RU2014138943A - Схема множественного доступа и структура сигнала для d2d коммуникаций - Google Patents

Схема множественного доступа и структура сигнала для d2d коммуникаций Download PDF

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RU2014138943A
RU2014138943A RU2014138943A RU2014138943A RU2014138943A RU 2014138943 A RU2014138943 A RU 2014138943A RU 2014138943 A RU2014138943 A RU 2014138943A RU 2014138943 A RU2014138943 A RU 2014138943A RU 2014138943 A RU2014138943 A RU 2014138943A
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slot
slots
countdown
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circuit further
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Цинхуа ЛИ
Хунган ЛИ
Хуанинг НЮ
И Хсуань
Юань ЧЖУ
Сяоган ЧЭНЬ
Цзун-Каэ ФУ
Алексей Давыдов
Хуцзюнь ИНЬ
Синьтянь Э. ЛИНЬ
Вэнди К. ВОНГ
Юдзянь ЧЖАН
Апостолос ПАПАТАНАССИУ
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Интел Корпорейшн
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]
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Abstract

1. Пользовательское устройство (UE), содержащее:трансивер для обеспечения беспроводного интерфейса для установления связи с eNB (усовершенствованный узел В) и для осуществления D2D (устройство-устройство) коммуникаций; исхему обработки, подключенную к трансиверу, для:приема информации о выделении частотно-временных ресурсов для D2D коммуникаций с eNB;установления D2D сеанса связи со вторым UE, в котором D2D передачи на и из второго UE организованы в D2D слотах, где каждый D2D слот начинается с преамбулы и содержит множество OFDM или SC-FDM символов; ивыполнение автоматической регулировки усиления (AGC), используя преамбулы принятых D2D слотов.2. Устройство по п. 1, в котором преамбула представляет собой повторяющуюся последовательность сигналов во временной области.3. Устройство по п. 2, в котором схема обработки дополнительно обнаруживает преамбулу принятых D2D слотов посредством автокорреляции.4. Устройство по п. 2, в котором каждый D2D слот включает в себя один или несколько опорных символов.5. Устройство по п. 2, в котором схема обработки дополнительно инициирует сеанс связи со вторым UE с использованием множественного доступа с контролем несущей (CSMA) по отношению к D2D слоту посредством:зондирования текущего D2D слота для определения наличия активности передачи; и,если текущий D2D слот не занят, осуществляет D2D передачу на второе UE в начале последующего D2D слота.6. Устройство по п. 5, в котором схема обработки дополнительно инициирует сеанс связи со вторым UE посредством:если текущий D2D слот не занят, начинает обратный отсчет с выбранного числа;декрементации обратным отсчетом после обнаружения каждого незанятого D2D слота, и приостановлением обратного отсчета при обнаружении занятого D2D слота; иосуществлением D2D п

Claims (30)

1. Пользовательское устройство (UE), содержащее:
трансивер для обеспечения беспроводного интерфейса для установления связи с eNB (усовершенствованный узел В) и для осуществления D2D (устройство-устройство) коммуникаций; и
схему обработки, подключенную к трансиверу, для:
приема информации о выделении частотно-временных ресурсов для D2D коммуникаций с eNB;
установления D2D сеанса связи со вторым UE, в котором D2D передачи на и из второго UE организованы в D2D слотах, где каждый D2D слот начинается с преамбулы и содержит множество OFDM или SC-FDM символов; и
выполнение автоматической регулировки усиления (AGC), используя преамбулы принятых D2D слотов.
2. Устройство по п. 1, в котором преамбула представляет собой повторяющуюся последовательность сигналов во временной области.
3. Устройство по п. 2, в котором схема обработки дополнительно обнаруживает преамбулу принятых D2D слотов посредством автокорреляции.
4. Устройство по п. 2, в котором каждый D2D слот включает в себя один или несколько опорных символов.
5. Устройство по п. 2, в котором схема обработки дополнительно инициирует сеанс связи со вторым UE с использованием множественного доступа с контролем несущей (CSMA) по отношению к D2D слоту посредством:
зондирования текущего D2D слота для определения наличия активности передачи; и,
если текущий D2D слот не занят, осуществляет D2D передачу на второе UE в начале последующего D2D слота.
6. Устройство по п. 5, в котором схема обработки дополнительно инициирует сеанс связи со вторым UE посредством:
если текущий D2D слот не занят, начинает обратный отсчет с выбранного числа;
декрементации обратным отсчетом после обнаружения каждого незанятого D2D слота, и приостановлением обратного отсчета при обнаружении занятого D2D слота; и
осуществлением D2D передачи на второе UE в начале следующего D2D слота после того, как обратный отсчет достигнет нуля.
7. Устройство по п. 6, в котором указанное число для обратного отсчета выбирается случайным или псевдослучайным образом.
8. Устройство по п. 5, в котором D2D слот дополнительно включает в себя информацию о времени резервирования, закодированную в канале управления, которая определяет, сколько D2D слотов должны быть последовательно переданы передающим устройством.
9. Устройство по п. 8, в котором схема обработки дополнительно, когда определяется информация о времени резервирования в D2D слоте, прекращает зондирование D2D слотов до окончания периода времени резервирования.
10. Устройство по п. 9, в котором схема обработки дополнительно, когда определяется информация о времени резервирования в D2D слоте, переходит в режим ожидания до окончания периода времени резервирования.
11. Устройство по п. 5, в котором D2D слоты нумеруются последовательно во временной и/или частотной областях.
12. Устройство по п. 1, в котором схема обработки дополнительно передает информацию об индикации уровня мощности передачи в каждом D2D слоте.
13. Устройство по п. 12, в котором преамбула представляет собой повторяющуюся последовательность сигналов во временной области с периодичностью, показывающая уровень мощности передачи.
14. Устройство по п. 13, в котором схема обработки дополнительно содержит банк корреляторов с различными длительностями корреляции для определения приема преамбулы и уровня мощности передачи.
15. Устройство по п. 12, в котором схема обработки дополнительно передает информацию об индикации уровня мощности передачи в одном или нескольких опорных символах, где указанный опорный символ или указанная последовательность опорных символов обозначает уровень мощности передачи.
16. Устройство по п. 12, в котором схема обработки дополнительно передает и указывает на уровень мощности передачи как кодированные биты в заголовке физического уровня, следующий за преамбулой.
17. Устройство по п. 16, в котором заголовок физического уровня дополнительно содержит индикацию количества D2D слотов, которые составляют транспортный блок и которые должны быть посланы последовательно.
18. Устройство по п. 1, в котором схема обработки дополнительно принимает информацию о распределении частотно-временных ресурсов для D2D коммуникаций из eNB в ответ на запрос о резервировании канала, и в котором индикация уровня мощности передачи для D2D коммуникаций и продолжительность резервирования содержится в запросе на резервирование канала.
19. Устройство по п. 18, в котором запрос на резервирование канала передается на достаточно высокой мощности, чтобы другие UEs, находящиеся в непосредственной близости от устройства, могли принять информацию о резервировании канала и уровне мощности передачи.
20. Пользовательское устройство (UE), содержащее:
трансивер для обеспечения беспроводного интерфейса для обеспечения D2D (устройство-устройство) коммуникаций; и
схему обработки, подключенную к трансиверу, для:
инициирования D2D сеанса связи со вторым UE, в котором D2D передачи на и из второго UE организованы в D2D слотах, где каждый D2D слот содержит множество OFDM или SC-FDM символов, используя множественный доступ с контролем несущей (CSMA) по отношению к D2D слоту, схема обработки дополнительно выполнена с возможностью:
зондировать текущий D2D слот для определения наличия активности передачи; и,
если текущий D2D слот не занят, осуществляет D2D передачу на второе UE в начале последующего D2D слота.
21. Устройство по п. 20, в котором схема обработки дополнительно инициирует сеанс связи со вторым UE посредством:
если текущий D2D слот не занят, начинает обратный отсчет с выбранного номера;
декрементации обратным отсчетом после обнаружения каждого незанятого D2D слота, и приостановлением обратного отсчета при обнаружении занятого D2D слота; и
осуществления D2D передачи на второе UE в начале следующего D2D слота после того, как обратный отсчет достигнет нуля.
22. Устройство по п. 21, в котором указанное число для обратного отсчета выбрано случайным или псевдослучайным образом.
23. Устройство по п. 20, в котором D2D слот дополнительно включает в себя информацию о времени резервирования, закодированную в канале управления, которая определяет, сколько D2D слотов должно быть последовательно передано передающим устройством.
24. Устройство по п. 23, в котором схема обработки дополнительно, когда определяется информация о времени резервирования в D2D слоте, прекращает зондирование D2D слотов до окончания периода времени резервирования.
25. Устройство по п. 24, в котором схема обработки дополнительно, когда определяется информация о времени резервирования в D2D слоте, переходит в режим ожидания до окончания периода времени резервирования.
26. Способ работы пользовательского устройства (UE), содержащий:
прием информации о выделении частотно-временных ресурсов для D2D коммуникаций из усовершенствованного узла В (eNB);
в котором D2D передачи на и из второго UE организованы в D2D слотах, где каждый D2D слот содержит множество OFDM или SC-FDM символов;
зондирование текущего D2D слота для определения наличия активности передачи; и,
если текущий D2D слот не занят, осуществление D2D передачи на второе UE в начале последующего D2D слота.
27. Способ по п. 26, дополнительно содержащий:
если текущий D2D слот не занят, начинает обратный отсчет с выбранного номера;
декрементацию обратным отсчетом после обнаружения каждого незанятого D2D слота, и приостанавливает обратный отсчет при обнаружении занятого D2D слота; и осуществление D2D передачи на второе UE в начале следующего D2D слота после того, как обратный отсчет достигнет нуля.
28. Способ по п. 26 дополнительно содержит вставку преамбулы для использования вторым UE в D2D передаче.
29. Способ по п. 26 дополнительно содержит вставку информации о времени резервирования, закодированную в канале управления, которая определяет, сколько D2D слотов должны быть переданы последовательно.
30. Способ по п. 26 дополнительно содержит, когда обнаружена информация о времени резервирования в D2D слоте, прекращение зондирования D2D слотов до окончания периода времени резервирования.
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