WO2016176848A1 - 信号传输方法和网络设备 - Google Patents
信号传输方法和网络设备 Download PDFInfo
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- WO2016176848A1 WO2016176848A1 PCT/CN2015/078425 CN2015078425W WO2016176848A1 WO 2016176848 A1 WO2016176848 A1 WO 2016176848A1 CN 2015078425 W CN2015078425 W CN 2015078425W WO 2016176848 A1 WO2016176848 A1 WO 2016176848A1
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- 238000000034 method Methods 0.000 title claims abstract description 88
- 230000008054 signal transmission Effects 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims description 54
- 238000005259 measurement Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Substances C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1881—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with schedule organisation, e.g. priority, sequence management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0026—Division using four or more dimensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
Definitions
- the embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a signal transmission method and a network device.
- wireless communication With the development of wireless communication technology, the data transmission rate of wireless communication is getting higher and higher, and the spectrum resources currently used have become saturated. Therefore, wireless communication needs to use higher frequency spectrum resources, but the higher the frequency, the more the path loss Big.
- Massive Multiple-Input Multiple-Output (Massive MIMO) antennas can be used to form high antenna gains to compensate for path loss.
- Massive MIMO antenna many antennas are included, and each antenna forms a narrow beam to form a high antenna gain.
- the beam formed by each antenna may not cover all users in the cell.
- the embodiment of the invention provides a signal transmission method and a network device, which are used to improve the access success rate of the network device.
- the first aspect provides a signal transmission method, including:
- the first network device sends the first signal before performing cell selection
- the first network device sends a second signal after performing the cell selection, where the first network device sends the first signal and the resource used to send the second signal is different, and the second signal is Random access signal.
- the used resource Different including one of the following:
- the codeword resources used are different;
- the time resources used are different;
- the frequency resources used are different;
- the time-frequency resources used are different.
- the first network device sends the first signal before performing cell selection, including:
- the second network device of the cell belongs to the second network device group, and the first sequence group includes at least one sequence.
- the first sequence group is determined by using a multicast signal, where the multicast signal is the second network At least two second network devices in the device group are simultaneously transmitted.
- the first network device sends the first signal before performing cell selection, including:
- the first network device Determining, by the first network device, a sequence from the first sequence group as a sequence of the first signal before performing the cell selection, where the first sequence group is a specific identifier of the first network device Determining that the specific identifier comprises an IMSI or a TMSI.
- the first network device sends the first signal before performing cell selection, including:
- the first network device sends the A signal, including:
- the first network device transmits the first signal on a particular frequency domain resource prior to performing the cell selection.
- the specific frequency domain resource includes:
- the first network device sends the A signal, including:
- the first network device transmits the first signal on a specific time resource before performing the cell selection.
- the first network device sends the first signal on a specific time resource before performing the cell selection ,include:
- the first network device repeatedly sends the first signal in a first time period before performing the cell selection
- the method further includes the first network device stopping transmitting the first signal during a second time period, the first time period and the second time period being predefined.
- the first network device sends the first signal on a specific time resource before performing the cell selection ,include:
- the first network device fails to perform random access, and the first network device performs the cell selection, the first network device sends the first signal on a specific time resource;
- the method further includes:
- the first network device stops transmitting the first signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device sends the first signal before performing the cell selection and before detecting a synchronization signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device transmits the first signal before performing the cell selection and before detecting a broadcast signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device transmits the first signal before performing the cell selection and after detecting a synchronization signal, and detecting a broadcast signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device sends the first signal after performing the cell selection and after detecting a synchronization signal, and detecting a broadcast signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device sends the first signal before performing the cell selection and after measuring the common pilot signal.
- the first network device sends before performing cell selection
- the first signal includes:
- the first network device sends the first signal before performing the cell selection and after measuring the pilot signal.
- the first network device is performing the cell selection After sending the second signal, it also includes:
- the first network device receives at least one third signal sent by at least one second network device in the second network device group;
- the first network device performs the cell selection according to the at least one third signal.
- the first network device performs the cell selection according to the at least one third signal, include:
- the first network device measures the at least one third signal, and selects a cell provided by the second network device corresponding to the third signal with the best signal quality.
- the first signal and the second signal Orthogonal are configured to be any one of the possible implementations of the eighteenth possible implementation of the first aspect.
- the second aspect provides a signal transmission method, including:
- the second network device Receiving, by the second network device, a second signal that is sent by the first network device after performing the cell selection, where the second network device receives the first signal and uses a different resource for receiving the second signal And the second signal is a random access signal.
- the adopted resources are different, including one of the following:
- the codeword resources used are different;
- the time resources used are different;
- the frequency resources used are different;
- the time-frequency resources used are different.
- the second network device receives a first signal that is sent by the first network device before performing cell selection. Previously, it also included:
- the second network device Transmitting, by the second network device, a multicast signal to the first network device, where the multicast signal includes a first sequence group, where the first sequence group is specific to a second network device group to which the second network device belongs
- the first signal is selected from the first sequence group, and the first sequence group includes at least one sequence.
- the second network device receives the first network device Before performing the second signal sent after the cell selection, the method further includes:
- the second network device generates a third signal according to the first signal
- the second network device sends the third signal to the first network device, where the third signal is used to enable the first network device to perform the cell selection.
- the time-frequency resource that the second network device sends the third signal is variable.
- the period in which the second network device sends the third signal is variable.
- the method further includes:
- the second network device sends a fourth signal to the first network device, where the fourth signal is a broadcast signal.
- the time-frequency resource that the second network device sends the broadcast signal is variable.
- the period in which the second network device sends the broadcast signal is variable.
- the first signal and the second signal are orthogonal .
- the third aspect provides a network device, where the network device is a first network device, and the network device includes:
- a sending module configured to send a first signal before performing cell selection
- a processing module configured to perform cell selection
- the sending module is further configured to: after the processing module performs the cell selection, send a second signal, where the sending module sends the first signal and the resource used to send the second signal is different, and the The second signal is a random access signal.
- the used resources are different, including one of the following:
- the codeword resources used are different;
- the time resources used are different;
- the frequency resources used are different;
- the time-frequency resources used are different.
- a sending module configured to send, according to the sequence of the first sequence, a sequence from the first sequence group, before the processing module performs the cell selection, where the first sequence group provides the first network
- the second network device of the cell to be selected belongs to the second network device group, and the first sequence group includes at least one sequence.
- the first sequence group is determined by using a multicast signal, where the multicast signal is the second network At least two second network devices in the device group are simultaneously transmitted.
- the sending module is configured to determine a sequence from the first sequence group before the processing module performs the cell selection Transmitting as a sequence of the first signal, the first sequence group being determined by a specific identifier of the first network device, the specific identifier comprising an IMSI or a TMSI.
- the sending module is specifically configured to: before the processing module performs the cell selection, A sequence is determined in a sequence group to be transmitted as a sequence of the first signal, the first sequence group being predefined.
- the sending module is specifically used in the processing module
- the first signal is transmitted on a specific frequency domain resource before the cell selection is performed.
- the specific frequency domain resource includes:
- the sending module is specifically used in the processing module
- the first signal is transmitted on a particular time resource prior to performing the cell selection.
- the sending module is configured to be used in the first time period before the processing module performs the cell selection Repeatingly transmitting the first signal
- the sending module is further configured to stop sending the first signal during a second time period, where the first time period and the second time period are predefined.
- the sending module is specifically configured to: if the first network device fails to perform random access, and the first network device sends the foregoing time on a specific time resource before performing the cell selection a signal
- the sending module is further configured to stop sending the first signal if the first network device performs random access successfully.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and before detecting the synchronization signal.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and before detecting a broadcast signal.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and after detecting the synchronization signal, and before detecting the broadcast signal.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and after detecting the synchronization signal, and detecting the broadcast signal.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and after measuring the common pilot signal.
- the sending module is specifically used in the processing The module transmits the first signal before performing the cell selection and after measuring the pilot signal.
- the network device further includes:
- a receiving module configured to send, after the sending module performs the cell selection, a second signal Receiving, at least one third signal sent by at least one second network device in the second network device group;
- the processing module is specifically configured to perform the cell selection according to the at least one third signal.
- the processing module is configured to perform measurement on the at least one third signal, and select a signal quality A good third signal corresponds to a cell provided by the second network device.
- the first signal and the second signal Orthogonal are integers.
- the fourth aspect provides a network device, where the network device is a second network device, where the network device includes:
- a receiving module configured to receive a first signal that is sent by the first network device before performing cell selection, and receive a second signal that is sent by the first network device after performing the cell selection, where the receiving module receives the first The signal is different from the resource used to receive the second signal, and the second signal is a random access signal.
- the used resources are different, including one of the following:
- the codeword resources used are different;
- the time resources used are different;
- the frequency resources used are different;
- the time-frequency resources used are different.
- the network device further includes: a sending module, configured to receive, by the receiving module, the first network The device sends a multicast signal to the first network device, where the multicast signal includes a first sequence group, and the first sequence group is the second network, before the first signal sent before the cell selection is performed.
- the first signal is selected from the first sequence group, and the first sequence group includes at least one sequence.
- the network device further includes:
- a processing module configured to generate, after the receiving, the third signal sent by the first network device after performing the cell selection, generating a third signal according to the first signal
- the sending module is further configured to send the third signal to the first network device, where the third signal is used to enable the first network device to perform the cell selection.
- the time-frequency resource that the sending module sends the third signal is variable.
- the period in which the sending module sends the third signal is variable.
- the sending module is further used in the receiving module Receiving, by the first network device, a fourth signal, where the fourth signal is a broadcast signal, before the second signal sent after performing the cell selection.
- the time-frequency resource that the sending module sends the broadcast signal is variable.
- the period in which the sending module sends the broadcast signal is variable.
- the first signal and the second signal are orthogonal .
- the first network device sends the first signal by performing the cell selection, and sends the second signal after performing the cell selection, where the first network device sends the first signal and
- the second network device can obtain the related information of the first network device by using the second network device that provides the network access capability, so that the second network device can be configured according to the different resources.
- the related information of the first network device sends information that helps the first network device to perform cell selection to the first network device, thereby improving the success rate of the first network device for performing cell selection, thereby improving access of the first network device. Success rate.
- FIG 1 shows the initial access procedure of LTE
- Embodiment 1 of a signal transmission method according to an embodiment of the present invention
- FIG. 3 is a flowchart of Embodiment 2 of a signal transmission method according to an embodiment of the present disclosure
- Embodiment 4 is a flowchart of Embodiment 3 of a signal transmission method according to an embodiment of the present invention.
- FIG. 5 is a flowchart of Embodiment 4 of a signal transmission method according to an embodiment of the present disclosure
- FIG. 6 is a schematic structural diagram of Embodiment 1 of a network device according to an embodiment of the present disclosure.
- FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device according to an embodiment of the present disclosure.
- FIG. 8 is a schematic structural diagram of Embodiment 3 of a network device according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of Embodiment 4 of a network device according to an embodiment of the present disclosure.
- FIG. 10 is a schematic structural diagram of Embodiment 5 of a network device according to an embodiment of the present disclosure.
- FIG. 1 is an initial access procedure of LTE.
- the base station transmits a synchronization signal.
- the UE obtains timing synchronization and a cell identity (ID) according to the synchronization signal.
- the UE obtains the location of the Cell Reference Signal (CRS) according to the cell ID, and performs measurement of Reference Signal Receiving Power (RSRP), thereby performing cell primary selection, and camping at the beginning.
- CRS Cell Reference Signal
- step S104 the UE performs detection of a broadcast channel and a system message according to the CRS, and obtains a system message of the cell.
- step S105 the UE initiates random access and sends a random access signal to the base station.
- step S106 the base station processes the random access request sent by the UE, and then establishes a Radio Resource Control (RRC) connection between the UE and the network.
- RRC Radio Resource Control
- the synchronization signal needs to be sent by the base station first. After the UE detects the synchronization signal sent by the base station, the subsequent access procedure can be performed.
- the base station uses a Massive MIMO antenna, the beam formed by the base station is narrow, so that the synchronization signal sent by the base station may not be received by the UE, which may result in the UE not being able to access the base station normally.
- the embodiment of the present application considers the improvement of the existing access procedure.
- the UE Before the base station sends the synchronization signal, the UE first sends a first signal. After the first signal is received by the base station, the base station can learn. The UE is located, so that the beam orientation can be aligned with the location of the UE and then the synchronization signal is sent, so that the UE can receive the synchronization signal normally, thereby completing the access procedure.
- the first network device represents any type of network device that the UE, the terminal device, and the like need to access in wireless communication.
- the second network device represents any network device such as a base station that provides access resources and transmits a synchronization signal in wireless communication.
- FIG. 2 is a flowchart of Embodiment 1 of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 2, the method in this embodiment includes:
- Step S201 The first network device sends the first signal before performing cell selection.
- the first signal sent by the UE to the base station is a random access signal, and the random access signal is detected by the UE.
- the cell selection is completed. Therefore, the problem that the UE cannot receive the synchronization signal sent by the base station and cannot complete the access is generated.
- the first network device sends the first signal before performing the cell selection, that is, the first network device sends the random access signal to the second network before determining the accessed cell.
- the device sent a first signal.
- the function of the first signal is to let the second network device know the orientation of the first network device, so that the second network device can adjust the beam to enable the first network device to receive the relevant signal sent by the second network device.
- the first network device can transmit the first signal at any time before the cell selection is made.
- the cell selection by the first network device indicates that the first network device determines the accessed cell or the camped cell.
- CONNECTED connected state
- IDLE idle state
- the access flow shown in FIG. 1 shows a case where the first network device enters a connected state. If the first network device needs to enter an idle state, the first network device is after step S103. The access procedure will end and will only reside in the cell after the primary selection. It can be seen that regardless of whether the first network device needs to be switched into the connected state or the idle state, the first network device sends the first signal for the purpose of cell selection.
- the first network device may send the first signal before receiving the synchronization signal sent by the second network device, where the first network device sends the first signal, so that the second network device can obtain the information about the orientation of the first network device, and the like.
- the synchronization signal transmitted by the second network device can be ensured to be received by the first network device.
- the first network device may also send the first signal after receiving the synchronization signal sent by the second network device, but before performing cell selection. Since the second network device sends the synchronization signal to the first network device, before the first network device accesses, the second network device needs to send information such as measurement pilot, broadcast channel, system information, etc., where the first network device The cell selection needs to be performed by measuring the measurement pilot transmitted by the second network device.
- the first network device may enable the second network device to determine a transmission beam for measuring a signal such as a pilot.
- Step S202 The first network device sends a second signal after performing cell selection, where the resources used by the first network device to send the first signal and the second signal are different, and the second signal is a random access signal.
- the subsequent access process may be performed.
- the first network device accesses the second network device by sending a second signal, where the second signal is a random access signal.
- the related information of the first network device may be learned by using the first signal, so that the second network device may send the help to the first network device.
- the information of the cell selection is performed by the first network device, so the first network device will be able to perform cell selection better.
- the resource used by the first network device to send the first signal and the second signal is different, that is, the resource used by the first network device to send the first signal is different from the random access signal.
- the first network device can transmit the first signal using a dedicated resource, such that the second network device can receive the first signal and the second signal respectively on different resources. Allocating dedicated resources for the first signal can avoid collision of the first signal and the second signal, thereby ensuring that the first signal sent by the first network device can Received by the second network device, the success rate of the first network device for cell selection is improved.
- the first network device sends the first signal before performing the cell selection, and sends the second signal after performing the cell selection, where the resources used by the first network device to send the first signal and send the second signal are different.
- the first network device is configured to enable the second network device that provides the network access capability to obtain the related information of the first network device, so that the second network device can be first according to the related information of the first network device.
- the network device sends information that helps the first network device to perform cell selection, thereby improving the success rate of the first network device for cell selection, thereby improving the access success rate of the first network device.
- the resources used by the first network device to send the first signal and the second signal are different, including: the first network device sends the first signal and sends the second signal.
- the codeword resources are different, or the time resource used by the first network device to send the first signal and the second signal is different, or the frequency resource used by the first network device to send the first signal and send the second signal is different, or the first The time-frequency resource used by the network device to transmit the first signal and transmit the second signal is different.
- the difference in resources for the first network device to send the first signal and the second signal to transmit may be from multiple angles.
- the first network device sends the first signal and the second signal is different from the codeword resource.
- the first signal sent by the first network device and the second signal sent may be in different sequences.
- the time resource used by the first network device to send the first signal and the second signal is different.
- the first network device may send the first signal and send the second signal in different subframes, or send the first signal at different times. And the period of transmitting the second signal, or transmitting the first signal and transmitting the second signal is different.
- the frequency resource used by the first network device to send the first signal and the second signal is different, and the first network device may send the first signal and send the second signal at different frequency points of the same frequency band, or the carrier in different frequency bands.
- the first signal is sent and the second signal is sent.
- the time difference frequency used by the first network device to send the first signal and the second signal is different, and the first network device may send the first signal and send the second signal on different resource blocks.
- step S201 specifically includes: the first network device sends a sequence from the first sequence group as a sequence of the first signal before the cell selection, and the first sequence group provides the first sequence group.
- the second network device of the first network device to be selected belongs to the second network device group, and the first sequence group includes at least one sequence.
- the sequence used by the first network device to send the first signal may be from the first sequence group. Selected in.
- the first sequence group is specific to the second network device group to which the second network device that provides the cell to be selected by the first network device belongs.
- the first network device needs to perform cell selection, since there may be a plurality of cells that can be accessed by the first network device, that is, there may be a plurality of second network devices that provide cells accessible by the first network device, then When the first network device determines the cell that needs to be accessed, there may be a selection of multiple cells available for access.
- the second network device in one area may provide access services for the first network device in the same area, and the second network device in one area may serve as a second network device group.
- the first network device may select a first sequence group specific to the second network device group.
- a sequence is selected as the sequence of the first signal to send. Since the first sequence group is specific to the second network device group, each second network device in the second network device group can receive and parse the first signal, so that each second network device in the second network device group
- the related information may be sent to the first network device for the first signal, so that the first network device performs cell selection according to the information sent by each second network device.
- the first set of sequences can be a collection of several sequences including at least one sequence.
- the first network device determines that one sequence is sent from the first sequence group as a sequence of the first signal
- the first sequence group is the second network device that provides the cell to be selected by the first network device belongs to the second Network device group specific.
- the first sequence group is determined by a multicast signal, and the multicast signal is transmitted by at least two second network devices in the second network device group simultaneously.
- the multicast transmission indicates that each second network device in the second network device group sends the first sequence group.
- the multicast signal sent by each network device in the second network device group can be received by the first network device before the first network device is accessed, and before the first signal is sent, so the first network device can obtain the second After the multicast signal sent by the at least two second network devices in the network device group, the first signal is sent.
- step S201 specifically includes: the first network device sends a sequence from the first sequence group as a sequence of the first signal before performing cell selection, and the first sequence group is adopted.
- the specific identifier determined by the specific identifier of the first network device includes an International Mobile Subscriber Identification Number (IMSI) or a Temporary Mobile Subscriber Identity (TMSI).
- the sequence used by the first network device to send the first signal before performing cell selection may be selected from the first sequence group, but the first sequence group is A specific identification of a network device is determined.
- the specific identifier includes identification information of an IMSI, a TMSI, etc. of the first network device that can characterize the first network device.
- the first signal sent by the first network device will also have the unique feature information.
- the second network device can obtain the specific identifier of the first network device that sends the first signal, thereby determining The identity of the first network device. Further, the second network device may send different information to the first network device by using different policies according to the specific identifier of the first network device.
- the first network device may further select a sequence from the predefined first sequence group as a sequence of the first signal.
- the fixed first sequence group is also predefined in the second network device.
- the second network device can also be configured to receive the first signal sent by the first network device.
- step S201 specifically includes: the first network device transmitting the first signal on a specific frequency domain resource before performing cell selection.
- the first center frequency point of the first network device that sends the first signal may be selected in the first center frequency point set, where the first center frequency point set may be a fixed set.
- the first central frequency point set is (f1, f2, f3, f4), and f1, f2, f3, and f4 may be carrier frequencies in different frequency bands, or carrier frequencies in the same frequency band.
- the first network device may select a frequency point to transmit the first signal in f1, f2, f3, f4, or send the first signal at all frequency points.
- the specific frequency domain resources include specific frequency domain resources in all frequency bands supported by the first network device, or specific frequency domain resources in one frequency band.
- the first center frequency point of the first network device sending the first signal is a fixed frequency point.
- the bandwidth class in which the first network device sends the first signal may be fixed, for example, at least one of B1, B2, and B3.
- step S201 specifically includes: the first network device sends the first signal on a specific time resource before performing cell selection.
- the time at which the first network device sends the first signal may be fixed, for example, (t1, t2, t3, t4).
- the time interval at which the first network device sends the first signal is fixed, for example, ⁇ t1, ⁇ t2, ⁇ t3, ⁇ t4... ⁇ tn.
- the step S201 includes: the first network device repeatedly sends the first signal in the first time period before the cell selection is performed; the signal transmission method provided by the embodiment of the present invention further includes The first network device stops transmitting the first signal during the second time period, and the first time period and the second time period are predefined. Moreover, the number of times the first network device repeatedly transmits the first signal in the first time period may also be predefined.
- the power of the first network device to send the first signal may be predefined.
- step S201 specifically includes: if the first network device enters The random access fails, and the first network device sends the first signal on the specific time resource before the cell selection is performed.
- the signal transmission method provided by the embodiment of the present invention further includes: When the first network device performs random access, the first network device stops transmitting the first signal.
- the purpose of the first network device to send the first signal before the cell selection is to enable the second network device to learn related information of the first network device, so that the first network device performs cell selection better. If the first network device fails to perform random access, the first network device needs to perform cell selection again. At this time, the first network device may continue to send the first signal on the specific time resource, if the first network device performs random access. If the entry is successful, the first network device stops transmitting the first signal. Thereby, the first network device can be guaranteed to successfully perform random access.
- the first network device needs to detect at least the synchronization signal and the broadcast signal and the common pilot in the random access procedure.
- the first network device may transmit the first signal before performing cell selection and before detecting the synchronization signal.
- the first network device may also transmit the first signal before performing the cell selection and before detecting the broadcast signal.
- the first network device may also transmit the first signal before performing cell selection and after detecting the synchronization signal, and before detecting the broadcast signal.
- the first network device may transmit the first signal before performing cell selection and after detecting the synchronization signal, and detecting the broadcast signal.
- the first network device may also send the first signal before performing cell selection and after measuring the common pilot signal; the first network device may also send the first before performing cell selection and after measuring the pilot signal. a signal.
- FIG. 3 is a flowchart of Embodiment 2 of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 3, the method in this embodiment includes:
- Step S301 The first network device sends the first signal before performing cell selection.
- Step S302 The first network device receives the at least one third signal sent by the at least one second network device in the second network device group.
- the first network device sends the first signal for better cell selection.
- there may be at least one second network device capable of providing network services and the first network device
- the second network device that provides the network service capability in the area is the second network device group.
- the first signal transmitted by the first network device can be received by the at least one second network device of the second network device group.
- the second network device capable of providing the access service for the first network device in order to enable the first network device to perform cell selection, will be first
- the network device sends a third signal.
- the third signal is used to enable the first network device to perform cell selection
- the third signal may be a synchronization signal, or the third signal may also be a signal for measuring a pilot, a broadcast signal, or the like.
- the first network device will receive the at least one third signal transmitted by the at least one second network device of the second network device group.
- Step S303 the first network device performs cell selection according to the at least one third signal.
- the first network device after receiving the at least one third signal, performs cell selection according to the at least one third signal.
- the first network device may randomly select a cell among the cells indicated by the third signal.
- the first network device may perform measurement on the at least one third signal, and select a cell corresponding to the third signal with the best measured signal quality.
- the first network device may further send a measurement message to the second network device that sends the third signal after receiving the at least one third signal, and perform cell selection according to the measurement result sent by the second network device.
- Step S304 The first network device sends a second signal after performing cell selection, where the resources used by the first network device to send the first signal and the second signal are different, and the second signal is a random access signal.
- the first network device sends a first signal before performing cell selection, and then performs cell selection according to a third signal sent by at least one second network device in the second network device group, and sends the cell after performing cell selection.
- a second signal where the first network device sends the first signal and the second signal is different, so that the first network device can enable the second network device that provides the network access capability to learn the first network before performing the cell selection.
- Information about the device so that the second network device can send a third signal that helps the first network device to perform cell selection according to the related information of the first network device, thereby improving the first network device to perform cell
- the success rate of the selection increases the access success rate of the first network device.
- the method further includes: the first signal and the second signal are orthogonal.
- the first signal and the second signal are orthogonal to avoid interference between the first signal and the second signal, thereby ensuring that both the first signal and the second signal can be received by the second network device, thereby further improving the first The success rate of the network device for cell selection.
- FIG. 4 is a flowchart of Embodiment 3 of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 4, the method in this embodiment includes:
- Step S401 The second network device receives the first signal that is sent by the first network device before performing cell selection.
- the first signal sent by the UE to the base station is a random access signal, and the random access signal is detected by the UE.
- the cell selection is completed. Therefore, the problem that the UE cannot receive the synchronization signal sent by the base station and cannot complete the access is generated.
- the second network device before the first network device performs cell selection, the second network device first receives the first signal sent by the first network device, that is, before the first network device determines the accessed cell, And sending a first signal to the second network device before sending the random access signal.
- the function of the first signal is to let the second network device know the orientation of the first network device, so that the second network device can adjust the beam to enable the first network device to receive the relevant signal sent by the second network device.
- the second network device may receive the first signal sent by the first network device at any time before the first network device performs cell selection.
- the cell selection by the first network device indicates that the first network device determines the accessed cell or the camped cell.
- CONNECTED connected state
- IDLE idle state
- the access flow shown in FIG. 1 shows the case where the first network device enters the connected state. If the first network device needs to enter the idle state, the first network device will end the access process after step S103, and only stationed. Stay in the cell after the primary election. It can be seen that regardless of whether the first network device needs to be switched into the connected state or the idle state, the first network device sends the first signal for the purpose of cell selection.
- the second network device may receive the first signal sent by the first network device before sending the synchronization signal to the first network device, where the second network device may learn the information about the orientation of the first network device according to the first signal, thereby The synchronization signal transmitted by the second network device can be ensured to be received by the first network device.
- the second network device may further receive the first signal sent by the first network device after transmitting the synchronization signal to the first network device, but before the first network device performs cell selection. Since the second network device sends the synchronization signal to the first network device, before the first network device accesses, the second network device needs to send information such as measurement pilot, broadcast channel, system information, etc., where the first network device The cell selection needs to be performed by measuring the measurement pilot transmitted by the second network device.
- the second network device may determine the measurement guide. The transmit beam of the frequency and other signals.
- Step S402 The second network device receives a second signal that is sent by the first network device after performing cell selection, where the second network device receives the first signal and receives the second signal, and the second signal is a random access signal. .
- the subsequent access process may be performed.
- the second network device may continue the subsequent access process of the first network device, where the second signal is a random access signal.
- the second network device may learn related information of the first network device by using the first signal, so that the second network device may send the first network device to the first network device.
- the information of the cell selection is performed, so the first network device will be able to perform cell selection better.
- the resource used by the second network device to receive the first signal and receive the second signal is different, that is, the resource used by the second network device to receive the first signal is different from the random access signal.
- the second network device can receive the first signal using a dedicated resource, such that the second network device can receive the first signal and the second signal, respectively, on different resources. Allocating a dedicated resource for the first signal can avoid the conflict between the first signal and the second signal, thereby ensuring that the second network device can correctly receive the first signal, and improving the success rate of the first network device for cell selection.
- the second network device receives the first signal sent by the first network device before performing cell selection, and then receives the second signal that is sent by the first network device after performing cell selection, where the second network device receives the first signal.
- the first network device can enable the second network device that provides the network access capability to obtain the related information of the first network device, so that the second network device can Sending information that helps the first network device to perform cell selection according to the related information of the first network device, thereby improving the success rate of the first network device for performing cell selection, thereby improving the connection of the first network device. Success rate.
- the second network device receives the first signal and receives the second signal
- the resource used by the second network device includes: the second network device receives the first signal and receives the second signal.
- the codeword resources are different, or the time resource used by the second network device to receive the first signal and receive the second signal is different, or the second network device receives the first signal and receives the second signal
- the frequency resources used are different, or the time-frequency resources used by the second network device to receive the first signal and receive the second signal are different.
- the different resources of the second network device receiving the first signal and receiving the second signal may be from multiple angles.
- the second network device receives the first signal and receives the second signal by using different codeword resources.
- the first signal received by the second network device and the received second signal may be in different sequences.
- the time resource used by the second network device to receive the first signal and receive the second signal may be different, and the second network device may receive the first signal and receive the second signal in different subframes, or receive the first signal at different times. And receiving the second signal, or receiving the first signal and receiving the second signal, the period is different.
- the second network device receives the first signal and receives the second signal, and the second network device receives the first signal and the second signal at different frequency points of the same frequency band, or the carrier in different frequency bands.
- the first signal is received and the second signal is received.
- the second network device receives the first signal and receives the second signal.
- the time-frequency resource used by the second network device may be that the second network device receives the first signal
- the method further includes: the second network device sends a multicast signal to the first network device, where the multicast signal includes a first sequence group, and the first sequence group is The first network signal is selected from the first sequence group, and the first sequence group includes at least one sequence.
- the sequence used by the second network device to receive the first signal may be that the first network device selects from the first sequence group.
- the first sequence group is specific to the second network device group to which the second network device that provides the cell to be selected by the first network device belongs.
- the first network device needs to perform cell selection, since there may be a plurality of cells that can be accessed by the first network device, that is, there may be a plurality of second network devices that provide cells accessible by the first network device, then When the first network device determines the cell that needs to be accessed, there may be a selection of multiple cells available for access.
- the second network device in one area may provide access services for the first network device in the same area, and the second network device in one area may serve as a second network device group.
- the first network device may select a first sequence group specific to the second network device group.
- a sequence is selected as the sequence of the first signal to send. Since the first sequence group is specific to the second network device group, each second network device in the second network device group can receive and parse the first signal, so that each second network device in the second network device group Can be directed to the first signal.
- the network device sends related information, so that the first network device performs cell selection according to information sent by each second network device.
- the first set of sequences can be a collection of several sequences including at least one sequence.
- the first network device sends a sequence from the first sequence group as a sequence of the first signal, where the first sequence group is the second network device group to which the second network device that provides the cell to be selected by the first network device belongs specific. Then, before receiving the first signal sent by the first network device, the second network device further needs to send the first sequence group to the first network device, where the first sequence group is determined by using a multicast signal, and the multicast signal is the second At least two second network devices in the network device group are simultaneously transmitted.
- the multicast transmission indicates that each second network device in the second network device group sends the first sequence group.
- the multicast signal sent by each network device in the second network device group can be received by the first network device before the first network device is accessed, and before the first signal is sent, so the first network device can obtain the second After the multicast signal sent by the at least two second network devices in the network device group, the first signal is sent.
- FIG. 5 is a flowchart of Embodiment 4 of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method in this embodiment includes:
- Step S501 The second network device receives the first signal that is sent by the first network device before performing cell selection.
- Step S502 the second network device generates a third signal according to the first signal.
- Step S503 The second network device sends a third signal to the first network device, where the third signal is used to enable the first network device to perform cell selection.
- the first network device sends the first signal for better cell selection.
- the second network device that provides the network service capability in the area is the second network device group.
- the first signal transmitted by the first network device can be received by the at least one second network device of the second network device group. If the second network device that receives the first signal can provide an access service for the first network device, in order to enable the first network device to perform cell selection, a third signal is sent to the first network device.
- the second network device can learn related information of the first network device according to the received first signal, so that the third signal can be generated according to the first signal.
- the third signal is used to enable the first network device to perform cell selection, the third signal may be a synchronization signal, or the third signal may also be a signal for measuring a pilot, a broadcast signal, or the like.
- Step S504 The second network device receives a second signal that is sent by the first network device after performing the cell selection, where the second network device receives the first signal and receives the second signal, and the second signal is a random access signal. .
- the second network device receives the first signal that is sent by the first network device before performing the cell selection, and then the second network device generates the third signal according to the first signal and sends the third signal to the first network device, and receives the first a second signal sent by the network device after the cell selection is performed, where the resources used by the first network device to send the first signal and the second signal are different, so that the first network device can provide network access before performing cell selection.
- the second network device of the capability learns the related information of the first network device, so that the second network device can send, to the first network device, the third signal that helps the first network device to perform cell selection according to the related information of the first network device. Therefore, the success rate of the cell selection by the first network device is improved, thereby improving the access success rate of the first network device.
- the time-frequency resource that the second network device sends the third signal is variable.
- the period during which the second network device transmits the third signal is variable. That is, the second network device may send the third signal according to the requirement, because the second network device sends the third signal to the first network device for the purpose of enabling the first network device to perform cell selection, and the third signal is based on The first signal is generated, and therefore, after the second network device receives the first signal, after acquiring the related information of the first network device, the first network device can receive the time-frequency resource and/or the period of the third signal. Sending a third signal to the first network device.
- the second network device receives the second signal sent by the first network device after performing the cell selection, and further includes: the second network device sends the fourth network device to the first network device.
- the signal, the fourth signal is a broadcast signal.
- the second network device sends the broadcast signal to the first network device in order to enable the first network device to detect the system message of the cell, so that the random access, that is, the second signal, can be initiated.
- the time-frequency resource at which the second network device transmits the broadcast signal is variable.
- the period during which the second network device transmits the broadcast signal is variable.
- the method further includes: the first signal and the second signal are orthogonal.
- the first signal and the second signal are orthogonal to avoid interference between the first signal and the second signal, thereby ensuring that both the first signal and the second signal can be received by the second network device, thereby further Step by step to improve the success rate of the first network device for cell selection.
- FIG. 6 is a schematic structural diagram of Embodiment 1 of a network device according to an embodiment of the present invention.
- the network device in this embodiment is a first network device.
- the network device in this embodiment includes:
- the sending module 61 is configured to send the first signal before performing cell selection.
- the processing module 62 is configured to perform cell selection.
- the sending module 61 is further configured to: after the processing module 62 performs cell selection, send a second signal, where the sending module 61 sends the first signal and the resource used to send the second signal is different, and the second signal is random. Access signal.
- the network device of this embodiment is used to perform the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
- the sending module 61 sends the first signal and the resource used to send the second signal is different, and the sending module 61 uses the first signal and the second signal to be sent.
- the codeword resources are different, or the time resource used by the sending module 61 to send the first signal and the second signal is different, or the sending module 61 sends the first signal and sends the second signal.
- the frequency resources are different, or the time-frequency resources used by the sending module 61 to send the first signal and the second signal are different.
- the sending module 61 is specifically configured to: before the cell selection by the processing module 62, determine a sequence from the first sequence group to be sent as a sequence of the first signal, where the first The sequence group is specific to the second network device group to which the second network device of the cell to be selected by the first network device belongs, and the first sequence group includes at least one sequence.
- the first sequence group is determined by using a multicast signal, and the multicast signal is performed by at least two second network devices in the second network device group simultaneously. Sent.
- the sending module 61 is specifically configured to: before the processing module 62 performs cell selection, determine a sequence from the first sequence group to be sent as a sequence of the first signal, where the A sequence group is determined by a specific identity of the first network device, the specific identity including an IMSI or a TMSI.
- the sending module 61 is specifically configured to: before the processing module 62 performs cell selection, determine a sequence from the first sequence group to be sent as a sequence of the first signal, where the A sequence group is predefined.
- the sending module 61 is specifically configured to send the first signal on a specific frequency domain resource before the processing module 62 performs cell selection.
- the specific frequency domain resource includes: a specific frequency domain resource in all frequency bands supported by the first network device.
- the sending module 61 is specifically configured to send the first signal on a specific time resource before the processing module 62 performs cell selection.
- the sending module 61 is specifically configured to repeatedly send the first signal in a first time period before the processing module 62 performs cell selection; the sending module 61 is further used in the first The transmitting the first signal is stopped within two time periods, and the first time period and the second time period are predefined.
- the sending module 61 is specifically configured to: if the first network device fails to perform random access, and the first network device performs the cell selection, then the specific The first signal is sent on the time resource; the sending module 61 is further configured to stop sending the first signal if the first network device performs random access successfully.
- the sending module 61 is specifically configured to send the first signal before the processing module 62 performs cell selection and before detecting the synchronization signal.
- the sending module 61 is specifically configured to send the first signal before the processing module 62 performs cell selection and before detecting the broadcast signal.
- the sending module 61 is specifically configured to send the first signal before the processing module 62 performs cell selection and after detecting the synchronization signal, and before detecting the broadcast signal.
- the transmitting module 61 is configured to send the first signal before the processing module 62 performs cell selection and after detecting the synchronization signal, and after detecting the broadcast signal.
- the transmitting module 61 is configured to send the first signal before the processing module 62 performs cell selection and after measuring the common pilot signal.
- the sending module 61 is specifically configured to send the first signal before the processing module 62 performs cell selection and after measuring the pilot signal.
- FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device according to an embodiment of the present invention. As shown in FIG. 7, the network device in this embodiment further includes:
- the receiving module 63 is configured to: before the sending module 61 sends the second signal after performing cell selection, Receiving at least one third signal sent by at least one second network device in the second network device group.
- the processing module 62 is specifically configured to perform cell selection according to the at least one third signal.
- the processing module 62 is configured to perform measurement on the at least one third signal, and select a cell provided by the second network device corresponding to the third signal with the best signal quality.
- the first signal and the second signal are orthogonal.
- FIG. 8 is a schematic structural diagram of Embodiment 3 of a network device according to an embodiment of the present invention.
- the network device in this embodiment is a second network device.
- the network device in this embodiment includes:
- the receiving module 81 is configured to receive a first signal that is sent by the first network device before performing cell selection, and receive a second signal that is sent by the first network device after performing cell selection, where the receiving module 81 receives the first signal and The resources used to receive the second signal are different, and the second signal is a random access signal.
- the network device of this embodiment is used to perform the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
- the receiving module 81 receives the first signal and the resource used to receive the second signal is different, and the receiving module 81 receives the first signal and receives the second
- the codeword resource used by the signal is different, or the time resource used by the receiving module 81 to receive the first signal and the second signal is different, or the receiving module 81 receives the first signal and receives the second signal.
- the frequency resources used are different, or the time-frequency resources used by the receiving module 81 to receive the first signal and receive the second signal are different.
- FIG. 9 is a schematic structural diagram of Embodiment 4 of a network device according to an embodiment of the present invention. As shown in FIG. 9, the network device of this embodiment further includes:
- the sending module 82 is configured to send, by the receiving module 81, a multicast signal to the first network device, before the first signal sent by the first network device before performing cell selection, where the multicast signal includes a first sequence group,
- the first sequence group is specific to the second network device group to which the second network device belongs, the first signal is selected from the first sequence group, and the first sequence group includes at least one sequence.
- FIG. 10 is a schematic structural diagram of Embodiment 5 of a network device according to an embodiment of the present invention. As shown in FIG. 10, the network device of this embodiment further includes:
- the processing module 83 is configured to receive, by the receiving module 81, the first network device to perform cell selection.
- a third signal is generated according to the first signal before the second signal transmitted.
- the sending module 82 is further configured to send the third signal to the first network device, where the third signal is used to enable the first network device to perform cell selection.
- the time-frequency resource that the sending module 82 sends the third signal is variable.
- the period in which the transmitting module 82 transmits the third signal is variable.
- the sending module 82 is further configured to: before the receiving module 81 receives the second signal sent by the first network device after performing cell selection, to the first The network device transmits a fourth signal, which is a broadcast signal.
- the time-frequency resource that the transmitting module 82 sends the broadcast signal is variable.
- the period in which the transmitting module 82 transmits the broadcast signal is variable.
- the first signal and the second signal are orthogonal.
- the sending module 61 in the embodiment of the present invention may correspond to a transmitter of a network device, and may also correspond to a transceiver of the network device.
- the receiving module 63 may correspond to a receiver of the network device, or may correspond to a transceiver of the network device.
- the processing module 62 may correspond to a processor in the network device, where the processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or implement the implementation of the present invention. An example of one or more integrated circuits.
- the network device may further include a memory for storing the instruction code, the processor invoking the instruction code of the memory, and controlling the transmitting module 61 and the receiving module 63 in the embodiment of the present invention to perform the above operations.
- the receiving module 81 in the embodiment of the present invention may correspond to a transmitter of a network device, or may correspond to a transceiver of the network device.
- the sending module 82 may correspond to a receiver of the network device, or may correspond to a transceiver of the network device.
- the processing module 83 can correspond to a processor of a network device, where the processor can be a CPU, or an ASIC, or one or more integrated circuits that implement embodiments of the present invention.
- the network device may further include a memory for storing the instruction code, the processor calling the instruction code of the memory, and controlling the receiving module 81 and the sending module in the embodiment of the present invention. 82 performs the above operation.
- the aforementioned program can be stored in a computer readable storage medium.
- the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
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Abstract
本发明实施例提供一种信号传输方法和网络设备,一种信号传输方法包括:第一网络设备在进行小区选择前发送第一信号;所述第一网络设备在进行小区选择后发送第二信号,所述第一网络设备发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。本发明实施例提供的信号传输方法和网络设备,提高了网络设备的接入成功率。
Description
本发明实施例涉及无线通信技术领域,尤其涉及一种信号传输方法和网络设备。
随着无线通信技术的发展,无线通信的数据传输速率越来越高,目前所使用的频谱资源已经趋于饱和,因此无线通信需要使用更高频率的频谱资源,但频率越高,路径损耗越大。
在高频场景下,可以使用大规模多入多出(Massive Multiple-Input Multiple-Output,Massive MIMO)天线形成很高的天线增益来弥补路径损耗。Massive MIMO天线中,包括很多根天线,每根天线形成的波束很窄,才能形成高的天线增益。但这样每根天线形成的波束可能无法覆盖到小区中所有的用户。
对于同步信道、广播信道、公共信道这样的信息而言,是需要同时发送到小区中的所有用户的。但采用Massive MIMO天线时,可能由于天线波束较窄,而无法将同步信道、广播信道、公共信道这种信息发送至小区中的所有用户,从而导致小区中的用户无法正常接入。
发明内容
本发明实施例提供一种信号传输方法和网络设备,用于提高网络设备的接入成功率。
第一方面提供一种信号传输方法,包括:
第一网络设备在进行小区选择前发送第一信号;
所述第一网络设备在进行所述小区选择后发送第二信号,所述第一网络设备发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
结合第一方面,在第一方面第一种可能的实现方式中,所述采用的资源
不同,包括以下之一:
采用的码字资源不同;
采用的时间资源不同;
采用的频率资源不同;以及
采用的时频资源不同。
结合第一方面或第一方面第一种可能的实现方式,在第一方面第二种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组为提供所述第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,所述第一序列组中包括至少一个序列。
结合第一方面第二种可能的实现方式,在第一方面第三种可能的实现方式中,所述第一序列组是通过多播信号确定的,所述多播信号是所述第二网络设备组中的至少两个第二网络设备同时进行发送的。
结合第一方面或第一方面第一种可能的实现方式,在第一方面第四种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是通过所述第一网络设备的特定标识确定的,所述特定标识包括IMSI或者TMSI。
结合第一方面或第一方面第一种可能的实现方式,在第一方面第五种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是预定义的。
结合第一方面至第一方面第五种可能的实现方式中任一种可能的实现方式,在第一方面第六种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
第一网络设备在进行所述小区选择前在特定的频域资源上发送所述第一信号。
结合第一方面第六种可能的实现方式,在第一方面第七种可能的实现方式中,所述特定的频域资源包括:
所述第一网络设备支持的所有频带内的特定频域资源。
结合第一方面至第一方面第七种可能的实现方式中任一种可能的实现方式,在第一方面第八种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号。
结合第一方面第八种可能的实现方式,在第一方面第九种可能的实现方式中,所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号,包括:
所述第一网络设备在进行所述小区选择前在第一时间段内重复发送所述第一信号;
所述方法还包括:所述第一网络设备在第二时间段内停止发送所述第一信号,所述第一时间段和所述第二时间段为预定义的。
结合第一方面第八种可能的实现方式,在第一方面第十种可能的实现方式中,所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号,包括:
若所述第一网络设备进行随机接入失败,并且所述第一网络设备在进行所述小区选择前,则所述第一网络设备在特定的时间资源上发送所述第一信号;
所述方法还包括:
若所述第一网络设备进行随机接入成功,则所述第一网络设备停止发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十一种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在检测同步信号前发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十二种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在检测广播信号前发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十三种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在检测同步信号后,以及检测广播信号前发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十四种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在检测同步信号后,以及检测广播信号后发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十五种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在对公共导频信号进行测量后发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十六种可能的实现方式中,所述第一网络设备在进行小区选择前发送第一信号,包括:
所述第一网络设备在进行所述小区选择前且在对导频信号进行测量后发送所述第一信号。
结合第一方面至第一方面第十种可能的实现方式中任一种可能的实现方式,在第一方面第十七种可能的实现方式中,所述第一网络设备在进行所述小区选择后发送第二信号之前,还包括:
所述第一网络设备接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号;
所述第一网络设备根据所述至少一个第三信号进行所述小区选择。
结合第一方面第十七种可能的实现方式,在第一方面第十八种可能的实现方式中,所述第一网络设备根据所述至少一个第三信号进行所述小区选择,
包括:
所述第一网络设备对所述至少一个第三信号进行测量,选择信号质量最好的第三信号对应的第二网络设备所提供的小区。
结合第一方面至第一方面第十八种可能的实现方式中任一种可能的实现方式,在第一方面第十九种可能的实现方式中,所述第一信号和所述第二信号正交。
第二方面提供一种信号传输方法,包括:
第二网络设备接收第一网络设备在进行小区选择前发送的第一信号;
所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号,所述第二网络设备接收所述第一信号和接收所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
结合第二方面,在第二方面第一种可能的实现方式中,所述采用的资源不同,包括以下之一:
采用的码字资源不同;
采用的时间资源不同;
采用的频率资源不同;以及
采用的时频资源不同。
结合第二方面或第二方面第一种可能的实现方式,在第二方面第二种可能的实现方式中,所述第二网络设备接收第一网络设备在进行小区选择前发送的第一信号之前,还包括:
所述第二网络设备向所述第一网络设备发送多播信号,所述多播信号包括第一序列组,所述第一序列组为所述第二网络设备所属第二网络设备组特定的,所述第一信号从所述第一序列组中选择,所述第一序列组中包括至少一个序列。
结合第二方面至第二方面第二种可能的实现方式中任一种可能的实现方式,在第二方面第三种可能的实现方式中,所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,还包括:
所述第二网络设备根据所述第一信号生成第三信号;
所述第二网络设备向所述第一网络设备发送所述第三信号,所述第三信号用于使所述第一网络设备进行所述小区选择。
结合第二方面第三种可能的实现方式,在第二方面第四种可能的实现方式中,所述第二网络设备发送所述第三信号的时频资源是可变的。
结合第二方面第三种或第四种可能的实现方式,在第二方面第五种可能的实现方式中,所述第二网络设备发送所述第三信号的周期是可变的。
结合第二方面至第二方面第五种可能的实现方式中任一种可能的实现方式,在第二方面第六种可能的实现方式中,所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,还包括:
所述第二网络设备向所述第一网络设备发送第四信号,所述第四信号为广播信号。
结合第二方面第六种可能的实现方式,在第二方面第七种可能的实现方式中,所述第二网络设备发送所述广播信号的时频资源是可变的。
结合第二方面第六种或第七种可能的实现方式,在第二方面第八种可能的实现方式中,所述第二网络设备发送所述广播信号的周期是可变的。
结合第二方面至第二方面第八种可能的实现方式中任一种可能的实现方式,在第二方面第九种可能的实现方式中,所述第一信号和所述第二信号正交。
第三方面提供一种网络设备,所述网络设备为第一网络设备,所述网络设备包括:
发送模块,用于在进行小区选择前发送第一信号;
处理模块,用于进行小区选择;
所述发送模块,还用于在所述处理模块进行所述小区选择后发送第二信号,所述发送模块发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
结合第三方面,在第三方面第一种可能的实现方式中,所述采用的资源不同,包括以下之一:
采用的码字资源不同;
采用的时间资源不同;
采用的频率资源不同;以及
采用的时频资源不同。
结合第三方面或第一方面,在第三方面第二种可能的实现方式中,所述
发送模块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组为提供所述第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,所述第一序列组中包括至少一个序列。
结合第三方面第二种可能的实现方式,在第三方面第三种可能的实现方式中,所述第一序列组是通过多播信号确定的,所述多播信号是所述第二网络设备组中的至少两个第二网络设备同时进行发送的。
结合第三方面或第三方面,在第三方面第四种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是通过所述第一网络设备的特定标识确定的,所述特定标识包括IMSI或者TMSI。
结合第三方面或第三方面第一种可能的实现方式,在第三方面第五种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是预定义的。
结合第三方面至第三方面第五种可能的实现方式中任一种可能的实现方式,在第三方面第六种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前在特定的频域资源上发送所述第一信号。
结合第三方面第六种可能的实现方式,在第三方面第七种可能的实现方式中,所述特定的频域资源包括:
所述第一网络设备支持的所有频带内的特定频域资源。
结合第三方面至第三方面第七种可能的实现方式中任一种可能的实现方式,在第三方面第八种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前在特定的时间资源上发送所述第一信号。
结合第三方面第八种可能的实现方式,在第三方面第九种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前在第一时间段内重复发送所述第一信号;
所述发送模块,还用于在第二时间段内停止发送所述第一信号,所述第一时间段和所述第二时间段为预定义的。
结合第三方面第八种可能的实现方式,在第三方面第十种可能的实现方
式中,所述发送模块,具体用于若所述第一网络设备进行随机接入失败,并且所述第一网络设备在进行所述小区选择前,则在特定的时间资源上发送所述第一信号;
所述发送模块,还用于若所述第一网络设备进行随机接入成功,则停止发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十一种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号前发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十二种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测广播信号前发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十三种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号后,以及检测广播信号前发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十四种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号后,以及检测广播信号后发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十五种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在对公共导频信号进行测量后发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十六种可能的实现方式中,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在对导频信号进行测量后发送所述第一信号。
结合第三方面至第三方面第十种可能的实现方式中任一种可能的实现方式,在第三方面第十七种可能的实现方式中,所述网络设备还包括:
接收模块,用于在所述发送模块在进行所述小区选择后发送第二信号之
前,接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号;
所述处理模块,具体用于根据所述至少一个第三信号进行所述小区选择。
结合第三方面第十七种可能的实现方式,在第三方面第十八种可能的实现方式中,所述处理模块,具体用于对所述至少一个第三信号进行测量,选择信号质量最好的第三信号对应的第二网络设备所提供的小区。
结合第三方面至第三方面第十八种可能的实现方式中任一种可能的实现方式,在第三方面第十九种可能的实现方式中,所述第一信号和所述第二信号正交。
第四方面提供一种网络设备,所述网络设备为第二网络设备,所述网络设备包括:
接收模块,用于接收第一网络设备在进行小区选择前发送的第一信号;接收所述第一网络设备在进行所述小区选择后发送的第二信号,所述接收模块接收所述第一信号和接收所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
结合第四方面,在第四方面第一种可能的实现方式中,所述采用的资源不同,包括以下之一:
采用的码字资源不同;
采用的时间资源不同;
采用的频率资源不同;以及
采用的时频资源不同。
结合第四方面或第四方面第一种可能的实现方式,在第四方面第二种可能的实现方式中,所述网络设备还包括:发送模块,用于在所述接收模块接收第一网络设备在进行所述小区选择前发送的第一信号之前,向所述第一网络设备发送多播信号,所述多播信号包括第一序列组,所述第一序列组为所述第二网络设备所属第二网络设备组特定的,所述第一信号从所述第一序列组中选择,所述第一序列组中包括至少一个序列。
结合第四方面至第四方面第二种可能的实现方式中任一种可能的实现方式,在第四方面第三种可能的实现方式中,所述网络设备还包括:
处理模块,用于在所述接收模块接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,根据所述第一信号生成第三信号;
所述发送模块,还用于向所述第一网络设备发送所述第三信号,所述第三信号用于使所述第一网络设备进行所述小区选择。
结合第四方面第三种可能的实现方式,在第四方面第四种可能的实现方式中,所述发送模块发送所述第三信号的时频资源是可变的。
结合第四方面第三种或第四种可能的实现方式,在第四方面第五种可能的实现方式中,所述发送模块发送所述第三信号的周期是可变的。
结合第四方面至第四方面第五种可能的实现方式中任一种可能的实现方式,在第四方面第六种可能的实现方式中,所述发送模块,还用于在所述接收模块接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,向所述第一网络设备发送第四信号,所述第四信号为广播信号。
结合第四方面第六种可能的实现方式,在第四方面第七种可能的实现方式中,所述发送模块发送所述广播信号的时频资源是可变的。
结合第四方面第六种或第七种可能的实现方式,在第四方面第八种可能的实现方式中,所述发送模块发送所述广播信号的周期是可变的。
结合第四方面至第四方面第八种可能的实现方式中任一种可能的实现方式,在第四方面第九种可能的实现方式中,所述第一信号和所述第二信号正交。
本发明实施例提供的信号传输方法和网络设备中,第一网络设备通过在进行小区选择前发送第一信号,并在进行小区选择后发送第二信号,其中第一网络设备发送第一信号和发送第二信号所采用的资源不同,使得第一网络设备在进行小区选择前,能够使提供网络接入能力的第二网络设备获知第一网络设备的相关信息,从而使得第二网络设备可以根据第一网络设备的相关信息向第一网络设备发送有助于第一网络设备进行小区选择的信息,从而提高了第一网络设备进行小区选择的成功率,进而提高了第一网络设备的接入成功率。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在
不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为LTE的初始接入流程;
图2为本发明实施例提供的信号传输方法实施例一的流程图;
图3为本发明实施例提供的信号传输方法实施例二的流程图;
图4为本发明实施例提供的信号传输方法实施例三的流程图;
图5为本发明实施例提供的信号传输方法实施例四的流程图;
图6为本发明实施例提供的网络设备实施例一的结构示意图;
图7为本发明实施例提供的网络设备实施例二的结构示意图;
图8为本发明实施例提供的网络设备实施例三的结构示意图;
图9为本发明实施例提供的网络设备实施例四的结构示意图;
图10为本发明实施例提供的网络设备实施例五的结构示意图。
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在无线通信领域中,用户设备(User Equipment,UE)需要先接入基站,才能在基站为其分配的资源上进行数据传输。以长期演进(Long Term Evolution,LTE)***为例,图1为LTE的初始接入流程。如图1所示,在步骤S101中,基站发送同步信号。在步骤S102中,UE检测到基站发送的同步信号后,根据同步信号获得定时同步以及小区标识(ID)。在步骤S103中,UE根据小区ID获得小区参考信号(Cell Reference Signal,CRS)的位置,并且进行参考信号接收功率(Reference Signal Receiving Power,RSRP)的测量,进而进行小区初选,驻留在初选的小区。在步骤S104中,UE根据CRS进行广播信道和***消息的检测,获得小区的***消息。在步骤S105中,UE发起随机接入,向基站发送随机接入信号。在步骤S106中,基站对UE发送的随机接入请求进行处理后,使UE和网络建立无线资源控制(Radio Resource Control,RRC)连接。
由此可见,在初始接入过程中,首先需要由基站发送同步信号,当UE检测到基站发送的同步信号之后,才能进行后续的接入流程。但是在高频场景下,若基站使用Massive MIMO天线,则基站形成的波束很窄,这样导致基站发送的同步信号可能无法被UE接收到,这样将导致UE无法正常接入基站。
为了解决上述问题,本申请实施例考虑对现有的接入流程进行改进,在基站发送同步信号之前,首先由UE发送一个第一信号,该第一信号被基站接收到之后,基站即可获知UE所处位置,从而可以将波束方位对准UE所处位置后再发送同步信号,从而使UE可以正常接收到同步信号,进而完成接入流程。
在本发明下述各实施例中,第一网络设备表示UE、终端设备等在无线通信中需要进行接入的任一种网络设备。第二网络设备表示基站等在无线通信中提供接入资源、发送同步信号的任一种网络设备。
图2为本发明实施例提供的信号传输方法实施例一的流程图,如图2所示,本实施例的方法包括:
步骤S201,第一网络设备在进行小区选择前发送第一信号。
具体地,根据图1所示的LTE初始接入流程可知,在初始接入流程中,UE向基站发送的第一个信号为随机接入信号,并且,该随机接入信号为UE在检测到基站发送的同步信号之后,完成了小区的选择后才发送的。从而才会产生UE无法接收基站发送的同步信号而无法完成接入的问题。
而本实施例中,第一网络设备在进行小区选择前就发送第一信号,也就是说,第一网络设备在确定接入的小区之前,以及发送随机接入信号之前,先向第二网络设备发送了一个第一信号。该第一信号的作用就是让第二网络设备获知第一网络设备所处的方位,从而第二网络设备可以调整波束使第一网络设备接收到第二网络设备发送的相关信号。
第一网络设备可以在进行小区选择前的任意时刻发送第一信号。第一网络设备进行小区选择表示第一网络设备确定接入的小区或驻留的小区。第一网络设备在开机的状态下,在网络中有连接态(CONNECTED)和空闲态(IDLE)两种状态。图1所示的接入流程示出的是第一网络设备进入连接态的情况,若第一网络设备需要进入空闲态,则第一网络设备在步骤S103之后,
将结束接入流程,仅驻留在初选后的小区中。由此可见,不论第一网络设备需要转入连接态还是空闲态,第一网络设备发送第一信号的目的都是为了进行小区选择。
第一网络设备可以在接收第二网络设备发送的同步信号之前就发送第一信号,此时第一网络设备发送第一信号可以使第二网络设备获知第一网络设备的方位等相关信息,从而可以使第二网络设备发送的同步信号确保第一网络设备接收到。第一网络设备还可以在接收第二网络设备发送的同步信号之后,但在进行小区选择前发送第一信号。由于第二网络设备除了向第一网络设备发送同步信号之外,在第一网络设备接入之前,第二网络设备还需要发送测量导频、广播信道、***信息等信息,其中第一网络设备需要通过对第二网络设备发送的测量导频进行测量从而进行小区选择。而若第一网络设备检测到第二网络设备发送的同步信号,但是未检测到第二网络设备发送的测量导频等信号,还是无法进行接入。因此第一网络设备在接收第二网络设备发送的同步信号之后,但在进行小区选择前发送第一信号,可以使第二网络设备确定测量导频等信号的发送波束。
步骤S202,第一网络设备在进行小区选择后发送第二信号,第一网络设备发送第一信号和发送第二信号所采用的资源不同,并且第二信号为随机接入信号。
具体地,当第一网络设备进行了小区选择后,即第一网络设备确定了接入的小区后,即可进行后续接入流程。第一网络设备进行接入的方式是向第二网络设备发送第二信号,其中,第二信号为随机接入信号。
第一网络设备发送了第一信号后,当第二网络设备接收到第一信号,可以通过第一信号获知第一网络设备的相关信息,从而第二网络设备可以向第一网络设备发送有助于第一网络设备进行小区选择的信息,因此第一网络设备将能够更好地进行小区选择。
第一网络设备发送第一信号和发送第二信号所采用的资源不同,也就是说,第一网络设备发送第一信号所使用的资源和随机接入信号不同。第一网络设备可以使用专用的资源发送第一信号,这样第二网络设备就可以在不同的资源上分别接收第一信号和第二信号。为第一信号分配专用的资源可以避免第一信号和第二信号的冲突,从而保证第一网络设备发送的第一信号能够
被第二网络设备接收到,提高了第一网络设备进行小区选择的成功率。
本实施例,第一网络设备通过在进行小区选择前发送第一信号,并在进行小区选择后发送第二信号,其中第一网络设备发送第一信号和发送第二信号所采用的资源不同,使得第一网络设备在进行小区选择前,能够使提供网络接入能力的第二网络设备获知第一网络设备的相关信息,从而使得第二网络设备可以根据第一网络设备的相关信息向第一网络设备发送有助于第一网络设备进行小区选择的信息,从而提高了第一网络设备进行小区选择的成功率,进而提高了第一网络设备的接入成功率。
需要说明的是,在图2所示实施例中第一网络设备发送第一信号和发送第二信号所采用的资源不同,包括:第一网络设备发送第一信号和发送第二信号所采用的码字资源不同,或者第一网络设备发送第一信号和发送第二信号所采用的时间资源不同,或者第一网络设备发送第一信号和发送第二信号所采用的频率资源不同,或者第一网络设备发送第一信号和发送第二信号所采用的时频资源不同。
具体地,第一网络设备发送第一信号和发送第二信号的资源不同可以从多个角度而言。其中,第一网络设备发送第一信号和发送第二信号所采用的码字资源不同,可以是第一网络设备发送的第一信号和发送的第二信号采用不同的序列。第一网络设备发送第一信号和发送第二信号所采用的时间资源不同,可以是第一网络设备在不同的子帧发送第一信号和发送第二信号,或者在不同的时刻发送第一信号和发送第二信号,或者发送第一信号和发送第二信号的周期不同。第一网络设备发送第一信号和发送第二信号所采用的频率资源不同,可以是第一网络设备在相同频段的不同的频点发送第一信号和发送第二信号,或者在不同频段的载波上发送第一信号和发送第二信号。第一网络设备发送第一信号和发送第二信号所采用的时频资源不同,可以是第一网络设备在不同的资源块(block)上发送第一信号和发送第二信号。
进一步地,在图2所示实施例中,步骤S201具体包括:第一网络设备在进行小区选择前从第一序列组中确定一个序列作为第一信号的序列进行发送,第一序列组为提供第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,第一序列组中包括至少一个序列。
具体地,第一网络设备发送第一信号所使用的序列可以是从第一序列组
中选择的。第一序列组为提供第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的。当第一网络设备需要进行小区选择时,由于可能存在若干可供第一网络设备接入的小区,也就是可能存在若干个提供可供第一网络设备接入的小区的第二网络设备,那么第一网络设备在确定需要接入的小区时,可能存在对多个可供接入的小区的选择。一般而言,一个区域的第二网络设备可能为同一区域的第一网络设备提供接入服务,一个区域的第二网络设备可以作为一个第二网络设备组。第一网络设备在发送第一信号时,由于还未进行小区选择,也就是没有确定需要接入的第二网络设备,因此第一网络设备可以从第二网络设备组特定的一个第一序列组中选择一个序列作为第一信号的序列发送。由于第一序列组是第二网络设备组特定的,那么第二网络设备组中的各第二网络设备都可以接收并解析该第一信号,从而第二网络设备组中的各第二网络设备都可以针对该第一信号向第一网络设备发送相关信息,以便第一网络设备根据各第二网络设备发送的信息进行小区选择。第一序列组可以是若干个序列的集合,其中包括至少一个序列。
进一步地,当第一网络设备从第一序列组中确定一个序列作为第一信号的序列进行发送时,其中第一序列组为提供第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的。第一序列组是通过多播信号确定的,该多播信号是第二网络设备组中的至少两个第二网络设备同时进行发送的。其中,多播发送表示第二网络设备组中的各第二网络设备都发送该第一序列组。第二网络设备组中的各网络设备发送的多播信号能够在第一网络设备接入前,以及发送第一信号前,被第一网络设备接收到,因此第一网络设备可以在获取第二网络设备组中的至少两个第二网络设备发送的多播信号后,再发送第一信号。
进一步地,在图2所示实施例中,步骤S201具体包括:第一网络设备在进行小区选择前从第一序列组中确定一个序列作为第一信号的序列进行发送,第一序列组是通过第一网络设备的特定标识确定的,特定标识包括国际移动用户识别码(International Mobile Subscriber Identification Number,IMSI)或者临时识别码(Temporary Mobile Subscriber Identity,TMSI)。
具体地,与上述第一信号不同,第一网络设备在进行小区选择前发送的第一信号所使用的序列可以从第一序列组中选择,但该第一序列组是通过第
一网络设备的特定标识确定的。该特定标识包括第一网络设备的IMSI、TMSI等能够表征第一网络设备的特征的标识信息。这样第一网络设备发送的第一信号也将具有特有的特征信息,当第二网络设备接收到该第一信号后,即可获取发送该第一信号的第一网络设备的特定标识,从而确定第一网络设备的身份。进而第二网络设备可以根据第一网络设备的特定标识采用不同的策略向第一网络设备发送不同的信息。
可选地,第一网络设备还可以从预定义的第一序列组中选择一个序列作为第一信号的序列。该固定的第一序列组也预定义在第二网络设备中。从而也可以使第二网络设备接收到第一网络设备发送的第一信号。
可选地,在图2所示实施例中,步骤S201具体包括:第一网络设备在进行小区选择前在特定的频域资源上发送所述第一信号。具体地,第一网络设备发送第一信号的第一中心频点可以在第一中心频点集合中选择,第一中心频点集合可以是固定的集合。例如第一中心频点集合为(f1,f2,f3,f4),f1,f2,f3,f4可以是不同频段内的载频,或者相同频段内的载频。第一网络设备可以在f1,f2,f3,f4内选择一个频点发送第一信号,或者在全部频点上发送第一信号。也就是说,特定的频域资源包括第一网络设备支持的所有频带内的特定频域资源,或者一个频带内的特定频域资源。或者第一网络设备发送第一信号的第一中心频点是固定的频点。另外,第一网络设备发送第一信号的带宽课可以为固定的,例如为B1,B2,B3中的至少一种。
可选地,在图2所示实施例中,步骤S201具体包括:第一网络设备在进行小区选择前在特定的时间资源上发送第一信号。具体地,第一网络设备发送第一信号的时间可以为固定的,例如为(t1,t2,t3,t4)。或者第一网络设备发送第一信号的间隔的时间为固定的,例如为Δt1,Δt2,Δt3,Δt4...Δtn。
可选地,在图2所示实施例中,步骤S201具体包括:第一网络设备在进行小区选择前在第一时间段内重复发送第一信号;本发明实施例提供的信号传输方法还包括:第一网络设备在第二时间段内停止发送第一信号,第一时间段和第二时间段为预定义的。并且,第一网络设备在第一时间段内重复发送的第一信号的次数也可以是预定义的。
可选地,第一网络设备发送第一信号的功率可以为预定义的。
可选地,在图2所示实施例中,步骤S201具体包括:若第一网络设备进
行随机接入失败,并且所述第一网络设备在进行小区选择前,则第一网络设备在特定的时间资源上发送第一信号;本发明实施例提供的信号传输方法还包括:若所述第一网络设备进行随机接入成功,则第一网络设备停止发送第一信号。具体地,第一网络设备在小区选择前发送第一信号的目的是为了使第二网络设备获知第一网络设备的相关信息,从而使第一网络设备更好地进行小区选择。而若第一网络设备进行随机接入失败,那么第一网络设备需要重新进行小区选择,此时第一网络设备可以继续在特定的时间资源上发送第一信号,若第一网络设备进行随机接入成功,则第一网络设备停止发送第一信号。从而可以保证第一网络设备成功进行随机接入。
根据图1所示的随机接入过程可以,第一网络设备在随机接入过程中至少需要检测同步信号和广播信号以及对公共导频进行测量。而在图2所示的信号发送方法中,第一网络设备可以在进行小区选择前且在检测同步信号前发送第一信号。第一网络设备也可以在进行小区选择前且在检测广播信号前发送第一信号。第一网络设备还可以在进行小区选择前且在检测同步信号后,以及检测广播信号前发送第一信号。或者,第一网络设备可以在进行小区选择前且在检测同步信号后,以及检测广播信号后发送第一信号。另外,第一网络设备还可在进行小区选择前且在对公共导频信号进行测量后发送第一信号;第一网络设备还可以在进行小区选择前且在对导频信号进行测量后发送第一信号。
图3为本发明实施例提供的信号传输方法实施例二的流程图,如图3所示,本实施例的方法包括:
步骤S301,第一网络设备在进行小区选择前发送第一信号。
步骤S302,第一网络设备接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号。
具体地,第一网络设备发送第一信号的目的是更好地进行小区选择,在第一网络设备所处区域,可能有至少一个第二网络设备具备提供网络服务的能力,将第一网络设备所处区域具备提供网络服务能力的第二网络设备成为第二网络设备组。第一网络设备发送的第一信号能够被第二网络设备组中的至少一个第二网络设备接收到。能够为第一网络设备提供接入服务的第二网络设备在接收到第一信号后,为了使第一网络设备进行小区选择,将向第一
网络设备发送第三信号。第三信号的作用是使第一网络设备进行小区选择,第三信号可以为同步信号,或者第三信号还可以是测量导频、广播信号等信号。第一网络设备将接收到第二网络设备组中的至少一个第二网络设备发送的至少一个第三信号。
步骤S303,第一网络设备根据至少一个第三信号进行小区选择。
具体地,第一网络设备在接收到至少一个第三信号后,将根据至少一个第三信号进行小区选择。第一网络设备可以随机在第三信号表示的小区中选择一个小区。或者第一网络设备可以对至少一个第三信号进行测量,选择测量的信号质量最好的第三信号对应的小区。或者,第一网络设备还可以在接收到至少一个第三信号后,分别向发送第三信号的第二网络设备发送测量消息,再根据第二网络设备发送的测量结果进行小区选择。
步骤S304,第一网络设备在进行小区选择后发送第二信号,第一网络设备发送第一信号和发送第二信号所采用的资源不同,并且第二信号为随机接入信号。
本实施例,第一网络设备通过在进行小区选择前发送第一信号,然后根据第二网络设备组中至少一个第二网络设备发送的第三信号进行小区选择,并在进行小区选择后发送第二信号,其中第一网络设备发送第一信号和发送第二信号所采用的资源不同,使得第一网络设备在进行小区选择前,能够使提供网络接入能力的第二网络设备获知第一网络设备的相关信息,从而使得第二网络设备可以根据第一网络设备的相关信息向第一网络设备发送有助于第一网络设备进行小区选择的第三信号,从而提高了第一网络设备进行小区选择的成功率,进而提高了第一网络设备的接入成功率。
进一步地,在图2和图3所示实施例中,还包括:第一信号和第二信号正交。第一信号和第二信号正交,可以避免第一信号和第二信号之间的干扰,从而可以确保第一信号和第二信号都能够被第二网络设备接收到,从而进一步地提高第一网络设备进行小区选择的成功率。
图4为本发明实施例提供的信号传输方法实施例三的流程图,如图4所示,本实施例的方法包括:
步骤S401,第二网络设备接收第一网络设备在进行小区选择前发送的第一信号。
具体地,根据图1所示的LTE初始接入流程可知,在初始接入流程中,UE向基站发送的第一个信号为随机接入信号,并且,该随机接入信号为UE在检测到基站发送的同步信号之后,完成了小区的选择后才发送的。从而才会产生UE无法接收基站发送的同步信号而无法完成接入的问题。
而本实施例中,第二网络设备在第一网络设备进行小区选择前,就先接收了第一网络设备发送的第一信号,也就是说,第一网络设备在确定接入的小区之前,以及发送随机接入信号之前,先向第二网络设备发送了一个第一信号。该第一信号的作用就是让第二网络设备获知第一网络设备所处的方位,从而第二网络设备可以调整波束使第一网络设备接收到第二网络设备发送的相关信号。
第二网络设备可以在第一网络设备进行小区选择前的任意时刻接收第一网络设备发送的第一信号。第一网络设备进行小区选择表示第一网络设备确定接入的小区或驻留的小区。第一网络设备在开机的状态下,在网络中有连接态(CONNECTED)和空闲态(IDLE)两种状态。图1所示的接入流程示出的是第一网络设备进入连接态的情况,若第一网络设备需要进入空闲态,则第一网络设备在步骤S103之后,将结束接入流程,仅驻留在初选后的小区中。由此可见,不论第一网络设备需要转入连接态还是空闲态,第一网络设备发送第一信号的目的都是为了进行小区选择。
第二网络设备可以在向第一网络设备发送同步信号之前就接收第一网络设备发送的第一信号,此时第二网络设备可以根据第一信号获知第一网络设备的方位等相关信息,从而可以使第二网络设备发送的同步信号确保第一网络设备接收到。第二网络设备还可以在向第一网络设备发送同步信号之后,但在第一网络设备进行小区选择前接收第一网络设备发送的第一信号。由于第二网络设备除了向第一网络设备发送同步信号之外,在第一网络设备接入之前,第二网络设备还需要发送测量导频、广播信道、***信息等信息,其中第一网络设备需要通过对第二网络设备发送的测量导频进行测量从而进行小区选择。而若第一网络设备检测到第二网络设备发送的同步信号,但是未检测到第二网络设备发送的测量导频等信号,还是无法进行接入。因此第二网络设备在向第一网络设备发送同步信号之后,但在第一网络设备进行小区选择前接收第一网络设备发送的第一信号,可以使第二网络设备确定测量导
频等信号的发送波束。
步骤S402,第二网络设备接收第一网络设备在进行小区选择后发送的第二信号,第二网络设备接收第一信号和接收第二信号采用的资源不同,并且第二信号为随机接入信号。
具体地,当第一网络设备进行了小区选择后,即第一网络设备确定了接入的小区后,即可进行后续接入流程。第二网络设备接收到第一网络设备发送的第二信号,即可继续进行第一网络设备的后续接入流程,其中,第二信号为随机接入信号。
第二网络设备接收到第一网络设备发送的第一信号后,可以通过第一信号获知第一网络设备的相关信息,从而第二网络设备可以向第一网络设备发送有助于第一网络设备进行小区选择的信息,因此第一网络设备将能够更好地进行小区选择。
第二网络设备接收第一信号和接收第二信号所采用的资源不同,也就是说,第二网络设备接收第一信号所使用的资源和随机接入信号不同。第二网络设备可以使用专用的资源接收第一信号,这样第二网络设备就可以在不同的资源上分别接收第一信号和第二信号。为第一信号分配专用的资源可以避免第一信号和第二信号的冲突,从而保证第二网络设备能够正确接收到第一信号,提高了第一网络设备进行小区选择的成功率。
本实施例,第二网络设备接收第一网络设备在进行小区选择前发送的第一信号,然后接收第一网络设备在进行小区选择后发送的第二信号,其中第二网络设备接收第一信号和接收第二信号所采用的资源不同,使得第一网络设备在进行小区选择前,能够使提供网络接入能力的第二网络设备获知第一网络设备的相关信息,从而使得第二网络设备可以根据第一网络设备的相关信息向第一网络设备发送有助于第一网络设备进行小区选择的信息,从而提高了第一网络设备进行小区选择的成功率,进而提高了第一网络设备的接入成功率。
需要说明的是,在图4所示实施例中第二网络设备接收第一信号和接收第二信号所采用的资源不同,包括:第二网络设备接收第一信号和接收第二信号所采用的码字资源不同,或者第二网络设备接收第一信号和接收第二信号所采用的时间资源不同,或者第二网络设备接收第一信号和接收第二信号
所采用的频率资源不同,或者第二网络设备接收第一信号和接收第二信号所采用的时频资源不同。
具体地,第二网络设备接收第一信号和接收第二信号的资源不同可以从多个角度而言。其中,第二网络设备接收第一信号和接收第二信号所采用的码字资源不同,可以是第二网络设备接收的第一信号和接收的第二信号采用不同的序列。第二网络设备接收第一信号和接收第二信号所采用的时间资源不同,可以是第二网络设备在不同的子帧接收第一信号和接收第二信号,或者在不同的时刻接收第一信号和接收第二信号,或者接收第一信号和接收第二信号的周期不同。第二网络设备接收第一信号和接收第二信号所采用的频率资源不同,可以是第二网络设备在相同频段的不同的频点接收第一信号和接收第二信号,或者在不同频段的载波上接收第一信号和接收第二信号。第二网络设备接收第一信号和接收第二信号所采用的时频资源不同,可以是第二网络设备在不同的资源块(block)上接收第一信号和接收第二信号。
可选地,在图4所示实施例的步骤S401之前,还包括:第二网络设备向第一网络设备发送多播信号,所述多播信号包括第一序列组,第一序列组为第二网络设备所属第二网络设备组特定的,第一信号从第一序列组中选择,第一序列组中包括至少一个序列。
具体地,第二网络设备接收第一信号所使用的序列可以是第一网络设备从第一序列组中选择的。第一序列组为提供第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的。当第一网络设备需要进行小区选择时,由于可能存在若干可供第一网络设备接入的小区,也就是可能存在若干个提供可供第一网络设备接入的小区的第二网络设备,那么第一网络设备在确定需要接入的小区时,可能存在对多个可供接入的小区的选择。一般而言,一个区域的第二网络设备可能为同一区域的第一网络设备提供接入服务,一个区域的第二网络设备可以作为一个第二网络设备组。第一网络设备在发送第一信号时,由于还未进行小区选择,也就是没有确定需要接入的第二网络设备,因此第一网络设备可以从第二网络设备组特定的一个第一序列组中选择一个序列作为第一信号的序列发送。由于第一序列组是第二网络设备组特定的,那么第二网络设备组中的各第二网络设备都可以接收并解析该第一信号,从而第二网络设备组中的各第二网络设备都可以针对该第一信号向第一
网络设备发送相关信息,以便第一网络设备根据各第二网络设备发送的信息进行小区选择。第一序列组可以是若干个序列的集合,其中包括至少一个序列。
当第一网络设备从第一序列组中确定一个序列作为第一信号的序列进行发送时,其中第一序列组为提供第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的。那么第二网络设备在接收第一网络设备发送的第一信号之前,还需要向第一网络设备发送第一序列组,第一序列组是通过多播信号确定的,该多播信号是第二网络设备组中的至少两个第二网络设备同时进行发送的。其中,多播发送表示第二网络设备组中的各第二网络设备都发送该第一序列组。第二网络设备组中的各网络设备发送的多播信号能够在第一网络设备接入前,以及发送第一信号前,被第一网络设备接收到,因此第一网络设备可以在获取第二网络设备组中的至少两个第二网络设备发送的多播信号后,再发送第一信号。
图5为本发明实施例提供的信号传输方法实施例四的流程图,如图5所示,本实施例的方法包括:
步骤S501,第二网络设备接收第一网络设备在进行小区选择前发送的第一信号。
步骤S502,第二网络设备根据第一信号生成第三信号。
步骤S503,第二网络设备向第一网络设备发送第三信号,第三信号用于使第一网络设备进行小区选择。
具体地,第一网络设备发送第一信号的目的是更好地进行小区选择,在第一网络设备所处区域,可能有至少一个第二网络设备具备提供网络服务的能力,将第一网络设备所处区域具备提供网络服务能力的第二网络设备成为第二网络设备组。第一网络设备发送的第一信号能够被第二网络设备组中的至少一个第二网络设备接收到。接收到第一信号的第二网络设备若能够为第一网络设备提供接入服务,则为了使第一网络设备进行小区选择,将向第一网络设备发送第三信号。第二网络设备根据接收到的第一信号可以获知第一网络设备的相关信息,从而可以根据第一信号生成第三信号。第三信号的作用是使第一网络设备进行小区选择,第三信号可以为同步信号,或者第三信号还可以是测量导频、广播信号等信号。
步骤S504,第二网络设备接收第一网络设备在进行小区选择后发送的第二信号,第二网络设备接收第一信号和接收第二信号采用的资源不同,并且第二信号为随机接入信号。
本实施例,第二网络设备接收第一网络设备在进行小区选择前发送的第一信号,然后第二网络设备根据第一信号生成第三信号并发送至第一网络设备,并在接收第一网络设备在进行小区选择后发送的第二信号,其中第一网络设备发送第一信号和发送第二信号所采用的资源不同,使得第一网络设备在进行小区选择前,能够使提供网络接入能力的第二网络设备获知第一网络设备的相关信息,从而使得第二网络设备可以根据第一网络设备的相关信息向第一网络设备发送有助于第一网络设备进行小区选择的第三信号,从而提高了第一网络设备进行小区选择的成功率,进而提高了第一网络设备的接入成功率。
进一步地,在图5所示实施例中,第二网络设备发送第三信号的时频资源是可变的。第二网络设备发送第三信号的周期是可变的。也就是说,第二网络设备可以根据需要发送第三信号,由于第二网络设备向第一网络设备发送第三信号的目的是为了使第一网络设备进行小区选择,而第三信号又是根据第一信号生成的,因此,当第二网络设备接收到第一信号后,获取了第一网络设备的相关信息后,可以在第一网络设备能够接收第三信号的时频资源和/或周期上向第一网络设备发送第三信号。
进一步地,根据图1所示的接入流程可知,在UE进行了小区的初选后,还需要检测广播信号,广播信号也是基站发送的。因此,在图4和图5所示实施例中,第二网络设备接收第一网络设备在进行小区选择后发送的第二信号之前,还包括:第二网络设备向第一网络设备发送第四信号,第四信号为广播信号。第二网络设备向第一网络设备发送广播信号是为了使第一网络设备检测小区的***消息,从而可以发起随机接入,也就是发送第二信号。第二网络设备发送广播信号的时频资源是可变的。第二网络设备发送广播信号的周期是可变的。
进一步地,在图4和图5所示实施例中,还包括:第一信号和第二信号正交。第一信号和第二信号正交,可以避免第一信号和第二信号之间的干扰,从而可以确保第一信号和第二信号都能够被第二网络设备接收到,从而进一
步地提高第一网络设备进行小区选择的成功率。
图6为本发明实施例提供的网络设备实施例一的结构示意图,本实施例的网络设备为第一网络设备,如图6所示,本实施例的网络设备包括:
发送模块61,用于在进行小区选择前发送第一信号。
处理模块62,用于进行小区选择。
发送模块61,还用于在处理模块62进行小区选择后发送第二信号,发送模块61发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
本实施例的网络设备用于执行图2所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
进一步地,在图6所示实施例中,发送模块61发送第一信号和发送第二信号所采用的资源不同,包括:发送模块61发送所述第一信号和发送所述第二信号所采用的码字资源不同,或者发送模块61发送所述第一信号和发送所述第二信号所采用的时间资源不同,或者发送模块61发送所述第一信号和发送所述第二信号所采用的频率资源不同,或者发送模块61发送所述第一信号和发送所述第二信号所采用的时频资源不同。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组为提供所述第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,所述第一序列组中包括至少一个序列。
进一步地,在图6所示实施例中,所述第一序列组是通过多播信号确定的,所述多播信号是所述第二网络设备组中的至少两个第二网络设备同时进行发送的。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是通过所述第一网络设备的特定标识确定的,所述特定标识包括IMSI或者TMSI。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是预定义的。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前在特定的频域资源上发送所述第一信号。
进一步地,在图6所示实施例中,所述特定的频域资源包括:所述第一网络设备支持的所有频带内的特定频域资源。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前在特定的时间资源上发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前在第一时间段内重复发送所述第一信号;发送模块61,还用于在第二时间段内停止发送所述第一信号,所述第一时间段和所述第二时间段为预定义的。
进一步地,在图6所示实施例中,发送模块61,具体用于若所述第一网络设备进行随机接入失败,并且所述第一网络设备在进行所述小区选择前,则在特定的时间资源上发送所述第一信号;发送模块61,还用于若所述第一网络设备进行随机接入成功,则停止发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前且在检测同步信号前发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前且在检测广播信号前发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前且在检测同步信号后,以及检测广播信号前发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61体用于在处理模块62进行小区选择前且在检测同步信号后,以及检测广播信号后发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61体用于在处理模块62进行小区选择前且在对公共导频信号进行测量后发送所述第一信号。
进一步地,在图6所示实施例中,发送模块61,具体用于在处理模块62进行小区选择前且在对导频信号进行测量后发送所述第一信号。
图7为本发明实施例提供的网络设备实施例二的结构示意图,如图7所示,本实施例的网络设备在图6的基础上,还包括:
接收模块63,用于在发送模块61在进行小区选择后发送第二信号之前,
接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号。
处理模块62,具体用于根据所述至少一个第三信号进行小区选择。
进一步地,在图7所示实施例中,处理模块62,具体用于对所述至少一个第三信号进行测量,选择信号质量最好的第三信号对应的第二网络设备所提供的小区。
进一步地,在图6或图7所示实施例中,第一信号和所述第二信号正交。
图8为本发明实施例提供的网络设备实施例三的结构示意图,本实施例的网络设备为第二网络设备,如图8所示,本实施例的网络设备包括:
接收模块81,用于接收第一网络设备在进行小区选择前发送的第一信号;接收所述第一网络设备在进行小区选择后发送的第二信号,接收模块81接收所述第一信号和接收所述第二信号采用的资源不同,并且所述第二信号为随机接入信号。
本实施例的网络设备用于执行图4所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
进一步地,在图8所示实施例中,接收模块81接收所述第一信号和接收所述第二信号采用的资源不同,包括:接收模块81接收所述第一信号和接收所述第二信号所采用的码字资源不同,或者接收模块81接收所述第一信号和接收所述第二信号所采用的时间资源不同,或者接收模块81接收所述第一信号和接收所述第二信号所采用的频率资源不同,或者接收模块81接收所述第一信号和接收所述第二信号所采用的时频资源不同。
图9为本发明实施例提供的网络设备实施例四的结构示意图,如图9所示,本实施例的网络设备在图8的基础上,还包括:
发送模块82,用于在接收模块81接收第一网络设备在进行小区选择前发送的第一信号之前,向所述第一网络设备发送多播信号,所述多播信号包括第一序列组,所述第一序列组为所述第二网络设备所属第二网络设备组特定的,所述第一信号从所述第一序列组中选择,所述第一序列组中包括至少一个序列。
图10为本发明实施例提供的网络设备实施例五的结构示意图,如图10所示,本实施例的网络设备在图9的基础上,还包括:
处理模块83,用于在接收模块81接收所述第一网络设备在进行小区选
择后发送的第二信号之前,根据所述第一信号生成第三信号。
发送模块82,还用于向所述第一网络设备发送所述第三信号,所述第三信号用于使所述第一网络设备进行小区选择。
进一步地,在图10所示实施例中,发送模块82发送所述第三信号的时频资源是可变的。
进一步地,在图10所示实施例中,发送模块82发送所述第三信号的周期是可变的。
进一步地,在图9或图10所示实施例中,发送模块82,还用于在接收模块81接收所述第一网络设备在进行小区选择后发送的第二信号之前,向所述第一网络设备发送第四信号,所述第四信号为广播信号。
进一步地,在图9或图10所示实施例中,发送模块82发送所述广播信号的时频资源是可变的。
进一步地,在图9或图10所示实施例中,发送模块82发送所述广播信号的周期是可变的。
进一步地,在图8至图10所示实施例中,所述第一信号和所述第二信号正交。
需要说明的是,本发明实施例中的发送模块61可以与网络设备的发送器对应,也可以对应网络设备的收发器。接收模块63可以与网络设备的接收器对应,也可以对应网络设备的收发器。处理模块62可以与网络设备中的处理器对应,这里处理器可以是一个中央处理器(Central Processing Unit,CPU),或者是特定集成电路(Application Specific Integrated Circuit,ASIC),或者完成实施本发明实施例的一个或多个集成电路。网络设备还可以包括存储器,存储器用于存储指令代码,处理器调用存储器的指令代码,控制本发明实施例中的发送模块61和接收模块63执行上述操作。
本发明实施例中的接收模块81可以与网络设备的发送器对应,也可以对应网络设备的收发器。发送模块82可以与网络设备的接收器对应,也可以对应网络设备的收发器。处理模块83可以与网络设备的处理器对应,这里处理器可以是一个CPU,或者是ASIC,或者完成实施本发明实施例的一个或多个集成电路。网络设备还可以包括存储器,存储器用于存储指令代码,处理器调用存储器的指令代码,控制本发明实施例中的接收模块81和发送模块
82执行上述操作。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换。因此,本发明的保护范围应以权利要求的保护范围为准。
Claims (60)
- 一种信号传输方法,其特征在于,包括:第一网络设备在进行小区选择前发送第一信号;所述第一网络设备在进行所述小区选择后发送第二信号,所述第一网络设备发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
- 根据权利要求1所述的方法,其特征在于,所述采用的资源不同,包括以下之一:采用的码字资源不同;采用的时间资源不同;采用的频率资源不同;以及采用的时频资源不同。
- 根据权利要求1或2所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组为提供所述第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,所述第一序列组中包括至少一个序列。
- 根据权利要求3所述的方法,其特征在于,所述第一序列组是通过多播信号确定的,所述多播信号是所述第二网络设备组中的至少两个第二网络设备同时进行发送的。
- 根据权利要求1或2所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是通过所述第一网络设备的特定标识确定的,所述特定标识包括国际移动用户识别码IMSI或者临时识别码TMSI。
- 根据权利要求1或2所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前从第一序列组中确定一个序列 作为所述第一信号的序列进行发送,所述第一序列组是预定义的。
- 根据权利要求1~6任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:第一网络设备在进行所述小区选择前在特定的频域资源上发送所述第一信号。
- 根据权利要求7所述的方法,其特征在于,所述特定的频域资源包括:所述第一网络设备支持的所有频带内的特定频域资源。
- 根据权利要求1~8任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号。
- 根据权利要求9所述的方法,其特征在于,所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号,包括:所述第一网络设备在进行所述小区选择前在第一时间段内重复发送所述第一信号;所述方法还包括:所述第一网络设备在第二时间段内停止发送所述第一信号,所述第一时间段和所述第二时间段为预定义的。
- 根据权利要求9所述的方法,其特征在于,所述第一网络设备在进行所述小区选择前在特定的时间资源上发送所述第一信号,包括:若所述第一网络设备进行随机接入失败,并且所述第一网络设备在进行所述小区选择前,则所述第一网络设备在特定的时间资源上发送所述第一信号;所述方法还包括:若所述第一网络设备进行随机接入成功,则所述第一网络设备停止发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在检测同步信号前发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网 络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在检测广播信号前发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在检测同步信号后,以及检测广播信号前发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在检测同步信号后,以及检测广播信号后发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在对公共导频信号进行测量后发送所述第一信号。
- 根据权利要求1~11任一项所述的方法,其特征在于,所述第一网络设备在进行小区选择前发送第一信号,包括:所述第一网络设备在进行所述小区选择前且在对导频信号进行测量后发送所述第一信号。
- 根据权利要求1~17任一项所述的方法,其特征在于,所述第一网络设备在进行所述小区选择后发送第二信号之前,还包括:所述第一网络设备接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号;所述第一网络设备根据所述至少一个第三信号进行所述小区选择。
- 根据权利要求18所述的方法,其特征在于,所述第一网络设备根据所述至少一个第三信号进行所述小区选择,包括:所述第一网络设备对所述至少一个第三信号进行测量,选择信号质量最好的第三信号对应的第二网络设备所提供的小区。
- 根据权利要求1~19任一项所述的方法,其特征在于,所述第一信号和所述第二信号正交。
- 一种信号传输方法,其特征在于,包括:第二网络设备接收第一网络设备在进行小区选择前发送的第一信号;所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号,所述第二网络设备接收所述第一信号和接收所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
- 根据权利要求21所述的方法,其特征在于,所述采用的资源不同,包括以下之一:采用的码字资源不同;采用的时间资源不同;采用的频率资源不同;以及采用的时频资源不同。
- 根据权利要求21或22所述的方法,其特征在于,所述第二网络设备接收第一网络设备在进行小区选择前发送的第一信号之前,还包括:所述第二网络设备向所述第一网络设备发送多播信号,所述多播信号包括第一序列组,所述第一序列组为所述第二网络设备所属第二网络设备组特定的,所述第一信号从所述第一序列组中选择,所述第一序列组中包括至少一个序列。
- 根据权利要求21~23任一项所述的方法,其特征在于,所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,还包括:所述第二网络设备根据所述第一信号生成第三信号;所述第二网络设备向所述第一网络设备发送所述第三信号,所述第三信号用于使所述第一网络设备进行所述小区选择。
- 根据权利要求24所述的方法,其特征在于,所述第二网络设备发送所述第三信号的时频资源是可变的。
- 根据权利要求24或25所述的方法,其特征在于,所述第二网络设备发送所述第三信号的周期是可变的。
- 根据权利要求21~26任一项所述的方法,其特征在于,所述第二网络设备接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,还包括:所述第二网络设备向所述第一网络设备发送第四信号,所述第四信号为广播信号。
- 根据权利要求27所述的方法,其特征在于,所述第二网络设备发送所述广播信号的时频资源是可变的。
- 根据权利要求27或28所述的方法,其特征在于,所述第二网络设备发送所述广播信号的周期是可变的。
- 根据权利要求21~29任一项所述的方法,其特征在于,所述第一信号和所述第二信号正交。
- 一种网络设备,其特征在于,所述网络设备为第一网络设备,所述网络设备包括:发送模块,用于在进行小区选择前发送第一信号;处理模块,用于进行小区选择;所述发送模块,还用于在所述处理模块进行所述小区选择后发送第二信号,所述发送模块发送所述第一信号和发送所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
- 根据权利要求31所述的网络设备,其特征在于,所述采用的资源不同,包括以下之一:采用的码字资源不同;采用的时间资源不同;采用的频率资源不同;以及采用的时频资源不同。
- 根据权利要求31或32所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组为提供所述第一网络设备待选择的小区的第二网络设备所属第二网络设备组特定的,所述第一序列组中包括至少一个序列。
- 根据权利要求33所述的网络设备,其特征在于,所述第一序列组是通过多播信号确定的,所述多播信号是所述第二网络设备组中的至少两个第二网络设备同时进行发送的。
- 根据权利要求31或32所述的网络设备,其特征在于,所述发送模 块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是通过所述第一网络设备的特定标识确定的,所述特定标识包括国际移动用户识别码IMSI或者临时识别码TMSI。
- 根据权利要求31或32所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前从第一序列组中确定一个序列作为所述第一信号的序列进行发送,所述第一序列组是预定义的。
- 根据权利要求31~36任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前在特定的频域资源上发送所述第一信号。
- 根据权利要求37所述的网络设备,其特征在于,所述特定的频域资源包括:所述第一网络设备支持的所有频带内的特定频域资源。
- 根据权利要求31~38任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前在特定的时间资源上发送所述第一信号。
- 根据权利要求39所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前在第一时间段内重复发送所述第一信号;所述发送模块,还用于在第二时间段内停止发送所述第一信号,所述第一时间段和所述第二时间段为预定义的。
- 根据权利要求39所述的网络设备,其特征在于,所述发送模块,具体用于若所述第一网络设备进行随机接入失败,并且所述第一网络设备在进行所述小区选择前,则在特定的时间资源上发送所述第一信号;所述发送模块,还用于若所述第一网络设备进行随机接入成功,则停止发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号前发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发 送模块,具体用于在所述处理模块进行所述小区选择前且在检测广播信号前发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号后,以及检测广播信号前发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在检测同步信号后,以及检测广播信号后发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在对公共导频信号进行测量后发送所述第一信号。
- 根据权利要求31~41任一项所述的网络设备,其特征在于,所述发送模块,具体用于在所述处理模块进行所述小区选择前且在对导频信号进行测量后发送所述第一信号。
- 根据权利要求31~47任一项所述的网络设备,其特征在于,还包括:接收模块,用于在所述发送模块在进行所述小区选择后发送第二信号之前,接收第二网络设备组中至少一个第二网络设备发送的至少一个第三信号;所述处理模块,具体用于根据所述至少一个第三信号进行所述小区选择。
- 根据权利要求48所述的网络设备,其特征在于,所述处理模块,具体用于对所述至少一个第三信号进行测量,选择信号质量最好的第三信号对应的第二网络设备所提供的小区。
- 根据权利要求31~49任一项所述的网络设备,其特征在于,所述第一信号和所述第二信号正交。
- 一种网络设备,其特征在于,所述网络设备为第二网络设备,所述网络设备包括:接收模块,用于接收第一网络设备在进行小区选择前发送的第一信号;接收所述第一网络设备在进行所述小区选择后发送的第二信号,所述接收模块接收所述第一信号和接收所述第二信号所采用的资源不同,并且所述第二信号为随机接入信号。
- 根据权利要求51所述的网络设备,其特征在于,所述采用的资源不 同,包括以下之一:采用的码字资源不同;采用的时间资源不同;采用的频率资源不同;以及采用的时频资源不同。
- 根据权利要求51或52所述的网络设备,其特征在于,还包括:发送模块,用于在所述接收模块接收第一网络设备在进行所述小区选择前发送的第一信号之前,向所述第一网络设备发送多播信号,所述多播信号包括第一序列组,所述第一序列组为所述第二网络设备所属第二网络设备组特定的,所述第一信号从所述第一序列组中选择,所述第一序列组中包括至少一个序列。
- 根据权利要求51~53任一项所述的网络设备,其特征在于,还包括:处理模块,用于在所述接收模块接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,根据所述第一信号生成第三信号;所述发送模块,还用于向所述第一网络设备发送所述第三信号,所述第三信号用于使所述第一网络设备进行所述小区选择。
- 根据权利要求54所述的网络设备,其特征在于,所述发送模块发送所述第三信号的时频资源是可变的。
- 根据权利要求54或55所述的网络设备,其特征在于,所述发送模块发送所述第三信号的周期是可变的。
- 根据权利要求51~56任一项所述的网络设备,其特征在于,所述发送模块,还用于在所述接收模块接收所述第一网络设备在进行所述小区选择后发送的第二信号之前,向所述第一网络设备发送第四信号,所述第四信号为广播信号。
- 根据权利要求57所述的网络设备,其特征在于,所述发送模块发送所述广播信号的时频资源是可变的。
- 根据权利要求57或58所述的网络设备,其特征在于,所述发送模块发送所述广播信号的周期是可变的。
- 根据权利要求51~59任一项所述的网络设备,其特征在于,所述第一信号和所述第二信号正交。
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CN101730257A (zh) * | 2008-10-13 | 2010-06-09 | 大唐移动通信设备有限公司 | 信号发送方法及设备、***随机接入方法及用户设备 |
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