Carrier activation method, reference signal transmission method, apparatus, device, and medium

Abstract

The application discloses a carrier activation method, a reference signal sending method, a device, equipment and a medium, and relates to the field of mobile communication. The method comprises the following steps: a terminal receives a reference signal, the sending power of the reference signal is determined by the signal sending power on a first carrier and a second carrier in a same frequency band, or the sending power of the reference signal is determined by the signal sending power on the second carrier in the same frequency band; and the second carrier is activated based on the reference signal; wherein the first carrier is one or more carriers that have been activated, and the second carrier is one or more carriers that are being activated.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and in particular to a carrier activation method, apparatus, device, and medium. Background Technology

[0002] In carrier aggregation scenarios, the carrier of the primary cell (PCell) / primary-secondary cell (PScell) is called the primary carrier. There is one and only one primary carrier, which provides Radio Resource Control (RRC) signaling connectivity, Non-Access Stratum (NAS) functions, security, etc. The carrier of the secondary cell (Scell) is called the secondary carrier, which only provides additional radio resources. The primary carrier can be simply referred to as PCell / PScell, and the secondary carrier as Scell.

[0003] In the process of achieving fast activation of Scell, the user equipment (UE) needs to set automatic gain control (AGC) based on the received power of the reference signal. How to simplify the process of the UE determining the received power of the reference signal is an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides a carrier activation method, a reference signal transmission method, an apparatus, a device, and a medium, and defines a method for determining the transmission power of the reference signal during the carrier activation process, thereby simplifying the process by which the UE determines the reception power of the reference signal.

[0005] According to one aspect of this application, a carrier activation method is provided, the method comprising:

[0006] A reference signal is received, wherein the transmission power of the reference signal is determined by the transmission power of the signal on the first carrier and the second carrier within the same frequency band, or the transmission power of the reference signal is determined by the transmission power of the signal on the second carrier within the same frequency band.

[0007] The second carrier is activated based on the reference signal;

[0008] Wherein, the first carrier is one or more carriers that have been activated, and the second carrier is one or more carriers that are being activated.

[0009] According to one aspect of this application, a method for transmitting a reference signal is provided, the method comprising:

[0010] The reference signal is transmitted according to a target transmission power, which is determined based on the signal transmission power of the terminal on the first carrier and the second carrier in the same frequency band, or the transmission power of the reference signal is determined by the signal transmission power on the second carrier in the same frequency band.

[0011] Wherein, the first carrier is one or more carriers that have been activated, and the second carrier is one or more carriers that are being activated.

[0012] According to one aspect of this application, a carrier activation apparatus is provided, the apparatus comprising:

[0013] A receiving module is used to receive a reference signal, wherein the transmission power of the reference signal is determined by the transmission power of the signal on the activated first carrier and the activated second carrier within the same frequency band, or the transmission power of the reference signal is determined by the transmission power of the signal on the activated second carrier within the same frequency band.

[0014] A processing module is used to activate the second carrier based on the reference signal.

[0015] According to one aspect of this application, a reference signal transmitting apparatus is provided, the apparatus comprising:

[0016] The transmitting module is configured to transmit the reference signal according to a target transmitting power, wherein the target transmitting power is determined based on the signal transmitting power of the terminal on the already activated first carrier and the currently activated second carrier in the same frequency band; or, based on the signal transmitting power of the terminal on the currently activated second carrier in the same frequency band.

[0017] According to one aspect of this application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the carrier activation method as described above.

[0018] According to one aspect of this application, a network device is provided, the network device comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the reference signal transmission method as described above.

[0019] According to one aspect of this application, a computer-readable storage medium is provided that stores executable instructions, which are loaded and executed by a processor to implement the carrier activation method or the reference signal transmission method as described above.

[0020] According to one aspect of this application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium, a processor of a computer device reading the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions, causing the computer device to perform the carrier activation method or reference signal transmission method described in the above aspect.

[0021] According to one aspect of this application, a chip is provided, the chip including programmable logic circuitry or a program, the chip being used to implement the carrier activation method or the reference signal transmission method as described above.

[0022] The technical solutions provided in this application have at least the following beneficial effects:

[0023] Since the transmission power of the reference signal is determined by the transmission power of the signals on the first and second carriers within the same frequency band, the terminal only needs to complete the appropriate AGC settings based on the received power of the single reference signal, thereby completing the activation process of the second carrier based on the single reference signal.

[0024] Since the terminal only needs to complete the appropriate AGC settings based on the received power of the reference signal, the reference signal can be transmitted only on the second carrier and does not need to be transmitted on the first carrier, thereby reducing the occupation of transmission resources and reducing interference to other terminals. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a timing diagram of the activation process of the second carrier provided in an exemplary embodiment of this application;

[0027] Figure 2 This is a time-frequency schematic diagram of the activation process of the second carrier provided in an exemplary embodiment of this application;

[0028] Figure 3 This is a time-frequency schematic diagram of the activation process of the second carrier provided in an exemplary embodiment of this application;

[0029] Figure 4 This is a block diagram of a mobile communication system provided in an exemplary embodiment of this application;

[0030] Figure 5 This is a flowchart of a carrier activation method provided in an exemplary embodiment of this application;

[0031] Figure 6 This is a time-frequency schematic diagram of the activation process of the second carrier provided in an exemplary embodiment of this application;

[0032] Figure 7 This is a flowchart of a method for transmitting a reference signal provided in an exemplary embodiment of this application;

[0033] Figure 8 This is a block diagram illustrating a carrier activation apparatus according to an exemplary embodiment of this application;

[0034] Figure 9 This is a block diagram illustrating a reference signal transmitting apparatus according to an exemplary embodiment of this application;

[0035] Figure 10 This is a block diagram illustrating a communication device in an exemplary embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0037] Before providing a detailed description of the methods provided in the embodiments of this application, a brief introduction to the relevant terms and implementation environment involved in the embodiments of this application will be given.

[0038] Carrier aggregation (CA)

[0039] To meet the demand for high speeds, 5G also supports carrier aggregation technology.

[0040] Carrier aggregation enables New Radio (NR) systems to support larger frequency bands and achieve higher peak data rates by jointly scheduling and utilizing resources on multiple component carriers (CCs). Based on the continuity of the aggregated carriers in the spectrum, it can be divided into continuous carrier aggregation and discontinuous carrier aggregation. Based on whether the aggregated carriers are in the same frequency band, it can be divided into intra-band carrier aggregation and inter-band carrier aggregation.

[0041] Scell ​​activation

[0042] In one implementation, the secondary carrier configuration is sent from the primary cell's base station to the user equipment (UE) via dedicated RRC signaling. Initially, the secondary carrier is deactivated. Data transmission and reception can only proceed after the base station activates the Scell ​​via a Medium Access Control (MAC) control element (MAC CE). In another implementation, the secondary carrier configuration is sent from the primary cell's base station to the UE via dedicated RRC signaling, and it is activated by default after configuration.

[0043] Taking the activation of the main cell's base station using MAC CE signaling as an example, combined with reference... Figure 1 Scell ​​activation includes the following steps:

[0044] 1. At time t1, the base station of the primary cell sends a MAC CE to the UE, which carries a secondary carrier activation indication. The UE receives the MAC CE.

[0045] 2. At time t2, the UE sends a Hybrid Automatic Repeat request Acknowledge (HARQ ACK) to the base station of the primary cell.

[0046] 3. From time t2 to time t3, the UE internally decodes and processes the MAC CE, for example, the MAC CE.

[0047] 4. After time t3, the UE configures AGC, performs time-frequency domain synchronization with the secondary cell, and then waits to receive the first synchronization signal block (SSB) from the secondary cell. The waiting time for the first SSB can be considered as TFirstSSB.

[0048] 5. At time t4, the UE detects the first SSB of the secondary cell and learns about the channel state information reference signal (CSI-RS) transmission configuration of the secondary cell.

[0049] 6. At time t5, the UE generates a channel state feedback report based on the monitored CSI-RS;

[0050] 7. At time t6, the UE reports a channel state feedback report to the base station of the secondary cell. The time when the UE generates and reports the channel state feedback report can be regarded as TCSI_Reporting. After the base station learns of the UE's channel state feedback, it schedules the UE to perform data transmission.

[0051] In the above process, due to the long period of the secondary cell's SSB, the Scell ​​activation process has a large delay (that is, the delay caused by the TFirstSSB is long). Therefore, in the relevant technology, it was decided to introduce a tracking reference signal (TRS) to assist the UE in quickly activating the Scell.

[0052] AGC

[0053] Automatic gain control (AGC) circuits are special circuits that stabilize the output signal amplitude or limit its variation to a very small range when the input signal amplitude varies significantly. AGC circuits are crucial in radio receiving equipment, ensuring stable received amplitude. They are widely used in various receivers, recorders, and signal acquisition systems, as well as in fiber optic, microwave, and satellite communication systems, and in radar and broadcast television systems.

[0054] In CA scenarios, the UE needs to reset AGC for each carrier activation or deactivation. Traditionally, AGC is set based on the received power of the SSB signal. However, to reduce Scell ​​activation latency, related technologies use TRS instead of SSB for Scell ​​activation. Accordingly, AGC must also be set based on the received power of the TRS. Currently, the transmit power information of the TRS can be configured through higher-layer signaling, for example, powerControlOffsetSS{db-3,db0,db3,db6}, which represents the power density difference relative to the secondary synchronization channel: -3db, 0db, 3db, 6db.

[0055] In CA scenarios, in order to reduce costs and terminal complexity, the LNP (Low Noise Amplifier) ​​is shared by multiple carriers in a frequency band. Therefore, when setting up AGC, the power information of the signals on the already activated or currently activated carriers is required to ensure that the output of AGC does not exceed a certain threshold and avoids exceeding the effective working range during subsequent processing.

[0056] In such Figure 2In the CA scenario shown, at time t1, the UE receives a secondary carrier activation indication. At time t2, the first SSB is transmitted on the already active first carrier, and the second SSB is transmitted on the second carrier that is about to be activated. The first and second SSBs need to be transmitted in the same time slot. The UE sets the AGC based on the sum of the received power of the first and second SSBs to ensure that the AGC setting is reasonable and that the AGC output does not exceed a certain threshold value.

[0057] Similarly, in scenarios where TRS is used instead of SSB, such as Figure 3 As shown. At time t1, after the UE receives the secondary carrier activation indication, at time t3, the first TRS is transmitted on the already activated first carrier, and the second TRS is transmitted on the activating second carrier. The first TRS and the second TRS need to be transmitted in the same time slot. The UE sets the AGC based on the sum of the received power of the first TRS and the second TRS to ensure that the AGC setting is reasonable and that the AGC output does not exceed a certain threshold value.

[0058] However, since TRS is an additional signal for Pcell / PScell / Scell, it will affect terminals that are already transmitting on these cells or carriers, reducing transmission resources or even causing interference.

[0059] Figure 4 A schematic diagram of a system architecture provided in one embodiment of this application is shown. This system architecture may include: a terminal 10 and a network device 20.

[0060] The number of terminals 10 is typically multiple, and one or more terminals 10 can be distributed within the cell managed by each network device 20. Terminals 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of UEs, mobile stations (MS), etc. For ease of description, in this embodiment, the devices mentioned above are collectively referred to as terminals.

[0061] Network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal 10. Network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of a device with network device functionality may differ; for example, in a 5G NR system, it may be called a gNodeB, gNB, or access network device. As communication technologies evolve, the name "network device" may change. For ease of description, in this embodiment, the aforementioned device providing wireless communication functionality to terminal 10 is collectively referred to as a network device.

[0062] The "5G NR system" in this disclosure can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this disclosure are applicable to 5G NR systems and also to subsequent evolution systems of 5G NR systems.

[0063] In the exemplary CA scenario, the primary cell / primary-secondary cell corresponds to a single network device 20, and the secondary cell corresponds to another single network device 20. The two network devices 20 can communicate with each other via optical fiber.

[0064] Figure 5 A flowchart of a carrier activation method provided in an exemplary embodiment of this application is shown. This embodiment illustrates the method by describing its application in a terminal. The method includes:

[0065] Step 502: Receive a reference signal. The transmission power of the reference signal is determined by the transmission power of the signal on the first carrier and the second carrier within the same frequency band, or the transmission power of the reference signal is determined by the transmission power of the signal on the second carrier within the same frequency band.

[0066] The terminal is a terminal that uses intra-band carrier aggregation or inter-band carrier aggregation.

[0067] For example, the reference signal is a reference signal used to assist the terminal in performing second carrier activation. The reference signal includes at least one of the following signals: TRS, CSI-RS, Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS). In this embodiment, TRS is used as an example of the reference signal.

[0068] Examples such as Figure 6 As shown, the reference signal is transmitted only on the active second carrier and does not need to be transmitted on the already active first carrier. The terminal receives the reference signal on the active second carrier, but does not need to receive the reference signal on the already active first carrier. In other words, the reference signal is not transmitted on the already active first carrier.

[0069] In this embodiment, the transmission power of the reference signal is determined based on the signal transmission power of all carriers used by the terminal in the same frequency band x. Frequency band x is the frequency band where the currently active second frequency band is located. The carriers used by the second terminal in frequency band x include: the already activated first carrier and the currently active second carrier, or only the currently active second carrier.

[0070] The first carrier is one or more carriers that have been activated, and the second carrier is one or more carriers that are being activated (or about to be activated). Figure 6 The example below illustrates this by having both the first and second carriers be a single carrier.

[0071] In a frequency band carrier aggregation scenario, the terminal can use a single frequency band, within which both a first carrier and a second carrier exist simultaneously. The transmission power of the reference signal is determined by the transmission power of the signals on the first and second carriers within that frequency band. Alternatively, the transmission power of the reference signal is determined by the transmission power of the signals on all first carriers and all second carriers within that frequency band. Or, the transmission power of the reference signal is determined by the transmission power of the first signal on the first carrier and the second signal on the second carrier. Here, the first and second signals are the reference signals. For example, the first signal is the first SSB signal, and the second signal is the second SSB signal.

[0072] In inter-band carrier aggregation scenarios, the terminal can use at least two frequency bands. Assume the second active carrier is on frequency band x.

[0073] From the perspective of the terminal:

[0074] If an activated first carrier still exists in frequency band x, the transmission power of the reference signal is determined by the transmission power of the signals on the first and second carriers in frequency band x. Alternatively, the transmission power of the reference signal is determined by the transmission power of the signals on all first carriers and all second carriers in frequency band x. Or, the transmission power of the reference signal is determined by the transmission power of the first signal on the first carrier and the second signal on the second carrier in frequency band x. Here, the first and second signals are reference signals. For example, the first signal is the first SSB signal, and the second signal is the second SSB signal.

[0075] If there is no activated first carrier on frequency band x, meaning the activated first carrier is on another frequency band y, then the transmission power of the reference signal is determined by the transmission power of the signal on the second carrier in frequency band x. Alternatively, the transmission power of the reference signal is determined by the transmission power of the signal on all second carriers in frequency band x. Or, the transmission power of the reference signal is determined by the transmission power of the second signal on the second carrier in frequency band x. Here, the second signal is the reference signal. For example, the second signal is the second SSB signal.

[0076] Step 504: Activate the second carrier based on the reference signal;

[0077] The terminal sets the AGC based on the received power of the reference signal; it then activates the second carrier according to the set AGC. That is, after receiving the reference signal, the terminal sets (or adjusts) the AGC based on the received power of that reference signal. After setting the AGC, it completes time-frequency domain synchronization with the secondary cell, CSI measurement, and CSI reporting, thereby activating the second carrier and awaiting network equipment scheduling for data transmission on the second carrier.

[0078] For example, in a CA scenario, the first carrier includes a primary carrier / primary-secondary carrier (PCell / PScell), or the first carrier includes a primary carrier / primary-secondary carrier + secondary carrier (Scell); the second carrier includes a secondary carrier (Scell).

[0079] refer to Figure 6 At time t1, the UE receives an Scell ​​activation indication. At time t4, the UE receives a TRS on the active Scell. The transmission power of this TRS is determined by the transmission power of the SSB on the Pcell and the transmission power of the SSB on the Scell. After receiving the TRS, the UE adjusts its AGC settings accordingly based on the received power of the TRS. After setting the AGC, the UE completes time-frequency domain synchronization with the Scell, CSI measurement, and CSI reporting, thus activating the Scell ​​and awaiting network device scheduling for data transmission on the Scell.

[0080] In summary, in the method provided in this embodiment, since the transmission power of the reference signal is determined by the transmission power of the signals on the first carrier and the second carrier within the same frequency band, the terminal only needs to complete the reasonable setting of AGC based on the reception power of the single reference signal, thereby completing the activation process of the second carrier based on the single reference signal.

[0081] In the method provided in this embodiment, since the terminal only needs to complete the reasonable setting of AGC based on the received power of the reference signal, the reference signal can be transmitted only on the second carrier and does not need to be transmitted on the first carrier, thereby reducing the occupation of transmission resources and reducing interference to other terminals.

[0082] Based on Figure 5 In an alternative embodiment or a separate embodiment, the transmission power of the reference signal is equal to the sum of the transmission powers of the first signal on the first carrier and the second signal on the second carrier.

[0083] The first carrier and the second carrier belong to the same frequency band. The first carrier is one or more carriers that are already activated, and the second carrier is one or more carriers that are currently being activated. For example, the first signal is the first SSB signal on the first carrier, and the second signal is the second SSB signal on the second carrier.

[0084] For example, in an intra-carrier carrier aggregation scenario, the reference signal is a TRS transmitted on the second carrier, which does not need to be transmitted on the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on the received power of the TRS, and then completes the activation of the second carrier.

[0085] Based on Figure 5 In an alternative embodiment or a separate embodiment, the transmission power of the reference signal is equal to the average transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0086] The first carrier and the second carrier belong to the same frequency band. The first carrier is one or more carriers that are already activated, and the second carrier is one or more carriers that are currently being activated. For example, the first signal is the first SSB signal on the first carrier, and the second signal is the second SSB signal on the second carrier.

[0087] For example, in an intra-carrier carrier aggregation scenario, the reference signal is a TRS transmitted on the second carrier, which does not need to be transmitted on the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on n times the received power of the TRS, and then completes the activation of the second carrier. n is the number of the first and second carriers.

[0088] Based on Figure 5 In an alternative embodiment or a separate embodiment, the power density of the reference signal is equal to the sum of the power densities of the first signal on the first carrier and the second signal on the second carrier.

[0089] The first carrier and the second carrier belong to the same frequency band. The first carrier is one or more carriers that are already activated, and the second carrier is one or more carriers that are currently being activated. For example, the first signal is the first SSB signal on the first carrier, and the second signal is the second SSB signal on the second carrier.

[0090] For example, in an intra-carrier carrier aggregation scenario, the reference signal is a TRS transmitted on the second carrier, which does not need to be transmitted on the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on m times the received power density of the TRS, and then completes the activation of the second carrier. m is the number of resource elements (REs) occupied by the reference signal.

[0091] Based on Figure 5In an alternative embodiment or a separate embodiment, the power density of the reference signal is equal to the average power density of the first signal on the first carrier and the second signal on the second carrier.

[0092] The first carrier and the second carrier belong to the same frequency band. The first carrier is one or more carriers that are already activated, and the second carrier is one or more carriers that are currently being activated. For example, the first signal is the first SSB signal on the first carrier, and the second signal is the second SSB signal on the second carrier.

[0093] For example, in an intra-carrier carrier aggregation scenario, the reference signal is a TRS transmitted on the second carrier, which does not need to be transmitted on the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on n*m times the received power density of the TRS, and then completes the activation of the second carrier. Here, n is the number of the first and second carriers, and m is the number of REs occupied by the reference signal.

[0094] Based on Figure 5 In an alternative embodiment or a separate embodiment, only the second carrier is included within the same frequency band, excluding the first carrier. The transmission power of the reference signal is equal to the sum of the transmission powers of the second signals on all the second carriers.

[0095] The second carrier is one or more carriers that are currently active. For example, the second signal is the second SSB signal on the second carrier.

[0096] For example, in an inter-carrier aggregation scenario, the reference signal is a TRS transmitted on a second carrier, and the frequency band x of the second carrier does not include the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC according to the received power of the TRS, and then completes the activation of the second carrier.

[0097] Based on Figure 5 In an alternative embodiment or a separate embodiment, only the second carrier is included within the same frequency band, excluding the first carrier. The transmission power of the reference signal is equal to the average transmission power of all second signals.

[0098] The second carrier is one or more carriers that are currently active. For example, the second signal is the second SSB signal on the second carrier.

[0099] For example, in an inter-carrier aggregation scenario, the reference signal is a TRS transmitted on the second carrier, and the frequency band x of the second carrier does not include the first carrier. After receiving the second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on n times the received power of the TRS, and then completes the activation of the second carrier. n is the number of the first and second carriers.

[0100] Based on Figure 5 In an alternative embodiment or a separate embodiment, only the second carrier is included within the same frequency band, excluding the first carrier. The power density of the reference signal is equal to the sum of the power densities of the second signals on all the second carriers.

[0101] The second carrier is one or more carriers that are currently active. For example, the second signal is the second SSB signal on the second carrier.

[0102] For example, in an inter-carrier aggregation scenario, the reference signal is a TRS transmitted on a second carrier, and the frequency band x of the second carrier does not include the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on m times the received power density of the TRS, and then completes the activation of the second carrier. m is the number of resource elements (REs) occupied by the reference signal.

[0103] Based on Figure 5 In an alternative embodiment or a separate embodiment, only the second carrier is included within the same frequency band, excluding the first carrier. The power density of the reference signal is equal to the average power density of the second signal on all second carriers.

[0104] The second carrier is one or more carriers that are currently active. For example, the second signal is the second SSB signal on the second carrier.

[0105] For example, in an inter-carrier aggregation scenario, the reference signal is a TRS transmitted on a second carrier, and the frequency band x of the second carrier does not include the first carrier. After receiving a second carrier activation indication, the UE receives the TRS on the second carrier. The UE sets or adjusts the AGC based on n*m times the received power density of the TRS, and then completes the activation of the second carrier. Here, n is the number of the first and second carriers, and m is the number of REs occupied by the reference signal.

[0106] Figure 7 A flowchart illustrating a method for transmitting a reference signal according to an exemplary embodiment of this application is shown. This method can be performed by a network device (or access network device) corresponding to a second carrier. The method includes:

[0107] Step 702: Transmit a reference signal according to the target transmission power, which is determined based on the signal transmission power of the terminal on the first and second carriers in the same frequency band, or the transmission power of the reference signal is determined by the signal transmission power on the second carrier in the same frequency band;

[0108] The first carrier is one or more carriers that have been activated, and the second carrier is one or more carriers that are being activated.

[0109] For example, the network device transmits a reference signal on the active second carrier at the target transmission power. The network device does not transmit a reference signal on the already active first carrier.

[0110] For example, the reference signal includes at least one of the following signals: TRS, CSI-RS, PSS, SSS.

[0111] For example, the first signal is the first SSB signal, and the second signal is the second SSB signal.

[0112] In summary, in the method provided in this embodiment, since the transmission power of the reference signal is determined by the transmission power of the signals on the first carrier and the second carrier within the same frequency band, the terminal only needs to complete the reasonable setting of AGC based on the reception power of the reference signal, thereby completing the subsequent activation process of the second carrier based on the reference signal.

[0113] In the method provided in this embodiment, since the terminal only needs to complete the reasonable setting of AGC based on the received power of the reference signal, the reference signal can be transmitted only on the second carrier and does not need to be transmitted on the first carrier, thereby reducing the occupation of transmission resources and reducing interference to other terminals.

[0114] Based on Figure 7 In an alternative embodiment or a separate embodiment, the transmission power of the reference signal is equal to:

[0115] The sum of the transmission power of the first signal on the first carrier and the second signal on the second carrier. The first carrier and the second carrier belong to the same frequency band.

[0116] The first carrier is one or more carriers that have already been activated, and the second carrier is one or more carriers that are being activated.

[0117] Alternatively, the transmission power of the reference signal is equal to the average transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0118] Alternatively, the power density of the reference signal is equal to the sum of the power densities of the first signal on the first carrier and the second signal on the second carrier.

[0119] Alternatively, the power density of the reference signal is equal to the average power density of the first signal on the first carrier and the second signal on the second carrier.

[0120] Based on Figure 7 In an alternative embodiment or a separate embodiment, only the second carrier is included within the same frequency band, excluding the first carrier. The transmission power of the reference signal is equal to the sum of the transmission powers of the second signals on all the second carriers. The second carrier is one or more carriers that are currently active. For example, the second signal is a second SSB signal on a second carrier.

[0121] Alternatively, the transmission power of the reference signal is equal to the average transmission power of all the second signals.

[0122] Alternatively, the power density of the reference signal is equal to the sum of the power densities of the second signals on all second carriers.

[0123] Alternatively, the power density of the reference signal is equal to the average power density of the second signal on all second carriers.

[0124] It should be noted that the above embodiments can also be freely combined by those skilled in the art.

[0125] Figure 8 A block diagram of a carrier activation apparatus provided in an exemplary embodiment of this application is shown, the apparatus comprising:

[0126] The receiving module 820 is used to receive a reference signal, wherein the transmission power of the reference signal is determined by the signal transmission power of the activated first carrier and the activated second carrier within the same frequency band, or the transmission power of the reference signal is determined by the signal transmission power of the activated second carrier within the same frequency band.

[0127] Processing module 840 is used to activate the second carrier based on the reference signal.

[0128] In an optional implementation of this embodiment, the transmission power of the reference signal is equal to:

[0129] The sum of the transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0130] In an optional implementation of this embodiment, the transmission power of the reference signal is equal to:

[0131] The average transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0132] In an optional implementation of this embodiment, the power density of the reference signal is equal to:

[0133] The sum of the power densities of the first signal on the first carrier and the second signal on the second carrier.

[0134] In an optional implementation of this embodiment, the power density of the reference signal is equal to:

[0135] The average power density of the first signal on the first carrier and the second signal on the second carrier.

[0136] In an optional implementation of this embodiment, the receiving module is configured to receive the reference signal on the second carrier that is currently active.

[0137] In an optional implementation of this embodiment, the reference signal is not transmitted on the already activated first carrier.

[0138] In an optional implementation of this embodiment, the reference signal includes at least one of the following signals:

[0139] Phase Reference Signal (TRS), Channel State Information Reference Signal (CSI-RS), Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS).

[0140] In an optional implementation of this embodiment, the processing module 840 is configured to set AGC based on the received power of the reference signal; and activate the second carrier according to the set AGC.

[0141] In an optional implementation of this embodiment, the first signal is a first synchronization signal block (SSB) signal, and the second signal is a second SSB signal.

[0142] Figure 9 A block diagram of a reference signal transmitting apparatus provided in an exemplary embodiment of this application is shown, the apparatus comprising:

[0143] Processing module 920 is used to determine a target transmission power, which is determined based on the signal transmission power of the terminal on the already activated first carrier and the currently activated second carrier in the same frequency band; or, transmission module 940, which is determined based on the signal transmission power of the terminal on the currently activated second carrier in the same frequency band, is used to transmit the reference signal according to the target transmission power.

[0144] In an optional implementation of this embodiment, the transmission power of the reference signal is equal to:

[0145] The sum of the transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0146] In an optional implementation of this embodiment, the transmission power of the reference signal is equal to:

[0147] The average transmission power of the first signal on the first carrier and the second signal on the second carrier.

[0148] In an optional implementation of this embodiment, the power density of the reference signal is equal to:

[0149] The sum of the power densities of the first signal on the first carrier and the second signal on the second carrier.

[0150] In an optional implementation of this embodiment, the power density of the reference signal is equal to:

[0151] The average power density of the first signal on the first carrier and the second signal on the second carrier.

[0152] In an optional implementation of this embodiment, the transmitting module 940 is configured to transmit the reference signal on the active second carrier at the target transmitting power.

[0153] In an optional implementation of this embodiment, the transmitting module 940 is configured not to transmit the reference signal on the already activated first carrier.

[0154] In an optional implementation of this embodiment, the reference signal includes at least one of the following signals:

[0155] Phase Reference Signal (TRS), Channel State Information Reference Signal (CSI-RS), Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS).

[0156] In an optional implementation of this embodiment, the first signal is a first synchronization signal block (SSB) signal, and the second signal is a second SSB signal.

[0157] The sub-nodes mentioned in the above embodiments may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities, as well as various forms of user equipment, mobile stations (MS), terminals, etc. For ease of description, the devices mentioned above are collectively referred to as terminals.

[0158] The sub-nodes mentioned in the above embodiments can also be base stations, which are devices deployed in an access network to provide wireless communication functions for terminals. Base stations can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the names of devices with base station functions may differ; for example, in LTE systems, they are called eNodeB or eNB; in NR systems, they are called gNodeB or gNB. As communication technologies evolve, the description of "base station" may change. For convenience in the embodiments of this application, the devices that provide wireless communication functions for terminals are collectively referred to as network devices.

[0159] Figure 10 The diagram shows a schematic representation of a communication device (terminal or network device) provided in an exemplary embodiment of this application. The communication device includes a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

[0160] The processor 101 includes one or more processing cores. The processor 101 executes various functional applications and information processing by running software programs and modules.

[0161] The receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.

[0162] The memory 104 is connected to the processor 101 via the bus 105.

[0163] The memory 104 can be used to store at least one instruction, and the processor 101 is used to execute the at least one instruction to implement the various steps of the carrier activation method or the reference signal transmission method mentioned in the above method embodiments.

[0164] exist Figure 8 or Figure 9 The operations performed by the sending module can be performed by the transmitter 103 in this embodiment; Figure 8 or Figure 9 The operations performed by the receiving module can be performed by the receiver 102 in this embodiment. Figure 8 or Figure 9 All operations performed except for the sending and receiving modules can be executed by the processor 101 in this embodiment.

[0165] Furthermore, the memory 104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0166] In an exemplary embodiment, a computer-readable storage medium is also provided, which stores at least one instruction, at least one program, code set, or instruction set, wherein the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the carrier activation method or the reference signal transmission method executed by the communication device provided in the above-described method embodiments.

[0167] In an exemplary embodiment, a computer program product or computer program is also provided, which includes computer instructions stored in a computer-readable storage medium. A processor of a communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the communication device to perform the carrier activation method or the reference signal transmission method described above.

[0168] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0169] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A carrier activation method, characterized by, The method comprises: receiving a reference signal, a transmission power of the reference signal being determined by a signal transmission power on a first carrier and a second carrier in a same frequency band, or the transmission power of the reference signal being determined by a signal transmission power on the second carrier in the same frequency band, the reference signal comprising a phase reference signal TRS, the reference signal being received on the second carrier being activated, the reference signal not being transmitted on the first carrier being activated, the first carrier comprising a primary carrier or a primary secondary carrier, or the first carrier comprising the primary carrier or the primary secondary carrier, a secondary carrier, and the second carrier comprising the secondary carrier; activating the second carrier based on the reference signal; wherein the first carrier is one or more carriers being activated, and the second carrier is one or more carriers being activated.

2. The method of claim 1, wherein, The transmission power of the reference signal is equal to: a sum of a transmission power of a first signal on the first carrier and a transmission power of a second signal on the second carrier.

3. The method of claim 1, wherein, The transmission power of the reference signal is equal to: an average of a transmission power of a first signal on the first carrier and a transmission power of a second signal on the second carrier.

4. The method of claim 1, wherein, The power density of the reference signal is equal to: a sum of a power density of a first signal on the first carrier and a power density of a second signal on the second carrier.

5. The method of claim 1, wherein, The power density of the reference signal is equal to: an average of a power density of a first signal on the first carrier and a power density of a second signal on the second carrier.

6. The method according to any one of claims 1 to 5, characterized in that, The activating the second carrier based on the reference signal comprises: setting an automatic gain control AGC based on a received power of the reference signal; activating the second carrier according to the set AGC.

7. The method of any one of claims 2 to 5, wherein: the first signal is a first synchronization signal block SSB signal, and the second signal is a second SSB signal.

8. A method of transmitting a reference signal, the method comprising: The method comprises: transmitting the reference signal at a target transmission power, the target transmission power being determined according to a signal transmission power of a terminal on a first carrier and a second carrier in a same frequency band, or the transmission power of the reference signal being determined by a signal transmission power on the second carrier in the same frequency band, the reference signal comprising a phase reference signal TRS, the reference signal being received on the second carrier being activated, the reference signal not being transmitted on the first carrier being activated, the first carrier comprising a primary carrier or a primary secondary carrier, or the first carrier comprising the primary carrier or the primary secondary carrier, a secondary carrier, and the second carrier comprising the secondary carrier; wherein the first carrier is one or more carriers being activated, and the second carrier is one or more carriers being activated.

9. The method of claim 8, wherein, The transmission power of the reference signal is equal to: a sum of a transmission power of a first signal on the first carrier and a transmission power of a second signal on the second carrier.

10. The method of claim 8, wherein, The transmission power of the reference signal is equal to: an average of a transmission power of a first signal on the first carrier and a transmission power of a second signal on the second carrier.

11. The method of claim 8, wherein, The power density of the reference signal is equal to: a sum of a power density of a first signal on the first carrier and a power density of a second signal on the second carrier.

12. The method of claim 8, wherein, A power density of the reference signal is equal to: An average of power densities of a first signal on the first carrier and a second signal on the second carrier.

13. The method according to any one of claims 9 to 12, characterized in that, The first signal is a first synchronization signal block, SSB, signal, and the second signal is a second SSB signal.

14. A carrier activation apparatus, characterized by comprising: The apparatus comprises: A receiving module configured to receive a reference signal, a transmission power of the reference signal being determined according to a signal transmission power on a first carrier and a second carrier in a same frequency band, or the transmission power of the reference signal being determined according to the signal transmission power on the second carrier in the same frequency band, the reference signal comprising a phase reference signal, TRS, the reference signal being received on the second carrier being activated, the reference signal not being transmitted on the first carrier being activated, the first carrier comprising a primary carrier or a primary secondary carrier, or the first carrier comprising the primary carrier or the primary secondary carrier, a secondary carrier, and the second carrier comprising the secondary carrier; A processing module configured to activate the second carrier based on the reference signal.

15. The apparatus of claim 14, wherein, The transmission power of the reference signal is equal to: A sum of transmission powers of a first signal on the first carrier and a second signal on the second carrier.

16. The apparatus of claim 14, wherein, The transmission power of the reference signal is equal to: An average of transmission powers of a first signal on the first carrier and a second signal on the second carrier.

17. The apparatus of claim 14, wherein, A power density of the reference signal is equal to: A sum of power densities of a first signal on the first carrier and a second signal on the second carrier.

18. The apparatus of claim 14, wherein, A power density of the reference signal is equal to: An average of power densities of a first signal on the first carrier and a second signal on the second carrier.

19. The apparatus of any of claims 14 to 18, wherein The processing module is configured to set an automatic gain control, AGC, based on a received power of the reference signal, and to activate the second carrier according to the set AGC.

20. The apparatus of any one of claims 15 to 18, wherein, The first signal is a first synchronization signal block, SSB, signal, and the second signal is a second SSB signal.

21. An apparatus for transmitting a reference signal, the apparatus comprising: The apparatus comprises: A transmitting module configured to transmit the reference signal according to a target transmission power, the target transmission power being determined according to a signal transmission power of a terminal on a first carrier and a second carrier in a same frequency band, or the target transmission power being determined according to the signal transmission power of the terminal on the second carrier in the same frequency band, the reference signal comprising a phase reference signal, TRS, the reference signal being received on the second carrier being activated, the reference signal not being transmitted on the first carrier being activated, the first carrier comprising a primary carrier or a primary secondary carrier, or the first carrier comprising the primary carrier or the primary secondary carrier, a secondary carrier, and the second carrier comprising the secondary carrier.

22. The apparatus of claim 21, wherein, The transmission power of the reference signal is equal to: A sum of transmission powers of a first signal on the first carrier and a second signal on the second carrier.

23. The apparatus of claim 21, wherein, The transmission power of the reference signal is equal to: An average of transmission powers of a first signal on the first carrier and a second signal on the second carrier.

24. The apparatus of claim 21, wherein, The power density of the reference signal is equal to: The sum of the power densities of the first signal on the first carrier and the second signal on the second carrier.

25. The apparatus of claim 21, wherein, The power density of the reference signal is equal to: The average of the power densities of the first signal on the first carrier and the second signal on the second carrier.

26. The apparatus of any one of claims 22 to 25, wherein, The first signal is a first synchronization signal block, SSB, signal, and the second signal is a second SSB signal.

27. A terminal, characterized by The terminal comprises: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the carrier activation method according to any one of claims 1 to 7.

28. A network device, comprising: The network device comprises: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the reference signal transmission method according to any one of claims 8 to 13.

29. A computer-readable storage medium, characterized in that, The computer readable storage medium stores executable instructions, which are loaded and executed by the processor to implement the carrier activation method according to any one of claims 1 to 7, or the reference signal transmission method according to any one of claims 8 to 13.

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