1111111111111111 IIIIII IIIII 1111111111 11111 111111111111111 111111111111111 1111111111 11111111
`US 20200260418Al
`
`c19) United States
`c12) Patent Application Publication
`Xue et al.
`
`c10) Pub. No.: US 2020/0260418 Al
`Aug. 13, 2020
`(43) Pub. Date:
`
`(54) DOWNLINK CONTROL INFORMATION
`MONITORING METHOD, TERMINAL, AND
`BASE STATION
`
`(71) Applicant: Huawei Technologies Co., Ltd.,
`Shenzhen (CN)
`
`(72)
`
`Inventors: Yifan Xue, Beijing (CN); Da Wang,
`Shenzhen (CN); Yun Liu, Shenzhen
`(CN); Jian Wang, Beijing (CN)
`
`(21) Appl. No.:
`
`16/637,583
`
`(22) PCT Filed:
`
`Aug. 8, 2017
`
`(86) PCT No.:
`
`PCT /CN2017 /096508
`
`§ 371 (c)(l),
`(2) Date:
`
`Feb. 7, 2020
`
`Publication Classification
`
`(2006.01)
`(2006.01)
`(2006.01)
`
`(51)
`
`(52)
`
`Int. Cl.
`H04W72/04
`H04L 5100
`H04W72/12
`U.S. Cl.
`CPC ......... H04W 721042 (2013.01); H04L 510053
`(2013.01); H04W 7210453 (2013.01); H04W
`7211289 (2013.01); H04W 7210446 (2013.01)
`ABSTRACT
`(57)
`A downlink control information monitoring method, a ter(cid:173)
`minal, and a base station are applied to the field of commu(cid:173)
`nications technologies include monitoring, by the terminal,
`downlink control information in a first time resource unit
`range according to a first rule, and monitoring, by the
`terminal, downlink control information in a second time
`resource unit range according to a second rule, wherein the
`first time resource unit range is different from the second
`time resource unit range, and wherein the first rule is
`different from the second rule.
`
`A tenninal ]nonitors dovvnlink control jnformation jn a first tin1e
`resource unjt range according to a first rule
`
`101
`
`~
`
`The terminal n1(m1tors downlink control infonnation in a second time
`resource unit range according to a second rule, \vhere the first ti1ne
`resource unit range is different from the second tin1e resource unit range,
`and the first rule is djfferent from the second rule
`
`,.....
`10
`L.
`
`~
`
`Ex.1012
`APPLE INC. / Page 1 of 48
`
`

`

`Patent Application Publication Aug. 13, 2020 Sheet 1 of 19
`
`US 2020/0260418 Al
`
`Tem1inal
`
`Base station
`
`FIG. 1
`
`- -
`~ On
`duration - -
`
`Opportlmi iy _ .
`for DR..X
`
`I-- DRX cycle --l
`
`FIG. 2
`
`Ex.1012
`APPLE INC. / Page 2 of 48
`
`

`

`Patent Application Publication Aug. 13, 2020 Sheet 2 of 19
`
`US 2020/0260418 Al
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`
`..., _____ Mini-slot - - - - - - -
`
`t,~:§J Downlink signaling LJ Data transmission
`
`FIG. 3
`
`A tenninal monitors dovvnlink control information in a first time
`resource unit range according to a first rule
`
`101
`
`r
`
`10 2
`
`r
`
`The terminal monitors downlink control infonnation in a second time
`resource unit range according to a second rule, where the first tirne
`resource unit range is different from the second time resource unit range,
`and the first rule is different from the second rule
`
`FIG. 4
`
`Ex.1012
`APPLE INC. / Page 3 of 48
`
`

`

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`FIG. 5
`
`needs to be perfom1ed
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`
`I
`/
`
`---
`
`needs to be performed
`
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`
`Ex.1012
`APPLE INC. / Page 4 of 48
`
`

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`FIG. 6
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`downlink
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`be performed
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`monitoring needs to
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`
`Ex.1012
`APPLE INC. / Page 5 of 48
`
`

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`
`Ex.1012
`APPLE INC. / Page 6 of 48
`
`

`

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`Ex.1012
`APPLE INC. / Page 7 of 48
`
`

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`
`Ex.1012
`APPLE INC. / Page 8 of 48
`
`

`

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`FIG. 10
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`
`Ex.1012
`APPLE INC. / Page 9 of 48
`
`

`

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`FIG. 11
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`
`Ex.1012
`APPLE INC. / Page 10 of 48
`
`

`

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`
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`
`Ex.1012
`APPLE INC. / Page 11 of 48
`
`

`

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`FIG. 13
`
`needs to be performed
`
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`Timer 3
`
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`
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`
`Short sleep
`
`---
`
`needs to be performed
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`
`Ex.1012
`APPLE INC. / Page 12 of 48
`
`

`

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`FIG. 14
`
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`
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`Ex.1012
`APPLE INC. / Page 13 of 48
`
`

`

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`
`FIG. 15
`
`Timer 3
`
`perfom1ed
`
`monitoring needs to be
`
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`monitoring needs to
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`
`Ex.1012
`APPLE INC. / Page 14 of 48
`
`

`

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`
`~ ....
`~
`
`0
`N
`0
`N
`~~
`
`10~
`
`!
`
`I
`I
`I
`
`I
`
`Short sleep
`
`/
`
`lre:SOI"/,
`,.,.
`l
`\
`\
`\
`\
`\
`
`I
`'
`
`\
`
`!
`
`'Riots
`
`\
`
`\
`
`\
`
`' ' \
`
`.................. ~~:::. .........
`
`FIG. 16
`
`monitoring needs to be performed
`
`Slots and mini-slots in which
`
`'
`
`-
`
`\
`
`' ' '
`
`\.
`
`Ex.1012
`APPLE INC. / Page 15 of 48
`
`

`

`> ....
`....
`0 --- 0
`
`QO
`
`.i;...
`0
`O'I
`N
`
`N
`0
`N
`rJJ
`c
`
`....
`0 ....
`Ul
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`1,0
`
`0
`N
`0
`N
`~
`
`~
`
`~ ....
`~
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`FIG. 17
`
`monitoring needs to be perfom1ed
`
`Slots and mini-slots in which
`
`Short sleep
`
`rnonitoring needs to be performed
`
`Slots and mini-slots in ·which
`
`Ex.1012
`APPLE INC. / Page 16 of 48
`
`

`

`> ....
`....
`0 --- 0
`
`QO
`
`.i;...
`0
`O'I
`N
`
`N
`0
`N
`rJJ
`c
`
`....
`0 ....
`O'I
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`1,0
`
`FIG. 18
`
`Short sleep
`
`monitoring needs to be performed
`
`Slots and mini-slots; in v,hich
`
`\
`
`....... __ .......
`'
`'
`Timer 3
`
`.......
`
`\
`
`" '
`
`0
`N
`0
`N
`~
`
`~
`
`~ .....
`
`(')
`
`~ ....
`~
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`\ \
`
`\ \
`
`\
`\
`
`\ ,,
`
`~ ........
`
`Shmi sleep
`
`___ -:::::--:;:::::.----:::::::
`
`monitoring needs to be perfrmned
`
`Slots and mini-slots in which
`
`,,,,,,.,,..
`
`/
`
`I
`I
`
`--1 ,,,,,,.--
`
`Ex.1012
`APPLE INC. / Page 17 of 48
`
`

`

`....
`>
`
`QO
`....
`
`.i;...
`0
`O'I
`N
`
`
`
`---0
`
`0
`N
`0
`N
`
`rJJ
`c
`
`1,0
`....
`
`....
`
`0
`
`-....J
`....
`
`=­('D
`
`('D .....
`
`
`
`rJJ
`
`0
`N
`0
`N
`
`Short sleep
`
`,--------11_,,1./'..__..., .,I'/
`I I I
`I I I
`LLJ
`
`I I I
`I I I
`I I I
`
`FIG. 19
`
`,vhich monitoring
`
`be perfom1ed
`needs to
`
`.�::,,...
`
`Slots and rnini-slots in
`
`--
`
` �
`�
`�
`
`....�
`
`=
`
`.... 0
`
`. (') � .....
`
`-...
`
`= O"
`
`= ""O
`
`.... 0
`
`. (') � .....
` "e
`
`-...
`
`=.....
` t
`
` .....
`
`""O�
`
`('D
`
`Short sleep
`
`which monitoring
`
`be perfonned
`needs to
`
`mini-slots
`
`Slots and
`
`in
`
`Ex.1012
`APPLE INC. / Page 18 of 48
`
`

`

`Patent Application Publication Aug. 13, 2020 Sheet 18 of 19 US 2020/0260418 Al
`
`Tenninal
`
`2000
`
`Processing unit 2010
`
`I
`
`Transceiver lmit 2020
`
`FIG. 20
`
`Base station
`
`2100
`
`Processing ooi t 2110
`
`I
`
`Transceiver unit 2120
`
`FIG. 21
`
`Ex.1012
`APPLE INC. / Page 19 of 48
`
`

`

`Patent Application Publication Aug. 13, 2020 Sheet 19 of 19 US 2020/0260418 Al
`
`2202
`
`2204
`
`2203
`
`Bus system
`
`Transceiver
`
`2205
`
`Processor
`
`Memory
`
`FIG. 22
`
`Data transmission apparatus 1200
`
`Bus 1201
`
`Antenna 1207
`
`\I
`
`A
`
`Bus
`. interface
`.
`1204
`
`A
`
`'
`
`.
`
`Network
`adapter
`1205
`
`-
`
`Storage
`medium
`1203
`
`.
`'
`
`. '
`
`.
`-
`
`User
`interface
`1206
`
`.
`.
`
`. Processor
`.
`1202
`
`FIG. 23
`
`Ex.1012
`APPLE INC. / Page 20 of 48
`
`

`

`US 2020/0260418 Al
`
`Aug. 13, 2020
`
`1
`
`DOWNLINK CONTROL INFORMATION
`MONITORING METHOD, TERMINAL, AND
`BASE STATION
`
`TECHNICAL FIELD
`
`[0001] This application relates to the field of connnunica(cid:173)
`tions technologies, and in particular, to a downlink control
`information monitoring method, a terminal, and a base
`station.
`
`BACKGROUND
`
`[0002]
`In a long term evolution (long term evolution, LTE)
`or new radio (new radio, NR) protocol, a packet-based data
`flow is usually bursty, and there is data transmission in a
`period of time, but there is no data transmission in a next
`relatively long period of time. When there is no data to be
`transmitted, power consumption may be reduced by stop(cid:173)
`ping receiving a physical downlink control channel (physi(cid:173)
`cal downlink control channel, PDCCH), so as to increase a
`battery usage time. This is implemented by using discon(cid:173)
`tinuous reception ( discontinuous reception, DRX) in LTE. In
`LTE, a basic principle of DRX is that a discontinuous
`reception cycle is configured for UE in a radio resource
`control (radio resource control, RRC) connected mode. As
`shown in FIG. 2, a discontinuous reception DRX cycle
`includes an on duration "On Duration" period and an
`opportunity for DRX "Opportunity for DRX" period. In the
`on duration period, user equipment (user equipment, UE)
`monitors and receives a PDCCH, and in the opportunity for
`DRX period, the UE does not receive the PDCCH, to reduce
`power consumption.
`[0003]
`In most cases, after UE is scheduled in a subframe
`and receives or sends data, it is likely that the UE continues
`to be scheduled in next several subframes, and if the UE
`does not receive or send the data but waits until a next
`discontinuous reception cycle, an additional latency is
`caused. To reduce such a latency, after being scheduled, the
`UE remains in an on duration period, that is, the UE
`continuously monitors a PDCCH in the configured on dura(cid:173)
`tion period. An implementation mechanism is as follows:
`Each time the UE is scheduled to initially transmit data, a
`DRX deactivation timer is started (or restarted), and the UE
`is always in an active mode until the timer expires. The DRX
`deactivation timer specifies a plurality of consecutive sub(cid:173)
`frames including a PDCCH that indicates initially transmit(cid:173)
`ted uplink or downlink user data, when the UE remains in
`the active mode after the UE successfully decodes the
`PDCCH. In other words, when the UE has data to be initially
`transmitted and is scheduled, the timer is started or restarted
`once.
`[0004] During the LTE DRX, once the UE is in the active
`mode, the UE monitors a PDCCH in each downlink sub(cid:173)
`frame including the PDCCH before the DRX deactivation
`timer expires. If a monitoring time specified for the DRX
`deactivation timer is excessively short, the UE can monitor
`only a relatively small quantity of PDCCHs. Once the DRX
`deactivation timer expires, the UE enters the opportunity for
`DRX period, and cannot receive or send data but wait until
`an on duration period of a next discontinuous reception
`cycle. If the monitoring time specified for the DRX deacti(cid:173)
`vation timer is excessively long, the UE monitors a large
`quantity of PDCCHs, consuming a large amount of energy.
`In conclusion, the discontinuous reception cycle is not
`
`configured flexibly in the prior art, and there are technical
`problems that service efficiency is low if an excessively
`short on duration period is configured and service power
`consumption is excessively high if an excessively short on
`duration period is configured.
`
`SUMMARY
`
`[0005] The embodiments of this application provide a
`downlink control information monitoring method, a termi(cid:173)
`nal, and a base station, so as to resolve prior-art technical
`problems that because a discontinuous reception cycle is not
`configured flexibly, service efficiency is low if an exces(cid:173)
`sively short on duration period is configured and service
`power consumption is excessively high if an excessively
`short on duration period is configured.
`[0006] According to a first aspect, this application pro(cid:173)
`vides a downlink control information monitoring method,
`where the method includes: monitoring, by a terminal,
`downlink control information in a first time resource unit
`range according to a first rule, and monitoring, by the
`terminal, downlink control information in a second time
`resource unit range according to a second rule, where the
`first time resource unit range is different from the second
`time resource unit range, and the first rule is different from
`the second rule.
`[0007]
`In a possible design, that the first rule is different
`from the second rule includes:
`[0008]
`a monitoring frequency for monitoring, by the
`terminal, the downlink control information in the first time
`resource unit range is different from a monitoring frequency
`for monitoring the downlink control information in the
`second time resource unit range;
`[0009]
`an offset manner for monitoring, by the terminal,
`the downlink control information in the first time resource
`unit range is different from an offset manner for monitoring
`the downlink control information in the second time
`resource unit range; or
`[0010]
`the monitoring frequency and the offset manner for
`monitoring, by the terminal, the downlink control informa(cid:173)
`tion in the first time resource unit range are respectively
`different from the monitoring frequency and the offset
`manner for monitoring the downlink control information in
`the second time resource unit range; where
`[0011]
`the monitoring frequency is a reciprocal of a time
`resource unit interval used to determine, from a plurality of
`time resource units corresponding to a time resource unit
`range, a time resource unit in which monitoring needs to be
`performed, and the offset manner is a manner of determin(cid:173)
`ing, from a plurality of time resource units corresponding to
`a time resource unit range, the first time resource unit in
`which monitoring needs to be performed.
`[0012]
`In a possible design, that the first time resource unit
`range is different from the second time resource unit range
`includes:
`[0013]
`a start moment of the first time resource unit range
`is different from a start moment of the second time resource
`unit range;
`[0014]
`a time length of the first time resource unit range is
`different from a time length of the second time resource unit
`range; or
`[0015]
`the start moment and the time length of the first
`time resource unit range are respectively different from the
`start moment and the time length of the second time resource
`unit range.
`
`Ex.1012
`APPLE INC. / Page 21 of 48
`
`

`

`US 2020/0260418 Al
`
`Aug. 13, 2020
`
`2
`
`[0016]
`In a possible design, the first time resource unit
`range includes a plurality of consecutive time resource units,
`the second time resource unit range includes a plurality of
`consecutive time resource units, and the time resource unit
`is one or a combination of a slot, a mini-slot, a symbol, and
`a subframe.
`[0017]
`In a possible design, the method further includes:
`[0018] when detecting, in a current time resource unit,
`downlink control information used to instruct the terminal to
`receive or send initially transmitted data, determining, by the
`terminal, the start moment and the time length of either of
`the first time resource unit range and the second time
`resource unit range.
`[0019]
`In a possible design, the determining, by the ter(cid:173)
`minal, the start moment and the time length of either of the
`first time resource unit range and the second time resource
`unit range includes:
`[0020] determining, by the terminal, first configuration
`information, where the first configuration information is
`configured by the base station, or the first configuration
`information is preconfigured by the terminal, and the first
`configuration information configures a relative start moment
`and time length of either of the first time resource unit range
`and the second time resource unit range; and
`[0021] determining, by the terminal based on the current
`time resource unit and the first configuration information,
`the start moment and the time length of the either time
`resource unit range based on a plurality of consecutive time
`resource units after the current time resource unit.
`[0022]
`In a possible design, the monitoring, by a terminal,
`downlink control information in a first time resource unit
`range according to a first rule includes:
`[0023] determining, by the terminal, the offset manner and
`the monitoring frequency in the first time resource unit
`range,
`[0024] determining, by the terminal from the plurality of
`time resource units in the first time resource unit range based
`on the offset manner and the monitoring frequency in the
`first time resource unit range, a time resource unit in which
`monitoring needs to be performed, and
`[0025] monitoring, by the terminal in the time resource
`unit that includes a downlink control area and in which
`monitoring needs to be performed, the downlink control
`information sent by the base station to the terminal, where
`a symbol occupied by the downlink control area is used to
`carry the downlink control information; and
`[0026]
`the monitoring, by the terminal, downlink control
`information in a second time resource unit range according
`to a second rule includes:
`[0027] determining, by the terminal, the offset manner and
`the monitoring frequency in the second time resource unit
`range,
`[0028] determining, by the terminal from the plurality of
`time resource units in the second time resource unit range
`based on the offset manner and the monitoring frequency in
`the second time resource unit range, a time resource unit in
`which monitoring needs to be performed, and
`[0029] monitoring, by the terminal in the time resource
`unit that includes a downlink control area and in which
`monitoring needs to be performed, the downlink control
`information sent by the base station to the terminal, where
`a symbol occupied by the downlink control area is used to
`carry the downlink control information.
`
`[0030]
`In a possible design, the determining, by the ter(cid:173)
`minal, the offset manner in either of the first time resource
`unit range and the second time resource unit range includes:
`[0031]
`receiving, by the terminal, first indication informa(cid:173)
`tion sent by the base station, where the first indication
`information indicates the offset manner in the either time
`resource unit range; and determining, by the terminal, the
`offset manner in the either time resource unit range accord(cid:173)
`ing to the first indication information;
`[0032] determining, by the terminal, the offset manner in
`the either time resource unit range based on a preconfigu(cid:173)
`ration;
`[0033] determining, by the terminal, the offset manner in
`the either time resource unit range based on a first function
`relationship that a radio network temporary identifier of the
`terminal meets, where the first function relationship is
`preconfigured by the terminal or the first function relation(cid:173)
`ship is configured by the base station; or
`[0034] determining, by the terminal, the offset manner in
`the either time resource unit range based on a second
`function relationship that the radio network temporary iden(cid:173)
`tifier and a cell identity of the terminal meet, where the
`second function relationship is preconfigured by the terminal
`or the second function relationship is configured by the base
`station.
`[0035]
`In a possible design, the determining, by the ter(cid:173)
`minal, the monitoring frequency in either of the first time
`resource unit range and the second time resource unit range
`includes:
`[0036]
`receiving, by the terminal, second indication infor(cid:173)
`mation sent by the base station, where the second indication
`information indicates the monitoring frequency in the either
`time resource unit range; and determining, by the terminal,
`the monitoring frequency in the either time resource unit
`range according to the second indication information; or
`[0037] determining, by the terminal, the monitoring fre(cid:173)
`quency in the either time resource unit range based on a
`preconfiguration.
`[0038]
`In a possible design, when the start moment of the
`first time resource unit range is different from the start
`moment of the second time resource unit range, the moni(cid:173)
`toring frequency in the time resource unit range with a later
`start moment is lower than or equal to the monitoring
`frequency in the time resource unit range with an earlier start
`moment.
`[0039]
`In a possible design, when the start moment of the
`first time resource unit range is the same as the start moment
`of the second time resource unit range, the monitoring
`frequency in an overlapping time resource unit range of the
`first time resource unit range and the second time resource
`unit range is higher than or equal to the monitoring fre(cid:173)
`quency in a non-overlapping time resource unit range.
`[0040]
`In a possible design, when the terminal re-detects,
`in either of the first time resource unit range and the second
`time resource unit range, downlink control information used
`to instruct the terminal to receive or send initially transmit(cid:173)
`ted data, the terminal returns to the steps of monitoring, by
`the terminal, the downlink control information in the first
`time resource unit range according to the first rule, and
`monitoring, by the terminal, the downlink control informa(cid:173)
`tion in the second time resource unit range according to the
`second rule.
`[0041]
`In a possible design, the method further includes:
`receiving, by the terminal in either of the first time resource
`
`Ex.1012
`APPLE INC. / Page 22 of 48
`
`

`

`US 2020/0260418 Al
`
`Aug. 13, 2020
`
`3
`
`unit range and the second time resource unit range, third
`indication information sent by the base station, where the
`third indication information is used to instruct the terminal
`to stop monitoring downlink control information; and
`[0042] disconnecting, by the terminal, a radio frequency
`link between the terminal and the base station according to
`the third indication information, so that the terminal jumps
`from an active mode to a sleep mode;
`[0043] disconnecting, by the terminal, the radio frequency
`link between the terminal and the base station according to
`the third indication information after the time resource unit
`range for receiving the third indication information expires,
`so that the terminal jumps from the active mode to the sleep
`mode; or
`[0044] disconnecting, by the terminal, the radio frequency
`link between the terminal and the base station according to
`the third indication information after a time resource unit
`range indicated by the base station expires, so that the
`terminal jumps from the active mode to the sleep mode.
`In a possible design, the method further includes:
`[0045]
`receiving, by the terminal in any time resource unit in the
`first time resource unit range and the second time resource
`unit range, fourth indication information sent by the base
`station, where the fourth indication information is used to
`instruct the terminal to switch from the time resource unit to
`a third time resource unit range, a start moment of the third
`time resource unit range is the time resource unit, and the
`time length of the third time resource unit range and the
`monitoring frequency and the offset manner in the third time
`resource unit range are configured by the base station or
`preconfigured by the terminal; and
`[0046] determining, by the terminal according to the
`fourth indication information and the time resource unit, a
`time resource unit in which monitoring needs to be per(cid:173)
`formed in the third time resource range; and monitoring, in
`the time resource unit in which monitoring needs to be
`performed in the third time resource range and that includes
`a downlink control area, downlink control information sent
`by the base station to the terminal.
`In a possible design, the terminal switches to a
`[0047]
`short sleep mode in time resource units in which monitoring
`does not need to be performed in either of the first time
`resource unit range and the second time resource unit range,
`where the time resource units in which monitoring does not
`need to be performed include a time resource unit in the time
`resource unit range other than the time resource unit in
`which monitoring needs to be performed, and further
`include a time resource unit that does not include a downlink
`control area in the time resource unit in which monitoring
`needs to be performed.
`In a possible design, the first time resource unit
`[0048]
`range is determined by using a first timer, and the second
`time resource unit range is determined by using a second
`timer.
`In a possible design, the first time resource unit
`[0049]
`range is determined by using a first counter, and the second
`time resource unit range is determined by using a second
`counter.
`[0050] According to a second aspect, this application
`provides a downlink control
`information monitoring
`method, where the method includes:
`sending, by a base station, first configuration infor(cid:173)
`[0051]
`mation to a terminal, where the first configuration informa(cid:173)
`tion configures a relative start moment and time length of
`
`either of a first time resource unit range and a second time
`resource unit range, so that the terminal determines, based
`on a current time resource unit and the first configuration
`information, the start moment and the time length of the
`either time resource unit range based on a plurality of
`consecutive time resource units after the current time
`resource unit, and the terminal detects, in the current time
`resource unit, downlink control information used to instruct
`the terminal to receive or send initially transmitted data.
`In a possible design, the method further includes:
`[0052]
`sending, by the base station, first indication infor(cid:173)
`[0053]
`mation to the terminal, where the first indication information
`indicates an offset manner in either of the first time resource
`unit range and the second time resource unit range, so that
`the terminal determines the offset manner in the either time
`resource unit range according to the first indication infor(cid:173)
`mation; sending, by the base station to the terminal, a first
`function relationship that a radio network temporary iden(cid:173)
`tifier of the terminal meets, so that the terminal determines
`the offset manner in the either time resource unit range based
`on the first function relationship; or sending, by the base
`station to the terminal, a second function relationship that
`the radio network temporary identifier and a cell identity of
`the terminal meet, so that the terminal determines the of