CN109803317B

CN109803317B - Communication method and device

Info

Publication number: CN109803317B
Application number: CN201711148387.5A
Authority: CN
Inventors: 李秉肇; 徐海博; 曹振臻; 王学龙
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2022-06-24
Anticipated expiration: 2037-11-17
Also published as: CN109803317A

Abstract

The embodiment of the application provides a communication method and a communication device, wherein a first uplink carrier or a second uplink carrier is selected as an uplink access carrier based on measurement of a downlink reference signal and a measurement threshold, wherein the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters; and determining whether to allow the network to be accessed through the uplink access carrier according to the access control parameter corresponding to the uplink access carrier. By the communication method and the communication device, congestion can be avoided.

Description

Communication method and device

Technical Field

The present disclosure relates to communications technologies, and in particular, to a communication method and apparatus.

Background

Currently, there are various systems for communication, such as second generation (2G), third generation (3G), fourth generation (4G) communication systems and New Radio (NR) Access networks, such as Global System for Mobile communication (GSM) System, Code Division Multiple Access (CDMA) System, Time Division Multiple Access (TDMA) System, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, WCDMA) System, Orthogonal Frequency Division Multiple Access (Orthogonal Frequency-Division Multiple Access, OFDMA) System, FDMA (SC-FDMA) System, General Packet Radio Service (General Packet Radio Service, Service) System, Long Term Evolution (Long Term Evolution) System, LTE System, and single carrier Radio (LTE) System, among other things, the new radio access network, also referred to as a 5G network, a next generation communication network, etc., allows to provide higher transmission rates than the LTE network.

A conventional cell is composed of one downlink carrier and one uplink carrier, and the frequency of the uplink carrier is the same as or similar to that of the downlink carrier in the conventional cell.

The current spectrum resource is difficult to meet the increase of the capacity demand of the user, and under the condition of lacking frequency band resources, the high-frequency band with larger available bandwidth is called as a candidate frequency band of a 5G system; meanwhile, in order to meet the requirements of signal transmission coverage and high communication quality of most users (especially edge users), in a 5G system, it is desirable to use a low frequency band for uplink transmission.

When a high-frequency cell is deployed in a New Radio (NR), an operating frequency band in the high-frequency cell is higher and a transmission power of a terminal is lower, so that a terminal in a cell edge region can receive a signal of a base station in the cell, but the base station cannot receive the signal of the terminal in the edge region, that is, the uplink coverage and the downlink coverage are asymmetric. In order to solve the problem, an additional lower-frequency uplink band may be introduced outside an original high-frequency uplink band of a cell to transmit an uplink signal, for convenience of description, the lower-frequency uplink band is called a Supplemental Uplink (SUL) carrier or an auxiliary uplink carrier, and the high-frequency uplink band is called a Primary Uplink (PUL) carrier or a non-auxiliary uplink (non-SUL) carrier.

When the terminal resides in an area covered by both the high-frequency uplink band and the lower-frequency uplink band, if the terminal receives a page or the terminal itself needs to initiate a service, network congestion is easily caused.

Disclosure of Invention

Aspects of the present invention provide a plurality of communication methods and communication apparatuses that can avoid network congestion as much as possible.

A first aspect of the present application provides a communication method, including: selecting a first uplink carrier or a second uplink carrier as an uplink access carrier based on measurement of a downlink reference signal and a measurement threshold, wherein the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters; and determining whether to allow the network to be accessed through the uplink access carrier according to the access control parameter corresponding to the uplink access carrier.

In a possible implementation manner, if the first uplink carrier is selected as the uplink access carrier and it is determined that the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, it is determined whether the network is allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier; alternatively, the first and second electrodes may be,

and if the second uplink carrier is selected as the uplink access carrier and the network is not allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier, determining whether the network is allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier.

In one possible implementation, the measurement threshold is obtained from a network device through a broadcast channel or a dedicated channel; or, pre-configuring the measurement threshold.

In a possible implementation manner, the measurement threshold is a threshold that allows the first uplink carrier or the second uplink carrier to be selected as the uplink access carrier.

In a possible implementation manner, the downlink reference signal includes a synchronization signal and/or a channel state information reference signal CSI-RS, and the method further includes: receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or CSI-RS are measured; and measuring the signals indicated by the configuration information according to the configuration information.

Another aspect of the present application provides a communication apparatus, including: at least one processor and at least one memory for storing one or more computer instructions or code which, when executed by the at least one processor, is configured to perform: selecting a first uplink carrier or a second uplink carrier as an uplink access carrier based on measurement of a downlink reference signal and a measurement threshold, wherein the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters; and determining whether to allow the uplink access carrier to access the network according to the access control parameters corresponding to the uplink access carrier.

In one possible implementation, the at least one processor is further configured to: if the first uplink carrier is selected as the uplink access carrier and the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, determining whether the network is allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier; or, if the second uplink carrier is selected as the uplink access carrier and it is determined that the second uplink carrier is not allowed to access the network according to the access control parameter corresponding to the second uplink carrier, it is determined whether the first uplink carrier is allowed to access the network according to the access control parameter corresponding to the first uplink carrier.

In a possible implementation manner, the communication apparatus further includes a transceiver configured to obtain the measurement threshold from a network device through a broadcast channel or a dedicated channel; or, the at least one processor is further configured to pre-configure the measurement threshold.

In one possible implementation manner, the downlink reference signal includes a synchronization signal and/or a channel state information reference signal CSI-RS, and the communication apparatus further includes: a transceiver for receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or CSI-RS are measured; the at least one processor is further configured to measure a signal indicated by the configuration information according to the configuration information.

Another aspect of the present application provides a communication method, including: comparing the measurement result of the downlink reference signal with a carrier factor selection threshold, wherein the carrier factor selection threshold is a threshold allowing the use of the carrier factor; and when the measurement result is greater than or equal to the carrier factor selection threshold, selecting a first uplink carrier or a second uplink carrier according to the carrier factor selection threshold to initiate network access, wherein the carrier factor selection threshold is used for indicating the threshold for selecting the first uplink carrier or the second uplink carrier.

In one possible implementation, a system broadcast message or a dedicated message is received from the network, the system broadcast message or dedicated message including the carrier selection factor.

In one possible implementation, the carrier factor selection threshold is obtained from a network device through a broadcast channel or a dedicated channel; or, pre-configuring the carrier factor selection threshold.

In one possible implementation manner, the downlink reference signal includes: a synchronization signal and/or a channel state information reference signal, CSI-RS, the method further comprising: receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or an iso-CSI-RS are measured; and measuring the signals indicated by the configuration information according to the configuration information.

Another aspect of the present application provides a communication apparatus, including: at least one processor and at least one memory for storing one or more computer instructions or code which, when executed by the at least one processor, is configured to perform: comparing the measurement result of the downlink reference signal with a carrier factor selection threshold, wherein the carrier factor selection threshold is a threshold allowing the carrier factor to be used; and when the measurement result is greater than or equal to the carrier factor selection threshold, selecting a first uplink carrier or a second uplink carrier according to the carrier factor selection threshold to initiate network access, wherein the carrier factor selection threshold is used for indicating the threshold for selecting the first uplink carrier or the second uplink carrier.

In one possible implementation, the apparatus further includes: a transceiver for receiving a system broadcast message or a dedicated message from the network, the system broadcast message or dedicated message including the carrier selection factor.

In a possible implementation manner, the transceiver is further configured to obtain the carrier factor selection threshold from a network device through a broadcast channel or a dedicated channel; or, the processor is further configured to pre-configure the carrier factor selection threshold.

In one possible implementation manner, the downlink reference signal includes: a synchronization signal and/or a channel state information reference signal, CSI-RS, the apparatus further comprising: a transceiver for receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or an equal CSI-RS are measured; the at least one processor is further configured to measure a signal indicated by the configuration information according to the configuration information.

Another aspect of the present application provides a communication method, including: receiving Physical Uplink Control Channel (PUCCH) resource configuration information of a first uplink carrier or a second uplink carrier from a network, wherein the first uplink carrier and the second uplink carrier belong to the same cell; and initiating access from an uplink carrier corresponding to the PUCCH resource according to the access parameter configuration information corresponding to the uplink carrier.

Another aspect of the present application provides a communication apparatus, including: at least one processor and at least one memory for storing one or more computer instructions or code which, when executed by the at least one processor, is configured to perform: receiving Physical Uplink Control Channel (PUCCH) resource configuration information of a first uplink carrier or a second uplink carrier from a network, wherein the first uplink carrier and the second uplink carrier belong to the same cell; and initiating access on an uplink carrier corresponding to the PUCCH resource according to the access parameter configuration information corresponding to the uplink carrier.

Another aspect of the application provides a computer-readable medium for storing a computer program comprising instructions for performing the method in any possible implementation of any of the above aspects.

Another aspect of the present application provides a computer program product comprising: computer program code which, when executed by a communication unit, processing unit or transceiver, processor of a communication device (e.g. a terminal device or a network device), causes the communication device to perform the method of any possible implementation of any of the above aspects.

Another aspect of the present application provides a communication chip having instructions stored therein, which when run on a communication device, cause the communication chip to perform a method of any possible implementation of any of the above aspects.

Another aspect of the present application provides a communication system, which includes the above terminal device and network device.

The communication method and the communication device can avoid network congestion as much as possible.

Drawings

Fig. 1 is a schematic structural diagram of a possible radio access network according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a communication system according to another embodiment of the present application;

fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a communication method according to another embodiment of the present application;

fig. 6 is a flowchart illustrating a communication method according to another embodiment of the present application;

fig. 7 is a flowchart illustrating a communication method according to another embodiment of the present application.

Fig. 8 is a schematic structural diagram of a communication system according to another embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to another embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to another embodiment of the present application.

Detailed Description

Some terms in the present application will be described below.

The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Reference herein to a "module" generally refers to a program or instructions stored in memory that allows certain functions to be performed; reference herein to "a unit" generally refers to a logically partitioned work-enabling structure, which may be implemented by pure hardware or a combination of hardware and software.

Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Fig. 1 shows a schematic structural diagram of a possible Radio Access Network (RAN) according to an embodiment of the present invention. The RAN includes one or more network devices 20. The radio access network may be connected to a Core Network (CN). The network device 20 may be any device having a wireless transceiving function. The network devices 20 include, but are not limited to: a base station (e.g. a base station BS, a base station NodeB, an evolved base station eNodeB or eNB, a base station gdnodeb or gNB in a fifth generation 5G communication system, a base station in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node), etc. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, etc. A network, or future evolution network, in which multiple base stations may support one or more of the technologies mentioned above. The core network may support a network of one or more of the above mentioned technologies, or a future evolution network. A base station may contain one or more Transmission Receiving Points (TRPs) that are co-sited or non-co-sited. The network device 20 may also be a wireless controller, a Centralized Unit (CU), a Distributed Unit (DU), or the like in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a server, a wearable device, or a vehicle mounted device, etc. The following description will be given taking the network device 20 as a base station as an example. The plurality of network devices 20 may be base stations of the same type or different types. The base station may communicate with the terminal 10, or may communicate with the terminal 10 through a relay station. The terminal 10 may support communication with multiple base stations of different technologies, e.g., the terminal may support communication with a base station supporting an LTE network, may support communication with a base station supporting a 5G network, and may support dual connectivity with a base station of an LTE network and a base station of a 5G network.

A terminal, also referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, such as a handheld device, a vehicle-mounted device, etc., with wireless connectivity. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in intelligent grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like.

A network device is a device in a wireless network, such as a Radio Access Network (RAN) node that accesses a terminal to the wireless network. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node.

The RAN may be a base station access system of a 2G network (i.e. the RAN comprises base stations and base station controllers), or may be a base station access system of a 3G network (i.e. the RAN comprises base stations and RNCs), or may be a base station access system of a 4G network (i.e. the RAN comprises enbs and RNCs), or may be a base station access system of a 5G network. The CN may be an MME and/or S-GW of a 4G network, or may be an SGSN or GGSN of a 3G network, or may be a next generation Core network (NG-Core) of a 5G network.

The gNB generally includes the functionality of at least one protocol layer: a Radio Resource Control (RRC) Layer, a Packet Data Convergence Protocol (PDCP) Layer, a Radio Link Control (RLC) Layer, a Media Access Control (MAC) Layer, and a Physical Layer (PHY).

The gNB may adopt a Centralized Unit (CU) architecture and a Distributed Unit (DU) architecture, where the CU and the DU communicate with each other through a wired or wireless interface, the DU communicates with the terminal through an air interface, and the terminal moves in different cells under the same or different DUs.

If the gbb adopts a CU-DU architecture, there are multiple allowable divisions allowed for CU and DU power, and one of the allowable divisions may be: the CU includes an RRC layer and a PDCP layer, and the DU includes an RLC layer, a MAC layer, and a PHY layer.

An example of the architecture of the communication system shown in fig. 2 is that the network device in the radio access network RAN shown in fig. 2 is a base station (e.g., a gNB) of a CU and DU separation architecture. The RAN may be connected to a core network (e.g., LTE core network, 5G core network, etc.). CU and DU can be understood as the division of the base stations from a logical functional point of view. CUs and DUs may be physically separate or may be deployed together. The functions of the RAN terminate on the CUs. A plurality of DUs may share one. A DU may also connect multiple CUs (not shown). The CU and DU may be connected via an interface, such as an F1 interface. CUs and DUs may be partitioned according to the protocol layers of the wireless network. For example, the CU includes functions of an RRC layer and a PDCP layer, and the DU includes functions of an RLC layer, a MAC layer, and a PHY layer. It is understood that the division of the CU and DU processing functions by such protocol layers is merely an example, and may be divided in other ways. For example, a CU or DU may be partitioned to have more protocol layer functionality. For example, a CU or DU may also be divided into partial processing functions with protocol layers. In one design, some of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. In another design, the functions of a CU or DU may also be divided according to traffic type or other system requirements. For example, dividing by time delay, setting the function that processing time needs to meet the time delay requirement in DU, and setting the function that does not need to meet the time delay requirement in CU. The network architecture shown in fig. 2 may be applied to a 5G communication system, which may also share one or more components or resources with an LTE system. In another design, a CU may also have one or more functions of the core network. One or more CUs may be centrally located or separately located. For example, the CUs may be located on the network side to facilitate centralized management. The DU may have multiple rf functions, or may have a remote rf function.

As shown in fig. 3, an example of an application scenario provided in the embodiment of the present application is shown. As shown in fig. 3, network device 310 is used to access terminal 320 to a wireless network. The terminal 310 may be the network device 20 in fig. 1 or the network device in fig. 2, and the terminal 320 may be the terminal 10 in fig. 1.

Under the SUL configuration, a cell has a downlink carrier and two uplink carriers, the two uplink carriers have different frequency bands, that is, different coverage ranges, the coverage range of the uplink carrier with a higher frequency band is smaller than the coverage range of the uplink carrier with a lower frequency band, the uplink carrier with the higher frequency band is called a first uplink carrier or a PUL carrier or a non-PUL carrier, the uplink carrier with the lower frequency band is called a second uplink carrier or an auxiliary uplink carrier or a SUL carrier, when the terminal 320 resides in the coverage range of the first uplink carrier (that is, near the central region of the network device 310), the terminal 320 may allow to select the first uplink carrier or the second uplink carrier to access the network device 310, and when the terminal 320 resides in the region between the boundary of the first uplink carrier (for example, the PUL boundary) and the boundary of the second uplink carrier (for example, the SUL boundary) (that is, far from the network device) in the region between the boundary of the first uplink carrier (for example, the SUL boundary) and the terminal 320 resides in the region between the second uplink carrier (for example, the SUL boundary) Edge area of device 310), the terminal 320 accesses the network device 310 through a second uplink carrier.

Fig. 4 is a schematic flowchart of a communication method according to an embodiment of the present application.

And a component 401, configured to select a first uplink carrier or a second uplink carrier as an uplink access carrier based on a measurement of a downlink reference signal and a measurement threshold, where the first uplink carrier and the second uplink carrier correspond to respective access control parameters respectively.

In an implementation manner, when a terminal enters or dwells in a cell, the terminal receives, through a broadcast channel or a dedicated channel, carrier configuration information sent by a network device of the cell, for example, the configuration information includes the first uplink carrier and the second uplink carrier, and includes an access parameter and an access control parameter corresponding to the first uplink carrier, and includes an access parameter and an access control parameter corresponding to the second uplink carrier, the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, and the access control parameter of the first uplink carrier and the access control parameter of the second uplink carrier may be the same or different from each other. In another embodiment of the present application, the carrier configuration information further includes downlink carrier information.

The measurement threshold is a threshold that allows selecting a specific uplink carrier to access a network, for example, the measurement threshold is a threshold that allows selecting the first uplink carrier or the second uplink carrier as the uplink access carrier, for example, the measurement threshold is a threshold that allows selecting the first uplink carrier to access the network, for example, the measurement threshold is one or more reference values (e.g., a, or b or other values) that determine a boundary of a coverage area of the first uplink carrier, or may be a value range (e.g., [ a, b ]), and in another design of the present application, the measurement threshold may be one or more reference values (e.g., a, or b or other values) that determine a position within the boundary of the coverage area of the first uplink carrier, or may be a value range (e.g., [ a, b ]). The size of the measurement threshold is specifically configured to the terminal by the network device or preset at the terminal, which is not limited in this embodiment. In one design, the terminal may obtain the measurement threshold from a network device via a broadcast channel or a dedicated channel. In another design, the terminal pre-configures the measurement threshold.

In an implementation manner of the present application, the first uplink carrier and the second uplink carrier belong to the same cell.

In one design, the first uplink carrier may be referred to as a PUL carrier, and the second uplink carrier may be referred to as a secondary uplink carrier, a SUL carrier, an enhanced uplink carrier, or the like, which is not limited by the name of this application. The first uplink carrier and the second uplink carrier may have different frequency bands, or may have the same or similar frequency bands. When the frequency band of the first uplink carrier is different from the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are partially overlapped, for example, the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, the coverage range of the first uplink carrier is smaller than the coverage range of the second uplink carrier, the coverage range of the first uplink carrier is located in the coverage range of the second uplink carrier, and in the overlapping area, the terminal can select the first uplink carrier to initiate network access or the second uplink carrier to initiate network access. And when the frequency band of the first uplink carrier is the same as or similar to the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are the same or basically the same.

The terminal compares the measurement result of the downlink reference signal with a measurement threshold, and selects the first uplink carrier or the second uplink carrier as an uplink access carrier according to the comparison result, for example, if the measurement result of the downlink reference signal satisfies the measurement threshold, for example, is greater than, equal to, or less than the measurement threshold, or satisfies a measurement threshold interval, the first uplink carrier is selected as the uplink access carrier. Optionally, if the measurement result of the downlink reference signal does not satisfy the measurement threshold, for example, is less than the measurement threshold, is equal to the measurement threshold, or is greater than the measurement threshold, or does not satisfy the measurement threshold interval, the second uplink carrier is selected as the uplink access carrier.

And a part 402, determining whether to allow the network access through the uplink access carrier according to the access control parameter corresponding to the uplink access carrier.

The first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, for example, the access control parameters corresponding to the first uplink carrier and the access control parameters corresponding to the second uplink carrier may be different from each other, for example, values of the access control parameters corresponding to the first uplink carrier and the second uplink carrier respectively are different from each other, and the access control parameters are used to control whether the terminal is allowed to initiate network access in the corresponding uplink carriers.

If the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines to allow the network to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, the terminal initiates network access through the access parameter corresponding to the first uplink carrier and accesses the network; and if the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, the terminal does not initiate network access in the first uplink carrier.

And if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines to allow the second uplink carrier to access the network according to the access control parameter corresponding to the second uplink carrier, the terminal initiates network access through the access parameter corresponding to the second uplink carrier and accesses the network. And if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier, the terminal does not initiate network access in the second uplink carrier.

Optionally, the terminal further receives an uplink carrier change indication whether to allow the uplink access carrier to be changed after access barring from the network device, for example, the terminal receives the uplink carrier change indication whether to allow the uplink access carrier to be changed after access barring from the network device through a broadcast channel or a dedicated channel, if the uplink carrier change indication indicates that the terminal is allowed to change the uplink access carrier after access barring, for example, the uplink carrier change indication is 1, the terminal determines whether network access can be initiated on another uplink carrier after one uplink carrier is barred from being accessed, if the uplink carrier change indication indicates that the terminal is not allowed to change the uplink access carrier after access barring, for example, the uplink carrier change indication is 0, after one uplink carrier is barred from being accessed by the terminal, the process of determining whether network access can be initiated for another uplink carrier is not performed, for example, as described in detail below.

And if the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, the terminal determines whether the network is allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier. The process of determining, by the terminal, whether to allow the second uplink carrier to access the network according to the access control parameter corresponding to the second uplink carrier is substantially the same as the process of determining, by the terminal, whether to allow the first uplink carrier to access the network according to the access control parameter corresponding to the first uplink carrier, and details are not repeated here. If the terminal determines to allow the network to be accessed through the second uplink carrier, the terminal initiates network access through the access parameter corresponding to the second uplink carrier; if the terminal determines that the network access is not allowed through the second uplink carrier, the terminal does not initiate network access. In still another implementation manner, the terminal may further

re-perform steps

401 and 402, that is, re-select the uplink access carrier and determine whether to allow access.

If the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines that the network access by the second uplink carrier is not allowed according to the access control parameter corresponding to the second uplink carrier, the terminal determines whether the network access by the first uplink carrier is allowed according to the access control parameter corresponding to the first uplink carrier, wherein the process that the terminal determines whether the network access by the second uplink carrier is allowed according to the access control parameter corresponding to the second uplink carrier is basically the same as the process that the terminal determines whether the network access by the first uplink carrier is allowed according to the access control parameter corresponding to the first uplink carrier, and the description is omitted here. If the terminal determines to allow the network to be accessed through the first uplink carrier, the terminal initiates network access through the access parameter corresponding to the first uplink carrier; if the terminal determines that the network is not allowed to be accessed through the first uplink carrier, the terminal does not initiate network access, and in a further implementation manner, the terminal may further re-perform step 401 and step 402, that is, re-select the uplink access carrier and determine whether to allow access.

Therefore, when the terminal needs network access in the coverage areas of the two uplink carriers, if the terminal cannot initiate network access in one of the uplink carriers, whether network access can be initiated through the other uplink carrier can be determined again, so that the congestion problem of the same uplink carrier can be solved, and the terminal can be accessed to the network as much as possible.

Optionally, before the terminal selects the first uplink carrier or the second uplink carrier according to the downlink reference signal measurement and the measurement threshold, the terminal further determines whether its own capability supports dual uplink carriers, that is, whether the terminal has a capability of supporting SUL, if the terminal has the capability of supporting SUL, the terminal selects the first uplink carrier or the second uplink carrier according to the measurement threshold, and if the terminal does not have the capability of supporting SUL, the terminal selects a single uplink carrier configured by the terminal to determine whether to initiate network access.

In one implementation manner, if the terminal has the capability of supporting the SUL, the terminal acquires, from the network device, whether the uplink carrier and/or the downlink carrier of the current cell include the SUL frequency band combination supported by the terminal. If the uplink carrier and/or the downlink carrier of the current cell received by the terminal from the network equipment comprises the SUL frequency band combination supported by the terminal, the terminal selects the first uplink carrier or the second uplink carrier according to the measurement threshold; and if the uplink carrier and/or the downlink carrier of the current cell received by the terminal from the network equipment does not comprise the SUL frequency band combination supported by the terminal. Optionally, if the terminal directly selects the first uplink carrier or the second uplink carrier according to the downlink reference signal measurement result. For example, the SUL BAND combination supported by the terminal is downlink BAND1+ uplink BAND2+ uplink SUL BAND3, but the uplink and downlink configuration of the current cell is as follows: and if the downlink BAND1+ the uplink BAND4+ the uplink SUL BAND3, the terminal judges that the SUL operation is not supported in the cell.

According to the communication method described above, since the network device configures two uplink carriers for the current cell of the terminal, and the two uplink carriers respectively correspond to different access parameters and different access control parameters, different terminals can select different uplink carriers to determine whether the terminal can access the network, so that network congestion can be avoided as much as possible, and more terminals in the current cell can access the network.

Fig. 5 is a flowchart illustrating a communication method according to another embodiment of the present application.

And a part 501, in which a terminal receives a first uplink carrier and a second uplink carrier sent by a network device and corresponding access parameters and access control parameters.

When a terminal enters or resides in a cell, the terminal receives, through a broadcast channel or a dedicated channel, carrier configuration information sent by a network device of the cell, for example, the configuration information includes the first uplink carrier and the second uplink carrier, and includes an access parameter and an access control parameter corresponding to the first uplink carrier, and includes an access parameter and an access control parameter corresponding to the second uplink carrier, the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, and the access control parameters of the first uplink carrier and the access control parameters of the second uplink carrier may be the same or different from each other. In another embodiment of the present application, the carrier configuration information further includes downlink carrier information.

The first uplink carrier and the second uplink carrier may belong to the same cell.

The measurement threshold is a threshold that allows a specific uplink carrier to be selected to access a network, for example, the measurement threshold is a threshold that allows the first uplink carrier or the second uplink carrier to be selected as the uplink access carrier, for example, the measurement threshold is a threshold that allows the first uplink carrier to be selected to access the network, for example, the measurement threshold is one or more reference values or a value interval that determines a boundary of a coverage area of the first uplink carrier. In one design, the terminal may obtain the measurement threshold from a network device via a broadcast channel or a dedicated channel; or, the terminal pre-configures the measurement threshold. With regard to the measurement threshold, reference may also be made to the description relating to the above embodiments.

The first uplink carrier may be referred to as a PUL carrier, the second uplink carrier may be referred to as an auxiliary uplink carrier or an SUL carrier, and the first uplink carrier and the second uplink carrier may have different frequency bands or the same or similar frequency bands. When the frequency band of the first uplink carrier is different from the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are partially overlapped, for example, the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, the coverage range of the first uplink carrier is smaller than the coverage range of the second uplink carrier, and the coverage range of the first uplink carrier is located in the coverage range of the second uplink carrier. And when the frequency band of the first uplink carrier is the same as or similar to the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are the same or basically the same.

The access parameter may include Random Access Channel (RACH) resources and check-in code resources, and the access control parameter may include an access barring factor (ac-BarringFactor) and/or an access barring time (ac-BarringTime), and in another embodiment of the present application, the access control parameter may further include an access class.

Optionally, the terminal may receive the measurement threshold and the uplink carrier change indication sent by the network device through a broadcast channel or a dedicated channel.

The uplink carrier change indication is used to indicate whether to allow the uplink access carrier to be changed after access barring, for example, the uplink carrier change indication is 1, which indicates that the uplink access carrier is allowed to be changed after access barring, and the uplink carrier change indication is 0, which indicates that the uplink access carrier is not allowed to be changed after access barring, or vice versa. Or, if the network device sends the uplink carrier replacement indication to indicate that the uplink access carrier is allowed to be replaced after the access prohibition, if the network device does not send the indication to indicate that the uplink access carrier is not allowed to be replaced after the access prohibition, or vice versa.

And a step 502 of measuring the downlink reference signal and selecting an uplink carrier according to the measurement result and a measurement threshold.

The terminal measures the downlink reference signal, compares the measurement result of the downlink reference signal with a measurement threshold, and selects the first uplink carrier or the second uplink carrier as the uplink access carrier according to the comparison result. For example, if the measurement result of the downlink reference signal satisfies the measurement threshold, for example, is greater than or equal to the measurement threshold, or is less than the measurement threshold, or belongs to a measurement threshold interval, the first uplink carrier is selected as the uplink access carrier. Optionally, if the measurement result of the downlink reference signal does not satisfy the measurement threshold, for example, is less than the measurement threshold, or is greater than the measurement threshold, or is equal to the measurement threshold, or does not belong to the measurement threshold interval, the second uplink carrier is selected as the uplink access carrier.

In another embodiment of the present application, the downlink reference signal may include a synchronization signal and/or a channel state information reference signal (CSI-RS), and the terminal further receives configuration information from the network device, where the configuration information indicates that the terminal measures the synchronization signal and/or the CSI-RS, and the terminal measures a signal indicated by the configuration information according to the configuration information.

In another embodiment of the present application, the configuration information further indicates a measurement object for measuring the synchronization signal and/or the CSI-RS, for example, the measurement object includes Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and/or signal to interference plus noise ratio (SINR), for example, the configuration information indicates that the RSRP or RSRQ of the synchronization signal is measured, and for example, the configuration information indicates that the RSRP or RSRQ of the CSI-RS is measured, and the terminal measures the RSRP or RSRQ of the CSI-RS.

The terminal selects a first uplink carrier or a second uplink carrier as an uplink access carrier according to the comparison result, for example, if the measurement result of the downlink reference signal is greater than or equal to the measurement threshold, the first uplink carrier is selected as the uplink access carrier; and if the measurement result of the downlink reference signal is smaller than the measurement threshold, selecting the second uplink carrier as the uplink access carrier. For example, when the terminal determines that the RSRP or RSRQ of the synchronization signal or CSI-RS is greater than or equal to the corresponding measurement threshold, the terminal selects the first uplink carrier as the uplink access carrier, and when the terminal determines that the RSRP or RSRQ of the synchronization signal is less than the corresponding measurement threshold, the terminal selects the second uplink carrier as the uplink access carrier.

In one design, before the terminal selects the first uplink carrier or the second uplink carrier according to the downlink reference signal measurement and the measurement threshold, the terminal further needs to determine whether its own capability supports dual uplink carriers, that is, whether the terminal has a capability of supporting SUL, if the terminal has the capability of supporting SUL, the terminal selects the first uplink carrier or the second uplink carrier according to the measurement threshold, and if the terminal does not have the capability of supporting SUL, the terminal selects a single uplink carrier configured by the terminal to determine whether to initiate network access.

In one design, if the terminal has a capability of supporting SUL, the terminal further needs to determine whether the uplink carrier and/or the downlink carrier of the current cell received from the network device includes a SUL band combination supported by the terminal, if the uplink carrier and/or the downlink carrier of the current cell received from the network device by the terminal includes the SUL band combination supported by the terminal, the terminal selects the first uplink carrier or the second uplink carrier according to the measurement threshold, and if the uplink carrier and/or the downlink carrier of the current cell received from the network device by the terminal does not include the SUL band combination supported by the terminal, the terminal directly selects the first uplink carrier or the second uplink carrier according to the downlink reference signal measurement result. For example, the SUL BAND combination supported by the terminal is downlink BAND1+ uplink BAND2+ uplink SUL BAND3, but the uplink and downlink configuration of the current cell is as follows: and if the downlink BAND1+ the uplink BAND4+ the uplink SUL BAND3, the terminal judges that the SUL operation is not supported in the cell.

Part 503, determining whether to allow initiating access according to the access control parameter corresponding to the selected uplink carrier.

For example, the terminal determines whether to allow access to the network through the selected uplink carrier according to an access control parameter corresponding to the selected uplink carrier.

For example, the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, and the access control parameters include an access barring factor (ac-BarringFactor), where the access barring factor is used to indicate a threshold value for determining that access is not allowed, for example, the access barring factor indicates a numerical value. Each terminal compares the generated random number 'rand' with the access prohibition factor, and determines whether to allow the network access to be initiated according to the comparison result, for example, the random number is greater than or equal to the access prohibition factor, which indicates that the network access is allowed to be initiated, and the random number is less than the access prohibition factor, which indicates that the network access is not allowed to be initiated, or vice versa.

For example, the network device configures, in a region (for example, a cell in which the terminal resides, or a coverage region of the first uplink carrier, or a preset region, or an overlapping region covered by the first uplink carrier and the second uplink carrier), one same access barring factor or two different access barring factors for the first uplink carrier and the second uplink carrier and sends the access barring factors to all terminals in the region, and each terminal compares an access random number generated by the terminal with an access barring factor corresponding to the selected uplink carrier, and determines whether to allow the selected uplink carrier to initiate network access according to a comparison result.

For example, the network device configures an access barring factor included in the access control parameter corresponding to the first uplink carrier and the second uplink carrier in an area (e.g., a cell in which the terminal resides, or a coverage area of the first uplink carrier, or a preset area, or an overlapping area covered by the first uplink carrier and the second uplink carrier) to be 0.5, and sends the access barring factor to all terminals in the area. If the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result of the step 402 and the access random number generated by the terminal according to a preset rule or algorithm is 0.6, the terminal determines to allow network access to be initiated on the first uplink carrier; and if the access random number generated by the terminal according to a preset rule or algorithm is 0.4, the terminal determines that the network access is not allowed to be initiated on the first uplink carrier, and vice versa. In another embodiment of the present application, if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result in step 402, a method for the terminal to determine whether to allow the second uplink carrier to initiate network access is the same as a method for selecting the first uplink carrier to determine whether to allow the first uplink carrier to initiate network access, which is not described herein again.

In one design, the network device configures an area (e.g., a cell in which the terminal resides, or a coverage area of the first uplink carrier, or a preset area, or an overlapping area covered by the first uplink carrier and the second uplink carrier) in which both access barring factors included in the access control parameters corresponding to the first uplink carrier are 0.5 and both access barring factors included in the access control parameters corresponding to the second uplink carrier are 0.6, and sends the access barring factors to all terminals in the area. If the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result of the step 402 and the access random number generated by the terminal according to the preset rule or algorithm is 0.6, the terminal determines to allow network access to be initiated on the first uplink carrier; and if the access random number generated by the terminal according to a preset rule or algorithm is 0.4, the terminal determines that the network access is not allowed to be initiated on the first uplink carrier, and vice versa. In another embodiment of the present application, if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result in step 402, a method for the terminal to determine whether to allow the second uplink carrier to initiate network access is the same as a method for selecting the first uplink carrier to determine whether to allow the first uplink carrier to initiate network access, which is not described herein again.

In one design, the access barring factor (ac-BarringFactor) may correspond to an access class, where the access class corresponds to a service type of initiating a network access, that is, network access of different service types is initiated for different terminals, and a network device configures different access barring factors. Different service types correspond to different access levels, and the service types are used for indicating services for initiating network access, such as network access of signaling, network access of paged services, network access of video services, network access of voice services, network access of IP services, network access of emergency services, and the like. In another embodiment of the present application, when the terminal needs to initiate network access for a specific service, an access barring factor corresponding to a service type of initiating network access is determined, and then whether access is allowed is determined according to the access barring factor.

In one design, the access control parameters may include an access barring factor and an access barring time (ac-BarringTime-r13), where the access barring time may be used to indicate a time to bar access to a network, e.g., the access barring time may be a timer that runs for a time to bar initiation of network access. The terminal judges whether the current time of the terminal is within the access prohibition time or not on the basis of judging whether the network access is allowed to be initiated according to the access prohibition factor and then according to the access prohibition time, if the current time of the terminal is within the access prohibition time, the network access is not allowed to be initiated, and if the current time of the terminal is not within the access prohibition time, the network access is allowed to be initiated. In another embodiment of the present application, the terminal may also determine whether the current time of the terminal is within the access barring time, and if the current time of the terminal is not within the access barring time, the terminal determines whether to allow access according to the access barring factor.

Part 504, if network access can be initiated, a random access procedure is initiated.

According to the process of determining whether to allow initiation of network access according to the access control parameters described in the section 503 above, if the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines to allow access to the network through the first uplink carrier according to the access control parameters corresponding to the first uplink carrier, the terminal initiates network access through the access parameters corresponding to the first uplink carrier and accesses to the network; and if the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, the terminal does not initiate network access on the first uplink carrier.

According to the process of determining whether to allow initiation of network access according to the access control parameters described in the above section 503, if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines to allow access to the network through the second uplink carrier according to the access control parameters corresponding to the second uplink carrier, the terminal initiates random access through the access parameters corresponding to the second uplink carrier and accesses to the network. And if the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier, the terminal does not initiate network access in the second uplink carrier.

505, if it can not initiate network access, according to another up carrier wave relative access control parameter to determine whether to allow initiating network access

505 is optional, for example, the terminal further receives an uplink carrier change indication from the network device whether to allow the uplink access carrier to be changed after access barring, for example, the terminal receives the uplink carrier change indication from the network device through a broadcast channel or a dedicated channel whether to allow the uplink access carrier to be changed after access barring, if the uplink carrier change indication indicates that the terminal is allowed to change the uplink access carrier after access barring, for example, the uplink carrier change indication is 1, the terminal determines whether network access can be initiated on another uplink carrier after one uplink carrier is barred from access, if the uplink carrier change indication indicates that the terminal is not allowed to change the uplink access carrier after access barring, for example, the uplink carrier change indication is 0, after one uplink carrier is barred from access, the process of determining whether network access can be initiated for another uplink carrier is not performed, for example, as described in detail below.

And if the terminal selects the first uplink carrier as the uplink access carrier according to the comparison result and determines that the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, the terminal determines whether the network is allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier. The process of determining, by the terminal, whether to allow the second uplink carrier to access the network according to the access control parameter corresponding to the second uplink carrier is substantially the same as the process of determining, by the terminal, whether to allow the first uplink carrier to access the network according to the access control parameter corresponding to the first uplink carrier, and details are not repeated here. If the terminal determines to allow the network to be accessed through the second uplink carrier, the terminal initiates network access through the access parameter corresponding to the second uplink carrier; if the terminal determines that the network is not allowed to be accessed via the second uplink carrier and the terminal does not initiate network access, in one design, the terminal may further perform step 502 again and 504, i.e., perform uplink access carrier selection again and determine whether to allow access.

If the terminal selects the second uplink carrier as the uplink access carrier according to the comparison result and determines that the network access by the second uplink carrier is not allowed according to the access control parameter corresponding to the second uplink carrier, the terminal determines whether the network access by the first uplink carrier is allowed according to the access control parameter corresponding to the first uplink carrier, wherein the process that the terminal determines whether the network access by the second uplink carrier is allowed according to the access control parameter corresponding to the second uplink carrier is basically the same as the process that the terminal determines whether the network access by the first uplink carrier is allowed according to the access control parameter corresponding to the first uplink carrier, and the description is omitted here. If the terminal determines to allow the network to be accessed through the first uplink carrier, the terminal initiates network access through the access parameter corresponding to the first uplink carrier; if the terminal determines that the network is not allowed to be accessed via the first uplink carrier and the terminal does not initiate network access, in one design, the terminal may further perform step 502 again and 504, i.e., perform uplink access carrier selection again and determine whether to allow access.

Therefore, according to the communication method described above, since the network device configures two uplink carriers for the current cell of the terminal, and the two uplink carriers respectively correspond to different access parameters and different access control parameters, different terminals can select different uplink carriers to determine whether the terminal can access the network, so that network congestion can be avoided as much as possible, and more terminals in the current cell can access the network.

Fig. 6 is a schematic flowchart of a communication method according to another embodiment of the present application.

In 601, the measurement result of the downlink reference signal is compared with a carrier factor selection threshold.

When a terminal enters or resides in a cell, the terminal receives, through a broadcast channel or a dedicated channel, carrier configuration information sent by a network device of the cell, for example, the configuration information includes the first uplink carrier and the second uplink carrier, and includes an access parameter and an access control parameter corresponding to the first uplink carrier, and includes an access parameter and an access control parameter corresponding to the second uplink carrier, the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, and the access control parameters of the first uplink carrier and the access control parameters of the second uplink carrier may be the same or different from each other. In one design, the carrier configuration information further includes downlink carrier information.

In one design, the first uplink carrier may be referred to as a PUL carrier, the second uplink carrier may be referred to as an auxiliary uplink carrier or a SUL carrier, and the first uplink carrier and the second uplink carrier may have different frequency bands or the same or similar frequency bands. When the frequency band of the first uplink carrier is different from the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are partially overlapped, for example, the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, the coverage range of the first uplink carrier is smaller than the coverage range of the second uplink carrier, and the coverage range of the first uplink carrier is located in the coverage range of the second uplink carrier. And when the frequency band of the first uplink carrier is the same as or similar to the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are the same or basically the same.

In one design, the first uplink carrier and the second uplink carrier belong to the same cell.

In one design, the terminal may receive the carrier factor selection threshold and the carrier factor selection factor sent by the network device of the cell via a broadcast channel or a dedicated channel. In another embodiment of the present application, the carrier factor selection threshold and/or the carrier factor selection may be configured at the terminal.

The carrier factor selection threshold is a threshold allowing the use of a carrier factor, and the carrier factor selection threshold is used for indicating a threshold value for selecting the first uplink carrier or the second uplink carrier. For example, when the measurement result is greater than or equal to the carrier factor selection threshold, the terminal determines to select the first uplink carrier or the second uplink carrier using a carrier selection factor; when the measurement result is smaller than the carrier factor selection threshold, the terminal determines not to use a carrier selection factor to select the first uplink carrier or the second uplink carrier, and the terminal may directly select the first uplink carrier or the second uplink carrier according to the measurement result of the downlink reference signal, for example, select an uplink carrier with a higher frequency band in an overlapping area of the first uplink carrier and the second uplink carrier, and select an uplink carrier with a lower frequency band in a non-overlapping area.

In one design, the downlink reference signal may include a synchronization signal and/or a channel state information reference signal (CSI-RS), and the terminal further receives configuration information from the network device, where the configuration information indicates that the terminal measures the synchronization signal and/or the CSI-RS, and measures a signal indicated by the configuration information according to the configuration information and uses a measurement result as a measurement result of the downlink reference signal.

In one design, the configuration information may also indicate a measurement object for measuring the synchronization signal and/or the CSI-RS, e.g., the measurement object may include a Reference Signal Receiving Power (RSRP), a Reference Signal Receiving Quality (RSRQ), and/or a signal to interference plus noise ratio (SINR), e.g., the configuration information may indicate that the RSRP or RSRQ of the synchronization signal is measured, e.g., the terminal may measure the RSRP or RSRQ of the synchronization signal, and the configuration information may indicate that the RSRP or RSRQ of the CSI-RS is measured, e.g., the terminal may measure the RSRP or RSRQ of the CSI-RS.

For example, when the terminal determines that the RSRP or RSRQ of the synchronization signal or CSI-RS is greater than or equal to the corresponding carrier factor selection threshold, the terminal determines to select the first uplink carrier or the second uplink carrier using a carrier selection factor, and when the terminal determines that the RSRP or RSRQ of the synchronization signal is less than the corresponding carrier factor selection threshold, the terminal determines not to select the first uplink carrier or the second uplink carrier using the carrier selection factor.

And a component 802, if the measurement result meets a carrier factor selection threshold (for example, greater than or equal to the carrier factor selection threshold), selecting a first uplink carrier or a second uplink carrier according to the carrier factor to initiate network access.

The carrier selection factor is used for indicating a threshold value for selecting the first uplink carrier or the second uplink carrier, and the carrier selection factor indicates a numerical value. For example, the carrier selection factor is used to indicate a threshold value for selecting the first uplink carrier, each terminal compares an access random number (random number 'random') generated by the terminal with the carrier selection factor, and determines whether to initiate network access on the first uplink carrier according to a comparison result, for example, an access random number greater than or equal to the carrier selection factor indicates that network access is allowed to be initiated on the first uplink carrier, and an access random number smaller than the carrier selection factor indicates that network access is not allowed to be initiated on the first uplink carrier, or vice versa.

In an implementation manner, the carrier selection factor is used to indicate a threshold value for selecting the second uplink carrier, each terminal compares a generated access random number (random number 'random') with the carrier selection factor, and determines whether to initiate network access on the second uplink carrier according to a comparison result, for example, an access random number greater than or equal to the carrier selection factor indicates that network access is allowed to be initiated on the second uplink carrier, and an access random number smaller than the carrier selection factor indicates that network access is not allowed to be initiated on the second uplink carrier, or vice versa.

For example, the network device configures a carrier selection factor for the first uplink carrier or the second uplink carrier in a region (e.g., a cell in which the terminal resides, or a coverage region of the first uplink carrier, or a preset region, or an overlapping region covered by the first uplink carrier and the second uplink carrier) and sends the carrier selection factor to all terminals in the region, where each terminal compares the access random number generated by the terminal with the carrier selection factor, and determines whether to allow the uplink carrier corresponding to the carrier selection factor to initiate network access according to a comparison result.

In one implementation, if the terminal determines that the network access cannot be initiated according to the carrier selection factor of one of the first uplink carrier and the second uplink carrier, the terminal may further select another uplink carrier to initiate the network access if the other uplink carrier is not configured with the carrier selection factor. And the terminal determines that the network access cannot be initiated according to the carrier selection factor of one uplink carrier of the first uplink carrier and the second uplink carrier, and the other uplink carrier is configured with the carrier selection factor, and the terminal determines whether the network access is initiated according to the carrier selection factor of the other uplink carrier.

For example, the network device configures a carrier selection factor of the first uplink carrier in an area (for example, a cell in which the terminal resides, or a coverage area of the first uplink carrier, or a preset area, or an overlapping area covered by the first uplink carrier and the second uplink carrier) to be 0.5, and sends the carrier selection factor to all terminals in the area. If the access random number generated by the terminal according to a preset rule or algorithm is 0.6, the terminal determines that network access is allowed to be initiated on the first uplink carrier; and if the access random number generated by the terminal according to a preset rule or algorithm is 0.4, the terminal determines that the network access is not allowed to be initiated on the first uplink carrier, and vice versa. In another embodiment of the present application, if the network device configures a carrier selection factor for the second uplink carrier, a method for the terminal to determine whether to allow the network access to be initiated on the second uplink carrier is the same as a method for selecting the first uplink carrier to determine whether to allow the network access to be initiated, and details thereof are not repeated here.

In another implementation manner, before the terminal compares the measurement result of the downlink reference signal with the carrier factor selection threshold, the terminal further needs to determine whether its own capability supports dual uplink carriers, that is, whether the terminal has the capability of supporting the SUL, if the terminal has the capability of supporting the SUL, the terminal compares the measurement result of the downlink reference signal with the carrier factor selection threshold and selects the first uplink carrier or the second uplink carrier according to the carrier factor, and if the terminal does not have the capability of supporting the SUL, the terminal selects a single uplink carrier configured by the terminal to determine whether to initiate network access.

In one implementation, if the terminal has the capability of supporting SUL, the terminal further needs to determine whether the uplink carrier and/or the downlink carrier of the current cell received from the network device include the SUL band combination supported by the terminal. And if the uplink carrier and/or the downlink carrier of the current cell received by the terminal from the network equipment comprises the SUL frequency band combination supported by the terminal, the terminal selects the first uplink carrier or the second uplink carrier according to the carrier selection factor. Optionally, if the uplink carrier and/or the downlink carrier of the current cell received by the terminal from the network device does not include the SUL band combination supported by the terminal, the terminal directly selects the first uplink carrier or the second uplink carrier according to the measurement result of the downlink reference signal. For example, the SUL BAND combination supported by the terminal is downlink BAND1+ uplink BAND2+ uplink SUL BAND3, but the uplink and downlink configuration of the current cell is as follows: and if the downlink BAND1+ the uplink BAND4+ the uplink SUL BAND3, the terminal judges that the SUL operation is not supported in the cell.

The process of determining whether to allow initiation of access according to the access control parameter corresponding to the first uplink carrier or the access control parameter corresponding to the second uplink carrier is substantially the same as the process in the embodiment of fig. 4 or fig. 5, and is not described herein again.

Therefore, in the communication method described above, the network device configures two uplink carriers for the current cell of the terminal, and different terminals select different uplink carriers according to the carrier selection factor to initiate network access, so that it is avoided that all terminals initiate network access through the same uplink carrier, thereby avoiding network congestion as much as possible, and enabling more terminals in the current cell to access the network.

A part 701 receives Physical Uplink Control Channel (PUCCH) resource allocation information of a first uplink carrier or a second uplink carrier.

For example, the terminal receives configuration information of a first uplink carrier and a second uplink carrier from a network device, where the first uplink carrier and the second uplink carrier belong to the same cell, for example, the terminal receives carrier configuration information sent by the network device of the cell through a broadcast channel or a dedicated channel, and for example, the configuration information includes the first uplink carrier and the second uplink carrier, and includes an access parameter corresponding to the first uplink carrier, and includes an access parameter corresponding to the second uplink carrier. In one design, the carrier configuration information further includes downlink carrier information.

In an implementation manner, the first uplink carrier may be referred to as a PUL carrier, the second uplink carrier may be referred to as an auxiliary uplink carrier or a SUL carrier, and the first uplink carrier and the second uplink carrier may have different frequency bands or the same or similar frequency bands. When the frequency band of the first uplink carrier is different from the frequency band of the second uplink carrier, the coverage ranges of the first uplink carrier and the second uplink carrier are partially overlapped, for example, the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, the coverage range of the first uplink carrier is smaller than the coverage range of the second uplink carrier, and the coverage range of the first uplink carrier is located in the coverage range of the second uplink carrier.

In one implementation, the terminal may measure a downlink reference signal, and send a measurement result to the network device, and the network device determines to send PUCCH resource configuration information of the first uplink carrier or the second uplink carrier to the terminal according to the measurement result.

The downlink reference signal may include a synchronization signal and/or a channel state information reference signal (CSI-RS), the terminal further receives configuration information from the network device, where the configuration information indicates the terminal to measure the synchronization signal and/or the CSI-RS, and the terminal measures a signal indicated by the configuration information according to the configuration information.

Optionally, the configuration information further indicates a measurement object for measuring the synchronization signal and/or the CSI-RS, for example, the measurement object includes Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and/or signal to interference plus noise ratio (SINR), for example, the configuration information indicates that the RSRP or the RSRQ of the synchronization signal is measured, and for example, the configuration information indicates that the RSRP or the RSRQ of the CSI-RS is measured, and the terminal measures the RSRP or the RSRQ of the CSI-RS.

And the network equipment determines whether the measurement result is greater than or equal to a first threshold or not and sends the PUCCH resource of the first uplink carrier or the second uplink carrier to the terminal. For example, the network device determines that the measurement result is greater than or equal to a first threshold, the network device configures and sends the PUCCH resource of the first uplink carrier to the terminal, the network device determines that the measurement result is less than the first threshold, and the network device configures and sends the PUCCH resource of the second uplink carrier to the terminal. In another embodiment of the present application, the network device determines that the measurement result is greater than or equal to a first threshold, the network device configures and sends the PUCCH resource of the second uplink carrier to the terminal, the network device determines that the measurement result is smaller than the first threshold, and the network device configures and sends the PUCCH resource of the first uplink carrier to the terminal.

In an implementation manner, the network device determines to send the PUCCH resource of the first uplink carrier or the second uplink carrier to the terminal according to the load of the first uplink carrier and/or the second uplink carrier and a load threshold. For example, the terminal compares the load of the first uplink carrier with the load of the second uplink carrier, configures PUCCH resources for the uplink carrier with a smaller load, and sends the PUCCH resources to the terminal. In one implementation manner, if the load of the first uplink carrier is less than the corresponding load threshold and the load of the second uplink carrier is greater than or equal to the corresponding load threshold, the network device configures and sends the PUCCH resource of the first uplink carrier to the terminal, and when the load of the first uplink carrier is greater than or equal to the corresponding load threshold and the load of the second uplink carrier is less than the corresponding load threshold, the network device configures and sends the PUCCH resource of the second uplink carrier to the terminal.

In one implementation, for example, the network device determines whether the measurement result is greater than or equal to a first threshold and further determines to send the PUCCH resource of the first uplink carrier or the second uplink carrier to the terminal according to the load of the first uplink carrier or the second uplink carrier. For example, according to the above description, when the network device selects one of the first uplink carrier and the second uplink carrier according to the measurement result, it is determined whether to send the PUCCH resource of the selected uplink carrier according to the load of the selected uplink carrier and the load threshold corresponding to the selected uplink carrier, for example, when the load of the selected uplink carrier is greater than or equal to the load threshold corresponding to the selected uplink carrier, the PUCCH resource of the selected uplink carrier is not sent to the terminal, and when the load of the selected uplink carrier is less than the load threshold corresponding to the selected uplink carrier, the PUCCH resource of the selected uplink carrier is sent to the terminal.

And 702, initiating access on an uplink carrier corresponding to the PUCCH resource according to the access parameter configuration information corresponding to the uplink carrier.

For example, if the terminal receives PUCCH resource configuration information corresponding to the first uplink carrier, the terminal performs access according to an access parameter corresponding to the first carrier; and if the terminal receives the PUCCH resource corresponding to the second uplink carrier, the terminal accesses according to the access parameter corresponding to the second uplink carrier.

Fig. 8 provides a schematic structural diagram of a terminal. The terminal (e.g., UE) may be applied to the systems shown in fig. 1 to 3, and implement the corresponding functions of the terminal in the above embodiments. Reference may be made specifically to the description of the above embodiments.

For convenience of explanation, fig. 8 shows only main components of the terminal. As shown in fig. 8, the terminal 10 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the whole terminal, executing software programs and processing data of the software programs. For example, the processor may implement the corresponding functions of the terminal in fig. 1-7. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. For example, the processor may control and implement the transceiving functions associated with the terminal of fig. 1 to 7 through the rf circuit and the antenna. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to user equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 8 shows only one memory and processor for the sake of illustration. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole user equipment, execute a software program, and process data of the software program. The processor in fig. 8 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the user equipment may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capability, and various components of the user equipment may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the embodiment of the present invention, the antenna and the control circuit having the transceiving function may be regarded as the transceiving unit 11 of the terminal 10, and the processor having the processing function may be regarded as the processing unit 12 of the terminal 10. As shown in fig. 8, the UE10 includes a transceiving unit 11 and a processing unit 12. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 11 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit 11 may be regarded as a sending unit, that is, the transceiver unit 11 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, a transceiver, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

Please refer to fig. 9, which is a schematic structural diagram of another communication apparatus provided in the present application, the communication apparatus is used for implementing the operation of the terminal in the above embodiments. As shown in fig. 9, the communication apparatus includes: antenna 910, rf device 920, and baseband device 930. The antenna 910 is connected to the rf device 920. In the downlink direction, the radio frequency apparatus 920 receives information transmitted by a network device (e.g., a base station) through the antenna 910, and transmits the information transmitted by the network device to the baseband apparatus 930 for processing. In the uplink direction, the baseband device 930 processes the information of the terminal and sends the information to the radio frequency device 920, and the radio frequency device 920 processes the information of the terminal and sends the information to the network device through the antenna 910.

The baseband device 930 may include a modem subsystem for implementing processing of various communication protocol layers of data. And the system also comprises a central processing subsystem which is used for realizing the processing of the terminal operating system and the application layer. In addition, other subsystems, such as a multimedia subsystem for implementing control of a terminal camera, a screen display, etc., peripheral subsystems for implementing connection with other devices, and the like may be included. The modem subsystem may be a separately provided chip, and optionally, the communication device may be implemented on the modem subsystem.

In one implementation, each unit shown in fig. 9 is implemented in the form of a processing element scheduler, for example, a subsystem of the baseband device 930, for example, a modem subsystem, which includes a processing element 931 and a storage element 932, and the processing element 931 calls a program stored in the storage element 932 to execute the method executed by the terminal in the above method embodiment. In addition, the baseband device 930 may further include an interface 933 for exchanging information with the rf device 920.

In another implementation, the units shown in fig. 9 may be one or more processing elements configured to implement the method performed by the above terminal, and the processing elements are disposed on a subsystem of the baseband apparatus 930, such as a modem subsystem, where the processing elements may be integrated circuits, such as: one or more ASICs, or one or more DSPs, or one or more FPGAs, etc. These integrated circuits may be integrated together to form a chip.

For example, the units shown in fig. 7 may be integrated together and implemented in the form of a system-on-a-chip (SOC), for example, the baseband device 930 includes an SOC chip for implementing the above method. The processing element 931 and the storage element 932 may be integrated within the chip, and the method executed by the terminal may be implemented in the form of the stored program called by the processing element 931 to the storage element 932; or, at least one integrated circuit may be integrated in the chip for implementing the method executed by the above terminal; or, the above implementation manners may be combined, the functions of the partial units are implemented in the form of a processing element calling program, and the functions of the partial units are implemented in the form of an integrated circuit.

In summary, the above communication device for a terminal comprises at least one processing element and a memory element, wherein the at least one processing element is configured to execute the method performed by the terminal provided by the above method embodiments. The processing element may: that is, the program stored in the storage element is executed to perform part or all of the steps performed by the terminal in the above method embodiment; it is also possible to: that is, some or all of the steps performed by the terminal in the above method embodiments are performed by integrated logic circuits of hardware in the processor element in combination with instructions; of course, some or all of the steps performed by the terminal in the above method embodiments may also be performed in combination with the first manner and the second manner.

The Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU), or one or more integrated circuits configured to implement the above methods, as described above, for example: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others.

The storage element may be a memory or a combination of a plurality of storage elements.

The baseband device 930 may perform the related processes of fig. 4 to 7. The functions of the processing unit 12 in fig. 8 may be implemented by the baseband device 930, and perform the related functions of the processing unit 12. The radio frequency device 920 may perform the relevant transceiving processes of fig. 4 to fig. 7, or in fig. 8, the transceiving unit 11 may be implemented by the radio frequency device 920 to perform the relevant functions of the transceiving unit 11.

The embodiment of the present application further provides a communication device, which is configured to perform the method according to any of the above embodiments. The communication device comprises means (means) necessary for performing the above-described method embodiments. The means may be implemented by software and/or hardware. The communication device may be a network device or a terminal in fig. 1 and 2.

Fig. 10 shows a schematic structural diagram of a communication apparatus. The communication device 20 may be the network device 20 of fig. 1 and 2. The network device 20 may be configured to implement the method described in the above method embodiment, and refer to the description in the above method embodiment specifically.

The communication device 20 comprises one or more processors 21, and the processor 21 may be a general-purpose processor, a special-purpose processor, or the like. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a baseband chip, a DU, or a CU, etc.), execute a software program, and process data of the software program.

In an alternative design, the processor 21 may also include instructions 23, which may be executed on the processor, so that the communication device 20 performs the functions of the network device (e.g., the base station) in the above method embodiment. Such as configuring the various thresholds described above (e.g., measurement thresholds) and configuration messages (e.g., access control parameters) for the terminal.

In yet another possible design, communication device 20 may include circuitry that may implement the functionality of transmitting or receiving in the foregoing method embodiments.

Optionally, the communication device 20 may include one or more memories 22 having instructions 24 stored thereon, which are executable on the processor to cause the communication device 20 to perform the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. The processor and the memory may be provided separately or may be integrated together.

Optionally, the communication device 20 may further comprise a transceiver 25 and/or an antenna 26. The processor 21 may be referred to as a processing unit and controls a communication device (terminal or base station). The transceiver 25 may be referred to as a transceiver unit, a transceiver, a transceiving circuit, a transceiver, or the like, and is used for implementing transceiving function of the communication device through the antenna 26.

The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various 1C process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), Bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

The communication apparatus described in the present application may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) a stand-alone integrated circuit, IC, or chip;

(2) a set of one or more ICs, which optionally may also include storage components for storing data and/or instructions;

(3) an ASIC, such as a modem (MSM);

(4) a module that may be embedded within other devices;

(5) receivers, cellular telephones, wireless devices, handsets, mobile units, network devices, and the like;

(6) others, etc.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here. Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such work is allowed to be performed in hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It should be understood that, in the embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its allowed work and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein are capable of being implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such work is allowed to be performed in hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only allowed for one logical function, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each function allowing unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (which may sometimes be referred to as a computer program). When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In this application, reference to a "threshold" may refer to a threshold value (boundary value), or a threshold interval (or threshold range). The comparison related to the threshold referred to in this application may be to determine whether the threshold is satisfied, and may be, for example, greater than a boundary value, less than a boundary value, equal to a boundary value, greater than or equal to a boundary value, less than or equal to a boundary value, or within a threshold interval.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

selecting a first uplink carrier or a second uplink carrier as an uplink access carrier based on measurement of a downlink reference signal and a measurement threshold, wherein the first uplink carrier and the second uplink carrier respectively correspond to respective access control parameters, the access control parameters include an access prohibition factor and/or an access prohibition time, the access prohibition factor is used for indicating a threshold value which does not allow access to a network, and the access prohibition time is used for indicating a time for prohibiting access to the network; the access prohibition factor corresponds to an access grade, the access grade corresponds to a service type for initiating network access, different service types correspond to different access prohibition factors, and the service type represents a service for initiating network access;

and determining whether to allow the network to be accessed through the uplink access carrier according to the access control parameter corresponding to the uplink access carrier.

2. The method of claim 1, wherein the method further comprises:

if the first uplink carrier is selected as the uplink access carrier and the network is not allowed to be accessed through the first uplink carrier according to the access control parameter corresponding to the first uplink carrier, determining whether the network is allowed to be accessed through the second uplink carrier according to the access control parameter corresponding to the second uplink carrier; alternatively, the first and second electrodes may be,

3. The method of claim 1, wherein the method further comprises:

acquiring the measurement threshold from the network equipment through a broadcast channel or a dedicated channel; or, pre-configuring the measurement threshold.

4. The method according to any of claims 1-3, wherein the measurement threshold is a threshold allowing selection of the first uplink carrier or the second uplink carrier as the uplink access carrier.

5. The method according to any of claims 1-3, wherein the downlink reference signal comprises a synchronization signal and/or a channel state information reference signal, CSI-RS, the method further comprising:

receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or CSI-RS are measured;

and measuring the signals indicated by the configuration information according to the configuration information.

6. The method of claim 1, wherein prior to the selecting the first uplink carrier or the second uplink carrier as the uplink access carrier based on the measurement of the downlink reference signal and the measurement threshold, the method further comprises:

comparing the measurement result of the downlink reference signal with a carrier factor selection threshold, wherein the carrier factor selection threshold is a threshold allowing the carrier factor to be used;

and when the measurement result is greater than or equal to the carrier factor selection threshold, selecting a first uplink carrier or a second uplink carrier according to the carrier factor selection threshold to initiate network access, wherein the carrier factor selection threshold is used for indicating the threshold for selecting the first uplink carrier or the second uplink carrier.

7. The method of claim 6, wherein the method further comprises:

receiving a system broadcast message or a dedicated message from the network, the system broadcast message or dedicated message including the carrier selection factor.

8. The method of claim 6, wherein the method further comprises: acquiring the carrier factor selection threshold from network equipment through a broadcast channel or a dedicated channel; or, pre-configuring the carrier factor selection threshold.

9. A communications apparatus, comprising: at least one processor and at least one memory for storing one or more computer instructions or code which, when executed by the at least one processor, is configured to perform:

and determining whether to allow the uplink access carrier to access the network according to the access control parameters corresponding to the uplink access carrier.

10. The communications apparatus of claim 9, wherein the at least one processor is further configured to:

11. The communication apparatus of claim 10, wherein the communication apparatus further comprises a transceiver for obtaining the measurement threshold from a network device over a broadcast channel or a dedicated channel; or the like, or a combination thereof,

the at least one processor is further configured to pre-configure the measurement threshold.

12. The communication apparatus according to any of claims 9-11, wherein the measurement threshold is a threshold allowing selection of the first uplink carrier or the second uplink carrier as the uplink access carrier.

13. The communication apparatus according to any of claims 9-11, wherein the downlink reference signal comprises a synchronization signal and/or a channel state information reference signal, CSI-RS, the communication apparatus further comprising:

a transceiver for receiving configuration information from the network, the configuration information indicating that the synchronization signal and/or CSI-RS are measured;

the at least one processor is further configured to measure a signal indicated by the configuration information according to the configuration information.

14. The communications apparatus of claim 10, the at least one processor further configured to, prior to performing selecting the first uplink carrier or the second uplink carrier as the uplink access carrier based on the measurement of the downlink reference signal and a measurement threshold:

15. The apparatus of claim 14, wherein the apparatus further comprises:

a transceiver for receiving a system broadcast message or a dedicated message from the network, the system broadcast message or dedicated message including the carrier selection factor.

16. The apparatus of claim 14, wherein the apparatus further comprises: a transceiver for acquiring the carrier factor selection threshold from a network device through a broadcast channel or a dedicated channel; or, the processor is further configured to pre-configure the carrier factor selection threshold.