboring nodes, the at least one candidate signal comprising at least one candidate signal group, the candidate signal group corresponding to A physical layer parameter configuration, where the physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency; determining, according to the at least one candidate signal group, a physical layer parameter configuration for wireless communication .

 In a preferred implementation manner of the method, the candidate signal group includes one candidate signal; or the candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N The candidate signals correspond to different resource utilization rates.

 In another preferred implementation of the method, at least one candidate signal may be received from one or more neighboring nodes in a guard slot.

 In another preferred implementation manner of the method, before the receiving, by the one or more neighboring nodes, the at least one candidate signal, the method further includes: determining, according to a service requirement and/or a change of a transmission quality of the service channel, The physical layer parameter configuration needs to be changed. For example, the business demand is related to the ratio of the upper and lower business and/or the size of the business.

 In another preferred implementation of the method, at least one candidate signal may be received periodically from one or more neighboring nodes.

 In another preferred implementation manner of the method, a physical layer parameter configuration for wireless communication may be determined based on a relationship between a received strength of the at least one candidate signal group and a received strength threshold. For example, the reception strength of the at least one candidate signal group may be a sum, a maximum value, a minimum value, or an average value of reception strengths of candidate signals in the at least one candidate signal group, or in the at least one candidate signal group The received strength of the candidate signal corresponding to the resource utilization of the node.

 In another preferred implementation manner of the method, when a receiving strength of the at least one candidate signal group is less than or equal to a first receiving strength threshold, determining a physical layer for wireless communication according to a service requirement. Or parameter configuration; or, when the received strength of the at least one candidate signal group is greater than the first received strength threshold, determining that a physical layer parameter for wireless communication is configured as a physical layer corresponding to a candidate signal group having the highest receiving strength Parameter configuration, or determining a physical layer parameter configuration for wireless communication according to a service requirement and according to a candidate signal group whose reception strength is greater than the first reception strength threshold.

In another preferred implementation manner of the method, when the receiving strength of the at least one candidate signal group is less than or equal to the second receiving strength threshold, determining, according to the service requirement, a physical layer parameter configuration of the line communication; or, when a received strength of the first candidate signal group in the at least one candidate signal group is greater than the second received intensity threshold and less than or equal to a third received intensity threshold, And when the received strength of the second candidate signal group in the at least one candidate signal group is less than the second received intensity threshold, wherein the second received strength threshold is less than the third received strength threshold Determining, according to a service requirement, a physical layer parameter configuration for wireless communication according to a candidate signal group whose reception strength is less than the second reception intensity threshold; or, when the reception strength of the at least one candidate signal group is greater than the And a second receiving strength threshold value, wherein the second receiving strength threshold value is smaller than the third receiving strength threshold value, and is determined according to the service requirement. Physical layer parameter configuration of wireless communication; or, when a received strength of at least one of the at least one candidate signal group is greater than the third received strength When the limit value is determined, the physical layer parameter configured for wireless communication is configured to receive the physical layer parameter configuration corresponding to the candidate signal group with the highest intensity, or according to the service requirement and according to the candidate signal whose received strength is greater than the third received intensity threshold The group determines the physical layer parameter configuration for wireless communication.

 In another preferred implementation manner of the method, the method of the embodiment of the present invention further includes: the physical layer parameter configuration for wireless communication determined to the central node.

 In another preferred implementation manner of the method, the method of the embodiment of the present invention further includes a candidate signal group configured by a parameter.

 In another preferred implementation manner of the method, the method of the embodiment of the present invention further includes: performing wireless communication using the physical layer parameter configuration for wireless communication.

 In another preferred embodiment of the method, the candidate signal is in the form of a sequence, for example, one of the following sequences: a sequence used by the synchronization signal, a dolphoff-divide sequence, and based on a dolph. A sequence obtained by truncating, cyclically expanding, or puncturing a sequence. The candidate signal is distinguished by at least one of a time domain occupied by the sequence, a frequency domain occupied, and a code resource occupied.

 In another preferred implementation manner of the method, a correspondence between the candidate signal group and the physical layer parameter configuration is configured in the at least one neighboring node, or the candidate signal group and the The correspondence between the physical layer parameter configurations is notified by the central node to the at least one neighboring node.

In another preferred implementation manner of the method, the candidate signal is configured at the at least one neighboring node, or the candidate signal is notified by the central node to the at least one adjacent node Point.

 Above, the neighboring node is a base station or a user equipment.

 According to another aspect of the present invention, a method for wireless communication includes: a first node determining a candidate signal group according to a physical layer parameter configuration of the first node, and a correspondence between the physical layer parameter configuration and a candidate signal group The first node transmits at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 In another preferred implementation manner of the method, the candidate signal group includes one candidate signal; or the candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N The candidate signals correspond to different resource utilization rates.

 In another preferred implementation manner of the method, the first node may transmit, in the guard slot, the at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 In another preferred implementation manner of the method, the first node periodically transmits at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 In another preferred implementation manner of the method, the candidate signal comprises one of the following sequences: a sequence used by the synchronization signal, a radon-divide sequence, and a truncation based on the zardorf-division sequence, The sequence obtained by cyclically expanding or puncturing.

 In another preferred implementation manner of the method, the candidate signal is distinguished by at least one of a time domain occupied by the sequence, an occupied frequency domain, and an occupied code resource.

 In another preferred implementation manner of the method, the first node includes one of a base station and a user equipment; and the neighboring node includes one of a base station and a user equipment.

 According to another aspect of the present invention, an apparatus for wireless communication, comprising: a receiving unit, configured to receive at least one candidate signal from one or more neighboring nodes, the at least one candidate signal comprising at least one candidate signal group, The candidate signal group corresponds to a physical layer parameter configuration, where the physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency; and the determining unit determines, according to the at least one candidate signal group, Physical layer parameter configuration for wireless communication.

 In a preferred implementation manner of the apparatus, the receiving unit is configured to: receive at least one candidate signal from one or more neighboring nodes in a guard slot; or periodically from one or more neighbors The node receives at least one candidate signal.

In another preferred implementation manner of the apparatus, the determining unit is further configured to: before the receiving the at least one candidate signal from the one or more neighboring nodes, according to service requirements and/or service letters The change of the transmission quality of the channel determines that the physical layer parameter configuration needs to be changed, where the service requirement is related to the uplink and downlink service ratio and/or the traffic volume.

 In another preferred implementation manner of the apparatus, the determining unit is configured to: determine a physical layer parameter configuration for wireless communication according to a relationship between a received strength of the at least one candidate signal group and a received strength threshold value. And a received strength of the at least one candidate signal group is a sum, a maximum value, a minimum value, or an average value of received strengths of candidate signals in the at least one candidate signal group, or is in the at least one candidate signal group The received strength of the candidate signal corresponding to the resource utilization of the node.

 In another preferred implementation manner of the apparatus, the determining unit is specifically configured to: when the received strength of the at least one candidate signal group is less than or equal to the first receiving strength threshold, determine according to the service requirement. Physical layer parameter configuration for wireless communication; or, when the received strength of the at least one candidate signal group is greater than the first received strength threshold, determining that physical layer parameters for wireless communication are configured as candidates with the highest received strength The physical layer parameter configuration corresponding to the signal group, or the physical layer parameter configuration for wireless communication is determined according to the service requirement and according to the candidate signal group whose receiving strength is greater than the first receiving strength threshold.

In another preferred implementation manner of the apparatus, the determining unit is specifically configured to: when the received strength of the at least one candidate signal group is less than or equal to the second receiving strength threshold, determine according to the service requirement. Physical layer parameter configuration for wireless communication; or, when a received strength of the first candidate signal group in the at least one candidate signal group is greater than the second received intensity threshold and less than or equal to a third received intensity threshold And the receiving strength of the second candidate signal group in the at least one candidate signal group is less than the second receiving strength threshold, wherein the second receiving strength threshold is less than the third receiving strength threshold a value, a physical layer parameter configuration for wireless communication is determined according to a service requirement and a candidate signal group whose reception strength is less than the second reception strength threshold; or, when the reception strength of the at least one candidate signal group is greater than When the second received intensity threshold is less than or equal to the third received intensity threshold, wherein the second received intensity threshold is less than the a receiving strength threshold value, determining a physical layer parameter configuration for wireless communication according to a service requirement; or, when a receiving strength of at least one of the at least one candidate signal group is greater than the third receiving intensity threshold The value of the physical layer parameter configured for the wireless communication is configured to receive the physical layer parameter configuration corresponding to the candidate signal group with the highest intensity, or the candidate signal group according to the service requirement and according to the received strength greater than the third received intensity threshold. Determine the physical layer parameter configuration for wireless communication. In another preferred implementation manner of the apparatus, the apparatus for wireless communication further includes: a sending unit, configured to: report, to the central node, the determined physical layer parameter configuration for wireless communication; or to the one or more The neighboring nodes transmit candidate signal groups corresponding to the determined physical layer parameter configurations for wireless communication.

 In another preferred embodiment of the apparatus, the apparatus for wireless communication further includes a communication unit for: wirelessly communicating using the physical layer parameter configuration for wireless communication.

 In another preferred implementation manner of the apparatus, the candidate signal group includes one candidate signal; or the candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N The candidate signals correspond to different resource utilization rates.

 According to another aspect of the present invention, an apparatus for wireless communication includes: a determining module, determining a candidate signal group according to a physical layer parameter configuration of the first node, and a correspondence between the physical layer parameter configuration and a candidate signal group And a sending module, configured to send, to one or more neighboring nodes, at least one candidate signal included in the candidate signal group determined by the determining module.

 In another preferred implementation manner of the apparatus, the candidate signal group includes one candidate signal; or the candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N The candidate signals correspond to different resource utilization rates.

 In another preferred implementation manner of the apparatus, the sending module is specifically configured to: in a protection slot, the first node sends the candidate signal group to one or more neighboring nodes. At least one candidate signal.

 In another preferred implementation manner of the apparatus, the sending module is specifically configured to periodically send at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 In another preferred implementation manner of the apparatus, the candidate signal comprises one of the following sequences: a sequence used by the synchronization signal, a dolphoff-dividing sequence, and truncation based on a zardorf-division sequence, The sequence obtained by cyclically expanding or puncturing.

 In another preferred implementation manner of the apparatus, the candidate signal is distinguished by at least one of a time domain occupied by the sequence, an occupied frequency domain, and an occupied code resource.

 In another preferred embodiment of the apparatus, the apparatus comprises one of a base station and a user equipment.

According to another aspect of the present invention, a network node includes: a receiver, configured to receive at least one candidate signal from one or more neighboring nodes, the at least one candidate signal including at least one a candidate signal group, the candidate signal group corresponding to a physical layer parameter configuration, wherein the physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency; and a processor, configured to A candidate signal group that determines the physical layer parameter configuration for wireless communication.

 According to another aspect of the present invention, a network node includes: a processor, configured to determine a candidate signal group according to a physical layer parameter configuration of the first node, and a correspondence between the physical layer parameter configuration and a candidate signal group And a transmitter, configured to send, to one or more neighboring nodes, at least one candidate signal included in the processor-determined candidate signal group.

 The embodiments of the present invention can set an appropriate physical layer parameter configuration by listening to a specific signal before adaptively changing the physical layer parameter configuration in the wireless communication system, thereby avoiding interference to surrounding cells. DRAWINGS

 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

 1 is a flow chart of a method of wireless communication in accordance with an embodiment of the present invention.

 2 is a flow chart of a method of wireless communication in accordance with another embodiment of the present invention.

 FIG. 3 is a schematic structural diagram of an apparatus for wireless communication according to an embodiment of the present invention.

 FIG. 4 is a schematic structural diagram of an apparatus for wireless communication according to another embodiment of the present invention.

 FIG. 5 is a schematic structural diagram of an apparatus for wireless communication according to another embodiment of the present invention.

 FIG. 6 is a schematic structural diagram of a network node according to an embodiment of the present invention.

 FIG. 7 is another schematic structural diagram of a network node according to an embodiment of the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA, Code Division Multiple Access (WCDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Time Division Synchronization Code TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), Worldwide Interoperability for Microwave Access (WiMAX).

 The UE may also be referred to as a mobile terminal, a mobile station, or the like, and may communicate with the core network via a radio access network (e.g., RAN, Radio Access Network). The user equipment exchanges voice and/or data with the wireless access network.

 The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (Node B) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The present invention is not limited, but for convenience of description, the following embodiments are described by taking Node B as an example. In addition, a base station may support/manage one or more cells. When the UE needs to communicate with the network, it will select a cell to initiate network access.

 The flow of the method of wireless communication according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In fact, the method for adaptively changing the physical layer parameter configuration provided by the embodiment of the present invention can be applied to a base station or a UE. The transmitting end of the candidate signal may be a base station or a UE, and the receiving end may also be a base station or a UE. For convenience of description, the base station or the UE will be collectively referred to as a Node. As shown in FIG. 1, a method of wireless communication according to an embodiment of the present invention includes the following steps.

 Step 11: A network node receives at least one candidate signal from one or more neighboring nodes, the at least one candidate signal includes at least one candidate signal group, and the candidate signal group corresponds to a physical layer parameter configuration, where The physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency. Here, the neighboring node may be a node capable of receiving a signal from the network node and/or transmitting a signal to the network node.

Specifically, the physical layer parameter includes at least one of a subframe ratio and a carrier frequency. The candidate signal group may correspond to a subframe ratio, or a carrier frequency, or a combination of a subframe ratio and a carrier frequency. It can be seen that there is a correspondence between the candidate signal group and the physical layer parameter configuration. On one hand, a plurality of candidate signal groups may be configured corresponding to one physical layer parameter, or one candidate signal group may be configured corresponding to one physical layer parameter. The carrier frequency may be a center frequency and/or a frequency bandwidth used for wireless communication on one carrier, or may be one carrier The frequency range used for wireless communication. It should be noted that, in the candidate signal, in addition to the candidate signal group corresponding to the physical layer parameter configuration, signals may be included for other purposes, such as a node sent to help neighboring nodes identify their identity. Information discovery signals, etc.

 The LTE TDD system supports a variety of different uplink and downlink subframe ratios, as shown in Table 1. Where D represents a downlink subframe, S represents a special subframe, and U represents an uplink subframe. At the time of the downlink subframe, the network device may send the downlink data packet to the UE; in the uplink subframe time, the UE may send the uplink data packet to the network device. At a special subframe time, the network device may send a downlink data packet to the UE, but the UE cannot send an uplink data packet to the network device, and thus the special subframe is also generally treated as a downlink subframe.

 Table 1 Subframe ratios supported by the LTE TDD system

 Taking the 3.5GHz to 4.2GHz bandwidth as an example, it can be divided into 35 20MHz LTE carriers. When the carrier used for wireless communication can be selected among the 35 carriers, then 35 different candidate signal groups can be defined in the candidate signal, and each candidate signal group corresponds to a different 20 MHz LTE carrier. For example, if a single-carrier LTE TDD system supports dynamic change according to service requirements among the 7-seed frame ratios shown in Table 1, seven different candidate signal groups can be defined in the candidate signals, and each candidate signal group is respectively Corresponds to a different sub-frame ratio. Another example is a multi-carrier LTE TDD system, which assumes that it occupies the 3.5 GHz to 3.7 GHz band and has 10 20 MHz carriers, and each carrier can support the 7-seed frame ratio shown in Table 1 according to service requirements. To dynamically change, then 70 different candidate signal groups can be defined in the candidate signal, and each candidate signal group corresponds to a combination of one subframe ratio and carrier frequency.

Generally, in order not to affect the uplink and downlink throughput of the system, it may be considered to receive at least one candidate signal from one or more neighboring nodes in a guard time slot (GP, Guard Period). Similarly, When a node needs to transmit a candidate signal, the candidate signal corresponding to the physical layer parameter configuration used by the current wireless communication is also transmitted to one or more neighboring nodes in the guard slot. As described above, in the LTE TDD system, one subframe is divided into three types: a downlink subframe, a special subframe, and an uplink subframe according to its use. A special subframe includes a downlink pilot slot (DwPTS, Downlink Pilot Time Slot), an uplink pilot slot (UpPTS, Uplink Pilot Time Slot), and a GP. The DwPTS is used by the base station to send downlink information to the UE, and the UpPTS is used. The UE sends an uplink sounding reference signal and a short random access signal to the base station, and the GP idles the information. The GP is located between the DwPTS and the UpPTS to avoid interference between uplink and downlink transmissions. The candidate signal may be transmitted on the resources of the DwPTS in the downlink subframe or the special subframe, or may be transmitted on the resources of the UpPTS in the uplink subframe or the special subframe. If the candidate signal is transmitted on the resources of the DwPTS in the downlink subframe or the special subframe, when the node of the candidate signal needs to be received, since the receiving and transmitting cannot be performed at the same time, the base station is receiving the candidate signal. The downlink signal cannot be sent within the time, which affects the downlink throughput of the system. Similarly, if the candidate signal is transmitted on the UpPTS resource in the uplink subframe or the special subframe, when the node that needs to receive the candidate signal is the UE, because the receiving and transmitting cannot be simultaneously performed, the UE may be in the receiving candidate. The uplink signal cannot be sent during the signal time, which affects the system uplink throughput. Therefore, preferably, the candidate signal is transmitted on the resources of the GP in the special subframe. Considering that the candidate signal may be transmitted and received between the base station and the base station, between the base station and the UE, and between the UE and the UE, there may be a period of idle time before and after the candidate signal, and then the candidate The transmission of the signal may use only part of the time and frequency resources of the GP, for example, only part of the bandwidth is transmitted on the OFDM's Orthogonal Frequency Division Multiplexing (OFDM) symbol. When the OFDM symbols of the multiple transmission candidate signals are located in the GP of the same special subframe, the OFDM symbols of the adjacent two transmission candidate signals may also have a period of idle time, such as an idle time of one OFDM symbol. .

In general, candidate signals are represented in the form of a sequence. The candidate signal can be designed as a specific sequence that is configured both at the transmitting end node and the receiving end node, for example, reference can be made to the synchronization signal in the LTE system or to some sequence design used in the design of the reference signal. In the LTE system, the secondary synchronization signal can be used to distinguish 168 groups of cell identifiers, and the primary synchronization signal can be used to further distinguish three cell identifiers in a group of cell identifiers. For example, when the candidate signal needs to distinguish not more than 168 different physical layer parameter configuration combinations, the secondary synchronization signal design of the LTE system can be directly reused. The Zadoff-Chu sequence used by the LTE system uplink reference signal is a constant amplitude zero autocorrelation sequence. It has good correlation characteristics, especially the cross-correlation between different cyclic shifts of the same root sequence is zero, and is widely used in communication systems. Preferably, the candidate signal uses a Zadoff-Chu sequence, or a sequence obtained by truncation, Cyclic Extension or Punchture based on the Zadoff-Chu sequence. Different candidate signals are distinguished by at least one of a time domain occupied by the sequence, a frequency domain occupied, and a code domain resource occupied. For example, different candidate signals may be distinguished by different reception times, or different candidate signals may be distinguished by different reception bands, or different candidate signals may be distinguished by different code resources used at the time of reception. When the candidate signal adopts some specific sequence, such as Zadoff-Chu sequence, different cyclic shifts of the same Zadoff-Chu root sequence, and different Zadoff-Chu root sequences can be regarded as different sequence code resources.

As mentioned above, among the candidate signals, the candidate signal group corresponds to a physical layer parameter configuration. Optionally, each candidate signal group may be configured corresponding to one physical layer parameter, and different candidate signals may be distinguished by at least one of a time domain, a frequency domain, and a code domain resource occupied by the candidate signal group. The correspondence between the candidate signal group and the physical layer parameter configuration may be configured in the at least one neighboring node or notified to the at least one neighboring node by the central node. One way is to establish a correspondence between the candidate signal index and the physical layer parameter configuration index in the candidate signal group, and further acquire the time domain, frequency domain, and code domain resources occupied by the candidate signal by using the candidate signal index; The method is to directly establish a correspondence between a physical layer parameter configuration and a time domain, a frequency domain, and a code domain resource occupied by candidate signals in the candidate signal group. When the correspondence between the candidate signal group and the physical layer parameter configuration is a predetermined correspondence according to the protocol, the corresponding relationship may be configured in the adjacent node in advance. For each candidate signal group of the seven candidate signal groups and the candidate signals, one candidate signal is included and one of the subframe ratios in Table 1 is taken as an example, and the candidate signal is assumed to be a Zadoff-Chu sequence or a Zadoff-Chu sequence. To perform the sequence of truncation, cyclic extension or puncturing, then a candidate signal cyclic shift value can be specified for each seed frame ratio and stored in the receiving end node and the transmitting end node of the candidate signal. At the transmitting end node, the cyclic shift used when transmitting the candidate signal may be acquired according to the currently used subframe ratio, that is, the candidate signal using the corresponding cyclic shift is transmitted on the resource of the GP of the special subframe. The receiving end node receives the corresponding candidate signal on the GP resource of the special subframe according to the subframe ratio that may be used by itself, and selects an appropriate subframe ratio according to the receiving strength of the candidate signal. When the correspondence between the candidate signal group and the physical layer parameter configuration is notified to the at least one neighboring node by the central node, if the receiving end node or the transmitting end node of the candidate signal includes the UE, the central node may be the UE Serving base station or macro base station; The receiving end node or the transmitting end node of the selected signal includes the base station, and then the central node may be a macro base station, a base station controller or a core network device. As described above, a typical scenario considered by the embodiment of the present invention is a small cell used for hotspot coverage in the 3.5 GHz band, and then, outside the small cell, there is likely to be deployed in the lower frequency band for full coverage and no The roaming macro network (such as the LTE TDD network or even the 3G network in the 1.8 GHz band), at this time, the macro base station in the macro network can serve as a central node to assist in managing the small base station or the small base station UE and other nodes in the geographical range of the macro base station. , helping them better coordinate the use of candidate signals for wireless communication.

 In addition, the at least one candidate signal group belongs to one candidate signal set, and the candidate signal set may also be configured in at least one neighboring node, or notified by the central node to at least one neighboring node. For example, a candidate signal group can be defined for each supported subframe ratio according to the supported subframe matching type. When receiving the candidate signal, the receiving node always receives all candidate signals. For another example, the central node sends the configured candidate signal set and the carrier frequency and the subframe corresponding to each candidate signal group to the receiving end node and the transmitting end node according to the bandwidth and processing capability supported by the receiving end node and the transmitting end node. Matching.

The reception of the candidate signals may be periodic, and accordingly, the transmission of the candidate signals may also be periodic. In each cycle, a node can send or receive candidate signals as needed. Or, a node first determines whether it needs to change its physical layer parameter configuration, and the judgment may be based on a change in traffic demand and/or service channel transmission quality, for example, changing a subframe ratio or a service according to uplink and downlink traffic demand requirements. Significant deterioration in channel transmission quality results in the need to change the subframe ratio and/or carrier frequency and the like. That is, when a node determines that it needs to change its physical layer parameter configuration, it can receive the candidate signal to select a new physical layer parameter configuration according to the received at least one candidate signal. Alternatively, a node may also determine whether it needs to change its physical layer parameter configuration during the process of periodically receiving or transmitting a candidate signal. Specifically, in the receiving time or the sending time in each cycle, optionally, the receiving time and the sending time may be the same time, and a node may first determine whether the physical layer parameter configuration needs to be changed, and the determining basis may be The traffic demand and/or the quality of the traffic channel transmission has changed. When a node determines that it is not necessary to change its physical layer parameter configuration, the corresponding candidate signal may be transmitted according to the currently used physical layer parameter configuration at the transmission timing of the candidate signal period. For a node that does not need to change its physical layer parameter configuration, it is also possible to periodically receive candidate signals through a configured larger period to help it select whether a more suitable physical layer parameter configuration is used for wireless communication. Larger periods can be configured for the same or different values for different nodes. When a node judges that the physical layer parameter configuration needs to be changed, the candidate signal may be received at the receiving moment of the next one or more candidate signal periods, and a new physical layer parameter configuration is selected according to the received candidate signal receiving strength. Thereafter, the corresponding candidate signal may be transmitted according to the new physical layer parameter configuration at the transmission timing of the period of the candidate signal. In addition, when a node has no traffic to transmit, the reception or transmission of the candidate signal may not be performed.

 In one embodiment, a plurality of neighboring nodes may be time synchronized and configured to transmit the same period for transmitting and receiving the candidate signals.

 Specifically, for a node, whether it is to receive or transmit a candidate signal can also be configured by the central node, or a node having a candidate signal receiving or transmitting capability always activates the function. When the central node configures whether a node performs reception or transmission of a candidate signal, the node may first report to the central node whether it has the capability of receiving or transmitting the candidate signal.

 That is, the network node can periodically receive at least one candidate signal from one or more neighboring nodes. Alternatively, after determining that the physical layer parameter configuration needs to be changed according to a service requirement and/or a change of a traffic channel transmission quality, and then receiving at least one candidate signal from one or more neighboring nodes, where the service requirement is up and down The proportion of line business and/or the size of the business volume is related.

 It may be understood that the received at least one candidate signal may include one or more candidate signal groups, each candidate signal group may include one candidate signal; or each candidate signal group may also include N candidate signals, where N is greater than 1 A positive integer, and the N candidate signals respectively correspond to different resource utilization rates. For example, the node's resource utilization is 0, 50%, and 100%, and the corresponding business load can be divided into three levels: 0, 1/2, and 1. Similarly, the traffic load can be divided into corresponding levels according to different resource utilization rates. When a candidate signal group includes N candidate signals and N is a positive integer greater than 1, different candidate signals within the same candidate signal group may also pass at least one of the occupied time domain, frequency domain, and code domain resources. distinguish.

Therefore, in addition to establishing a correspondence relationship with at least one of a subframe ratio and a carrier frequency, the candidate signal group can also establish a corresponding relationship with the service load of the node at the same time. As described above, in the case where the traffic load is level 0, it indicates that the node has no traffic to transmit, and the candidate signal may not be received or transmitted, so the corresponding candidate signal may not be defined. In this case, taking a single-carrier TDD system as an example, H殳 supports the 7-seed frame ratio shown in Table 1, and then 14 candidate signal groups can be defined, each candidate signal group corresponding to one subframe ratio and one service load. A combination of levels. That is to say, multiple candidate signals in one candidate signal group may correspond to the same physical layer parameter configuration, but respectively correspond to different traffic load conditions. At this time, when a node needs to send a candidate signal At the time of the protection slot, a candidate signal corresponding to the physical layer parameter configuration and resource utilization used by the current wireless communication is transmitted to one or more neighboring nodes.

 Step 12: Determine a physical layer parameter configuration for wireless communication according to the at least one candidate signal.

 For example, a physical layer parameter configuration for wireless communication is determined based on a relationship between a received strength of at least one candidate signal in the at least one candidate signal group and a received strength threshold. Here, the reception strength may be the received power of the candidate signal or the quantized received power level. In addition to determining the physical layer parameter configuration for wireless communication according to the relationship between the reception strength of the candidate signal group and the reception strength threshold value, the correlation may be obtained according to the correlation between the received candidate signal and the locally stored candidate signal. The relationship between the value and the correlation value threshold determines the physical layer parameter configuration for wireless communication, or determines the physical layer parameter configuration for wireless communication based on the candidate signal having the largest correlation value.

 After receiving the candidate signal, the node as the receiving end receives the candidate signal strength indicating the total number of neighboring nodes or nodes that may be subjected to wireless communication using the corresponding subframe ratio on the carrier of the corresponding frequency. The level of interference intensity. When receiving at least one candidate signal from one or more neighboring nodes, there may be multiple neighboring nodes using the same physical layer parameter configuration for wireless communication, and when there is a corresponding relationship between the candidate signal and the resource utilization, It is assumed that the plurality of neighboring nodes also have the same resource utilization, and at this time, the plurality of neighboring nodes transmit the same candidate signal on the same time domain, frequency domain and code domain resources. Therefore, after the receiving node receives a candidate signal, the receiving strength of the candidate signal indicates the total interference level caused by the neighboring node configured by the corresponding physical layer parameter to the communication of the node.

For the sake of convenience, a specific example is given by taking the base station of the candidate signal and the node of the transmitting end as base stations. For the case where the receiving end and the transmitting end of the candidate signal are UEs, or both the base station and the UE are included. The principle of this example is also applicable. When a base station wants to change the carrier frequency and/or the subframe ratio used by the base station to communicate with the served UE, it first receives the candidate signal transmitted by the surrounding base station, and acquires the carrier frequency used by the surrounding base station by using the received candidate signal. And/or subframe ratio, and the interference strength that may be caused by communication with the base station. For example, the case where the candidate signal set includes seven different candidate signal groups, and each candidate signal group corresponds to a different subframe ratio in Table 1, for example, when the base station A needs to change according to the service requirements of the UE it serves. When the subframe ratio is matched, the candidate signal can be received on the GP resource of the special subframe, and the base station that does not need to change the subframe ratio around the base station according to the subframe ratio used by itself can be sent on the GP resource of the special subframe. The used subframes are matched to the corresponding candidate signals. For base stations that use the same subframe ratio, they will send the same specific candidate signal on the GP resources of the special subframe, so after receiving a specific candidate signal, the base station A can obtain all the surrounding uses corresponding to the specific candidate signal. The interference caused by the base station matched by the base station to the base station.

 For multi-carrier systems, for the sake of simplicity, the candidate signals can be concentrated on one carrier for transmission. For example, it is assumed that there are 10 20 MHz TDD carriers at 3.5 GHz to 3.7 GHz, and each carrier can be supported in Table 1. The 7 seed frame ratios are switched between the illustrated, then 70 candidate signals can be defined, each candidate signal is wirelessly communicated using a specific subframe ratio on a specific TDD carrier, and 70 candidate signals can be used. Both are concentrated on the 20 MHz TDD carrier of 3.50 GHz to 3.52 GHz for transmission.

 Specifically, when the node as the receiving end selects a physical layer parameter configuration according to the received at least one set of candidate signals, one or more threshold values, for example, a threshold value of the receiving strength, may be set for the candidate signal group and / or the threshold value of the relevant value.

 Optionally, when the candidate signal group includes N candidate signals and N is a positive integer greater than 1, determining physical layer parameters used for wireless communication according to a relationship between a received strength of the candidate signal group and a received strength threshold. The configuration may be one of the following manners: determining, according to a relationship between a received strength of a candidate signal corresponding to a resource utilization rate of a node that receives the candidate signal and a received strength threshold value, according to the received at least one candidate signal group. Physical layer parameter configuration for wireless communication; or determining, according to the received sum, maximum value, minimum value, or average value of the received strengths of the candidate signals in the at least one candidate signal group, and the received intensity threshold value Physical layer parameter configuration for wireless communication.

 The following describes the relationship between the received strength of the candidate signal and the received strength threshold as an example. It should be noted that the principle of the example is determined for any relationship according to the received candidate signal and the receiving threshold. The physical layer parameter configuration of the communication is applicable.

In one example, a threshold X is set for the received strength of at least one candidate signal group. When the reception strength of the at least one candidate signal group does not exceed the threshold value X, indicating that other base stations and/or UEs configured using physical layer parameters corresponding to the at least one candidate signal group do not have a receiving end node of the candidate signal Communication with little interference or interference; when the received strength of the at least one candidate signal group exceeds the threshold X, indicating other base stations and/or UEs configured using physical layer parameters corresponding to the at least one candidate signal group It interferes with the communication of the receiving node of the candidate signal. When the received strength of the at least one candidate signal group does not exceed the threshold X, according to the service Need to choose a physical layer parameter configuration. When the reception strength of the at least one candidate signal group exceeds the threshold value X, a corresponding physical layer parameter configuration may be selected from the candidate signal groups whose reception strength exceeds the threshold value X according to service requirements, or the reception strength may be selected. Maximum and exceeded the threshold

The physical layer parameter configuration corresponding to the candidate signal group of X. When there are multiple candidate signal groups whose received strength exceeds X, the interference can be further reduced by limiting the resources used by the wireless communication. For example, when the base station A receives the strength of two candidate signal groups exceeding X and corresponds to the subframe ratio 1 and the subframe ratio 2 in Table 1, respectively, it is considered that strong interference only occurs in subframes with different transmission directions. Then, the subframe ratio 1 or the subframe ratio 2 can be used to communicate with the UE served by itself, and the subframe 3 and the subframe 8 are not scheduled (as shown in Table 1, the subframe ratio 1 and the subframe match) 2 is different only in the uplink and downlink configuration of subframe 3 and subframe 8), that is, the resources used for wireless communication are limited to subframe 0, subframe 1, subframe 2, subframe 4, subframe 5, subframe 6, Subframe 7 and subframe 9. Since in subframe 0, subframe 1, subframe 2, subframe 4, subframe 5, subframe 6, subframe 7, and subframe 9, base station A and surrounding use subframe ratio 1 or subframe ratio 2 The transmission direction of the base station or UE is always the same, and there is no strong interference caused by different transmission directions. When the candidate signal has a corresponding relationship with the resource utilization, if the resource utilization indicates that the traffic load is not full, the subframes with the same transmission direction and the same neighboring node can be preferentially used in the scheduling.

In another example, two threshold values XI and X2 are set for the received intensity of at least one candidate signal group, and XI is less than X2. When the reception strength of the at least one candidate signal group does not exceed the threshold value XI, it indicates that other base stations or UEs configured using the physical layer parameters corresponding to the at least one candidate signal group do not interfere or interfere with the communication of the candidate signal receiving end. Small; when the received strength of the at least one candidate signal group exceeds the threshold XI but does not exceed the threshold X2, indicating that other base stations or UEs using the physical layer parameter configuration corresponding to the at least one candidate signal group are candidates The communication at the signal receiving end generates a certain degree of interference, but the interference is in an acceptable range; when the received strength of the at least one candidate signal group exceeds the threshold value X2, indicating that the physical layer parameter configuration corresponding to the at least one candidate signal group is used Other base stations or UEs may generate strong interference to the communication of the candidate signal receiving end, and need to communicate with the physical layer parameter configuration corresponding to the at least one candidate signal group to avoid uplink and downlink interference. Correspondingly, when the reception strength of the at least one candidate signal group does not exceed the threshold XI, a physical layer parameter configuration is selected according to service requirements. When the reception strength of one of the at least one candidate signal group exceeds XI, the reception strength of at least another group does not exceed XI, and the reception strength of all candidate signal groups does not exceed the threshold X2, the reception is received according to the service demand. Select a corresponding physical layer parameter in the candidate signal group whose strength does not exceed XI. Set. When the received strength of all candidate signal groups exceeds XI and does not exceed X2, a physical layer parameter configuration is selected according to service requirements. When the reception strength of the at least one candidate signal group exceeds X2, a corresponding physical layer parameter configuration may be selected from the candidate signal groups whose reception strength exceeds the threshold value X2 according to service requirements, or the reception intensity is selected to be the largest and exceeds The physical layer parameter configuration corresponding to the candidate signal group of the threshold value X2. When the received strength of a plurality of candidate signal groups exceeds X2, the interference can be further reduced by limiting the resources used by the wireless communication. For example, when the receiving strength of the two candidate signal groups received by the base station A exceeds X2 and corresponds to the subframe ratio 1 and the subframe ratio 2 in Table 1, respectively, it is considered that the strong interference command appears in the subframes with different transmission directions. Then, the subframe ratio 1 or the subframe ratio 2 can be used to communicate with the UE served by itself, and the subframe 3 and the subframe 8 are not scheduled (for the same reason), that is, the resources used for the wireless communication are limited to the child. Frame 0, Subframe 1, Subframe 2, Subframe 4, Subframe 5, Subframe 6, Subframe 7, and Subframe 9. Since in subframe 0, subframe 1, subframe 2, subframe 4, subframe 5, subframe 6, subframe 7, and subframe 9, base station A and surrounding use subframe ratio 1 or subframe ratio 2 The transmission direction of the base station or UE is always the same, and there is no strong interference caused by different transmission directions. When the candidate signal has a corresponding relationship with the resource utilization rate, if the resource utilization indicates that the traffic load is not full, the subframes with the same transmission direction and the same neighboring node may be preferentially used in the scheduling.

As mentioned earlier, business needs are related to the proportion of upstream and downstream business and/or the volume of business. When the physical layer parameter configuration is selected according to the service requirement, the carrier with the appropriate bandwidth may be selected according to the traffic volume, and/or the appropriate subframe ratio may be selected according to the uplink and downlink traffic ratio. Taking the LTE system as an example, when the appropriate subframe ratio is selected according to the proportion of uplink and downlink services, when the ratio of uplink and downlink services is a: b, the ratio of the spectral efficiency of the downlink transmission to the spectral efficiency of the uplink transmission can be determined. , determining that the most suitable subframe ratio is the number of uplink subframes: the number of downlink subframes = ( axc ): b , then the most suitable sub-selection can be selected from the 7-seed frame ratio shown in Table 1. The subframe ratio in which the frame ratio is close is used for wireless communication. For example, the ratio of the uplink and downlink services is 4:1, and the spectral efficiency of the downlink transmission is twice the spectral efficiency of the uplink transmission. Then, the most suitable subframe matching ratio uplink subframe number is determined: the number of downlink subframes=1: 2 According to this, the subframe ratio 1 or the subframe ratio 3 can be selected from Table 1 for wireless communication. After determining the physical layer parameter configuration for wireless communication, the physical layer parameter configuration can be reported to the central node. For example, if it is determined that the node configured by the physical layer parameter is a UE, the UE may report the physical layer parameter configuration to its serving base station or macro base station. If the node configured to determine the physical layer parameter is a base station, the base station sends the macro base station to the base station. The controller or core network device reports the physical layer parameter configuration. Alternatively, the network node may send a candidate signal corresponding to the physical layer parameter configuration to one or more neighboring nodes. For example, after determining the physical layer parameter configuration for wireless communication, the network node may periodically send candidate signals corresponding to the physical layer parameter configuration to one or more neighboring nodes, so as to timely configure its own physical layer parameters. The neighboring nodes are told in the form of candidate signals. When each candidate signal group includes N candidate signals and N is a positive integer greater than 1, the network node may determine a corresponding candidate signal group according to the physical layer parameter configuration of the network node, and when transmitting the candidate signal, the network node may send All or part of the candidate signals in the candidate signal group, for example, only one candidate signal corresponding to its own resource utilization in the candidate signal group is transmitted.

 Alternatively, the physical layer parameter configuration can also be used for wireless communication. For the base station, the determined physical layer parameter configuration may be used to perform wireless communication with the UE it serves; or the base station reports the physical layer parameter configuration determined by itself to the central node (for example, the macro base station), and then the central node receives the received The physical layer parameter configuration of the multiple base stations is configured to determine a physical layer parameter configuration, and then the central node notifies the base station of the determined physical layer parameter configuration, so that the base station performs the physical layer parameter configuration determined by the central node and the base station. Wireless communication. For the UE, the determined physical layer parameter configuration may be used to perform wireless communication with the serving base station; or the other UE may perform wireless terminal and terminal (D2D, Device to Device) communication; or the UE may configure the physical layer parameter determined by itself. Reporting to the central node (for example, the serving base station), and then the central node determines a physical layer parameter configuration according to the received physical layer parameter configuration of the multiple UE reports, and then notifies the service of the determined physical layer parameter configuration to the service. The UE, in order for the UE to perform wireless communication with the base station using the physical layer parameter configuration decided by the central node.

 For example, after selecting the physical layer parameter configuration, the node uses the corresponding physical layer parameter configuration for wireless communication. For example, when a base station selects to use the subframe ratio 1 according to the reception strength of the candidate signal, the base station can perform wireless communication with the UE according to the division of the downlink subframe, the special subframe, and the uplink subframe in the subframe ratio 1.

 It can be seen that the embodiment of the present invention sets an appropriate physical layer parameter configuration by intercepting a specific signal before adaptively changing the physical layer parameter configuration in the wireless communication system, thereby avoiding interference to surrounding cells.

 2 shows a flow chart of a method of wireless communication in accordance with another embodiment of the present invention. The part of the method shown in Fig. 2 corresponding to the method shown in Fig. 1 will not be described again. A method of wireless communication according to another embodiment of the present invention includes the following steps:

Step 21: The first node is configured according to physical layer parameters of the first node, and the physical The correspondence between the layer parameter configuration and the candidate signal group determines the candidate signal group.

 Step 22: The first node sends at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 The candidate signal group may include one candidate signal; and may also include N candidate signals, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to different resource utilization rates.

 The candidate signal includes one of the following sequences: a sequence used for the synchronization signal, a dolphoff-dividing sequence, and a sequence obtained by truncating, cyclically expanding, or puncturing based on the zardorf-division sequence. The candidate signal is distinguished by at least one of a time domain occupied by the sequence, a frequency domain occupied, and a code domain resource occupied.

 Optionally, the first node may send at least one candidate signal included in the candidate signal group to one or more neighboring nodes in a guard slot.

 Furthermore, the first node may also periodically transmit at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 Here, the first node includes one of a base station and a user equipment; and the neighboring node includes one of a base station and a user equipment.

 It can be seen that the embodiment of the present invention sets an appropriate physical layer parameter configuration by intercepting a specific signal before adaptively changing the physical layer parameter configuration in the wireless communication system, thereby avoiding interference to surrounding cells.

 FIG. 3 illustrates an apparatus for wireless communication in accordance with an embodiment of the present invention. The description of the method shown in Fig. 1 is repeated and will not be described again.

 As shown in FIG. 3, the apparatus 30 for wireless communication includes a receiving unit 31 and a determining unit 32. The receiving unit 31 is configured to receive at least one candidate signal from one or more neighboring nodes, where the at least one candidate signal includes at least one candidate signal group, where the candidate signal group corresponds to a physical layer parameter configuration, where The physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency. The determining unit 32 is configured to determine a physical layer parameter configuration for wireless communication based on the at least one candidate signal group.

 It can be understood that the candidate signal group may include one candidate signal; N candidate signals may also be included, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to different resource utilization rates.

In general, the candidate signal is in the form of a sequence, for example, the candidate signal may be a synchronous signal. The sequence used, the zaffo-sequence sequence, or the sequence obtained by truncation, cyclic expansion or puncturing based on the zaldorf-division sequence, and so on. Then, the candidate signal can be further distinguished by at least one of a time domain occupied by the sequence, an occupied frequency domain, and an occupied code domain resource.

 Generally, the correspondence between the candidate signal group and the physical layer parameter configuration is configured in the at least one neighboring node, or the correspondence between the candidate signal group and the physical layer parameter configuration is notified by the central node to the Said at least one adjacent node.

 In general, the candidate signal is configured at the at least one neighboring node, or the candidate signal is notified by the central node to the at least one neighboring node. The neighboring node may be a base station or a user equipment.

 Optionally, the receiving unit 31 is specifically configured to receive at least one candidate signal from one or more neighboring nodes in the guard slot.

 Optionally, the receiving unit 31 is specifically configured to periodically receive at least one candidate signal from one or more neighboring nodes.

 Optionally, the determining unit 32 is further configured to: before the receiving the at least one candidate signal from the one or more neighboring nodes, determining, according to the service requirement and/or the change of the transmission quality of the traffic channel, determining that the physical layer parameter needs to be changed. The configuration, wherein the service requirement is related to an uplink and downlink service ratio and/or a traffic volume.

 Optionally, the determining unit 32 is configured to determine a physical layer parameter configuration for wireless communication according to a relationship between a received strength of the at least one candidate signal group and a received strength threshold. Here, the reception strength of the at least one candidate signal group may be a sum, a maximum value, a minimum value, or an average value of reception strengths of candidate signals in the at least one candidate signal group, or in the at least one candidate signal group The received strength of the candidate signal corresponding to the resource utilization of the receiving node.

 For example, the determining unit 32 is configured to determine a physical layer parameter configuration for wireless communication according to a service requirement when a received strength of the at least one candidate signal group is less than or equal to a first received strength threshold; or When the received strength of the at least one candidate signal group is greater than the first received strength threshold, the physical layer parameter configured for the wireless communication is configured to be the physical layer parameter configuration corresponding to the candidate signal group with the highest receiving strength, or according to the service requirement. A physical layer parameter configuration for wireless communication is determined based on a candidate signal group having a received strength greater than the first received strength threshold.

For example, the determining unit 32 is configured to determine a physical layer parameter configuration for wireless communication according to a service requirement when a received strength of the at least one candidate signal group is less than or equal to a second receiving strength threshold; or The reception strength of the first candidate signal group in at least one candidate signal group is large And the second received intensity threshold is less than or equal to the third received intensity threshold, and the received strength of the second candidate signal group in the at least one candidate signal group is less than the second received intensity threshold And the second receiving strength threshold value is smaller than the third receiving strength threshold value, and is determined according to a service requirement and according to a candidate signal group whose receiving strength is smaller than the second receiving strength threshold value, for wireless communication. Physical layer parameter configuration; or, when the received strength of the at least one candidate signal group is greater than the second receiving strength threshold, and both are less than or equal to a third receiving strength threshold, wherein the second receiving The strength threshold is less than the third reception strength threshold, and the physical layer parameter configuration for wireless communication is determined according to the service requirement; or, when the reception strength of at least one of the at least one candidate signal group is greater than Determining, by the third receiving strength threshold, a physical layer parameter configured for wireless communication as a physical layer corresponding to a candidate signal group having the highest receiving strength Configuration number, or based on business needs and said third set of candidate signal reception intensity threshold value is greater than the reception strength is determined according to a physical layer parameter of a wireless communication configuration.

 Further, as shown in FIG. 4, in addition to the receiving unit 31 and the determining unit 32, the apparatus 40 for wireless communication may further include a transmitting unit 33. The transmitting unit 33 is configured to report the determined physical layer parameter configuration for wireless communication to the central node; or send, to the one or more neighboring nodes, a candidate corresponding to the determined physical layer parameter configuration for wireless communication Signal group.

 Alternatively, as shown in FIG. 4, the apparatus 40 for wireless communication may further include a communication unit 34. Communication unit 34 is operative to communicate wirelessly using the physical layer parameter configuration for wireless communication.

 It can be seen that, in the embodiment of the present invention, before the physical layer parameter configuration is adaptively changed in the wireless communication system, an appropriate physical layer parameter configuration is set by listening to a specific signal, thereby avoiding interference to surrounding cells.

 It should be understood that the apparatus for wireless communication in the embodiment of the present invention may be a network node such as a base station or a UE. FIG. 5 illustrates an apparatus for wireless communication in accordance with an embodiment of the present invention. The description of the method shown in Fig. 2 is repeated and will not be described again.

 As shown in FIG. 5, the apparatus 50 for wireless communication includes a determination module 51 and a transmission module 52. The determining module 51 may determine the candidate signal group according to the physical layer parameter configuration of the first node, and the corresponding relationship between the physical layer parameter configuration and the candidate signal group. The transmitting module 52 may transmit, to one or more neighboring nodes, at least one candidate signal included in the candidate signal group determined by the determining module.

The candidate signal group includes one candidate signal; or the candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to Same resource utilization.

 Optionally, the sending module 52 is specifically configured to: in the protection slot, the first node sends the at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 Optionally, the sending module 52 is specifically configured to periodically send the at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

 The candidate signal includes one of the following sequences: a sequence used by the synchronization signal, a rab-divide sequence, and a sequence obtained by truncating, cyclically expanding, or puncturing based on the zaffowski-dividing sequence. In addition, the candidate signal is distinguished by at least one of a time domain occupied by the sequence, a frequency domain occupied, and a occupied code resource.

 Apparatus 50 includes one of a base station and a user equipment.

 For other functions of the above device, please refer to the above method embodiment.

 Figure 6 is a schematic block diagram of user equipment 60 of the present invention. User equipment 60 includes a receiver 61 and a processor 62. In the embodiment of the present application, the receiver 61 is configured to receive at least one candidate signal from one or more neighboring nodes, where the at least one candidate signal includes at least one candidate signal group, and the candidate signal group corresponds to one physical layer parameter. The configuration, wherein the physical layer parameter configuration includes at least one of a configuration of a subframe ratio and a configuration of a carrier frequency. The processor 62 is configured to determine a physical layer parameter configuration for wireless communication based on the at least one candidate signal group.

 For other functions of the user equipment, please refer to the above method embodiment.

 Figure 7 is a schematic block diagram of user equipment 70 of the present invention. User equipment 70 includes a processor 71 and a transmitter 72. In the embodiment of the present application, the processor 71 is configured to determine a candidate signal group according to a physical layer parameter configuration of the first node, and a correspondence between the physical layer parameter configuration and a candidate signal group. The transmitter 72 is configured to transmit, to one or more neighboring nodes, at least one candidate signal included in the candidate signal group determined by the processor 71.

 For other functions of the user equipment, please refer to the above method embodiment.

 It should be understood that in the embodiment of the present invention, the term "and/or" is merely an association describing the associated object, indicating that there may be three relationships. For example, A and / or B, can mean: There are three cases of A, B and A and B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that the aspects described in each of the claims of the present invention are also considered as an embodiment, and the features in the claims may be combined, as the steps of the different branches of the execution after the determining step in the present invention. It can be used as a different embodiment. Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

 It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. . The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

1. A wireless communication method, characterized by: including:

Receive at least one candidate signal from one or more neighboring nodes, the at least one candidate signal includes at least one candidate signal group, the candidate signal group corresponds to a physical layer parameter configuration, wherein the physical layer parameter configuration includes a subframe At least one of a matching configuration and a carrier frequency configuration; determining a physical layer parameter configuration for wireless communication according to the at least one candidate signal group.

2. The method according to claim 1, characterized in that,

The candidate signal group includes one candidate signal; or

The candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to different resource utilization rates.

3. The method according to claim 1 or 2, characterized in that receiving at least one candidate signal from one or more neighboring nodes includes:

In the guard slot, at least one candidate signal is received from one or more neighboring nodes.

4. The method according to any one of claims 1 to 3, characterized in that, before receiving at least one candidate signal from one or more neighboring nodes, it further includes:

According to changes in service requirements and/or service channel transmission quality, it is determined that the physical layer parameter configuration needs to be changed.

5. The method according to claim 4, characterized in that the business demand is related to the ratio of uplink and downlink services and/or the size of the business volume.

6. The method according to any one of claims 1 to 5, characterized in that receiving at least one candidate signal from one or more neighboring nodes includes:

At least one candidate signal is periodically received from one or more neighboring nodes.

7. The method according to any one of claims 1 to 6, characterized in that: determining the physical layer parameter configuration for wireless communication according to the at least one candidate signal group includes: according to the at least one candidate signal group The relationship between the received strength of the candidate signal group and the received strength threshold determines the physical layer parameter configuration for wireless communication.

8. The method according to claim 7, characterized in that, the reception intensity of the candidate signal group is the sum, maximum value, minimum value or average value of the reception intensity of the candidate signals in the candidate signal group, or is The reception strength of the candidate signals in the candidate signal group corresponding to the resource utilization of the node receiving the candidate signal.

9. The method according to claim 7 or 8, wherein determining the physical layer parameter configuration for wireless communication according to the relationship between the received intensity of the at least one candidate signal group and the received intensity threshold includes: :

When the reception intensity of the at least one candidate signal group is less than or equal to the first reception intensity threshold, determine the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of the at least one candidate signal group is greater than the first reception strength threshold, it is determined that the physical layer parameter configuration used for wireless communication is the physical layer parameter configuration corresponding to the candidate signal group with the largest reception strength, or according to business requirements and determine the physical layer parameter configuration for wireless communication according to the candidate signal group whose reception intensity is greater than the first reception intensity threshold.

10. The method according to claim 7 or 8, wherein determining the physical layer parameter configuration for wireless communication according to the relationship between the received intensity of the at least one group of candidate signals and the received intensity threshold includes: :

When the reception intensity of the at least one candidate signal group is less than or equal to the second reception intensity threshold, determine the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of the first candidate signal group in the at least one candidate signal group is greater than the second reception strength threshold and less than or equal to the third reception strength threshold, and the reception strength of the first candidate signal group in the at least one candidate signal group When the reception intensity of the second candidate signal group is less than the second reception intensity threshold, wherein the second reception intensity threshold is less than the third reception intensity threshold, according to business requirements and according to the reception intensity being less than the The candidate signal group of the second reception intensity threshold value determines the physical layer parameter configuration for wireless communication; or,

When the reception strengths of the at least one candidate signal group are both greater than the second reception strength threshold, and are less than or equal to the third reception strength threshold, wherein the second reception strength threshold is less than the The third reception intensity threshold value determines the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of at least one candidate signal group in the at least one candidate signal group is greater than the third reception strength threshold, it is determined that the physical layer parameters used for wireless communication are configured to correspond to the candidate signal group with the largest reception strength. Physical layer parameter configuration, or determining physical layer parameter configuration for wireless communication according to business requirements and according to a candidate signal group whose reception intensity is greater than the third reception intensity threshold.

11. The method according to any one of claims 1 to 10, further comprising: reporting the determined physical layer parameter configuration for wireless communication to a central node.

12. The method according to any one of claims 1 to 11, further comprising: sending the determined physical layer parameter configuration for wireless communication to the one or more neighboring nodes. candidate signal group.

13. The method according to any one of claims 1 to 12, further comprising: performing wireless communication using the physical layer parameter configuration for wireless communication.

14. The method according to any one of claims 1 to 13, characterized in that the candidate signal includes one of the following sequences:

Sequences used in synchronization signals, Zaddoff-dividing sequences, and sequences obtained by truncation, cyclic expansion, or puncturing based on Zaddoff-dividing sequences.

15. The method according to claim 14, characterized in that,

The candidate signals are distinguished by at least one of the time domain occupied by the sequence, the frequency domain occupied, and the code resources occupied.

16. The method according to any one of claims 1 to 15, characterized in that the corresponding relationship between the candidate signal group and the physical layer parameter configuration is configured in the at least one adjacent node, or

The corresponding relationship between the candidate signal group and the physical layer parameter configuration is notified by the central node to the at least one adjacent node.

17. The method according to any one of claims 1 to 16, characterized in that the at least one candidate signal group belongs to a candidate signal set;

The candidate signal set is configured at the at least one adjacent node, or

The set of candidate signals is notified by the central node to the at least one neighboring node.

18. The method according to any one of claims 1 to 17, characterized in that the adjacent node is a base station or user equipment.

19. A wireless communication method, characterized by including:

The first node determines the candidate signal group according to the physical layer parameter configuration of the first node and the correspondence between the physical layer parameter configuration and the candidate signal group;

The first node sends at least one candidate signal included in the candidate signal group to one or more neighboring nodes.

20. The method according to claim 19, characterized in that,

The candidate signal group includes one candidate signal; or

The candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and The N candidate signals respectively correspond to different resource utilization rates.

21. The method according to claim 19 or 20, wherein the first node sends at least one candidate signal included in the candidate signal group to one or more neighboring nodes, including: in a guard time slot , the first node sends at least one candidate signal included in the candidate signal group to one or more adjacent nodes.

22. The method according to any one of claims 19 to 21, characterized in that the first node sends at least one candidate signal included in the candidate signal group to one or more adjacent nodes, including:

The first node periodically transmits at least one candidate signal included in the candidate signal group to one or more adjacent nodes.

23. The method according to any one of claims 19 to 22, characterized in that the candidate signal includes one of the following sequences:

Sequences used in synchronization signals, Zaddoff-dividing sequences, and sequences obtained by truncation, cyclic expansion, or puncturing based on Zaddoff-dividing sequences.

24. The method according to any one of claims 19 to 23, characterized in that the candidate signal passes through at least one of the time domain occupied by the sequence, the occupied frequency domain and the occupied code resources. species to differentiate.

25. The method according to any one of claims 19 to 24, characterized in that the first node includes one of a base station and user equipment;

The neighboring node includes one of a base station and a user equipment.

26. A wireless communication device, characterized by including:

A receiving unit, configured to receive at least one candidate signal from one or more adjacent nodes, the at least one candidate signal including at least one candidate signal group, the candidate signal group corresponding to a physical layer parameter configuration, wherein the physical layer The parameter configuration includes at least one of subframe configuration and carrier frequency configuration;

The determining unit determines the physical layer parameter configuration for wireless communication according to the at least one candidate signal group.

27. The device according to claim 26, characterized in that the receiving unit is specifically used for:

In a guard slot, at least one candidate signal is received from one or more neighboring nodes.

28. The device according to claim 26 or 27, characterized in that, the receiving unit has Body used for:

At least one candidate signal is periodically received from one or more neighboring nodes.

29. The device according to any one of claims 26 to 28, characterized in that the determining unit is also used to:

Before receiving at least one candidate signal from one or more adjacent nodes, it is determined that the physical layer parameter configuration needs to be changed based on changes in service requirements and/or service channel transmission quality, where the service requirements are related to uplink and downlink Business proportion and/or business volume related.

30. The device according to any one of claims 26 to 29, characterized in that the determining unit is specifically used to:

Determine the physical layer parameter configuration for wireless communication according to the relationship between the received strength of the at least one candidate signal group and the received strength threshold, wherein the received strength of the at least one candidate signal group is the at least one candidate signal group The sum, maximum value, minimum value or average value of the reception strengths of the candidate signals in , or the reception strength of the candidate signals in the candidate signal group corresponding to the resource utilization of the node receiving the candidate signal.

31. The device according to claim 30, characterized in that the determining unit is specifically used to:

When the reception intensity of the at least one candidate signal group is less than or equal to the first reception intensity threshold, determine the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of the at least one candidate signal group is greater than the first reception strength threshold, it is determined that the physical layer parameter configuration used for wireless communication is the physical layer parameter configuration corresponding to the candidate signal group with the largest reception strength, or according to business requirements and determine the physical layer parameter configuration for wireless communication according to the candidate signal group whose reception intensity is greater than the first reception intensity threshold.

32. The device according to claim 30, characterized in that the determining unit is specifically used to:

When the reception intensity of the at least one candidate signal group is less than or equal to the second reception intensity threshold, determine the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of the first candidate signal group in the at least one candidate signal group is greater than the second reception strength threshold and less than or equal to the third reception strength threshold, and the reception strength of the first candidate signal group in the at least one candidate signal group When the reception intensity of the second candidate signal group is less than the second reception intensity threshold, where the second reception intensity threshold is less than the third reception intensity threshold, according to business requirements and according to the reception intensity being less than the The candidate signal group for the second reception intensity threshold value is determined for Physical layer parameter configuration for wireless communication; or,

When the reception strengths of the at least one candidate signal group are both greater than the second reception strength threshold, and are less than or equal to the third reception strength threshold, wherein the second reception strength threshold is less than the The third reception intensity threshold value determines the physical layer parameter configuration for wireless communication according to business requirements; or,

When the reception strength of at least one candidate signal group in the at least one candidate signal group is greater than the third reception strength threshold, it is determined that the physical layer parameters used for wireless communication are configured to correspond to the candidate signal group with the largest reception strength. Physical layer parameter configuration, or determining physical layer parameter configuration for wireless communication according to business requirements and according to a candidate signal group whose reception intensity is greater than the third reception intensity threshold.

33. The device according to any one of claims 26 to 32, further comprising a sending unit for:

Report the determined physical layer parameter configuration for wireless communication to the central node; or send a candidate signal group corresponding to the determined physical layer parameter configuration for wireless communication to the one or more adjacent nodes.

34. The device according to any one of claims 26 to 33, further comprising a communication unit for:

Wireless communication is performed using the physical layer parameter configuration for wireless communication.

35. The device according to any one of claims 26 to 34, characterized in that the candidate signal group includes one candidate signal; or

The candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to different resource utilization rates.

36. A wireless communication device, characterized by including:

Determining module, determines the candidate signal group according to the physical layer parameter configuration of the first node and the corresponding relationship between the physical layer parameter configuration and the candidate signal group;

A sending module, sending at least one candidate signal included in the candidate signal group determined by the determining module to one or more neighboring nodes.

37. The device according to claim 36, characterized in that,

The candidate signal group includes one candidate signal; or

The candidate signal group includes N candidate signals, where N is a positive integer greater than 1, and the N candidate signals respectively correspond to different resource utilization rates.

38. The device according to claim 36 or 37, characterized in that,

The sending module is specifically configured to send the first node to at least one candidate signal included in the candidate signal group to one or more neighboring nodes in the guard time slot.

39. The device according to any one of claims 36 to 38, characterized in that the sending module is specifically configured to periodically send at least one signal included in the candidate signal group to one or more adjacent nodes. candidate signal.

40. The device according to any one of claims 36 to 39, characterized in that the candidate signal includes one of the following sequences:

Sequences used in synchronization signals, Zaddoff-dividing sequences, and sequences obtained by truncation, cyclic expansion, or puncturing based on Zaddoff-dividing sequences.

41. The apparatus according to any one of claims 36 to 40, wherein the candidate signal passes through at least one of the time domain occupied by the sequence, the occupied frequency domain and the occupied code resources. species to differentiate.

42. The device according to any one of claims 36 to 41, characterized in that the device includes one of a base station and user equipment.

43. A network node, characterized by: including:

A receiver configured to receive at least one candidate signal from one or more adjacent nodes, the at least one candidate signal including at least one candidate signal group, the candidate signal group corresponding to a physical layer parameter configuration, wherein the physical layer The parameter configuration includes at least one of subframe configuration and carrier frequency configuration;

A processor, configured to determine a physical layer parameter configuration for wireless communication according to the at least one candidate signal group.

44. A network node, characterized by: including:

A processor configured to determine a candidate signal group according to the physical layer parameter configuration of the first node and the correspondence between the physical layer parameter configuration and the candidate signal group;

A transmitter configured to send at least one candidate signal included in the candidate signal group determined by the processor to one or more neighboring nodes.