CN114731574A - Narrow band signaling for power saving - Google Patents

Narrow band signaling for power saving Download PDF

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Publication number
CN114731574A
CN114731574A CN201980102383.4A CN201980102383A CN114731574A CN 114731574 A CN114731574 A CN 114731574A CN 201980102383 A CN201980102383 A CN 201980102383A CN 114731574 A CN114731574 A CN 114731574A
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China
Prior art keywords
narrowband signal
narrowband
configuration information
receiving
transmission
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CN201980102383.4A
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Chinese (zh)
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CN114731574B (en
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R·拉塔萨克
M·劳里德森
贺敬
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Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
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Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Embodiments of the present disclosure relate to devices, methods, apparatuses, and computer-readable storage media for power saving using narrowband signals. The method includes receiving, from a second device, first configuration information of a broadband signal transmission between a first device and the second device; receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and transmitting a response message indicating that the first device is capable of receiving the narrowband signal. In the present disclosure, a narrowband signal is introduced for power saving. The network device may inform the terminal device of the narrowband signal and the terminal device may enter a low power narrowband mode to receive the narrowband signal and return to the wideband mode only under certain conditions. In this way, power consumption may be reduced and the system becomes more cost effective.

Description

Narrowband signaling for power conservation
Technical Field
Embodiments of the present disclosure relate generally to the field of telecommunications, and in particular, to an apparatus, method, apparatus, and computer-readable storage medium for power saving using narrowband signals.
Background
The ambitious goal of 5G wireless technology is to support three general services with very heterogeneous requirements: enhanced mobile broadband (eMBB), massive machine type communication (mtc), and ultra-reliable low latency communication (URLLC). The goal of mtc is to achieve cost-effective and robust connections for billions of devices without overloading the network. Key factors for success include cost efficiency, low power consumption, and long-term availability.
It is expected that mtc and New Radios (NR) will be deployed in the same frequency band to support use cases such as industrial internet of things (IoT), smart cities, wearable devices, etc. In a cell supporting mtc, a narrowband enhanced machine type communication (eMTC)/narrowband internet of things (NB-IoT) carrier will be deployed inband to an NR carrier.
Disclosure of Invention
In general, example embodiments of the present disclosure provide a solution for power saving using narrowband signals.
In a first aspect, a first device is provided. The first device comprises at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the first apparatus at least to: receiving, from a second device, first configuration information of a broadband signal transmission between the first device and the second device; receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
In a second aspect, a second apparatus is provided. The second device comprises at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the second apparatus at least to: transmitting, to a first device, first configuration information of a broadband signal transmission between the first device and a second device; generating second configuration information for narrowband signaling from the second device to the first device; transmitting second configuration information to the first device based on the first configuration information; and receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
In a third aspect, a method is provided. The method includes receiving, from a second device, first configuration information of a broadband signal transmission between a first device and the second device. The method also includes receiving, from the second device, second configuration information for a narrowband signal transmission from the second device to the first device based on the first configuration information; and transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
In a fourth aspect, a method is provided. The method includes transmitting, to a first device, first configuration information of a broadband signal transmission between the first device and a second device; generating second configuration information for narrowband signaling from the second device to the first device; transmitting second configuration information to the first device based on the first configuration information; and receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
In a fifth aspect, an apparatus is provided that includes means for receiving, from a second device, first configuration information for a broadband signal transmission between a first device and the second device; means for receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and means for transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
In a sixth aspect, an apparatus is provided that includes means for transmitting, to a first device, first configuration information for broadband signaling between the first device and a second device; means for generating second configuration information for narrowband signaling from the second device to the first device; means for transmitting second configuration information to the first device based on the first configuration information; and means for receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
In a seventh aspect, a computer-readable medium is provided, having stored thereon a computer program which, when executed by at least one processor of an apparatus, causes the apparatus to perform the method according to the third aspect.
In an eighth aspect, a computer-readable medium is provided, having stored thereon a computer program which, when executed by at least one processor of an apparatus, causes the apparatus to perform the method according to the fourth aspect.
Other features and advantages of embodiments of the present disclosure will also become apparent from the following description of the specific embodiments, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the embodiments of the disclosure.
Drawings
Embodiments of the present disclosure are presented by way of example and their advantages are explained in more detail below with reference to the accompanying drawings, in which
FIG. 1 illustrates an example communication network in which example embodiments of the present disclosure may be implemented;
fig. 2 shows a schematic diagram of a process 200 for power saving using narrowband signals according to an example embodiment of the present disclosure;
fig. 3 illustrates a flow diagram of an example method 300 for power saving using narrowband signals, according to some example embodiments of the present disclosure;
fig. 4 illustrates a flow diagram of an example method 400 of power saving using narrowband signals, according to some example embodiments of the present disclosure;
FIG. 5 shows a simplified block diagram of a device suitable for implementing an example embodiment of the present disclosure; and
fig. 6 illustrates a block diagram of an example computer-readable medium, in accordance with some embodiments of the present disclosure.
Throughout the drawings, the same or similar reference numbers refer to the same or similar elements.
Detailed Description
The subject matter described herein will now be discussed with reference to several example embodiments. It should be understood that these examples are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to suggest any limitation as to the scope of the subject matter.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two functions or acts shown in succession may, in fact, be executed substantially concurrently, or the functions/acts may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as Long Term Evolution (LTE), LTE-advanced (LTE-a), Wideband Code Division Multiple Access (WCDMA), High Speed Packet Access (HSPA), and the like. Further, communication between the terminal device and the network device in the communication network may be performed according to any suitable generation of communication protocol, including, but not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, future fifth generation (5G) communication protocols, and/or any other protocol currently known or developed in the future.
Embodiments of the present disclosure may be applied in various communication systems. In view of the rapid development of communications, there will, of course, also be future types of communication techniques and systems that may embody the present disclosure. And should not be taken as limiting the scope of the disclosure to only the above-described systems. For purposes of illustration, embodiments of the present disclosure will be described with reference to a 5G communication system.
The term "network device" as used herein includes, but is not limited to, Base Stations (BSs), gateways, registration management entities, and other suitable devices in a communication system. The term "base station" or "BS" denotes a node B (NodeB or NB), evolved NodeB (eNodeB or eNB), NR NB (also referred to as gNB), Remote Radio Unit (RRU), Radio Header (RH), Remote Radio Head (RRH), relay, low power node (such as femto, pico), etc.
The term "terminal device" as used herein includes, but is not limited to, "User Equipment (UE)", and other suitable terminal devices capable of communicating with a network device. For example, the "terminal device" may refer to a terminal, a Mobile Terminal (MT), a Subscriber Station (SS), a portable subscriber station, a Mobile Station (MS), or an Access Terminal (AT).
The term "circuitry" as used herein may refer to one or more or all of the following:
(a) a purely hardware circuit implementation (such as an implementation using only analog and/or digital circuitry), and
(b) a combination of hardware circuitry and software, such as (as applicable):
(i) hardware circuit(s) for analog and/or digital and
a combination of software/firmware, and
(ii) hardware processor(s) with software (including digital signal processors), software, and any portion of memory(s) that work together to cause a device, such as a mobile phone or server, to perform various functions, and
(c) hardware circuit(s) and/or processor(s), such as microprocessor(s) or a portion of microprocessor(s), that require software (e.g., firmware) for operation, but which may not be present when operation is not required.
The definition of circuitry is suitable for all uses of the term in this application, including in any claims. As another example, as used in this application, the term circuitry also encompasses implementations of only a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware. For example, the term circuitry, if applicable to a particular claim element, also encompasses a baseband integrated circuit or processor integrated circuit for a mobile device, or a similar integrated circuit in a server, a cellular network device, or other computing or network device.
Fig. 1 illustrates an example communication network 100 in which embodiments of the present disclosure may be implemented. Network 100 includes a second device 120 (hereinafter may be referred to as network device 120) and first devices 110-1 and 110-2 (hereinafter collectively referred to as first device 110 or terminal device 110 alone) served by network device 120. The service area of network device 120 is referred to as a cell 102. It should be understood that the number of network devices and terminal devices is for illustrative purposes only and does not represent any limitation. Network 100 may include any suitable number of network devices and terminal devices suitable for implementing embodiments of the present invention. Although not shown, it should be understood that one or more terminal devices may be in cell 102 and served by network device 120.
Depending on the communication technology, network 100 may be a Code Division Multiple Access (CDMA) network, a Time Division Multiple Access (TDMA) network, a Frequency Division Multiple Access (FDMA) network, an Orthogonal Frequency Division Multiple Access (OFDMA) network, a single carrier frequency division multiple access (SC-FDMA) network, or the like. The communications discussed in network 100 may conform to any suitable standard including, but not limited to, new radio access (NR), Long Term Evolution (LTE), LTE-evolved, LTE-advanced (LTE-a), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), CDMA2000, and global system for mobile communications (GSM), among others. Further, the communication may be performed in accordance with any generation of communication protocols now known or later developed. Examples of communication protocols include, but are not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, and fifth generation (5G) communication protocols. The techniques described herein may be used for the wireless networks and radio technologies described above as well as other wireless networks and radio technologies. For clarity, certain aspects of the techniques are described below for LTE, and LTE terminology is used in much of the description below.
The power consumption of the terminal device is proportional to the radio frequency Bandwidth (BW). For example, the NR power model available in TR 38.840 specifies a 100MHz bandwidth and 100% power consumption, while 20MHz BW uses 40% power consumption. For NR, the minimum BW is 5MHz, although a typical deployment in the frequency range FR1 would use 10 or 20MHz bandwidth. Currently, the NR Physical Downlink Control Channel (PDCCH) can span a very wide BW, while the Synchronization Signal Block (SSB) has been limited to 3.6-7.2MHz, e.g., for 15/30kHz subcarrier spacing (SCS). Furthermore, monitoring SSBs for synchronization and time-frequency tracking is power consuming, even if the PDCCH is monitored only infrequently.
Since mtc targets low power consumption, mtc and New Radios (NR) are expected to be deployed in the same frequency band or carrier to support use cases such as industrial internet of things (IoT), smart cities, wearable devices, etc.
In a cell supporting mtc, a narrowband enhanced machine type communication (eMTC)/narrowband IoT (NB-IoT) carrier will be deployed in-band to an NR carrier or within an NR carrier guard band. The minimum bandwidth of eMTC is 1.4MHz, while the NB-IoT bandwidth is 180 kHz.
A narrowband eMTC will have Primary Synchronization Signals (PSS)/Secondary Synchronization Signals (SSS)/cell-specific reference signals (CRS) that must be transmitted for an eMTC terminal device. Similarly, the NB-IoT will have Narrowband Primary Synchronization Signal (NPSS)/Narrowband Secondary Synchronization Signal (NSSS)/Narrowband Reference Signal (NRS) that must be transmitted for the NB-IoT terminal device. For NR terminal devices, using these narrowband eMTC/NB-IoT signals instead of wideband NR signals such as SSB can save significant power. However, currently, NR terminal devices are not aware of eMTC/NB-IoT signals such as PSS/SSS/CRS or NPSS/NSSS/NRs that may be transmitted in a cell.
The present invention therefore proposes a solution for indicating a narrowband signal to an NR terminal device, so that the NR terminal device can use the narrowband signal according to the capabilities and desires of the terminal device. At the same time, power savings can be achieved using narrowband signals.
The principles and implementations of the present disclosure are described in detail below with reference to fig. 2, where fig. 2 shows a schematic diagram of power saving using narrowband signals. For purposes of discussion, the process 200 will be described with reference to fig. 1. Flow 200 may involve network device 120 and terminal device 110 shown in fig. 1.
As described above, since the terminal device 110 cannot know the narrowband signal, the network device 120 may configure necessary parameters for characterizing the narrowband signal, such as the type of the narrowband signal. For example, the narrowband signal may be any of PSS/SSS/CRS or NPSS/NSSS/NRS.
Further, network device 120 may determine necessary parameters for indicating resources for transmission and detection or demodulation of narrowband signals. Such Physical Resource Blocks (PRBs) are allocated for transmission. Further, some parameters associated with the transmission may also be determined by the network device 120, such as an identifier of the cell used to carry the transmission, i.e., the physical cell id (pcid) of the eMTC/NB-IoT, which may indicate a cell that supports transmission of the narrowband signal. Some offset associated with the transmission may also be included in the parameters, such as carrier offset, SCS offset, and PRB offset, etc.
As shown in fig. 2, network device 120 generates 205 configuration information for narrowband signaling based on at least one of the above-described parameters related to the transmission of the narrowband signal, and transmits 210 the configuration information for narrowband signaling to terminal device 110 to indicate the presence of a narrowband.
The transmission of narrowband signals from network device 120 to terminal device 110 may be performed based on configuration information of the broadband signal transmission, which may have been provided from network device 120 to terminal device 120. That is, network device 120 may transmit information associated with the narrowband signal to terminal device 110 using the wideband signal.
Configuration information associated with the narrowband signal may be transmitted via higher layer signaling. As an option, the configuration information may be transmitted in system information broadcast by network device 120, e.g., system information block type 1(SIB1) as a new information element. For example, it can be considered a narrowband reference signal. Accordingly, the configured parameters may be included in a specific field in this new information element. As another option, the configuration information may also be transmitted via signaling designated for terminal device 110, e.g., using device-specific radio resource control messages or signaling.
If terminal device 110 receives configuration information for the narrowband signal transmission from network device 120 and determines 215 that the narrowband signal may be accepted at terminal device 110, terminal device 110 may transmit 220 a response message to network device 120. The response message may indicate that terminal device 110 is capable of receiving the narrowband signal.
The response message may also allow network device 120 to turn on (turn on) a narrowband signal, e.g., NB-IoT Narrowband Reference Signal (NRS), even if there are no NB-IoT terminal devices in the cell.
Network device 12 may also generate 225 a configuration message that may indicate an operation to be performed by terminal device 110 using the narrowband signal, and network device 12 may transmit 230 the configuration message to terminal device 110.
As an option, a configuration message may also be transmitted from network device 120 to terminal device 110 at act 210, i.e. together with the configuration information transmitted with the narrowband signal.
In some example embodiments, when terminal device 110 receives a configuration message indicating an operation to be performed by terminal device 110 using the narrowband signal, terminal device 110 may switch 235 to the narrowband mode to maintain low power consumption.
In some example embodiments, a timer for switching of the band mode may be preconfigured. For example, terminal device 110 may switch 235 to the narrowband mode if terminal device 110 does not monitor a downlink transmission within a predetermined time interval.
As described above, network device 120 may configure terminal device 110 with specific operations to use narrowband signals. For example, the narrowband signals may be used for synchronization, time-frequency tracking, phase tracking, and measurements, such as mobility measurements and cell selection or reselection measurements. Some embodiments will be described in detail with reference to fig. 2 to illustrate the use of narrowband signals for terminal device 110.
In some example embodiments, network device 120 may configure a narrowband control resource set (CORESET) associated with the narrowband signal (e.g., CORESET may be configured in the same portion of Bandwidth (BWP) as the narrowband signal), which may be considered a resource configuration for control information for additional transmission of data from network device 120 to terminal device 110, and may transmit the configured narrowband CORESET to terminal device 110 via a configuration message.
In this case, terminal device 110 may determine that a narrowband signal is to be used to monitor control information on the PDCCH between network device 120 and terminal device 110, and enter a narrowband mode to maintain low power consumption. In this low power narrowband mode, terminal device 110 may be in an RRC connected state, an idle state, or an inactive mode state.
In the low power narrowband mode, terminal device 110 may monitor the PDCCH by detecting a narrowband signal. Network device 120 may transmit 240 the narrowband signal to terminal device 110.
In the case where control information may be transmitted to terminal device 110 by way of a narrowband signal, network device 120 may have to transmit for a longer time to maintain the same performance due to the smaller bandwidth of the narrowband CORESET.
Terminal device 110 may determine whether the control information is included in the narrowband signal based on the received resource configuration (i.e., the configuration of the narrowband CORESET of control information). If terminal device 110 is able to obtain control information from the narrowband signal, terminal device 110 may be aware of subsequent data transmissions in the wideband. Thus, terminal device 110 may switch 245 from narrowband mode to wideband mode.
In some example embodiments, terminal device 110 may determine a bandwidth portion (BWP) of the broadband signal for additional transmission of data based on the control information. Terminal device 110 may switch to a broadband mode for receiving 250 data on the determined BWP.
In some example embodiments, additional delay may be introduced to allow end device 110 sufficient time to switch to broadband BWP. The additional delay may be fixed (e.g., specified in the RAN1 or RAN4 specifications) or given via control information. Furthermore, the additional delay may depend on the readjustment time of the terminal device.
In this case, by using the narrowband signal, the terminal device 110 may also perform time-frequency tracking based on control information acquired from the narrowband signal.
As another option, in some example embodiments, network device 120 may determine a configuration for Radio Resource Measurement (RRM), which may include possible new thresholds for detecting the condition of the radio resources.
Since NB-IoT/eMTC may have a longer range or larger coverage than NR, the measurement event trigger (absolute threshold) used by NR terminal devices on NB-IoT may be lower than the threshold configured for normal NB-IoT terminal devices. Otherwise, there may be a risk that the NR terminal device cannot connect to the full bandwidth NR carrier when needed. As an option, terminal device 110 may perform relaxed RRM measurements on the narrow bandwidth carrier. If this value falls below a certain level, the terminal device has to switch to the normal NR carrier and initiate the normal RRM measurements.
In some example embodiments, the network device 120 may also provide coarse guidance on whether to, for example, handover cells, and additional broadband measurements in order to obtain more accurate results in the configuration of RRM measurements. For example, the configuration of RRM measurements may indicate that a terminal device may switch to wideband RSRP measurements if the measured narrowband RSRP is below a threshold.
Network device 120 may transmit the configuration for RRM to terminal device 110 via a configuration message. The message may be transmitted in higher layer signaling.
In this case, terminal device 110 may determine that a narrowband signal is to be used to perform RRM measurements and enter a narrowband mode to maintain low power consumption. Network device 120 may then transmit 240 the narrowband signal to terminal device 110.
For example, for RRM measurements, terminal device 110 may measure the power level of the narrowband signal in the RRM measurements and compare the measured power level with a threshold power level, which may be obtained from a configuration message or pre-configured configuration information for the RRM measurements.
If terminal device 110 determines that the measured power level is below the predetermined threshold power level, terminal device 110 may generate 255 a measurement report based on the comparison and transmit 260 the measurement report to network device 120. Depending on the configuration of the RRM measurements, the network device 120 may arrange another broadband RRM measurement. Thus, the terminal device 110 may switch 265 to the broadband mode for performing further measurements of radio resources in the broadband mode.
Furthermore, terminal device 110 may also receive further narrowband signals from further network devices different from network device 120 and perform RRM measurements on the further narrowband signals based on the configuration of the RRM measurements. For example, terminal device 110 determines that the measured received power level of the radio resource in the further narrowband signal is above a predetermined threshold power level, terminal device 110 may transmit a measurement report of the comparison to network device 120 and switch to the broadband mode for performing a measurement of the radio resource for the third device in the broadband mode.
In this case, NB-IoT/eMTC signals may also be used for mobility measurements. For example, the serving cell configuration is configured indicating that neighbor cell x is using a narrowband carrier with a PCID, offset, etc. If terminal device 110 then measures that cell x is better, it can move to broadband.
In further cases, network device 120 may determine a configuration for phase tracking and transmit the configuration for phase tracking to terminal device 110 via a configuration message.
In this case, terminal device 110 may determine that a narrowband signal is to be used to perform phase tracking and enter a narrowband mode to maintain low power consumption.
Network device 120 may then transmit 240 the narrowband signal to terminal device 110, and terminal device 110 may determine phase noise associated with the narrowband signal based on the phase tracking configuration and perform 270 phase tracking based on the phase noise.
In the present disclosure, a narrowband signal is introduced for power saving. Network device 120 may inform the terminal device of the narrowband signal and the terminal device may enter a low power narrowband mode to receive the narrowband signal and return to the wideband mode only under certain conditions. In this way, power consumption may be reduced and the system becomes more cost effective.
Fig. 3 shows a flow diagram of an example method 300 for power saving using narrowband signals. According to some example embodiments of the present disclosure. The method 300 may be implemented at the first device 110 as shown in fig. 1. For discussion purposes, the method 300 will be described with reference to fig. 1.
As shown in fig. 3, at 310, the first device 110 receives first configuration information for a broadband signal transmission between the first device and the second device from the second device 120.
At 320, the first device 110 receives, from the second device 120, second configuration information for a narrowband signal transmission from the second device to the first device based on the first configuration information.
In some exemplary embodiments, the second configuration information comprises at least one of: an identifier of a cell used to carry the narrowband signal transmission, an offset of a carrier associated with the narrowband signal transmission, a type of the narrowband signal, a resource block allocated for the narrowband signal transmission, an offset of the resource block, a subcarrier spacing of the narrowband signal transmission, and an offset of a power associated with the narrowband signal transmission.
In some example embodiments, the second configuration information is received via system information broadcast by the second device or signaling specified for the first device.
At 330, the first device 110 transmits a response message indicating that the first device is capable of receiving the narrowband signal.
In some example embodiments, the first device 110 may receive a configuration message indicating an operation to be performed by the first device using the narrowband signal.
In some example embodiments, if the first device 110 receives the configuration message or determines that a pre-configured timer for switching of the band mode expires, switching to the narrowband mode for receiving the narrowband signal based on the second configuration information.
In some example embodiments, the first device 110 may receive a narrowband signal from the second device and determine control information for further transmission of data from the second device to the first device based on the configuration message. The first device 110 may also determine a BWP for the further transmission based on the control information and switch to the broadband mode for receiving data on the BWP in the further transmission.
In some example embodiments, the first device 110 may receive a narrowband signal from the second device. The first device 110 may also determine a measured received power level of the radio resources in the narrowband signal by performing measurements of the radio resources for the narrowband signal based on the configuration message and comparing the measured power level to a predetermined threshold power level. The first device 110 may also transmit a measurement report associated with the comparison to the second device and switch to the broadband mode for performing further measurements of radio resources in the broadband mode if the first device 110 determines that the measured power level is below the predetermined threshold power level.
In some example embodiments, the first device 110 may receive a narrowband signal from the second device. The first device 110 may determine phase noise associated with the narrowband signal based on the configuration message and perform phase tracking based on the phase noise.
In some example embodiments, the first device is a terminal device and the second device is a network device.
Fig. 4 illustrates a flow diagram of an example method 400 of power saving using narrowband signals, according to some example embodiments of the present disclosure. The method 400 may be implemented at the second device 120 as shown in fig. 1. For discussion purposes, the method 400 will be described with reference to fig. 1.
As shown in fig. 4, at 410, the second device 120 transmits first configuration information of broadband signal transmission between the first device 110 and the second device 120 to the first device 110.
At 420, the second device 120 generates second configuration information for the narrowband signal transmission from the second device 120 to the first device 110.
In some example embodiments, the second configuration information comprises at least one of: an identifier of a cell used to carry the narrowband signal transmission, an offset of a carrier associated with the narrowband signal transmission, a type of the narrowband signal, a resource block allocated for the narrowband signal transmission, an offset of the resource block, a subcarrier spacing of the narrowband signal transmission, and an offset of a power associated with the narrowband signal transmission.
At 430, the second device 120 transmits second configuration information to the first device 110 based on the first configuration information.
In some example embodiments, the second configuration information is transmitted via system information broadcast by the second device 120 or signaling designated for the first device 110.
In some example embodiments, the second device 120 may generate a configuration message indicating an operation to be performed by the first device using the narrowband signal. The second device 120 may also transmit a configuration message to the first device 110.
At 440, the second device 120 receives a response message from the first device 110 indicating that the first device 110 is capable of receiving the narrowband signal.
In some example embodiments, the second device 120 may further generate control information for a further broadband transmission of data from the second device to the first device and transmit the control information to the first device via the narrowband signal to cause the first device to switch to the broadband mode for receiving data of the bandwidth part BWP in the further broadband transmission based on the control information.
In some example embodiments, the second device 120 may also transmit a narrowband signal to the first device based on the second configuration information; and if the second device 120 receives a measurement report from the first device 110 associated with a comparison that the measured received power level of the radio resource in the narrowband signal is below a predetermined threshold power level, transmitting the wideband signal to the first device to cause the first device to perform a further measurement of the radio resource in the wideband mode.
In some example embodiments, the second device 120 may also transmit a narrowband signal to the first device based on the second configuration information to cause the first device to determine phase noise associated with the narrowband signal to perform phase tracking.
In some example embodiments, the first device is a terminal device and the second device is a network device.
In some example embodiments, an apparatus (e.g., implemented at first device 110) capable of performing method 300 may include means for performing the respective steps of method 300. The component may be implemented in any suitable form. For example, the components may be implemented using circuitry or software modules.
In some example embodiments, the apparatus includes means for receiving, from a second device, first configuration information for a broadband signal transmission between a first device and the second device; means for receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and means for transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
In some example embodiments, an apparatus (e.g., implemented at the second device 120) capable of performing the method 400 may include means for performing the respective steps of the method 400. The component may be implemented in any suitable form. For example, the components may be implemented using circuitry or software modules.
In some example embodiments, the apparatus includes means for transmitting, to a first device, first configuration information for broadband signal transmission between the first device and a second device; means for generating second configuration information for narrowband signaling from the second device to the first device; means for transmitting second configuration information to the first device based on the first configuration information; and means for receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
Fig. 5 is a simplified block diagram of a device 500 suitable for implementing embodiments of the present disclosure. Device 500 may be provided to implement communication devices such as terminal device 110 and network device 120 shown in fig. 1. As shown, the device 500 includes one or more processors 510, one or more memories 540 coupled to the processors 510, and one or more transmitters and/or receivers (TX/RX)540 coupled to the processors 510.
TX/RX 540 is used for bi-directional communication. TX/RX 540 has at least one antenna to facilitate communication. A communication interface may represent any interface necessary to communicate with other network elements.
Processor 510 may be of any type suitable for a local technology network, and may include, by way of non-limiting example, one or more of the following: general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs) and processors based on a multi-core processor architecture. The device 500 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock that is synchronized to the main processor.
Memory 520 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memory include, but are not limited to, Read Only Memory (ROM)524, Electrically Programmable Read Only Memory (EPROM), flash memory, a hard disk, a Compact Disk (CD), a Digital Video Disk (DVD), and other magnetic and/or optical storage. Examples of volatile memory include, but are not limited to, Random Access Memory (RAM)522 and other volatile memory that does not persist during a power loss.
The computer programs 530 include computer-executable instructions that are executed by the associated processor 510. The program 530 may be stored in the ROM 520. Processor 510 may perform any suitable actions and processes by loading program 530 into RAM 520.
Embodiments of the present disclosure may be implemented by way of program 530, such that device 500 may perform any of the processes of the present disclosure as discussed with reference to fig. 2-4. Embodiments of the present disclosure may also be implemented by hardware or a combination of software and hardware.
In some embodiments, program 530 may be tangibly embodied in a computer-readable medium, which may be included in device 500 (such as in memory 520) or in other storage accessible to device 500. Device 500 may load program 530 from the computer-readable medium into RAM 522 for execution. The computer readable medium may include any type of tangible, non-volatile memory, such as ROM, EPROM, flash memory, a hard disk, a CD, a DVD, etc. FIG. 6 shows an example of a computer readable medium 600 in the form of a CD or DVD. The program 530 is stored on a computer readable medium.
In general, the various embodiments of the disclosure may be implemented using hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented using hardware, while other aspects may be implemented using firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of the embodiments of the disclosure are illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product comprises computer executable instructions, such as instructions included in program modules, that are executed in a device on a target real or virtual processor to perform the methods 300 and 400 as described above with reference to fig. 3-4. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or split between program modules as desired. Machine-executable instructions of program modules may be executed within local or distributed devices. In a distributed facility, program modules may be located in both local and remote memory storage media.
Program code for performing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present disclosure, computer program code or related data may be carried by any suitable carrier to enable a device, apparatus or processor to perform various processes and operations as described above. Examples of a carrier include a signal, computer readable medium, and the like.
The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a computer-readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Further, while operations are described in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Also, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the disclosure has been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (38)

1. A first device, comprising:
at least one processor; and
at least one memory including computer program code;
the at least one memory and the computer program code configured to, with the at least one processor, cause the first apparatus at least to:
receiving, from a second device, first configuration information of a broadband signal transmission between the first device and the second device;
receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and
transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
2. The first device of claim 1, wherein the second configuration information comprises at least one of:
an identifier of a cell used to carry the narrowband signal transmission,
an offset of a carrier associated with the narrowband signal transmission,
the type of the narrow-band signal is,
the resource blocks allocated for the transmission of the narrowband signal,
an offset of the resource block in question,
the subcarrier spacing of the narrowband signal transmission, an
An offset in power associated with the narrowband signal transmission.
3. The first device of claim 1, wherein the second configuration information is received via one of:
system information broadcast by the second device, or
Signaling designated for the first device.
4. The first device of claim 1, wherein the first device is further caused to:
receiving a configuration message indicating an operation to be performed by the first device using the narrowband signal.
5. The first device of claim 4, wherein the first device is further caused to:
switching to narrowband mode for receiving the narrowband signal based on the second configuration information in response to receiving the configuration message or if it is determined that a preconfigured timer for switching of band mode expires.
6. The first device of claim 5, wherein the first device is further caused to:
receiving the narrowband signal from the second device;
determining control information for further broadband transmission of data from the second device to the first device based on the configuration message;
determining a bandwidth part BWP for the further broadband transmission based on the control information; and
switching to a broadband mode for receiving the data on the BWP in the further transmission.
7. The first device of claim 5, wherein the first device is further caused to:
receiving the narrowband signal from the second device;
determining a measured received power level of radio resources in the narrowband signal by performing a measurement of the radio resources for the narrowband signal based on the configuration message;
comparing the measured received power level to a predetermined threshold power level;
transmitting a measurement report associated with the comparison to the second device if it is determined that the measured power level is below the predetermined threshold power level; and
switching to a broadband mode for performing further measurements of the radio resources in the broadband mode.
8. The first device of claim 5, wherein the first device is further caused to:
receiving the narrowband signal from the second device;
determining a phase noise associated with the narrowband signal based on the configuration message; and
performing phase tracking based on the phase noise.
9. The first device of claim 1, wherein the first device is a terminal device and the second device is a network device.
10. A second device, comprising:
at least one processor; and
at least one memory including computer program code;
the at least one memory and the computer program code configured to, with the at least one processor, cause the second apparatus at least to:
transmitting, to a first device, first configuration information of a broadband signal transmission between the first device and the second device;
generating second configuration information for narrowband signaling from the second device to the first device;
transmitting the second configuration information to the first device based on the first configuration information; and
receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
11. The second device of claim 10, wherein the second configuration information comprises at least one of:
an identifier of a cell used to carry the narrowband signal transmission,
an offset of a carrier associated with the narrowband signal transmission,
the type of the narrow-band signal is,
the resource blocks allocated for the transmission of the narrowband signal,
an offset of the resource block in question,
sub-carrier spacing of said narrowband signal transmission, and
an offset in power associated with the narrowband signal transmission.
12. The second device of claim 10, wherein the second configuration information is transmitted via one of:
system information broadcast by the second device, an
Signaling designated for the first device.
13. The second device of claim 10, wherein the second device is further caused to:
generating a configuration message indicating an operation to be performed by the first device using the narrowband signal; and
transmitting the configuration message to the first device.
14. The second device of claim 13, wherein the second device is further caused to:
generating control information for further broadband transmission of data from the second device to the first device; and
transmitting the control information to the first device via the narrowband signal to cause the first device to switch to a broadband mode for receiving data of a bandwidth part BWP in the further broadband transmission based on the control information.
15. The second device of claim 13, wherein the second device is further caused to:
transmitting the narrowband signal to the first device based on the second configuration information; and
in response to receiving a measurement report from the first device associated with a comparison that a measured received power level of a radio resource in the narrowband signal is below a predetermined threshold power level, transmitting a wideband signal to the first device to cause the first device to perform a further measurement of the radio resource in wideband mode.
16. The second device of claim 13, wherein the second device is further caused to:
transmitting the narrowband signal to the first device based on the second configuration information to cause the first device to determine phase noise associated with the narrowband signal for performing phase tracking.
17. The second device of claim 10, wherein the first device is a terminal device and the second device is a network device.
18. A method, comprising:
receiving, from a second device, first configuration information of a broadband signal transmission between a first device and the second device;
receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and
transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
19. The method of claim 18, wherein the second configuration information comprises at least one of:
an identifier of a cell used to carry the narrowband signal transmission,
an offset of a carrier associated with the narrowband signal transmission,
the type of the narrow-band signal is,
the resource blocks allocated for the transmission of the narrowband signal,
an offset of the resource block in question,
the subcarrier spacing of the narrowband signal transmission, an
An offset in power associated with the narrowband signal transmission.
20. The method of claim 18, wherein the second configuration information is received via one of:
system information broadcast by the second device, or
Signaling designated for the first device.
21. The method of claim 18, further comprising:
receiving a configuration message indicating an operation to be performed by the first device using the narrowband signal.
22. The method of claim 21, further comprising:
switching to a narrowband mode for receiving the narrowband signal based on the second configuration information in response to receiving the configuration message or if it is determined that a preconfigured timer for switching of band modes expires.
23. The method of claim 22, further comprising:
receiving the narrowband signal from the second device;
determining control information for further broadband transmission of data from the second device to the first device based on the configuration message;
determining a bandwidth part BWP for the further broadband transmission based on the control information; and
switching to a broadband mode for receiving the data on the BWP in the further transmission.
24. The method of claim 22, further comprising:
receiving the narrowband signal from the second device;
determining a measured received power level of a radio resource in the narrowband signal by performing a measurement of the radio resource for the narrowband signal based on the configuration message;
comparing the measured received power level to a predetermined threshold power level;
transmitting a measurement report associated with the comparison to the second device if it is determined that the measured power level is below the predetermined threshold power level; and
switching to a broadband mode for performing further measurements of the radio resources in the broadband mode.
25. The method of claim 22, further comprising:
receiving the narrowband signal from the second device;
determining a phase noise associated with the narrowband signal based on the configuration message; and
performing phase tracking based on the phase noise.
26. The method of claim 18, wherein the first device is a terminal device and the second device is a network device.
27. A method, comprising:
transmitting, to a first device, first configuration information of a broadband signal transmission between the first device and a second device;
generating second configuration information for narrowband signaling from the second device to the first device;
transmitting the second configuration information to the first device based on the first configuration information; and
receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
28. The method of claim 27, wherein the second configuration information comprises at least one of:
an identifier of a cell used to carry the narrowband signal transmission,
an offset of a carrier associated with the narrowband signal transmission,
the type of the narrow-band signal is,
the resource blocks allocated for the transmission of the narrowband signal,
an offset of the resource block is set in a manner,
the subcarrier spacing of the narrowband signal transmission, an
An offset in power associated with the narrowband signal transmission.
29. The method of claim 27, wherein the second configuration information is transmitted via one of:
system information broadcast by the second device, an
Signaling designated for the first device.
30. The method of claim 27, further comprising:
generating a configuration message indicating an operation to be performed by the first device using the narrowband signal;
transmitting the configuration message to the first device.
31. The method of claim 30, further comprising:
generating control information for further broadband transmission of data from the second device to the first device; and
-transmitting said control information to said first device via said narrowband signal to cause said first device to switch to a broadband mode for receiving data of a bandwidth portion BWP in said further broadband transmission based on said control information.
32. The method of claim 30, further comprising:
transmitting the narrowband signal to the first device based on the second configuration information; and
in response to receiving a measurement report from the first device associated with a comparison that a measured received power level of a radio resource in the narrowband signal is below a predetermined threshold power level, transmitting a wideband signal to the first device to cause the first device to perform a further measurement of the radio resource in wideband mode.
33. The method of claim 30, further comprising:
transmitting the narrowband signal to the first device based on the second configuration information to cause the first device to determine phase noise associated with the narrowband signal for performing phase tracking.
34. The method of claim 27, wherein the first device is a terminal device and the second device is a network device.
35. An apparatus, comprising:
means for receiving, from a second device, first configuration information for a broadband signal transmission between a first device and the second device;
means for receiving, from the second device, second configuration information for narrowband signaling from the second device to the first device based on the first configuration information; and
means for transmitting a response message indicating that the first device is capable of receiving the narrowband signal.
36. An apparatus, comprising:
means for transmitting first configuration information for broadband signal transmission between a first device and a second device to the first device;
means for generating second configuration information for narrowband signaling from the second device to the first device;
means for transmitting the second configuration information to the first device based on the first configuration information; and
means for receiving a response message from the first device indicating that the first device is capable of receiving the narrowband signal.
37. A non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least a method according to any one of claims 18 to 26.
38. A non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least a method according to any one of claims 27 to 34.
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