WO2017035716A1 - 一种频谱共享的方法及装置 - Google Patents
一种频谱共享的方法及装置 Download PDFInfo
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- WO2017035716A1 WO2017035716A1 PCT/CN2015/088454 CN2015088454W WO2017035716A1 WO 2017035716 A1 WO2017035716 A1 WO 2017035716A1 CN 2015088454 W CN2015088454 W CN 2015088454W WO 2017035716 A1 WO2017035716 A1 WO 2017035716A1
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- channel sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for spectrum sharing.
- the unlicensed spectrum resources are larger than the licensed spectrum resources.
- the main technology used on the license-free spectrum is wireless fidelity (WiFi), but WiFi is more mobile, secure, quality of service and simultaneous processing.
- WiFi wireless fidelity
- WiFi is more mobile, secure, quality of service and simultaneous processing.
- LTE long-term evolution
- wireless communication systems in order to utilize the unlicensed spectrum resources more effectively, there may be a plurality of wireless communication systems coexisting on the unlicensed spectrum, for example, LTE and WiFi coexist. Since the use of wireless communication systems and operators is not restricted on the unlicensed spectrum, in order to achieve fairness in the use of unlicensed spectrum by different wireless communication systems and to minimize the harmful effects between multiple systems, wireless communication systems are exempt from licensing. Specific regulatory rules need to be followed when used on the spectrum.
- a mechanism for coexistence of LTE and WiFi is listen before talk (LBT), that is, the wireless communication device listens to the channel and performs clear channel assessment before using the unlicensed spectrum.
- CCA listen before talk
- the LBT-based coexistence mechanism has large changes to protocols, base stations, and terminals. In the case of an increase in network nodes, the competition overhead is large and the efficiency is reduced.
- the protocol version is supported after Release 12, and the commercial deployment time is late.
- LTE cell on/off In order to speed up the pace of commercial deployment and reduce changes in protocols and standards, another mechanism for coexistence of LTE and WiFi is LTE cell on/off. That is, the LTE device periodically turns on and off the signal transmission of the cell, and shares the channel resource with the WiFi in a time division multiplexing manner. Semi-static Cycle adjustment or dynamic cycle adjustment. This method can be based on the protocol version Release 10.
- a device in an LTE system transmits a signal at a maximum power on a licensed spectrum resource, and on a license-free spectrum resource, usually based on interference and load level detection, using cell on/ Channel sharing in the form of off.
- the channel is successfully preempted, the cell is turned on for a certain period of time to perform signal transmission, and the signal transmission of the cell is turned off when the signal usage right is transferred.
- the LTE device exclusively enjoys the unlicensed spectrum in the cell on phase, turns off the signal transmission of the cell in the cell off phase, changes the state from the transmitting state to the receiving state, receives the communication power of the WiFi system, and the communication parameters such as the channel occupancy condition, according to The obtained communication parameters are adjusted according to the channel condition, load, interference, etc. of the occupied channel, and the cycle ratio and occupation time of the cell on/off are adjusted.
- Embodiments of the present invention provide a method and an apparatus for spectrum sharing, which are used to improve utilization of an unlicensed spectrum and improve system capacity.
- a method for spectrum sharing comprising:
- the channel resource allocated to the first device on the unlicensed spectrum is shared by the first device and the at least one second device in the first channel sharing phase;
- the first device employs a first power transmission signal during the first channel sharing phase.
- the first device determines a first power used to transmit a signal in a channel sharing phase on the unlicensed spectrum, including:
- the channel resource of the device is shared by the first device and the at least one second device, and the first channel sharing phase is after the first time period.
- the first device according to the first time period, the first device of the at least one second channel sharing phase Or determining, by the at least one communication parameter of the second device, the first power used to transmit the signal during the first channel sharing phase, including:
- the power level of the signal transmitted by the at least one second device is the power level of the signal transmitted by the at least one second device
- the load size of the at least one second device is the load size of the at least one second device.
- the first device is received by the at least one second channel sharing phase according to the first time period And determining, by the second device, the interference of the signal, determining the first power used by the first channel to share the signal, including:
- the first device is in the at least one second channel sharing phase in the first time period, and the interference level of the signal transmitted by the at least one second device is lower than the first set threshold, the first device is in the first time period.
- the first power used by the at least one second channel sharing phase to transmit the signal is increased by a preset level, and the boosted power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the first device is in the at least one second channel sharing phase in the first time period, and the interference level of the signal transmitted by the at least one second device is higher than the second set threshold, the first device is in the first time period.
- the first power used by the at least one second channel sharing phase to transmit the signal is reduced by a preset level, and the reduced power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the first set threshold is less than the second set threshold.
- the first device determines at least one of the at least one second channel sharing phase in the first time period
- the power of the signal transmitted by the two devices including:
- the measured transmit power of the at least one second device in the second channel sharing phase is measured when each determined measurement interval arrives, and the power level of the at least one second device transmit signal is obtained.
- the first device is a base station
- the first device uses the first power transmission signal in the first channel sharing phase, and includes:
- the base station adopts a first power in the first channel sharing phase, and transmits a signal to a terminal that is within the coverage of the base station and whose distance from the base station is within a determined distance range.
- the method further includes:
- the first device determines a second power used to transmit the signal during the first channel exclusive phase
- the channel resource allocated to the first device on the unlicensed spectrum is occupied by the first device alone in the first channel exclusive phase
- the first device employs a second power transmission signal during the first channel exclusive phase.
- the first device determines, according to the manner, a duration and a first channel occupied by the first channel sharing phase Duration of the exclusive phase:
- At least one second device transmitting signal at least one second channel sharing phase on the unlicensed spectrum The power of the number;
- the first device is a base station
- the base station shares the first power used by the first channel sharing phase and the second power used by the first channel exclusive phase to generate a power variation template.
- the formed template is sent to the terminal within the coverage.
- the first device is a base station
- the base station After determining the first power, the base station further includes:
- the base station acquires the first power determined by the neighboring base station;
- the base station uses the first power transmission signal in the first channel sharing phase, including:
- the base station uses the adjusted first power transmission signal in the first channel sharing phase.
- a device for spectrum sharing including:
- a determining unit configured to determine a first power used by the first channel sharing phase to transmit a signal
- the channel resource allocated to the device on the unlicensed spectrum is shared by the device and the at least one second device in the first channel sharing phase;
- a transmitting unit configured to use the first power transmission signal in the first channel sharing phase.
- the determining unit is specifically configured to:
- the determining unit according to the at least one second channel sharing phase, in the first time period, or The at least one communication parameter of the second device determines a first power used to transmit the signal during the first channel sharing phase:
- the power level of the signal transmitted by the at least one second device is the power level of the signal transmitted by the at least one second device
- the load size of the at least one second device is the load size of the at least one second device.
- the determining unit is further configured to:
- the device is at least one of the first time period
- the first power used by the two-channel sharing phase to transmit the signal is increased by a preset level, and the boosted power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the device is at least one of the first time period
- the first power used by the two-channel sharing phase to transmit the signal is reduced by a preset level, and the reduced power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the first set threshold is less than the second set threshold.
- the determining unit is further configured to:
- the measured transmit power of the at least one second device in the second channel sharing phase is measured when each determined measurement interval arrives, and the power level of the at least one second device transmit signal is obtained.
- the device is a base station
- the determining unit is configured to:
- the transmitting unit is used to:
- a first power is employed during the first channel sharing phase to transmit a signal to a terminal within the coverage of the base station and within a determined distance from the base station.
- the determining unit is further configured to:
- a channel resource allocated to the device on an unlicensed spectrum is occupied by the device alone;
- the transmitting unit is further configured to:
- a second power transmission signal is employed during the first channel exclusive phase.
- the determining unit determines the duration occupied by the first channel sharing phase and the duration occupied by the first channel exclusive phase according to the following manner:
- the device is a base station
- the transmitting unit is further configured to:
- the first power used by the first channel sharing phase to transmit signals and the second power used by the first channel exclusive phase to transmit signals form a template for power variation
- the formed template is sent to the terminal within the coverage.
- the device is a base station, and the base station is Also included is an adjustment unit; the adjustment unit is for:
- the determining unit determines the first power, if the base station shares the unlicensed spectrum with a neighboring base station in the same system, acquiring the first power determined by the neighboring base station; The first power determined by the neighboring base station adjusts the first power determined by itself;
- the transmitting unit is further configured to:
- the adjusted first power transmission signal is employed during the first channel sharing phase.
- the first device determines a first power used to transmit a signal in a first channel sharing phase, and uses a first power transmission signal in the first channel sharing phase, where the first channel is shared.
- the channel resource allocated to the first device on the unlicensed spectrum is occupied by the first device and the at least one second device. In this way, the first device can use the channel simultaneously with the at least one second device on the unlicensed spectrum to achieve the purpose of spectrum sharing, thereby greatly improving spectrum utilization and system capacity.
- FIG. 1 is a schematic diagram of a channel used by an LAA system in the prior art
- FIG. 2 is a schematic diagram of a transmission mode of an unlicensed spectrum according to Embodiment 1 of the present invention.
- FIG. 3 is a flowchart of a method for spectrum sharing according to Embodiment 1 of the present invention.
- FIG. 4 is a schematic diagram of energy distribution and threshold division around a base station according to Embodiment 1 of the present invention.
- FIG. 5 is a schematic diagram of a manner in which a base station schedules a terminal according to Embodiment 1 of the present invention
- FIG. 6 is a structural diagram of a device for spectrum sharing according to Embodiment 2 of the present invention.
- FIG. 7 is a structural diagram of an apparatus for spectrum sharing according to Embodiment 3 of the present invention.
- the method and device for spectrum sharing provided by the embodiments of the present invention are applied to a wireless communication system, and can be applied to an LTE system, a WiFi, and a global interoperability for Microwave access, WiMaX), wideband code division multiple access (WCDMA), time division-synchronous code division multiple access (TDSCDMA), global system for mobile communication (global system for Mobile communication, GSM), Zigbee (Zigbee Protocol), Bluetooth and other wireless communication systems can also be used for uplink data transmission on the terminal side, especially for licensed-assisted access using LTE (LAA-LTE) systems.
- LTE Long Term Evolution
- WiFi Wireless Fidelity
- the LAA-LTE system is to enable the LTE system to maintain the advantages of mobility, security, quality of service, and simultaneous multi-user scheduling when using the unlicensed spectrum, by carrier aggregation (CA).
- CA carrier aggregation
- the LAA-LTE system utilizes the configuration and structure of the CA in the existing LTE system to configure carriers on the operator licensed spectrum, and configure carriers on multiple unlicensed spectrums to assist communication.
- the LAA-LTE system uses unlicensed spectrum resources, it is necessary to comply with local regulations on the use of unlicensed spectrum to reduce interference between channels used by the system and to coexist with other systems.
- the embodiment of the present invention is not limited to the usage scenario of the foregoing CA, and is also applicable to a scenario in which the license-free spectrum is used independently, that is, a scene in which the license-free spectrum operates as an independent carrier.
- the first device is used as an executive body.
- the first device is divided into a channel exclusive phase and a channel sharing phase on the license-free spectrum, and the channel is exclusive.
- the phase means that the first device alone occupies the channel resource allocated to the first device on the unlicensed spectrum, that is, the channel resource allocated by the first device to the first device on the unlicensed spectrum, and the other device is not allowed to use.
- the channel sharing phase means that the first device and the at least one second device jointly occupy the channel resources allocated to the first device on the unlicensed spectrum, that is, the first device is allocated to the first device on the unlicensed spectrum.
- the first device and the second device are devices in the same communication system or devices in different communication systems.
- the first device performs signal transmission on the unlicensed spectrum by using a channel exclusive phase and a channel sharing phase in a cyclical manner.
- a transmission mode may be formed, where the transmission mode includes: a channel exclusive phase and a channel sharing phase. The length of time each is occupied, and the power used by each of the transmitted signals.
- the first device transmits signals by using the same transmission mode, and when the next time period arrives, the signal is transmitted by using the updated transmission mode.
- a method for spectrum sharing provided by Embodiment 1 of the present invention includes:
- Step 300 The first device determines a first power used by the first channel sharing phase to transmit a signal.
- the channel sharing phase on the unlicensed spectrum in the first time period is referred to as the second channel sharing phase, and the channel after the first time period and immediately adjacent to the first time period.
- the sharing phase is called the first channel sharing phase.
- the first device determines, according to the communication parameters of the first device or the second device in the at least one second channel sharing phase in the first time period, the first power used to transmit the signal in the first channel sharing phase;
- the channel resource allocated to the first device on the unlicensed spectrum is shared by the first device and the at least one second device in the second channel sharing phase, where the first channel sharing phase is After the first period of time.
- the duration of the first time period and the duration of the second time period may be equal or may not be equal. That is, the first device can set a cycle period of the same duration, transmit the signal in the same transmission mode in one cycle, and determine the transmission mode adopted in the next cycle based on the parameters measured in the one cycle. Alternatively, when the one cycle period is not completed, the current cycle period is shortened based on the measured parameters, and the signal is transmitted immediately after the updated transmission mode. For example, according to the measurement, the second device uses less channel resources for the unlicensed spectrum, or the scheduled load is smaller, then the first device can immediately adjust the second time period, and the signal is transmitted in the channel sharing phase on the unlicensed spectrum. Power. This can more effectively improve the resource utilization of the unlicensed spectrum.
- the communication parameters include at least one of the following:
- the method for determining, by the first device, the power level of the at least one second device transmitting signal in the at least one second channel sharing phase on the unlicensed spectrum in the first time period is:
- the first device cannot measure the power of the signal transmitted by the second device during the transmission of the signal in the first time period. Therefore, the first device needs to set a period of time to close the transmission in the first time period, and the state is set by The transmission is changed to receive, and the channel of the unlicensed spectrum is intercepted, and the power of the signal transmitted by the second device is determined by the detected energy information.
- different measurement intervals may be preset in the first time period. For example, during the channel sharing phase in the first time period, a certain duration is set as the measurement interval before the data is transmitted.
- the method of using the first power is as follows.
- the entire channel time of the first device on the unlicensed spectrum includes at least one second channel sharing phase, and during the first time period, the transmit power used by the at least one second channel sharing phase does not change.
- the entire channel time of the first device on the unlicensed spectrum includes at least one first channel sharing phase, and during the second time period, at least one first The transmit power (ie, the first transmit power) used in the channel sharing phase does not change.
- the first channel sharing phase determined by the first device is transmitted during a first time period in which the power level of the at least one second device transmit signal decreases within a set power range during the at least one second channel sharing phase
- the first power used by the signal increases.
- the first time period if at least one second in the at least one second channel sharing phase
- the power of the signal transmitted by the device is the minimum value in the set power range, and the first power used by the first channel sharing phase determined by the first device to transmit the signal is the maximum transmit power.
- the power level of the signal transmitted by the at least one second device is A, and the power of the signal transmitted by the first device is B, before the first time period.
- the power level of the signal transmitted by the at least one second device is C in the at least one second channel sharing phase, and if A ⁇ C, the transmitting power used by the first channel in the first channel sharing phase is determined by the first device. Is D, D>B.
- the first device presets, according to the power level of the at least one second device transmitting signal in the at least one second channel sharing phase in the first time period, and adjusts the first power used by the first channel sharing phase to transmit the signal.
- the adjustment mode wherein the adjustment mode is not specifically limited in the embodiment of the present invention, for example, the first device presets, according to the first time period, the power level of the signal transmitted by the at least one second device in the at least one channel sharing phase,
- the first power used to transmit signals in the phase sharing phase with the first channel may be a linear relationship or other functional relationship set, or a specific mapping relationship. The following is exemplified by a specific mapping relationship.
- the power level of the at least one second device transmitting signal is set to a different threshold, and the first power used by the first channel sharing phase to transmit the signal is set differently.
- a power level wherein the threshold value has a corresponding relationship with the power level.
- the power level of the at least one second device transmitting signal is less than the threshold value L 1 in the at least one channel sharing phase in the first time period, determining that the power level of the first power used by the first channel sharing phase to transmit the signal is P N ;
- the power level of the first power used is P N-i+1 ;
- the method for determining, by the first device, the channel resource occupation information of the unlicensed spectrum by the at least one second device in the at least one second channel sharing phase in the first time period is:
- CCA clear channel assessment
- the measurement interval is 50 ms. After the energy is detected, it is determined that the received energy exceeds the first CCA threshold by -70 dBm within 20 ms, and then the channel resource occupancy ratio of the at least one second device to the unlicensed spectrum is determined to be 40%.
- the first device is a base station, and the base station determines the first CCA threshold by:
- the base station determines an initial CCA threshold set according to the energy distribution of the interception in the initial stage of the measurement interval;
- the base station measures the energy distribution as shown in FIG. 4 according to the deployment situation of at least one second device in the initial stage of the measurement interval, and determines the initial CCA threshold set according to the energy distribution to include the threshold.
- A, threshold B and threshold C three CCA thresholds.
- the base station listens to the energy of the at least one second device in the remaining phase of the measurement interval, and compares the measured signal energy with each CCA threshold in the initial CCA threshold set to obtain a corresponding CCA threshold. Ratio of channel resources occupied by the at least one second device to the unlicensed spectrum;
- the channel resource occupation ratio of the at least one second device corresponding to each CCA threshold corresponding to the threshold A, the threshold B, and the threshold C is 30%, 40%, and 50%, respectively.
- the base station determines the channel resource idle ratio according to the proportion of its own channel resource occupancy measured during the signal transmission.
- the channel resource idle ratio refers to a load that can be assumed in addition to the channel resources occupied by the base station in the channel sharing phase.
- the channel resource occupancy ratio of the signal itself is 60%
- the at least one second device that the base station obtains compares the channel resource occupancy ratio of the unlicensed spectrum with the channel resource idle ratio, and selects at least one second device that is closest to the channel resource idle ratio to the unlicensed spectrum. And determining, by the at least one second device, the CCA threshold corresponding to the channel resource occupation ratio of the unlicensed spectrum as the subsequent measurement interval period in the first time period, determining at least one second device pair The first CCA threshold of the channel resource occupation information of the license-free spectrum.
- the base station uses the CCA threshold B corresponding to 40% of the channel resource occupation ratio of the unlicensed spectrum by the at least one second device that is closest to the channel resource idle ratio of 40%, and determines at least the subsequent measurement interval period in the first time period.
- a first CCA threshold of the channel resource occupancy information of the second device to the unlicensed spectrum is determined.
- the setting method of the specific measurement interval is the same as that described in (1), and the repetition will not be described again.
- the first device determines, according to the interference size of the signal transmitted by the at least one second device, in the at least one second channel sharing phase on the unlicensed spectrum in the first time period, determining the first used by the first channel sharing phase to transmit the signal.
- the method of one power is as follows.
- the first device presets, according to the interference size of the signal transmitted by the at least one second device in the at least one second channel sharing phase on the unlicensed spectrum in the first time period, and adjusts the first adopted by the first channel sharing phase to transmit the signal.
- a mode of adjusting the power wherein the adjustment mode is not specifically limited in the embodiment of the present invention, and one of the following examples illustrates a specific adjustment process.
- the first device is in the first device
- the first power used to transmit the signal in the at least one second channel sharing phase is increased by a preset level in a period of time, and the boosted power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the interference level of the signal transmitted by the at least one second device is higher than the second set threshold in the at least one second channel sharing phase, the first device is in the first time period
- the first power used by the at least one second channel sharing phase to transmit the signal is reduced by a preset level, and the reduced power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the first set threshold is less than the second set threshold.
- the first device if the interference level of the signal transmitted by the at least one second device is greater than the third set threshold in the at least one second channel sharing phase on the unlicensed spectrum during the first time period, the first device is in the first channel.
- the sharing phase turns off the launch.
- the first device detects the channel resource occupation information of the at least one second device, and collects the load size of the second device, if the obtained device load size is lower than The magnitude of the load obtained during the first time period is increased by a predetermined threshold by the third set threshold. Conversely, if the obtained load size of the second device is higher than the load size obtained during the first time period, the third set threshold is lowered by a predetermined amount.
- the first device transmits the signal in the first channel sharing phase of the at least one second channel sharing phase on the unlicensed spectrum during the first time period.
- the first power used can also be preset to a linear relationship or other functional relationship set.
- the first device obtains the load size of the first device according to statistics of parameters such as traffic, channel quality, and duration.
- the first device obtains a load size of the at least one second device according to a channel sensing condition of the unlicensed spectrum and an energy measurement according to the measurement interval in the first time period, where the measurement interval is set as in (1) The repetitions are not described again.
- Step 310 The first device uses a first power transmission signal in the first channel sharing phase.
- the first device is in the second time period
- the channel sharing phase on the exempted spectrum uses a first power transmit signal.
- the base station determines a power range in which the first power is located, and determines, in a mapping relationship between the preset power range and the distance range, a power range corresponding to the first power. Range of distances; the base station adopts a first power in a channel sharing phase on the unlicensed spectrum, and transmits a signal to a terminal that is within the coverage of the base station and whose distance from the base station is within a determined distance range.
- the range that can be covered when the first power is the maximum transmit power is determined as the maximum distance range, and the maximum distance range is the upper limit, and the base station center is the lower limit, and the different distance ranges are divided, and the maximum transmit power is used as the upper limit, based on The relationship between the distance ranges and the power range is divided into different power ranges, and the mapping relationship between the power range and the distance range is established.
- the first power falls within the first power range
- the first distance corresponding to the first power range is determined. Range, transmitting a signal to a terminal within the first range of distances.
- the signal is transmitted to the terminal within the maximum distance range, preferably, the signal is transmitted to the terminal at the edge within the maximum distance range; for example, if the first power is the minimum transmit power Then, the signal is transmitted to the terminal near the center of the base station.
- the power value corresponding to the first power is divided into different power levels, where the transmit power corresponding to P N is the maximum transmit power, and the corresponding transmit of P j+1
- N is an integer greater than or equal to 2.
- the terminal located in the jth ring region is preferentially scheduled.
- the method for determining the first power used by the first device to transmit signals in the first channel sharing phase on the unlicensed spectrum is described above.
- the first device determines that the first channel exclusive phase is used to transmit signals on the unlicensed spectrum.
- the second power is transmitted using the second power during the first channel exclusive phase.
- the channel resource allocated to the first device on the unlicensed spectrum is occupied by the first device alone, and therefore the second device is used in the channel exclusive phase.
- the power is the normal transmission power, and the maximum power transmission may be adopted, and the second power may be adjusted according to parameters such as the condition of the own load and the channel resource occupation information.
- the first device may determine, according to the measurement in the first time period, the first power used in the first channel sharing phase after the first time period, and the second power used in the first channel exclusive phase. In addition, according to the measurement in the first time period, it is also necessary to determine the duration occupied by the first channel exclusive phase and the first channel sharing phase, thereby forming a transmission mode.
- the first device determines, according to the manner, the duration occupied by the first channel sharing phase and the duration occupied by the first channel exclusive phase:
- the first device determines a proportion of time occupied by the first channel exclusive phase and the first channel sharing phase according to at least one of the following parameters:
- the measurement method of the above parameters is as described in step 300, and the repeated description is not repeated.
- the first device uses the first power used by the first channel sharing phase to transmit the signal and the second power used by the first channel exclusive phase to transmit the signal after the end of the first time period Forming a template for power variation; and transmitting the formed template to the terminal within the coverage.
- faster signaling can also be used, for example, to notify the terminal of the power used by the currently transmitted signal every 1 ms during the first time period.
- the base station may also combine at least one of the following manners during the measurement interval during the first time period. To determine the time occupied by each of the first channel sharing phase and the channel exclusive phase, and the power used by the signal transmitted during the channel sharing phase.
- the base station notifies the terminal to perform auxiliary measurement and reports the measured value.
- the base station notifies the terminal to measure the received signal strength of the at least one second device, and the channel occupancy duration of the at least one second device is measured and reported, and the base station determines to share the first channel according to the reported result of the terminal.
- the base station adds a receiving channel of the different system, receives the signal of the second device, and parses the received signal, and determines, according to the parsing result, the channel resource of the second device in the at least one second channel sharing phase of the unlicensed spectrum.
- the information is occupied to assist in determining the respective time taken in the first channel sharing phase and the channel exclusive phase, and the first power employed in the channel sharing phase.
- NAV network allocation vector
- the first device and the second device may be the same communication system or different communication systems.
- the following is a method for spectrum sharing when the first device and the second device are the same communication system.
- the first device is a base station, and after the base station determines the first power, if the base station shares the unlicensed spectrum with a neighboring base station in the same system, the base station acquires the first power determined by the neighboring base station;
- the base station uses the adjusted first power transmission signal in the first channel sharing phase.
- the base station acquires the time occupied by the first channel exclusive phase and the first channel sharing phase determined by the neighboring base station, the respective time points, and the power used by the respective transmitting signals, if the base station and the neighboring base station operate in the same manner
- the quotient, the S1 port or the X2 port can be used to exchange the respective load size and the time occupied by the channel exclusive phase and the channel sharing phase, the respective time points and the power used by the respective transmitted signals, if the base station and the adjacent base station operate differently
- the eNB calculates the time and the respective time points of the channel exclusive phase and the channel sharing phase of the neighboring base station by measuring and blindly detecting signals such as cell-specific reference signals (CRS). And the power used by each of the transmitted signals.
- CRS cell-specific reference signals
- the base station negotiates with the neighboring base station according to the obtained time interval of the channel exclusive phase and the channel sharing phase determined by the obtained neighboring base station, the respective time points, and the power used by the respective transmitting signals, and adjusts the first channel exclusive of the base station.
- the channel exclusive phase of the base station occupies 100 ms
- the channel sharing phase takes 150 ms
- the channel exclusive phase of the neighboring base station takes 150 ms
- the channel sharing phase takes 100 ms
- the base station and the neighboring base station The channel exclusive phase and the channel sharing phase can be alternately negotiated.
- the unlicensed spectrum is divided into a channel exclusive phase and a channel sharing phase
- the first device uses the first power transmission signal in the first channel sharing phase on the unlicensed spectrum.
- the first channel exclusive phase on the unlicensed spectrum employs a second power transmit signal and, during off transmission, based on at least one second channel sharing phase on the unlicensed spectrum, at least one second device's load and interference measurements Dynamically adjusting the power of the first power transmission signal, so that the first device can simultaneously use the channel with the at least one second device on the unlicensed spectrum to ensure spectrum sharing under the premise that the interference level between the devices is not improved. Purpose, which greatly improves spectrum utilization and system capacity.
- the first device is a base station
- the first power size adopted in the channel sharing phase on the unlicensed spectrum and the scheduled terminal when the first power changes, the first scheduling and the changed first Eligible terminal corresponding to power, effective The reliability and transmission efficiency of the scheduling terminal are guaranteed.
- the second embodiment of the present invention provides a device 60 for spectrum sharing, including:
- a determining unit 61 configured to determine a first power used by the first channel sharing phase to transmit a signal
- the channel resource allocated to the device on the unlicensed spectrum is shared by the device and the at least one second device in the first channel sharing phase;
- the transmitting unit 62 is configured to adopt a first power transmission signal in the first channel sharing phase.
- the determining unit 61 is specifically configured to:
- the determining unit 61 is configured according to at least one second channel sharing phase in the first time period. Determining, by the device or the second device, at least one of the following communication parameters, determining a first power used to transmit the signal during the first channel sharing phase:
- the power level of the signal transmitted by the at least one second device is the power level of the signal transmitted by the at least one second device
- the load size of the at least one second device is the load size of the at least one second device.
- the determining unit 61 is further configured to:
- the device is at least one of the first time period
- the first power used by the two-channel sharing phase to transmit the signal is increased by a preset level, and the boosted power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the device is at least one of the first time period
- the first power used by the two-channel sharing phase to transmit the signal is reduced by a preset level, and the reduced power is determined as the first power used by the first channel sharing phase to transmit the signal;
- the first set threshold is less than the second set threshold.
- the determining unit 61 is further configured to:
- the measured transmit power of the at least one second device in the second channel sharing phase is measured when each determined measurement interval arrives, and the power level of the at least one second device transmit signal is obtained.
- the device is a base station
- the determining unit 61 is configured to:
- the transmitting unit 62 is configured to:
- a first power is employed during the first channel sharing phase to transmit a signal to a terminal within the coverage of the base station and within a determined distance from the base station.
- the determining unit 61 is further configured to:
- a channel resource allocated to the device on an unlicensed spectrum is occupied by the device alone;
- the transmitting unit 62 is further configured to:
- a second power transmission signal is employed during the first channel exclusive phase.
- the determining unit 61 determines the duration and the duration occupied by the first channel sharing phase according to the following manner. Duration of a channel exclusive phase:
- the device is a base station
- the transmitting unit 62 is further configured to:
- the first power used by the first channel sharing phase to transmit signals and the second power used by the first channel exclusive phase to transmit signals form a template for power variation
- the formed template is sent to the terminal within the coverage.
- the device is a base station,
- the base station further includes an adjusting unit 63; the adjusting unit 63 is configured to:
- the determining unit 61 determines the first power, if the base station shares the unlicensed spectrum with a neighboring base station in the same system, acquiring the first power determined by the neighboring base station; and according to the obtained location Determining the first power determined by the neighboring base station, and adjusting the first power determined by the base station;
- the transmitting unit 62 is further configured to:
- the adjusted first power transmission signal is employed during the first channel sharing phase.
- the device is divided into a channel exclusive phase and a channel sharing phase, and the device 60 uses the first power transmission signal in the channel sharing phase on the unlicensed spectrum.
- the channel exclusive phase on the licensed spectrum employs a second power transmit signal and dynamically adjusts the power of the second power transmit signal based on measurements of load and interference of at least one second device on the unlicensed spectrum during off transmission.
- the channel is used simultaneously with at least one second device on the unlicensed spectrum to achieve the purpose of spectrum sharing, thereby greatly improving spectrum utilization and system capacity.
- the device 60 when the device 60 is a base station, based on the relationship between the first power size adopted in the channel sharing phase on the unlicensed spectrum and the scheduled terminal, when the first power changes, the priority scheduling and the changed first A qualified terminal corresponding to one power effectively ensures the reliability and transmission efficiency of the scheduling terminal.
- the third embodiment of the present invention provides another spectrum sharing apparatus 700, including: a transceiver 701, a processor 702, a memory 703, and a bus 704.
- the device 701, the processor 702, and the memory 703 are all connected to the bus 704, wherein the memory 703 stores a set of programs, and the processor 702 is configured to call a program stored in the memory 703, so that the device 700 performs the method according to the first embodiment of the present invention. Methods.
- the device is divided into a channel exclusive phase and a channel sharing phase on the unlicensed spectrum, and the device 700 uses the first power transmission signal in the channel sharing phase on the unlicensed spectrum.
- the second power transmission signal is employed in the channel exclusive phase on the unlicensed spectrum, and the second power transmission signal is dynamically adjusted based on the measurement of the load and interference of the at least one second device on the unlicensed spectrum during the off transmission
- the power level is such that, under the premise that the interference level between devices is not improved, the channel is used simultaneously with at least one second device on the unlicensed spectrum to achieve the purpose of spectrum sharing, thereby greatly improving spectrum utilization and system capacity.
- the device 700 when the device 700 is a base station, based on the relationship between the first power size adopted in the channel sharing phase on the unlicensed spectrum and the scheduled terminal, when the first power changes, the priority scheduling and the changed first A qualified terminal corresponding to one power effectively ensures the reliability and transmission efficiency of the scheduling terminal.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
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Abstract
本发明实施例提供一种频谱共享的方法及装置,用以提高频谱利用率。该方法为:第一设备确定在免许可频谱上的信道共享阶段发射信号所采用的第一功率,其中,所述信道共享阶段指第一设备与至少一个第二设备共同占用免许可频谱上的所有信道资源,所述第一设备在所述免许可频谱上的信道共享阶段采用第一功率发射信号。这样,通过在信道共享阶段与其他设备共同占用资源,并调整发射功率的大小,可以在保证设备间干扰水平不提升的前提下,大大提高了频谱利用率和系统容量。
Description
本发明涉及通信技术领域,特别涉及一种频谱共享的方法及装置。
目前,免许可(unlicensed)频谱资源要大于许可频谱资源,在免许可频谱上使用的主要技术是无线保真(wireless fidelity,WiFi),但是WiFi在移动性、安全性、服务质量以及同时处理多用户调度方面存在缺陷,因此,若将长期演进(long-term evolution,LTE)设备应用在免许可频谱,不仅可以有效利用免许可频谱资源,还可以提供更为有效的无线接入,以及满足日益增长的移动宽带服务的需求。
在未来的移动通信场景中,为了更有效的利用免许可频谱资源,在免许可频谱上可能会同时存在多种无线通信系统共存,例如,LTE和WiFi共存。由于免许可频谱上对无线通信系统和运营商的使用没有约束,为了实现不同无线通信系统对免许可频谱使用的公平性,以及多系统之间尽可能不造成有害影响,无线通信系统在免许可频谱上使用时需要遵循特定的法规规则。
例如,一种LTE和WiFi共存的机制是先听后说(listen before talk,LBT),即,无线通信设备在使用免许可频谱之前,对信道进行侦听,执行空闲信道评估(clear channel assessment,CCA),如果测得的信号能量超过CCA门限,则认为信道忙,不进行数据发送;否则,认为信道空闲,占用信道进行数据发送。但是,基于LBT的共存机制对协议、基站和终端的改动较大,且在网络节点增多的情况下,竞争开销大,效率降低,另外,协议版本在Release 12之后才支持,商用部署时间晚。
为了加快商用部署步伐,减少协议、标准等的改动,另外一种LTE和WiFi共存的机制是LTE小区开/关(cell on/off)。即,LTE设备周期性的打开和关闭小区的信号发射,采用时分复用的方式与WiFi共享信道资源。采用半静态的
周期调整或者动态的周期调整。该方法可以基于协议版本Release 10。
参阅图1所示,LTE系统内的设备(也可称为LTE设备)在许可频谱资源上以最大功率发射信号,在免许可频谱资源上,通常基于干扰、负载水平的检测,采用cell on/off的形式进行信道共享。成功抢占到信道时,打开小区以一定的功率持续一定时间进行信号发射,出让信号使用权时关闭小区的信号发射。其中,LTE设备在cell on阶段独享免许可频谱,在cell off阶段关闭小区的信号发射,将状态由发送状态更改为接收状态,接收WiFi系统发送信号的功率以及信道占用情况等通信参数,根据获得的通信参数,结合自身占用信道情况、负载、干扰等,调整cell on/off的周期比例和占用时长。
但是,这种采用完全时分的方式复用免许可频谱,频谱效率利用率非常低,不能有效提升系统容量。因此,如何在满足频谱法规,并保持干扰水平不变的前提下,更好的提升系统容量,更好的复用免许可频谱资源,是一个亟待解决的问题。
发明内容
本发明实施例提供一种频谱共享的方法及装置,用以提高免许可频谱的利用率,提升系统容量。
第一方面,提供一种频谱共享的方法,该方法包括:
第一设备确定第一信道共享阶段发射信号所采用的第一功率;
其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述第一设备的信道资源为第一设备与至少一个第二设备共同占用;
所述第一设备在所述第一信道共享阶段采用第一功率发射信号。
结合第一方面,在第一方面的第一种可能的实现方式中,第一设备确定在免许可频谱上的信道共享阶段发射信号所采用的第一功率,包括:
第一设备根据第一时间段内,至少一个第二信道共享阶段的第一设备或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述第一
设备的信道资源为第一设备与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
结合第一方面的第一种可能的实现方式,在第一方面的第二种可能的实现方式中,所述第一设备根据第一时间段内,至少一个第二信道共享阶段的第一设备或第二设备的下述至少一项通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率,包括:
至少一个第二设备发射信号的功率大小;
所述第一设备对免许可频谱的信道资源占用信息;
所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
所述第一设备在信号发射过程中受所述至少一个第二设备发射信号的干扰大小;
所述第一设备的负载大小;
所述至少一个第二设备的负载大小。
结合第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现方式中,所述第一设备根据第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小,确定所述第一信道共享阶段发射信号所采用的第一功率,包括:
所述第一设备若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将第一设备在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
所述第一设备若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将第一设备在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
其中,所述第一设定阈值小于所述第二设定阈值。
结合第一方面的第二种可能的实现方式,在第一方面的第四种可能的实现方式中,所述第一设备确定第一时间段内,至少一个第二信道共享阶段的至少一个第二设备发射信号的功率大小,包括:
所述第一设备确定第一时间段内预设的不同测量间隔,并
在确定的每个测量间隔到来时,对在所述第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
结合第一方面以及第一方面的第一种至第四种可能的实现方式中的任意一种,在第一方面的第五种可能的实现方式中,所述第一设备为基站;
所述第一设备在所述第一信道共享阶段采用第一功率发射信号,包括:
所述基站确定所述第一功率所在的功率范围;并
在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;
所述基站在所述第一信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
结合第一方面的第一种至第五种可能的实现方式中的任意一种,在第一方面的第六种可能的实现方式中,还包括:
第一设备确定在第一信道独享阶段发射信号所采用的第二功率;
其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述第一设备的信道资源为所述第一设备独自占用;
所述第一设备在所述第一信道独享阶段采用第二功率发射信号。
结合第一方面的第六种可能的实现方式,在第一方面的第七种可能的实现方式中,所述第一设备根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:
所述第一设备根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:
在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信
号的功率大小;
在免许可频谱上的至少一个第二信道共享阶段所述第一设备对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
在免许可频谱上的至少一个第二信道共享阶段所述第一设备的负载大小、以及至少一个第二设备的负载大小;
所述第一设备根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并
根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定所述第一信道共享阶段占用的时长。
结合第一方面的第六种或第七种可能的实现方式,在第一方面的第八种可能的实现方式中,所述第一设备为基站;
所述基站在第一时间段结束之后,将所述第一信道共享阶段发射信号所采用的第一功率和所述第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并
将形成的模板发送给覆盖范围内的终端。
结合第一方面、第一方面的第一种至第八种可能的实现方式中的任意一种,在第一方面的第九种可能的实现方式中,所述第一设备为基站;
所述基站在确定出第一功率之后,还包括:
若所述基站与同系统中的相邻基站共享所述免许可频谱,则所述基站获取相邻基站确定出的第一功率;并
根据获取到的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;
所述基站在所述第一信道共享阶段采用第一功率发射信号,包括:
所述基站在所述第一信道共享阶段采用调整后的第一功率发射信号。
第二方面,提供一种频谱共享的装置,包括:
确定单元,用于确定第一信道共享阶段发射信号所采用的第一功率;
其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用;
发射单元,用于在所述第一信道共享阶段采用第一功率发射信号。
结合第二方面,在第二方面的第一种可能的实现方式中,所述确定单元具体用于:
根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
结合第二方面的第一种可能的实现方式,在第二方面的第二种可能的实现方式中,所述确定单元根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的下述至少一项通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率:
至少一个第二设备发射信号的功率大小;
所述装置对免许可频谱的信道资源占用信息;
所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
所述装置在信号发射过程中受所述至少一个第二设备发射信号的干扰大小;
所述装置的负载大小;
所述至少一个第二设备的负载大小。
结合第二方面的第二种可能的实现方式,在第二方面的第三种可能的实现方式中,所述确定单元还用于:
若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
其中,所述第一设定阈值小于所述第二设定阈值。
结合第二方面的第二种可能的实现方式,在第二方面的第四种可能的实现方式中,所述确定单元还用于:
确定第一时间段内预设的不同测量间隔,并
在确定的每个测量间隔到来时,对在所述第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
结合第二方面以及第二方面的第一种至第四种可能的实现方式中的任意一种,在第二方面的第五种可能的实现方式中,所述装置为基站;
所述确定单元用于:
确定所述第一功率所在的功率范围;并
在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;
所述发射单元用于:
在所述第一信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
结合第二方面的第一种至第五种可能的实现方式中的任意一种,在第二方面的第六种可能的实现方式中,所述确定单元还用于:
确定在第一信道独享阶段发射信号所采用的第二功率;
其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述所述装置独自占用;
所述发射单元还用于:
在所述第一信道独享阶段采用第二功率发射信号。
结合第二方面的第六种可能的实现方式,在第二方面的第七种可能的实
现方式中,所述确定单元根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:
根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:
在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小;
在免许可频谱上的至少一个第二信道共享阶段所述所述装置对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
在免许可频谱上的至少一个第二信道共享阶段所述装置的负载大小、以及至少一个第二设备的负载大小;
所述装置根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并
根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定所述第一信道共享阶段占用的时长。
结合第二方面的第六种或第七种可能的实现方式,在第二方面的第八种可能的实现方式中,所述装置为基站;
所述发射单元还用于:
在第一时间段结束之后,将所述第一信道共享阶段发射信号所采用的第一功率和所述第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并
将形成的模板发送给覆盖范围内的终端。
结合第二方面、第二方面的第一种至第八种可能的实现方式中的任意一种,在第二方面的第九种可能的实现方式中,所述装置为基站,则所述基站还包括调整单元;所述调整单元用于:
在所述确定单元确定出第一功率之后,若所述基站与同系统中的相邻基站共享所述免许可频谱,则获取相邻基站确定出的第一功率;并根据获取到
的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;
所述发射单元还用于:
在所述第一信道共享阶段采用调整后的第一功率发射信号。
本发明实施例中,第一设备确定在第一信道共享阶段发射信号所采用的第一功率,并在所述第一信道共享阶段采用第一功率发射信号,其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述第一设备的信道资源为第一设备与至少一个第二设备共同占用。这样,可以使第一设备在免许可频谱上与至少一个第二设备同时使用信道,达到频谱共享的目的,从而大大提高了频谱利用率和系统容量。
图1为现有技术中LAA系统使用信道的示意图;
图2为本发明实施例一中免许可频谱的发送模式示意图;
图3为本发明实施例一提供的频谱共享的方法流程图;
图4为本发明实施例一中基站周围能量分布及门限划分示意图;
图5为本发明实施例一中基站调度终端的方式示意图;
图6为本发明实施例二中频谱共享的装置结构图;
图7为本发明实施例三中频谱共享的装置结构图。
为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
本发明实施例提供的频谱共享的方法及装置应用于无线通信系统,可应用于LTE系统、WiFi、全球微波互联接入(worldwide interoperability for
microwave access,WiMaX)、宽带码分多址(wideband code division multiple access,WCDMA)、时分同步的码分多址技术(time division-synchronous code division multiple access,TDSCDMA)、全球移动通信系统(global system for mobile communication,GSM)、Zigbee(紫蜂协议)、蓝牙等无线通信系统,也可用于终端侧的上行数据发射,尤其应用于许可辅助接入LTE(licensed-assisted access using LTE,LAA-LTE)系统。
其中,LAA-LTE系统是为了使LTE系统在使用免许可频谱时,能保持在移动性、安全性、服务质量以及同时处理多用户调度方面的优势,通过载波聚合(carrier aggregation,CA)的方式,使许可频谱和免许可频谱聚合在一起。LAA-LTE系统利用现有LTE系统中的CA的配置和结构,以配置运营商许可频谱上的载波为主,配置多个免许可频谱上的载波为辅助进行通信。当LAA-LTE系统使用免许可频谱资源时,需要遵从各地对免许可频谱使用制定的规范,以降低系统间竞争使用信道的干扰,与其他系统公平共存。
当然,本发明实施例也不限于上述CA的使用场景,还适用于免许可频谱独立使用的场景,即免许可频谱作为独立的载波工作的场景。
下面将结合具体的实施例对本发明提供的频谱共享的方法及装置进行详细说明。
实施例一、
本发明实施例一以第一设备为执行主体进行介绍,参阅图2所示,本发明实施例一中,第一设备在免许可频谱上分为信道独享阶段和信道共享阶段,信道独享阶段是指第一设备独自占用免许可频谱上分配给所述第一设备的信道资源,即,第一设备在使用免许可频谱上分配给所述第一设备的信道资源,不允许其他设备使用;信道共享阶段指第一设备与至少一个第二设备共同占用免许可频谱上分配给所述第一设备的信道资源,即,第一设备在使用免许可频谱上分配给所述第一设备的信道资源的同时,允许至少一个第二设备共同使用免许可频谱上分配给所述第一设备的信道资源,而不是如现有技术中,无论什么情况下,都采用时分复用的方式使用信道,因此采用本发明实施例
提供的方法能够提高频谱使用效率。其中,第一设备和第二设备为同一通信系统中的设备,或者为不同通信系统中的设备。第一设备在免许可频谱上采用信道独享阶段和信道共享阶段循环交替的方式进行信号的发射,具体地,可形成一种发送模式,所述发送模式包括:信道独享阶段和信道共享阶段各自占用的时长、以及各自发射信号采用的功率。并且,在一定的时间段内,第一设备采用相同的发送模式发射信号,在下一个时间段到来时,采用更新后的发送模式发射信号。
参阅图3所示,本发明实施例一提供的频谱共享的方法,包括:
步骤300:第一设备确定第一信道共享阶段发射信号所采用的第一功率。
需要说明的是,以下实施例中,将第一时间段内,在免许可频谱上的信道共享阶段称为第二信道共享阶段,将第一时间段之后,且紧邻第一时间段内的信道共享阶段称为第一信道共享阶段。
具体地,第一设备根据第一时间段内,至少一个第二信道共享阶段的第一设备或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述第一设备的信道资源为第一设备与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
第一时间段的时长和第二时间段的时长可以相等,也可以不等。即,第一设备可以设置相同时长的循环周期,在一个循环周期内,采用相同的发送模式发送信号,并基于这一个循环周期测量的参数,确定下一个周期采用的发送模式。也可以,在这一个循环周期未结束时,基于测量的参数,缩短本次循环周期,立即采用更新后的发送模式发射信号。比如,根据测量发现第二设备对免许可频谱的信道资源占用较少,或者调度的负载较小,那么第一设备可以立即调整第二时间段内,在免许可频谱上信道共享阶段发射信号采用的功率。这样可以更加有效的提高免许可频谱的资源利用率。
所述通信参数包括以下几项中的至少一项:
(1)至少一个第二设备发射信号的功率大小。
第一设备确定第一时间段内,在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小的方法为:
第一设备确定第一时间段内预设的不同测量间隔,并在确定的每个测量间隔到来时,对在免许可频谱上的至少一个第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
其中,由于第一设备在第一时间段内的发射信号期间,无法对第二设备发射信号的功率进行测量,因此,第一设备需在第一时间段内设置一段时长关闭发射,将状态由发射改为接收,对免许可频谱的信道进行侦听,通过侦听到的能量信息确定第二设备发射信号的功率。具体地,可以在第一时间段内预设不同的测量间隔,例如,在第一时间段内的信道共享阶段内,在发送数据之前,设置一定的时长作为测量间隔。将在第一时间段内的不同测量间隔内测量得到的至少一个第二设备发射信号的功率进行汇总与统计,综合确定第一时间段内,在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小。
第一设备根据测量得到的第一时间段内在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小,确定第一时间段之后的第第一信道共享阶段发射信号所采用的第一功率的方法如下所述。
在第一时间段内,第一设备在免许可频谱上的整个信道时间包括至少一个第二信道共享阶段,在第一时间段内,至少一个第二信道共享阶段采用的发射功率不变,在第一时间段之后,紧邻第一时间段的第二时间段内,第一设备在免许可频谱上的整个信道时间包括至少一个第一信道共享阶段,在第二时间段内,至少一个第一信道共享阶段采用的发射功率(即第一发射功率)不变。
随着在第一时间段内,在至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小在设定功率范围内的减小,所述第一设备确定的第一信道共享阶段发射信号所采用的第一功率增大。
其中,在第一时间段内,若在至少一个第二信道共享阶段至少一个第二
设备发射信号的功率大小为设定功率范围内的最小值,则所述第一设备确定的第一信道共享阶段发射信号所采用的第一功率为最大发射功率。
例如,在第一时间段内,在至少一个第二信道共享阶段上,至少一个第二设备发射信号的功率大小为A,第一设备发射信号的功率大小为B,在第一时间段之前的第零时间段内,在至少一个第二信道共享阶段上,至少一个第二设备发射信号的功率大小为C,若A<C,则,第一设备确定的第一信道共享阶段采用的发射功率为D,D>B。
具体地,第一设备预先设定根据第一时间段内,在至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小,调整第一信道共享阶段发射信号所采用的第一功率的调整模式,其中,本发明实施例中对调整模式不做具体限定,例如,第一设备预先设定根据第一时间段内,在至少一个信道共享阶段至少一个第二设备发射信号的功率大小,与第一信道共享阶段发射信号所采用的第一功率可以为线性关系或设定的其他函数关系,又或者为具体设定的映射关系,下面以一种具体设定的映射关系举例说明。
例:将第一时间段内,在至少一个信道共享阶段,至少一个第二设备发射信号的功率大小设置不同的门限值,将第一信道共享阶段发射信号所采用的第一功率设置不同的功率等级,其中,所述门限值与所述功率等级具有对应关系。具体为:
若第一时间段内,在至少一个信道共享阶段至少一个第二设备发射信号的功率大小小于门限值L1,则确定第一信道共享阶段发射信号所采用的第一功率的功率等级为PN;
若第一时间段内,在至少一个信道共享阶段至少一个第二设备发射信号的功率大小大于或等于门限值Li且小于门限值Li+1,则确定第一信道共享阶段发射信号所采用的第一功率的功率等级为PN-i+1;
其中,门限值Li+1大于门限值Li,PN对应的发射功率为最大发射功率,Pj+1对应的发射功率大于Pj对应的发射功率,i=1,…,N,j=1,…,N,N为大于或等于2的整数。
(2)所述第一设备对免许可频谱的信道资源占用信息。
(3)所述至少一个第二设备对所述免许可频谱的信道资源占用信息。
其中,第一设备确定第一时间段内,在至少一个第二信道共享阶段,至少一个第二设备对所述免许可频谱的信道资源占用信息的方法为:
第一设备确定第一时间段内预设的不同测量间隔,并在确定的每个测量间隔到来时,对在免许可频谱上的信道共享阶段的至少一个第二设备的能量进行侦听,如果测得的信号能量超过空闲信道评估(clear channel assessment,CCA)门限(假设为第一CCA门限),则认为信道占用,否则,认为信道空闲,从而得到至少一个第二设备对所述免许可频谱的信道资源占用信息。
例如,测量间隔为50ms,通过能量的侦听,确定其中20ms内接收的能量超过第一CCA门限-70dBm,则判定至少一个第二设备对免许可频谱的信道资源占用比例为40%。
较佳地,第一设备为基站,基站通过以下方式确定第一CCA门限:
1)基站在测量间隔初始阶段,根据侦听的能量分布情况,确定初始的CCA门限集合;
例如,参阅图4所示,基站在测量间隔初始阶段,根据周围至少一个第二设备的部署情况,测量得到如图4所示的能量分布情况,根据能量分布情况确定初始的CCA门限集合包括门限A、门限B和门限C三个CCA门限。
2)基站在测量间隔的剩余阶段内,对至少一个第二设备的能量进行侦听,并将测量的信号能量分别于初始的CCA门限集合中的每一个CCA门限进行比较,获得各个CCA门限对应的至少一个第二设备对所述免许可频谱的信道资源占用比例;
例如,门限A、门限B和门限C对应的获得各个CCA门限对应的至少一个第二设备对所述免许可频谱的信道资源占用比例分别为30%、40%、50%。
3)基站根据信号发射期间统计的自身的信道资源占用比例,确定信道资源空闲比例。所述信道资源空闲比例是指在信道共享阶段,所有信道资源除去基站自身占用的信道资源以外,还可承担的负荷。
比如,信号发射期间统计的自身的信道资源占用比例为60%,则信道资源空闲比例为1-60%=40%。
4)基站将获得的至少一个第二设备对所述免许可频谱的信道资源占用比例分别与信道资源空闲比例进行比较,选择最接近信道资源空闲比例的至少一个第二设备对所述免许可频谱的信道资源占用比例,并将选择的至少一个第二设备对所述免许可频谱的信道资源占用比例对应的CCA门限值作为第一时间段内后续测量间隔期间,判断至少一个第二设备对所述免许可频谱的信道资源占用信息的第一CCA门限。
例如,基站采用最接近信道资源空闲比例40%的至少一个第二设备对所述免许可频谱的信道资源占用比例40%对应的CCA门限B,作为第一时间段内后续测量间隔期间,判断至少一个第二设备对所述免许可频谱的信道资源占用信息的第一CCA门限。
具体测量间隔的设置方法与(1)中描述相同,重复之处不再赘述。
(4)所述第一设备在信号发射过程中受所述至少一个第二设备发射信号的干扰大小。
具体地,第一设备根据第一时间段内,在免许可频谱上的至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小,确定第一信道共享阶段发射信号所采用的第一功率的方法如下所述。
第一设备预先设定根据第一时间段内,在免许可频谱上的至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小,调整第一信道共享阶段发射信号所采用的第一功率的调整模式,其中,本发明实施例中对调整模式不做具体限定,下面举出其中一种示例说明具体的调整过程。
第一设备若在第一时间段内,在免许可频谱上的至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将第一设备在第一时间段内在至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为第一信道共享阶段发射信号所采用的第一功率;
所述第一设备若在第一时间段内,在至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将第一设备在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为第一信道共享阶段发射信号所采用的第一功率;
其中,所述第一设定阈值小于所述第二设定阈值。
另外,第一设备若在第一时间段内,在免许可频谱上的至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小高于第三设定阈值,则在第一信道共享阶段关闭发射。并且,在第二时间段内关闭发射期间,第一设备对至少一个第二设备的信道资源占用信息进行测量,并统计第二设备的负载大小,若获得的第二设备的负载大小低于在第一时间段内获得的负载大小,则将第三设定阈值上调预定幅度。相反,若获得的第二设备的负载大小高于在第一时间段内获得的负载大小,则将第三设定阈值下调预定幅度。
当然,第一设备在第一时间段内,在免许可频谱上的至少一个第二信道共享阶段受至少一个第二设备发射信号的干扰大小,与第一设备在第一信道共享阶段发射信号所采用的第一功率,也可以预先设置为线性关系或设定的其他函数关系。
(5)所述第一设备的负载大小。
第一设备根据流量、信道质量、占用时长等参数的统计,获得第一设备的负载大小。
(6)所述至少一个第二设备的负载大小。
第一设备根据在第一时间段内的测量间隔内,对免许可频谱的信道侦听情况,以及能量测量,得到至少一个第二设备的负载大小,其中,测量间隔的设置如(1)中所述,重复之处不再赘述。
步骤310:所述第一设备在所述第一信道共享阶段采用第一功率发射信号。
具体地,基于第一时间段的测量结果,第一设备在第二时间段内,在所
述免许可频谱上的信道共享阶段采用第一功率发射信号。
其中,若所述第一设备为基站,则基站确定所述第一功率所在的功率范围;并在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;所述基站在所述免许可频谱上的信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
具体地,将第一功率为最大发射功率时能够覆盖的范围确定为最大距离范围,以最大距离范围为上限,以基站中心为下限,划分不同的距离范围,以最大发射功率为上限,基于与距离范围一一对应的关系,将功率划分为不同的功率范围,建立功率范围与距离范围的映射关系,当第一功率落在第一功率范围时,确定与第一功率范围对应的第一距离范围,向所述第一距离范围内的终端发射信号。例如,若第一功率为最大发射功率,则向最大距离范围内的终端发射信号,较佳地,优先向最大距离范围内处于边缘的终端发射信号;又例如,若第一功率为最小发射功率,则优先向靠近基站中心的终端发射信号。
下面结合具体的例子具体说明本发明实施例一调度终端的方式。
参阅图5所示,假设基站覆盖范围中圆形区域,将第一功率对应的功率值划分为不同的功率等级,其中,PN对应的发射功率为最大发射功率,Pj+1对应的发射功率大于Pj对应的发射功率,j=1,…,N,最大发射功率的覆盖范围被划分为N个环形区域,第一个环形区域为中心区域,且第N个环形区域为边缘区域,N为大于或等于2的整数。
那么,若确定出在所述信道共享阶段的发射功率等级为Pj,优先调度位于第j个环形区域内的终端。
以上介绍了第一设备在免许可频谱上的第一信道共享阶段发射信号采用的第一功率的确定方法,另外,第一设备确定在免许可频谱上的第一信道独享阶段发射信号所采用的第二功率,并在所述第一信道独享阶段采用第二功率发射信号。
其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述第一设备的信道资源为所述第一设备独自占用,因此第一设备在信道独享阶段采用的第二功率为正常发射功率,可采用最大功率发射,也可根据自身负载的情况和信道资源占用信息等参数调整第二功率的大小。
至此,第一设备可根据第一时间段内的测量,确定第一时间段之后的第第一信道共享阶段采用的第一功率,以及第一信道独享阶段采用的第二功率。另外,根据第一时间段内的测量,还需确定第一信道独享阶段和第一信道共享阶段各自占用的时长,以此形成发送模式。
具体地,第一设备根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:
第一设备根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:
在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小;
在免许可频谱上的至少一个第二信道共享阶段所述第一设备对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
在免许可频谱上的至少一个第二信道共享阶段所述第一设备的负载大小、以及至少一个第二设备的负载大小;
其中,上述参数的测量方式如步骤300中所述,重复之处不再赘述。
所述第一设备根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定第一信道共享阶段占用的时长。
若所述第一设备为基站,则第一设备在第一时间段结束之后,将第一信道共享阶段发射信号所采用的第一功率和第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并将形成的模板发送给覆盖范围内的终端。
当然,也可使用更加快速的信令通知,例如,在第一时间段内,每隔1ms通知终端当前发射信号采用的功率。
此外,需要说明的是,若第一设备为基站,第一设备和第二设备为异通信系统,则基站在第一时间段内,在测量间隔期间,还可结合以下方式中的至少一种来确定第一信道共享阶段和信道独享阶段各自占用的时间,以及信道共享阶段发射信号采用的功率。
第一种,基站通知终端进行辅助测量,并上报测量值。
基站通过配置A3等测量事件,通知终端对至少一个第二设备的接收信号强度,以及至少一个第二设备的信道占用时长进行测量后并上报,根据终端的上报结果,辅助确定在第一信道共享阶段和第一信道独享阶段各自占用的时间,以及信道共享阶段采用的第一功率。
第二种,基站增加异系统的接收信道,接收第二设备的信号,并对接收到的信号进行解析,根据解析结果确定第二设备在免许可频谱的至少一个第二信道共享阶段的信道资源占用信息,从而辅助确定在第一信道共享阶段和信道独享阶段各自占用的时间,以及信道共享阶段采用的第一功率。
其中,对接收到信号进行解析的过程中,解析网络分配矢量(network allocation vector,NAV),获得第二设备在免许可频谱的信道共享阶段的信道资源占用时间。
以上叙述的频谱共享的方法中,第一设备和第二设备可以为同一通信系统,也可以为不同的通信系统。下面针对第一设备和第二设备为同一通信系统时,还可以采用的频谱共享的方法。
具体为:
第一设备为基站,基站在确定出第一功率之后,若所述基站与同系统中的相邻基站共享所述免许可频谱,则所述基站获取相邻基站确定出的第一功率;
根据获取到的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;
所述基站在所述第一信道共享阶段采用调整后的第一功率发射信号。
较佳地,基站获取相邻基站确定出的第一信道独享阶段和第一信道共享阶段各自占用的时间、各自的时间点以及各自发射信号采用的功率,若基站与相邻基站为同运营商,则可以通过S1口或X2口交互各自的负载大小和信道独享阶段和信道共享阶段各自占用的时间、各自的时间点以及各自发射信号采用的功率,若基站与相邻基站为异运营商,则基站通过对小区专属导频信号(cell-specific reference signals,CRS)等信号的测量和盲检测,获取相邻基站的信道独享阶段和信道共享阶段各自占用的时间、各自的时间点以及各自发射信号采用的功率。
基站根据获得的相邻基站确定出的信道独享阶段和信道共享阶段各自占用的时间、各自的时间点以及各自发射信号采用的功率,与相邻基站进行协商,调整自身的第一信道独享阶段和第一信道共享阶段各自占用的时间、各自的时间点以及各自发射信号采用的功率。
例如,如果基站的信道独享阶段占用时间为100ms,信道共享阶段占用时间为150ms,相邻基站的信道独享阶段占用时间为150ms,信道共享阶段占用时间为100ms,则基站与相邻基站则可通过协商,交替进行信道独享阶段和信道共享阶段。
综上所述,本发明实施例一中,在免许可频谱上分为信道独享阶段和信道共享阶段,第一设备在免许可频谱上的第一信道共享阶段采用第一功率发射信号,在免许可频谱上的第一信道独享阶段采用第二功率发射信号,并在关闭发射期间,基于在免许可频谱上的至少一个第二信道共享阶段,至少一个第二设备的负载及干扰的测量,动态调整第一功率发射信号的功率大小,这样,在保证设备间干扰水平不提升的前提下,可以使第一设备在免许可频谱上与至少一个第二设备同时使用信道,达到频谱共享的目的,从而大大提高了频谱利用率和系统容量。另外,第一设备为基站时,基于在免许可频谱上的信道共享阶段采用的第一功率大小与调度的终端之间的关系,当第一功率发生变化时,优先调度与变化后的第一功率对应的符合条件的终端,有效
保证了调度终端的可靠性和传输效率。
实施例二、
基于上述实施例一,参阅图6所示,本发明实施例二提供一种频谱共享的装置60,包括:
确定单元61,用于确定第一信道共享阶段发射信号所采用的第一功率;
其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用;
发射单元62,用于在所述第一信道共享阶段采用第一功率发射信号。
结合上述实施例二,在上述实施例二的第一种可能的实现方式中,所述确定单元61具体用于:
根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
结合上述实施例二的第一种可能的实现方式,在上述实施例二的第二种可能的实现方式中,所述确定单元61根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的下述至少一项通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率:
至少一个第二设备发射信号的功率大小;
所述装置对免许可频谱的信道资源占用信息;
所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
所述装置在信号发射过程中受所述至少一个第二设备发射信号的干扰大小;
所述装置的负载大小;
所述至少一个第二设备的负载大小。
结合上述实施例二的第二种可能的实现方式,在上述实施例二的第三种
可能的实现方式中,所述确定单元61还用于:
若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;
其中,所述第一设定阈值小于所述第二设定阈值。
结合上述实施例二的第二种可能的实现方式,在上述实施例二的第四种可能的实现方式中,所述确定单元61还用于:
确定第一时间段内预设的不同测量间隔,并
在确定的每个测量间隔到来时,对在所述第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
结合上述实施例二以及上述实施例二的第一种至第四种可能的实现方式中的任意一种,在上述实施例二的第五种可能的实现方式中,所述装置为基站;
所述确定单元61用于:
确定所述第一功率所在的功率范围;并
在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;
所述发射单元62用于:
在所述第一信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
结合上述实施例二的第一种至第五种可能的实现方式中的任意一种,在上述实施例二的第六种可能的实现方式中,所述确定单元61还用于:
确定在第一信道独享阶段发射信号所采用的第二功率;
其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述所述装置独自占用;
所述发射单元62还用于:
在所述第一信道独享阶段采用第二功率发射信号。
结合上述实施例二的第六种可能的实现方式,在上述实施例二的第七种可能的实现方式中,所述确定单元61根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:
根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:
在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小;
在免许可频谱上的至少一个第二信道共享阶段所述所述装置对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;
在免许可频谱上的至少一个第二信道共享阶段所述装置的负载大小、以及至少一个第二设备的负载大小;
所述装置根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并
根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定所述第一信道共享阶段占用的时长。
结合上述实施例二的第六种或第七种可能的实现方式,在上述实施例二的第八种可能的实现方式中,所述装置为基站;
所述发射单元62还用于:
在第一时间段结束之后,将所述第一信道共享阶段发射信号所采用的第一功率和所述第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并
将形成的模板发送给覆盖范围内的终端。
结合上述实施例二、上述实施例二的第一种至第八种可能的实现方式中的任意一种,在上述实施例二的第九种可能的实现方式中,所述装置为基站,则所述基站还包括调整单元63;所述调整单元63用于:
在所述确定单元61确定出第一功率之后,若所述基站与同系统中的相邻基站共享所述免许可频谱,则获取相邻基站确定出的第一功率;并根据获取到的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;
所述发射单元62还用于:
在所述第一信道共享阶段采用调整后的第一功率发射信号。
综上所述,本发明实施例二中,在免许可频谱上分为信道独享阶段和信道共享阶段,所述装置60在免许可频谱上的信道共享阶段采用第一功率发射信号,在免许可频谱上的信道独享阶段采用第二功率发射信号,并在关闭发射期间,基于在免许可频谱上的至少一个第二设备的负载及干扰的测量,动态调整第二功率发射信号的功率大小,这样,在保证设备间干扰水平不提升的前提下,使得在免许可频谱上与至少一个第二设备同时使用信道,达到频谱共享的目的,从而大大提高了频谱利用率和系统容量。另外,所述装置60为基站时,基于在免许可频谱上的信道共享阶段采用的第一功率大小与调度的终端之间的关系,当第一功率发生变化时,优先调度与变化后的第一功率对应的符合条件的终端,有效保证了调度终端的可靠性和传输效率。
实施例三、
基于上述实施例一和上述实施例二,参阅图7所示,本发明实施例三提供另一种频谱共享的装置700,包括:包括收发器701、处理器702、存储器703和总线704,收发器701、处理器702、存储器703均与总线704连接,其中,存储器703中存储一组程序,处理器702用于调用存储器703中存储的程序,使得装置700执行如本发明实施例一所述的方法。
在本发明实施例三中,在免许可频谱上分为信道独享阶段和信道共享阶段,所述装置700在免许可频谱上的信道共享阶段采用第一功率发射信号,
在免许可频谱上的信道独享阶段采用第二功率发射信号,并在关闭发射期间,基于在免许可频谱上的至少一个第二设备的负载及干扰的测量,动态调整第二功率发射信号的功率大小,这样,在保证设备间干扰水平不提升的前提下,使得在免许可频谱上与至少一个第二设备同时使用信道,达到频谱共享的目的,从而大大提高了频谱利用率和系统容量。另外,所述装置700为基站时,基于在免许可频谱上的信道共享阶段采用的第一功率大小与调度的终端之间的关系,当第一功率发生变化时,优先调度与变化后的第一功率对应的符合条件的终端,有效保证了调度终端的可靠性和传输效率。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的
处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (20)
- 一种频谱共享的方法,其特征在于,包括:第一设备确定第一信道共享阶段发射信号所采用的第一功率;其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述第一设备的信道资源为第一设备与至少一个第二设备共同占用;所述第一设备在所述第一信道共享阶段采用第一功率发射信号。
- 如权利要求1所述的方法,其特征在于,第一设备确定在免许可频谱上的信道共享阶段发射信号所采用的第一功率,包括:第一设备根据第一时间段内,至少一个第二信道共享阶段的第一设备或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述第一设备的信道资源为第一设备与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
- 如权利要求2所述的方法,其特征在于,所述第一设备根据第一时间段内,至少一个第二信道共享阶段的第一设备或第二设备的下述至少一项通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率,包括:至少一个第二设备发射信号的功率大小;所述第一设备对免许可频谱的信道资源占用信息;所述至少一个第二设备对所述免许可频谱的信道资源占用信息;所述第一设备在信号发射过程中受所述至少一个第二设备发射信号的干扰大小;所述第一设备的负载大小;所述至少一个第二设备的负载大小。
- 如权利要求3所述的方法,其特征在于,所述第一设备根据第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小,确定所述第一信道共享阶段发射信号所采用的第一功率,包括:所述第一设备若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将第一设备在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;所述第一设备若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将第一设备在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;其中,所述第一设定阈值小于所述第二设定阈值。
- 如权利要求3所述的方法,其特征在于,所述第一设备确定第一时间段内,至少一个第二信道共享阶段的至少一个第二设备发射信号的功率大小,包括:所述第一设备确定第一时间段内预设的不同测量间隔,并在确定的每个测量间隔到来时,对在所述第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
- 如权利要求1-5任一项所述的方法,其特征在于,所述第一设备为基站;所述第一设备在所述第一信道共享阶段采用第一功率发射信号,包括:所述基站确定所述第一功率所在的功率范围;并在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;所述基站在所述第一信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
- 如权利要求2-6任一项所述的方法,其特征在于,还包括:第一设备确定在第一信道独享阶段发射信号所采用的第二功率;其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述第一设备的信道资源为所述第一设备独自占用;所述第一设备在所述第一信道独享阶段采用第二功率发射信号。
- 如权利要求7所述的方法,其特征在于,所述第一设备根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:所述第一设备根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小;在免许可频谱上的至少一个第二信道共享阶段所述第一设备对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;在免许可频谱上的至少一个第二信道共享阶段所述第一设备的负载大小、以及至少一个第二设备的负载大小;所述第一设备根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定所述第一信道共享阶段占用的时长。
- 如权利要求7或8所述的方法,其特征在于,所述第一设备为基站;所述基站在第一时间段结束之后,将所述第一信道共享阶段发射信号所采用的第一功率和所述第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并将形成的模板发送给覆盖范围内的终端。
- 如权利要求1-9任一项所述的方法,其特征在于,所述第一设备为基站;所述基站在确定出第一功率之后,还包括:若所述基站与同系统中的相邻基站共享所述免许可频谱,则所述基站获 取相邻基站确定出的第一功率;并根据获取到的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;所述基站在所述第一信道共享阶段采用第一功率发射信号,包括:所述基站在所述第一信道共享阶段采用调整后的第一功率发射信号。
- 一种频谱共享的装置,其特征在于,包括:确定单元,用于确定第一信道共享阶段发射信号所采用的第一功率;其中,在所述第一信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用;发射单元,用于在所述第一信道共享阶段采用第一功率发射信号。
- 如权利要求11所述的装置,其特征在于,所述确定单元具体用于:根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率;其中,在所述第二信道共享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述装置与至少一个第二设备共同占用,所述第一信道共享阶段在所述第一时间段之后。
- 如权利要求12所述的装置,其特征在于,所述确定单元根据第一时间段内,至少一个第二信道共享阶段的所述装置或第二设备的下述至少一项通信参数,确定在所述第一信道共享阶段发射信号所采用的第一功率:至少一个第二设备发射信号的功率大小;所述装置对免许可频谱的信道资源占用信息;所述至少一个第二设备对所述免许可频谱的信道资源占用信息;所述装置在信号发射过程中受所述至少一个第二设备发射信号的干扰大小;所述装置的负载大小;所述至少一个第二设备的负载大小。
- 如权利要求13所述的装置,其特征在于,所述确定单元还用于:若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小低于第一设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率提升一个预设等级,并将提升后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;若在第一时间段内,至少一个第二信道共享阶段,受至少一个第二设备发射信号的干扰大小高于第二设定阈值,则将所述装置在第一时间段内的至少一个第二信道共享阶段发射信号所采用的第一功率降低一个预设等级,并将降低后的功率确定为所述第一信道共享阶段发射信号所采用的第一功率;其中,所述第一设定阈值小于所述第二设定阈值。
- 如权利要求13所述的装置,其特征在于,所述确定单元还用于:确定第一时间段内预设的不同测量间隔,并在确定的每个测量间隔到来时,对在所述第二信道共享阶段的至少一个第二设备的发射功率进行测量,得到至少一个第二设备发射信号的功率大小。
- 如权利要求11-15任一项所述的装置,其特征在于,所述装置为基站;所述确定单元用于:确定所述第一功率所在的功率范围;并在预设的功率范围和距离范围的映射关系中,确定所述第一功率所在的功率范围对应的距离范围;所述发射单元用于:在所述第一信道共享阶段采用第一功率,向处于所述基站覆盖范围内、且与所述基站的距离在确定的距离范围内的终端发射信号。
- 如权利要求12-16任一项所述的装置,其特征在于,所述确定单元还用于:确定在第一信道独享阶段发射信号所采用的第二功率;其中,在所述第一信道独享阶段中,在免许可频谱上分配给所述所述装置的信道资源为所述所述装置独自占用;所述发射单元还用于:在所述第一信道独享阶段采用第二功率发射信号。
- 如权利要求17所述的装置,其特征在于,所述确定单元根据下述方式确定第一信道共享阶段所占用的时长和第一信道独享阶段所占用的时长:根据下述参数中的至少一项确定所述第一信道独享阶段和所述第一信道共享阶段所占用的时间比例:在免许可频谱上的至少一个第二信道共享阶段至少一个第二设备发射信号的功率大小;在免许可频谱上的至少一个第二信道共享阶段所述所述装置对免许可频谱的信道资源占用信息,以及所述至少一个第二设备对所述免许可频谱的信道资源占用信息;在免许可频谱上的至少一个第二信道共享阶段所述装置的负载大小、以及至少一个第二设备的负载大小;所述装置根据当前业务的服务质量要求QoS确定所述信道独享阶段占用的时长;并根据确定的所述第一信道独享阶段占用的时长和所述时间比例,确定所述第一信道共享阶段占用的时长。
- 如权利要求17或18所述的装置,其特征在于,所述装置为基站;所述发射单元还用于:在第一时间段结束之后,将所述第一信道共享阶段发射信号所采用的第一功率和所述第一信道独享阶段发射信号所采用的第二功率,形成功率变化的模板;并将形成的模板发送给覆盖范围内的终端。
- 如权利要求11-19任一项所述的装置,其特征在于,所述装置为基站,则所述基站还包括调整单元;所述调整单元用于:在所述确定单元确定出第一功率之后,若所述基站与同系统中的相邻基站共享所述免许可频谱,则获取相邻基站确定出的第一功率;并根据获取到的所述相邻基站确定出的第一功率,调整自身确定出的第一功率;所述发射单元还用于:在所述第一信道共享阶段采用调整后的第一功率发射信号。
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CN104540141A (zh) * | 2015-01-19 | 2015-04-22 | 桂林电子科技大学 | 多用户混合式频谱共享方法和系统 |
CN104837140A (zh) * | 2014-02-09 | 2015-08-12 | 上海朗帛通信技术有限公司 | 一种在非授权频谱上的通信方法和装置 |
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US20130343288A1 (en) * | 2012-06-21 | 2013-12-26 | Nokia Corporation | Power Control For LTE Deployment In Unlicensed Band |
CN103763708A (zh) * | 2014-01-23 | 2014-04-30 | 上海无线通信研究中心 | 一种网络频谱共享方法 |
CN104837140A (zh) * | 2014-02-09 | 2015-08-12 | 上海朗帛通信技术有限公司 | 一种在非授权频谱上的通信方法和装置 |
CN104540141A (zh) * | 2015-01-19 | 2015-04-22 | 桂林电子科技大学 | 多用户混合式频谱共享方法和系统 |
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CN110149626A (zh) * | 2018-02-13 | 2019-08-20 | 华为技术有限公司 | 一种确定终端设备发送模式的方法及装置 |
US11212754B2 (en) | 2018-02-13 | 2021-12-28 | Huawei Technologies Co., Ltd. | Method and apparatus for determining transmission mode of terminal device |
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